/* roulang page: index */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #33EAFF;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none !important;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.45);
            transform: translateY(-1px);
            filter: brightness(1.1);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: transparent;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== STEP PROGRESS BAR ========== */
        .step-bar-wrapper {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
        }
        .step-bar {
            display: flex;
            align-items: center;
            gap: 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            white-space: nowrap;
        }
        .step-bar::-webkit-scrollbar {
            display: none;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
            min-height: 36px;
            user-select: none;
        }
        .step-item:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.06);
            text-decoration: none;
        }
        .step-item.active-step {
            background: var(--accent-cyan);
            color: #020617;
            font-weight: 700;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
        }
        .step-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: currentColor;
            flex-shrink: 0;
        }
        .step-connector {
            width: 28px;
            height: 1.5px;
            background: rgba(148, 163, 184, 0.35);
            flex-shrink: 0;
            margin: 0 2px;
            border-radius: 1px;
        }

        /* ========== HERO ========== */
        .hero-section {
            padding-top: 160px;
            padding-bottom: 80px;
            position: relative;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            min-height: 620px;
            display: flex;
            align-items: center;
            text-align: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 30%, rgba(0, 229, 255, 0.08) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 60%, rgba(245, 158, 11, 0.05) 0%, transparent 60%),
                linear-gradient(180deg, rgba(2, 6, 23, 0.7) 0%, rgba(2, 6, 23, 0.5) 100%);
            pointer-events: none;
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid var(--border-subtle);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero-section h1 {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero-section h1 .highlight {
            color: var(--accent-cyan);
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-search-wrap {
            display: flex;
            align-items: center;
            max-width: 560px;
            margin: 0 auto 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 30px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .hero-search-wrap:focus-within {
            border-color: var(--border-glow);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.2);
        }
        .hero-search-wrap input {
            flex: 1;
            padding: 14px 20px;
            background: transparent;
            color: #fff;
            font-size: 1rem;
            border: none;
            min-width: 0;
        }
        .hero-search-wrap input::placeholder {
            color: var(--text-muted);
        }
        .hero-search-wrap button {
            padding: 14px 24px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            border-radius: 0 30px 30px 0;
            transition: all var(--transition-fast);
            white-space: nowrap;
            min-height: 44px;
            min-width: 44px;
        }
        .hero-search-wrap button:hover {
            filter: brightness(1.15);
            box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.15);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .hero-tag {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-body);
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }
        .hero-tag:hover {
            border-color: var(--border-glow);
            background: rgba(0, 229, 255, 0.08);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.3rem);
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
            max-width: 680px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== METRICS BOARD ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(0, 229, 255, 0.04) 0%, transparent 60%);
            pointer-events: none;
            transition: opacity var(--transition-smooth);
            opacity: 0;
        }
        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .metric-card:hover::before {
            opacity: 1;
        }
        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.1;
            letter-spacing: 0.02em;
        }
        .metric-card:nth-child(2) .metric-number {
            color: var(--accent-amber);
        }
        .metric-card:nth-child(3) .metric-number {
            color: #60A5FA;
        }
        .metric-card:nth-child(4) .metric-number {
            color: #34D399;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }
        .metric-suffix {
            font-size: 1.2rem;
            font-weight: 600;
            color: inherit;
            opacity: 0.8;
        }

        /* ========== SELLING POINTS ========== */
        .selling-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .selling-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: all var(--transition-smooth);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .selling-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-6px);
        }
        .selling-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            border: 1px solid var(--border-subtle);
        }
        .selling-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .selling-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
        }
        .service-main-col {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .service-side-col {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .service-card-large {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            display: flex;
            gap: 20px;
            align-items: flex-start;
            position: relative;
        }
        .service-card-large:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .service-card-large .svc-img {
            width: 140px;
            height: 100px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: #1E293B;
        }
        .service-card-large .svc-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .service-card-large .svc-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .svc-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .svc-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .service-card-small {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .service-card-small:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.12);
            transform: translateX(3px);
        }
        .service-card-small .svc-sm-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.08);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            border: 1px solid var(--border-subtle);
        }
        .service-card-small .svc-sm-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 2px;
        }
        .service-card-small .svc-sm-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== SCENE DEMO ========== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .scene-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .scene-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .scene-card .scene-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: #1E293B;
        }
        .scene-card .scene-body {
            padding: 22px 20px;
        }
        .scene-card .scene-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== HOT TOPICS ========== */
        .topics-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .topic-tag {
            display: inline-block;
            padding: 10px 22px;
            border-radius: 24px;
            background: var(--bg-card-alt);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }
        .topic-tag:hover {
            border-color: var(--border-glow);
            background: rgba(0, 229, 255, 0.08);
            color: #fff;
            text-decoration: none;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.18);
            transform: translateY(-2px);
        }
        .topic-tag.featured {
            background: rgba(0, 229, 255, 0.12);
            border-color: var(--border-glow);
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .comparison-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
        }
        .comparison-panel.before-panel {
            border-color: rgba(255, 100, 100, 0.25);
        }
        .comparison-panel.after-panel {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
        }
        .comparison-panel h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .before-panel h3 {
            color: #F87171;
        }
        .after-panel h3 {
            color: var(--accent-cyan);
        }
        .comparison-list {
            list-style: none;
            text-align: left;
        }
        .comparison-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.95rem;
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comparison-list li .cmp-icon {
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .before-panel .cmp-icon {
            color: #F87171;
        }
        .after-panel .cmp-icon {
            color: #34D399;
        }
        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-amber);
            min-width: 60px;
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }
        .brand-intro-block .brand-img {
            width: 200px;
            height: 160px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: #1E293B;
            border: 1px solid var(--border-subtle);
        }
        .brand-intro-block .brand-text h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .brand-intro-block .brand-text p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.85;
        }

        /* ========== CONTENT PREVIEW ========== */
        .timeline-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 700px;
            margin: 0 auto;
        }
        .timeline-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 18px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }
        .timeline-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.08);
        }
        .timeline-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
            margin-top: 6px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
        }
        .timeline-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 3px;
        }
        .timeline-info span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ========== SOCIAL PROOF ========== */
        .proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .proof-item {
            padding: 24px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }
        .proof-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.08);
        }
        .proof-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-amber);
        }
        .proof-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .proof-stars {
            color: #F59E0B;
            font-size: 1.1rem;
            letter-spacing: 2px;
        }

        /* ========== NEWS ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 18px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }
        .news-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.08);
        }
        .news-date {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 500;
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 80px;
        }
        .news-body h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .news-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-read-more {
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 500;
            cursor: pointer;
            background: none;
            padding: 4px 0;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
        }
        .news-read-more:hover {
            color: #33EAFF;
            text-decoration: underline;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item.open {
            border-color: var(--border-glow);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.1);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: all var(--transition-fast);
            background: transparent;
            min-height: 44px;
            border: none;
        }
        .faq-question:hover {
            background: rgba(0, 229, 255, 0.04);
        }
        .faq-icon {
            font-size: 1.3rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px 52px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ========== CTA FORM ========== */
        .cta-section {
            background: linear-gradient(160deg, #0A1628 0%, #0A0E27 40%, #0D1F3C 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.07) 0%, transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }
        .cta-inner {
            max-width: 600px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-inner .cta-sub {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            text-align: left;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--border-glow);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.2);
            outline: none;
        }
        .cta-form textarea {
            min-height: 100px;
        }
        .cta-submit-btn {
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #F59E0B, #D97706);
            color: #020617;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 0 24px rgba(245, 158, 11, 0.3);
            text-align: center;
            min-height: 44px;
            border: none;
            letter-spacing: 0.03em;
        }
        .cta-submit-btn:hover {
            box-shadow: 0 0 36px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
            filter: brightness(1.08);
        }
        .cta-submit-btn:active {
            transform: scale(0.97);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #020617;
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 2;
            display: block;
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 2;
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .service-side-col {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .service-side-col .service-card-small {
                flex: 1 1 140px;
                min-width: 140px;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .comparison-vs {
                padding: 10px 0;
            }
            .proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .selling-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro-block {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .brand-intro-block .brand-img {
                width: 100%;
                max-width: 300px;
                height: 180px;
            }
            :root {
                --section-gap: 70px;
                --padding-container: 20px;
            }
            .hero-section {
                padding-top: 150px;
                min-height: 500px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 229, 255, 0.1);
                z-index: 1000;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-cta-btn.mobile-visible {
                display: block;
                text-align: center;
                margin-top: 8px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 2rem;
            }
            .selling-grid {
                grid-template-columns: 1fr;
            }
            .service-side-col {
                flex-direction: column;
            }
            .service-card-large {
                flex-direction: column;
            }
            .service-card-large .svc-img {
                width: 100%;
                height: 140px;
            }
            .proof-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            :root {
                --section-gap: 50px;
                --padding-container: 16px;
            }
            .step-bar {
                gap: 0;
            }
            .step-item {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .step-connector {
                width: 16px;
            }
            .hero-section {
                padding-top: 140px;
                padding-bottom: 50px;
                min-height: auto;
            }
            .comparison-panel {
                padding: 20px 16px;
            }
            .brand-intro-block .brand-text p {
                font-size: 0.9rem;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
            }
            .cta-inner h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 18px 12px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .proof-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .hero-tags {
                gap: 6px;
            }
            .hero-tag {
                padding: 5px 10px;
                font-size: 0.75rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px 40px;
            }
            .step-item {
                padding: 5px 10px;
                font-size: 0.72rem;
            }
            .step-connector {
                width: 10px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 64px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #33EAFF;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.93rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 0.93rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none !important;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.45);
            transform: translateY(-1px);
            background: linear-gradient(135deg, #33EAFF, #0099DD);
            text-decoration: none;
        }
        .nav-cta-btn.mobile-visible {
            display: none;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .step-bar::-webkit-scrollbar {
            display: none;
        }
        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: fit-content;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            flex-shrink: 0;
        }
        .step-item:hover {
            color: #fff;
            text-decoration: none;
            background: rgba(0, 229, 255, 0.06);
        }
        .step-item.active-step {
            color: #fff;
            background: var(--accent-cyan);
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
        }
        .step-connector {
            width: 20px;
            height: 1px;
            background: rgba(148, 163, 184, 0.4);
            flex-shrink: 0;
            margin: 0 2px;
        }
        .step-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: rgba(148, 163, 184, 0.5);
            flex-shrink: 0;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            padding: 80px 0 90px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(2, 6, 23, 0.82) 0%, rgba(10, 14, 39, 0.7) 50%, rgba(2, 6, 23, 0.9) 100%);
            z-index: 1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 30% 25%, rgba(0, 229, 255, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(245, 158, 11, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 229, 255, 0.06) 0%, transparent 50%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 var(--padding-container);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 24px;
            padding: 8px 18px;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            font-weight: 500;
            margin-bottom: 24px;
            animation: pulse-badge 2.5s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 229, 255, 0.45);
            }
        }
        .hero-badge .live-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: #FF3B3B;
            animation: live-pulse 1.2s ease-in-out infinite;
        }
        @keyframes live-pulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 6px #FF3B3B;
            }
            50% {
                opacity: 0.4;
                box-shadow: 0 0 18px #FF3B3B;
            }
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
            text-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--accent-cyan), #00B8D4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 600px;
        }
        .hero-countdown-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .countdown-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .countdown-block {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .countdown-item {
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: var(--radius-md);
            padding: 10px 16px;
            text-align: center;
            min-width: 56px;
        }
        .countdown-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
        }
        .countdown-unit {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .countdown-sep {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            font-weight: 700;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.3);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(0, 229, 255, 0.5);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #33EAFF, #0099DD);
            text-decoration: none;
            color: #fff;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: #33EAFF;
            color: #33EAFF;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.25);
            text-decoration: none;
        }
        .btn-amber {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-amber-glow);
            text-decoration: none;
            cursor: pointer;
        }
        .btn-amber:hover {
            box-shadow: 0 0 42px rgba(245, 158, 11, 0.45);
            transform: translateY(-2px);
            text-decoration: none;
            color: #1a1a1a;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.08);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
            font-weight: 600;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .metric-card:hover::before {
            opacity: 1;
        }
        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
            margin-bottom: 8px;
        }
        .metric-number.amber {
            color: var(--accent-amber);
        }
        .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .metric-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
            opacity: 0.7;
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }
        .service-large-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .service-large-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }
        .service-large-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .service-card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.6rem;
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .service-card-icon.amber {
            background: rgba(245, 158, 11, 0.1);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .service-card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .service-card-body p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .service-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .service-tag {
            display: inline-block;
            font-size: 0.78rem;
            padding: 4px 10px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            font-weight: 500;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .service-tag.amber-tag {
            background: rgba(245, 158, 11, 0.08);
            color: var(--accent-amber);
            border-color: rgba(245, 158, 11, 0.25);
        }
        .service-side-cards {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .service-side-card {
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            cursor: pointer;
        }
        .service-side-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateX(3px);
        }
        .service-side-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .service-side-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .comparison-col {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .comparison-col.before {
            border-left: 4px solid #64748B;
        }
        .comparison-col.after {
            border-left: 4px solid var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }
        .comparison-col h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .comparison-col h3 .icon-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            margin-right: 6px;
        }
        .comparison-col h3 .icon-dot.gray {
            background: #64748B;
        }
        .comparison-col h3 .icon-dot.cyan {
            background: var(--accent-cyan);
            box-shadow: 0 0 10px var(--accent-cyan);
        }
        .comparison-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.02);
        }
        .comparison-list li .check-icon {
            flex-shrink: 0;
            font-size: 1.1rem;
            margin-top: 1px;
        }
        .comparison-list li .check-icon.bad {
            color: #EF4444;
        }
        .comparison-list li .check-icon.good {
            color: #10B981;
        }
        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-amber);
            padding: 0 10px;
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: none;
            border: none;
            transition: background var(--transition-fast);
            font-family: inherit;
        }
        .faq-question:hover {
            background: rgba(0, 229, 255, 0.04);
        }
        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-icon {
            background: var(--accent-cyan);
            color: #020617;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.45s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 20px 0 66px;
            font-size: 0.93rem;
            color: var(--text-body);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px 66px;
        }

        /* ========== CTA FORM ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(0, 229, 255, 0.05) 0%, rgba(2, 6, 23, 0.95) 100%);
            border-top: 1px solid rgba(0, 229, 255, 0.15);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: 960px;
            margin: 0 auto;
            padding: 0 var(--padding-container);
        }
        .cta-info h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .cta-info p {
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            font-size: 1rem;
        }
        .cta-info .cta-benefits {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cta-info .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-body);
        }
        .cta-benefits li .benefit-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-cyan);
            flex-shrink: 0;
            box-shadow: 0 0 8px var(--accent-cyan);
        }
        .cta-form-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-glow);
        }
        .cta-form-wrap h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            text-align: center;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.2);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
        }
        .form-submit-btn {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-amber-glow);
            text-align: center;
        }
        .form-submit-btn:hover {
            box-shadow: 0 0 42px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-vs {
                padding: 8px 0;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-cta-btn.mobile-visible {
                display: inline-block;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 50px;
                --padding-container: 16px;
            }
            body {
                padding-top: 64px;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bg-nav);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px var(--padding-container);
                gap: 8px;
                transform: translateX(100%);
                transition: transform var(--transition-smooth);
                z-index: 999;
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-cta-btn.mobile-visible {
                display: block;
                width: 100%;
                text-align: center;
                margin-top: 8px;
            }
            .hero-section {
                padding: 50px 0 60px;
                min-height: 400px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .countdown-num {
                font-size: 1.4rem;
            }
            .countdown-item {
                padding: 8px 12px;
                min-width: 44px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-number {
                font-size: 2rem;
            }
            .service-large-card {
                flex-direction: column;
                padding: 24px;
                gap: 14px;
            }
            .comparison-col {
                padding: 20px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-form-wrap {
                padding: 24px;
            }
            .step-bar {
                height: 42px;
                top: 64px;
            }
            .step-item {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .step-connector {
                width: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 18px 14px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary,
            .btn-secondary,
            .btn-amber {
                width: 100%;
                justify-content: center;
            }
            .countdown-wrap {
                gap: 6px;
            }
            .countdown-item {
                padding: 6px 10px;
                min-width: 38px;
            }
            .countdown-num {
                font-size: 1.2rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 64px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #33EAFF;
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.93rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 0.93rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.45);
            transform: translateY(-1px);
            color: #fff !important;
            text-decoration: none;
            background: linear-gradient(135deg, #33EAFF, #0099DD);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            z-index: 1001;
            background: transparent;
            border: none;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .step-bar::-webkit-scrollbar {
            display: none;
        }
        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            max-width: var(--max-width);
            width: 100%;
            min-width: max-content;
            justify-content: center;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            flex-shrink: 0;
        }
        .step-item:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.06);
            text-decoration: none;
        }
        .step-item.active {
            color: #fff;
            background: var(--accent-cyan);
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
        }
        .step-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--text-muted);
            flex-shrink: 0;
        }
        .step-item.active .step-dot {
            background: #fff;
        }
        .step-arrow {
            color: var(--text-muted);
            font-size: 0.7rem;
            flex-shrink: 0;
            margin: 0 4px;
            opacity: 0.5;
        }

        /* ========== HERO - 直播预告风格 ========== */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(180deg, #0A0E27 0%, #020617 100%);
            overflow: hidden;
            padding: 80px 0 60px;
            margin-top: 48px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            filter: brightness(0.6) saturate(1.2);
        }
        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background:
                repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(0, 229, 255, 0.03) 40px, rgba(0, 229, 255, 0.03) 41px),
                repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(0, 229, 255, 0.03) 40px, rgba(0, 229, 255, 0.03) 41px);
            pointer-events: none;
        }
        .hero-glow-orb {
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.15) 0%, transparent 70%);
            top: -100px;
            right: -80px;
            z-index: 1;
            pointer-events: none;
            animation: orbPulse 4s ease-in-out infinite;
        }
        @keyframes orbPulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.2);
                opacity: 0.9;
            }
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            padding: 0 var(--padding-container);
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid var(--border-amber);
            color: var(--accent-amber);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            animation: badgeGlow 2s ease-in-out infinite;
        }
        @keyframes badgeGlow {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(245, 158, 11, 0.3);
            }
            50% {
                box-shadow: 0 0 22px rgba(245, 158, 11, 0.6);
            }
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #33EAFF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-countdown-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .countdown-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            letter-spacing: 0.05em;
        }
        .countdown-block {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .countdown-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 10px 16px;
            text-align: center;
            min-width: 64px;
            box-shadow: var(--shadow-card);
        }
        .countdown-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
        }
        .countdown-unit {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }
        .countdown-sep {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            font-weight: 700;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.3);
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(0, 229, 255, 0.5);
            transform: translateY(-2px);
            text-decoration: none;
            background: linear-gradient(135deg, #33EAFF, #0099DD);
        }
        .btn-secondary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: #33EAFF;
            color: #33EAFF;
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }
        .btn-amber {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #1a1a1a !important;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(245, 158, 11, 0.3);
            cursor: pointer;
            border: none;
        }
        .btn-amber:hover {
            box-shadow: 0 0 35px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
            text-decoration: none;
            background: linear-gradient(135deg, #FBBF24, #E5A100);
        }

        /* ========== SECTION TITLES ========== */
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .section {
            padding: var(--section-gap) 0;
        }

        /* ========== METRICS PANEL ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .metric-card:hover::before {
            opacity: 1;
        }
        .metric-value {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
            margin-bottom: 8px;
            font-variant-numeric: tabular-nums;
        }
        .metric-value.amber {
            color: var(--accent-amber);
        }
        .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== SERVICE MATRIX - 错落布局 ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }
        .service-large-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .service-small-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .service-card {
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .service-card.large {
            padding: 32px;
        }
        .service-card-img {
            width: 100%;
            height: 180px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 18px;
            background: var(--bg-card);
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-size: 1.4rem;
            color: var(--accent-cyan);
        }
        .service-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .service-tag {
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.2);
            font-weight: 500;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: center;
        }
        .comparison-card {
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .comparison-card.before {
            border-left: 4px solid #64748B;
        }
        .comparison-card.after {
            border-left: 4px solid var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }
        .comparison-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-align: center;
        }
        .comparison-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .comparison-list li {
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.93rem;
            background: var(--bg-card);
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comparison-list li .check-icon {
            color: var(--accent-cyan);
            font-weight: 700;
            flex-shrink: 0;
        }
        .comparison-list li .cross-icon {
            color: #EF4444;
            font-weight: 700;
            flex-shrink: 0;
        }
        .comparison-vs {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-amber);
            text-align: center;
            letter-spacing: 0.05em;
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            text-align: center;
        }
        .scenario-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .scenario-card-img {
            width: 100%;
            height: 140px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 16px;
            background: var(--bg-card-alt);
        }
        .scenario-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scenario-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            width: 100%;
            text-align: left;
            border: none;
            background: transparent;
        }
        .faq-question:hover {
            background: rgba(0, 229, 255, 0.04);
        }
        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent-cyan);
            font-size: 1rem;
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-icon {
            background: var(--accent-cyan);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(0, 229, 255, 0.06) 0%, rgba(2, 6, 23, 1) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 70px 0;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .cta-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-text p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .cta-form {
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .cta-form .form-group {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 6px;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
            outline: none;
        }
        .cta-form textarea {
            min-height: 100px;
        }
        .cta-form .btn-amber {
            width: 100%;
            text-align: center;
            padding: 14px;
            font-size: 1.05rem;
            margin-top: 8px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: block;
            margin-bottom: 6px;
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.4rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .comparison-vs {
                font-size: 1.5rem;
                padding: 10px 0;
            }
            .cta-inner {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            :root {
                --section-gap: 70px;
                --padding-container: 20px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }
            .site-nav {
                height: 60px;
            }
            .step-bar {
                top: 60px;
                height: 42px;
            }
            .hero-section {
                margin-top: 42px;
                min-height: 500px;
                padding: 60px 0 40px;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px var(--padding-container);
                gap: 4px;
                border-bottom: 1px solid rgba(0, 229, 255, 0.1);
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                z-index: 999;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                text-align: left;
            }
            .nav-cta-btn.desktop-only {
                display: none;
            }
            .nav-links .mobile-visible {
                display: block !important;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .countdown-value {
                font-size: 1.5rem;
            }
            .countdown-item {
                min-width: 50px;
                padding: 8px 12px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-value {
                font-size: 2rem;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section {
                padding: 50px 0;
            }
            :root {
                --section-gap: 50px;
                --padding-container: 16px;
            }
            .step-item {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .step-arrow {
                margin: 0 1px;
            }
            .btn-primary,
            .btn-secondary,
            .btn-amber {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-secondary {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-countdown-wrap {
                gap: 8px;
            }
            .countdown-item {
                min-width: 44px;
                padding: 6px 10px;
            }
            .countdown-value {
                font-size: 1.2rem;
            }
            .countdown-sep {
                font-size: 1.1rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 18px 14px;
            }
            .metric-value {
                font-size: 1.6rem;
            }
            .service-card {
                padding: 18px;
            }
            .service-card.large {
                padding: 20px;
            }
            .cta-form {
                padding: 20px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .comparison-card {
                padding: 18px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 112px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #33EAFF;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 7px 13px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.93rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.93rem;
            text-decoration: none;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, #33EAFF, #0099DD);
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.4);
            text-decoration: none;
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-cta-btn.mobile-visible {
            display: none;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
        }
        .nav-hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .step-bar::-webkit-scrollbar {
            display: none;
        }
        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            white-space: nowrap;
            min-width: max-content;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }
        .step-item:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.06);
            text-decoration: none;
        }
        .step-item.active {
            color: #fff;
            background: var(--accent-cyan);
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
        }
        .step-connector {
            width: 28px;
            height: 1px;
            background: rgba(255, 255, 255, 0.2);
            flex-shrink: 0;
            margin: 0 2px;
        }
        .step-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            flex-shrink: 0;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            width: 100%;
            min-height: 580px;
            background: linear-gradient(180deg, rgba(2, 6, 23, 0.7) 0%, rgba(10, 14, 39, 0.85) 40%, rgba(2, 6, 23, 0.95) 100%),
                url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 30% 20%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(245, 158, 11, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 229, 255, 0.04) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            pointer-events: none;
            opacity: 0.5;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 60px var(--padding-container);
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.12);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            animation: pulse-badge 2.5s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
            }
            50% {
                box-shadow: 0 0 24px rgba(0, 229, 255, 0.45);
            }
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #66F0FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-countdown-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin: 24px 0 28px;
            flex-wrap: wrap;
        }
        .countdown-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .countdown-timer {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .countdown-unit {
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            text-align: center;
            min-width: 48px;
        }
        .countdown-unit .num {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
        }
        .countdown-unit .lbl {
            font-size: 0.7rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }
        .countdown-sep {
            font-size: 1.3rem;
            color: var(--accent-cyan);
            font-weight: 700;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            padding: 13px 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.3);
            letter-spacing: 0.03em;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #33EAFF, #0099DD);
            box-shadow: 0 0 36px rgba(0, 229, 255, 0.5);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            display: inline-block;
            padding: 13px 32px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 2px solid var(--border-glow);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            letter-spacing: 0.03em;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.3);
            text-decoration: none;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .metric-card:hover::after {
            opacity: 1;
        }
        .metric-value {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .metric-value.cyan {
            color: var(--accent-cyan);
        }
        .metric-value.amber {
            color: var(--accent-amber);
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.03em;
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }
        .service-big-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .service-card-big {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .service-card-big:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .service-card-big .service-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.6rem;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .service-card-big .service-info h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .service-card-big .service-info p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .service-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .service-tag {
            padding: 4px 12px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 500;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }
        .service-side-cards {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .service-card-sm {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .service-card-sm:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateX(3px);
        }
        .service-card-sm h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .service-card-sm p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== ADVANTAGES ========== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .advantage-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .advantage-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.3rem;
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .advantage-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .advantage-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== SCENARIOS ========== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .scenario-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-subtle);
        }
        .scenario-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scenario-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .scenario-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
        }
        .scenario-body .scenario-link {
            margin-top: 12px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .scenario-body .scenario-link:hover {
            gap: 8px;
            color: #33EAFF;
        }

        /* ========== PROCESS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .process-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .process-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
        }
        .process-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .process-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .comparison-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
        }
        .comparison-panel.before {
            border-left: 3px solid rgba(255, 100, 100, 0.4);
        }
        .comparison-panel.after {
            border-left: 3px solid var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }
        .comparison-panel h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }
        .comparison-panel ul {
            list-style: none;
            padding: 0;
        }
        .comparison-panel ul li {
            padding: 8px 0;
            color: var(--text-muted);
            font-size: 0.93rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comparison-panel ul li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .comparison-panel.before ul li::before {
            background: rgba(255, 100, 100, 0.6);
        }
        .comparison-panel.after ul li::before {
            background: var(--accent-cyan);
            box-shadow: 0 0 6px rgba(0, 229, 255, 0.5);
        }
        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-amber);
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
            padding: 0 8px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            transition: color var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            transition: all var(--transition-smooth);
        }
        .faq-item.open .faq-icon {
            background: var(--accent-cyan);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .faq-answer p {
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(0, 229, 255, 0.06) 0%, rgba(2, 6, 23, 0.95) 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .cta-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-text p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.7;
        }
        .cta-form {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-glow);
        }
        .cta-form .form-group {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 5px;
            font-weight: 500;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
            outline: none;
        }
        .cta-form textarea {
            min-height: 100px;
        }
        .btn-submit {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #E68800);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(245, 158, 11, 0.3);
            letter-spacing: 0.03em;
        }
        .btn-submit:hover {
            background: linear-gradient(135deg, #FAB820, #F59E0B);
            box-shadow: 0 0 36px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #060B1A;
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 50px 0 0;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col p {
            line-height: 1.65;
            margin-bottom: 6px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 3px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.82rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .service-side-cards {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .service-side-cards .service-card-sm {
                flex: 1 1 140px;
                min-width: 140px;
            }
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .comparison-vs {
                padding: 10px 0;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                max-width: 600px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            :root {
                --section-gap: 70px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 112px;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(2, 6, 23, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                gap: 2px;
                border-bottom: 1px solid rgba(0, 229, 255, 0.15);
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                z-index: 998;
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                text-align: left;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-cta-btn.mobile-visible {
                display: block;
                width: 100%;
                text-align: center;
                margin-top: 8px;
            }
            .step-bar {
                overflow-x: auto;
            }
            .step-item {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .step-connector {
                width: 16px;
            }
            .hero-section {
                min-height: 440px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .countdown-unit {
                padding: 6px 10px;
                min-width: 38px;
            }
            .countdown-unit .num {
                font-size: 1.2rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-value {
                font-size: 2rem;
            }
            .service-card-big {
                flex-direction: column;
                padding: 20px;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            :root {
                --section-gap: 50px;
                --padding-container: 16px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-form {
                padding: 20px;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                text-align: center;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 18px 12px;
            }
            .metric-value {
                font-size: 1.6rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .countdown-unit {
                padding: 5px 8px;
                min-width: 32px;
            }
            .countdown-unit .num {
                font-size: 1rem;
            }
            .countdown-sep {
                font-size: 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 112px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: #33EAFF;
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }

        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            text-decoration: none !important;
            transition: all var(--transition-fast);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.45);
            transform: translateY(-1px);
            color: #fff !important;
            text-decoration: none !important;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }

        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-visible {
            display: none;
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .step-bar::-webkit-scrollbar {
            display: none;
        }

        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            max-width: var(--max-width);
            width: 100%;
            min-width: max-content;
            justify-content: center;
        }

        .step-item {
            display: flex;
            align-items: center;
            gap: 0;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .step-dot {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-card-alt);
            border: 2px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .step-item.active .step-dot {
            background: var(--accent-cyan);
            border-color: var(--accent-cyan);
            color: #020617;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.5);
        }

        .step-item.visited .step-dot {
            background: var(--accent-cyan-dark);
            border-color: var(--accent-cyan-dark);
            color: #fff;
        }

        .step-label {
            margin-left: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: color var(--transition-fast);
        }

        .step-item.active .step-label {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .step-item.visited .step-label {
            color: #b0c4de;
        }

        .step-connector {
            width: 36px;
            height: 1.5px;
            background: rgba(255, 255, 255, 0.15);
            margin: 0 12px;
            flex-shrink: 0;
            position: relative;
        }

        .step-connector::after {
            content: '';
            position: absolute;
            right: -4px;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 0;
            border-left: 5px solid rgba(255, 255, 255, 0.35);
            border-top: 4px solid transparent;
            border-bottom: 4px solid transparent;
        }

        .step-item a {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: inherit;
            gap: 0;
        }

        .step-item a:hover .step-label {
            color: #fff;
            text-decoration: none;
        }

        /* ========== HERO SECTION ========== */
        .hero-section {
            position: relative;
            padding: 70px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 229, 255, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(245, 158, 11, 0.04) 0%, transparent 55%),
                url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            opacity: 0.55;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 229, 255, 0.02) 2px, rgba(0, 229, 255, 0.02) 4px),
                repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 229, 255, 0.015) 2px, rgba(0, 229, 255, 0.015) 4px);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 var(--padding-container);
        }

        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-bottom: 28px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 50px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid var(--border-subtle);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-cyan);
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .hero-badge:hover {
            border-color: var(--border-glow);
            background: rgba(0, 229, 255, 0.14);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }

        .hero-badge .badge-icon {
            font-size: 1.1rem;
        }

        .hero-badge.amber {
            color: var(--accent-amber);
            border-color: var(--border-amber);
            background: rgba(245, 158, 11, 0.08);
        }

        .hero-badge.amber:hover {
            border-color: rgba(245, 158, 11, 0.6);
            background: rgba(245, 158, 11, 0.14);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
        }

        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #00B8D4);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto 20px;
            line-height: 1.75;
        }

        .hero-qualification {
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 28px;
            margin-bottom: 28px;
            max-width: 550px;
            text-align: left;
        }

        .hero-qualification h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-qualification h4::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--accent-cyan);
            color: #020617;
            font-weight: 700;
            font-size: 0.75rem;
            flex-shrink: 0;
        }

        .hero-qualification ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
        }

        .hero-qualification ul li {
            font-size: 0.88rem;
            color: var(--text-body);
            padding-left: 16px;
            position: relative;
        }

        .hero-qualification ul li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .hero-cta-wrap {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn-primary {
            display: inline-block;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #E67E00);
            color: #020617;
            font-weight: 700;
            font-size: 1.05rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-amber-glow);
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(245, 158, 11, 0.4), 0 6px 28px rgba(0, 0, 0, 0.5);
            transform: translateY(-2px);
            color: #020617;
            text-decoration: none;
        }

        .btn-secondary {
            display: inline-block;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1.05rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: #33EAFF;
            color: #33EAFF;
            text-decoration: none;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.2);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 50px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .feature-card .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 14px;
        }

        .feature-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 50px;
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 500;
            border: 1px solid rgba(0, 229, 255, 0.12);
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .scenario-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .scenario-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .scenario-img::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: linear-gradient(to top, var(--bg-card-alt), transparent);
        }

        .scenario-body {
            padding: 24px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .scenario-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .scenario-body p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }

        .scenario-body .scenario-stats {
            display: flex;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* ========== PROCESS STEPS ========== */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 760px;
            margin: 0 auto;
        }

        .process-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }

        .process-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .process-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #020617;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
        }

        .process-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .process-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== METRICS ROW ========== */
        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }

        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .metric-value {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            letter-spacing: 0.02em;
            margin-bottom: 6px;
            line-height: 1;
        }

        .metric-value.amber {
            color: var(--accent-amber);
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
            max-width: 900px;
            margin: 0 auto;
        }

        .comparison-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }

        .comparison-panel.before {
            border-color: rgba(255, 100, 100, 0.25);
        }

        .comparison-panel.after {
            border-color: rgba(0, 229, 255, 0.35);
            box-shadow: var(--shadow-glow);
        }

        .comparison-panel h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            text-align: center;
        }

        .comparison-panel.before h4 {
            color: #ff6b6b;
        }

        .comparison-panel.after h4 {
            color: var(--accent-cyan);
        }

        .comparison-panel ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .comparison-panel ul li {
            font-size: 0.9rem;
            color: var(--text-body);
            padding-left: 20px;
            position: relative;
            line-height: 1.6;
        }

        .comparison-panel.before ul li::before {
            content: '✗';
            position: absolute;
            left: 0;
            color: #ff6b6b;
            font-weight: 700;
        }

        .comparison-panel.after ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-amber);
            padding: 0 8px;
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }

        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            line-height: 1.5;
        }

        .faq-question:hover {
            background: rgba(0, 229, 255, 0.03);
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            background: var(--accent-cyan);
            color: #020617;
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.4);
        }

        .faq-arrow {
            margin-left: auto;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            position: relative;
            padding: 70px 0;
            background: var(--bg-dark);
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(0, 229, 255, 0.07) 0%, transparent 55%),
                radial-gradient(ellipse at 30% 70%, rgba(245, 158, 11, 0.04) 0%, transparent 50%);
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
            background: rgba(30, 41, 59, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .cta-info h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-info p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .cta-info .cta-highlights {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cta-info .cta-highlights li {
            font-size: 0.9rem;
            color: var(--text-body);
            padding-left: 22px;
            position: relative;
        }

        .cta-info .cta-highlights li::before {
            content: '✦';
            position: absolute;
            left: 0;
            color: var(--accent-cyan);
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--border-glow);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
            outline: none;
        }

        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: #6b7280;
        }

        .cta-form textarea {
            min-height: 100px;
        }

        .cta-form .btn-primary {
            width: 100%;
            text-align: center;
            font-size: 1.05rem;
            padding: 15px 28px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0E27;
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 50px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 6px;
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr 1fr;
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-vs {
                padding: 8px 0;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 100px;
            }
            .site-nav {
                height: 56px;
            }
            .step-bar {
                top: 56px;
                height: 44px;
            }
            .nav-links {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(2, 6, 23, 0.97);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 2px;
                transform: translateX(100%);
                transition: transform var(--transition-smooth);
                z-index: 1000;
                overflow-y: auto;
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-hamburger {
                display: flex;
            }
            .mobile-visible {
                display: block;
            }
            .nav-cta-btn.desktop-only {
                display: none;
            }
            .nav-cta-btn {
                display: inline-block;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
            }
            .section-header h2 {
                font-size: 1.65rem;
            }
            .section {
                padding: 50px 0;
            }
            .cta-inner {
                padding: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .step-label {
                font-size: 0.78rem;
                margin-left: 6px;
            }
            .step-connector {
                width: 20px;
                margin: 0 6px;
            }
            .step-dot {
                width: 24px;
                height: 24px;
                font-size: 0.7rem;
            }
            .hero-badge-row {
                gap: 10px;
            }
            .hero-badge {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .hero-qualification {
                padding: 16px 18px;
            }
            .comparison-panel {
                padding: 22px 18px;
            }
            .process-item {
                padding: 18px 16px;
                gap: 14px;
            }
            .process-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 22px;
                font-size: 0.95rem;
                width: 100%;
                text-align: center;
            }
            .hero-cta-wrap {
                flex-direction: column;
                width: 100%;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-value {
                font-size: 2rem;
            }
            .metric-card {
                padding: 20px 14px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .cta-info h2 {
                font-size: 1.4rem;
            }
            .hero-badge-row {
                gap: 6px;
            }
            .hero-badge {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            .step-label {
                font-size: 0.72rem;
            }
            .step-connector {
                width: 14px;
                margin: 0 4px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 64px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast), background var(--transition-fast);
        }
        a:hover {
            color: #33EAFF;
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff !important;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
            text-decoration: none;
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 30px rgba(0, 229, 255, 0.45);
            transform: translateY(-1px);
            color: #fff !important;
            text-decoration: none;
            background: linear-gradient(135deg, #33EAFF, #0099DD);
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            z-index: 1001;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .nav-hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-visible {
            display: none;
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .step-bar::-webkit-scrollbar {
            display: none;
        }
        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            max-width: var(--max-width);
            width: 100%;
            min-width: max-content;
            flex-shrink: 0;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            flex-shrink: 0;
        }
        .step-item:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.06);
            text-decoration: none;
        }
        .step-item.active-step {
            background: var(--accent-cyan);
            color: #020617;
            font-weight: 700;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
        }
        .step-connector {
            width: 28px;
            height: 1px;
            background: rgba(255, 255, 255, 0.2);
            flex-shrink: 0;
        }
        .step-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            flex-shrink: 0;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            padding: 80px 0 90px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            opacity: 0.35;
        }
        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(245, 158, 11, 0.06) 0%, transparent 50%),
                linear-gradient(180deg, rgba(2, 6, 23, 0.7) 0%, rgba(10, 14, 39, 0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #00B8D4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 620px;
        }
        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.3);
            text-decoration: none;
            cursor: pointer;
            border: none;
            letter-spacing: 0.03em;
        }
        .btn-primary:hover {
            box-shadow: 0 0 38px rgba(0, 229, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
            background: linear-gradient(135deg, #33EAFF, #0099DD);
        }
        .btn-secondary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            text-decoration: none;
            cursor: pointer;
            letter-spacing: 0.03em;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: #33EAFF;
            color: #33EAFF;
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }
        .btn-amber {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #E08A00);
            color: #020617;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(245, 158, 11, 0.35);
            text-decoration: none;
            cursor: pointer;
            border: none;
            letter-spacing: 0.03em;
        }
        .btn-amber:hover {
            box-shadow: 0 0 40px rgba(245, 158, 11, 0.55);
            transform: translateY(-2px);
            color: #020617;
            text-decoration: none;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 650px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--bg-card-alt);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }
        .card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 22px 20px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 12px;
        }
        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 4px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-cyan);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        /* ========== GRID ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        /* ========== METRICS ========== */
        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .metric-number.amber {
            color: var(--accent-amber);
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== COMPARE ========== */
        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .compare-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            box-shadow: var(--shadow-card);
        }
        .compare-panel.negative {
            border-color: rgba(255, 100, 100, 0.25);
            background: rgba(255, 60, 60, 0.04);
        }
        .compare-panel.positive {
            border-color: rgba(0, 229, 255, 0.35);
            background: rgba(0, 229, 255, 0.04);
            box-shadow: var(--shadow-glow);
        }
        .compare-panel h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            text-align: center;
        }
        .compare-panel ul {
            list-style: none;
            padding: 0;
        }
        .compare-panel ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.95rem;
            color: var(--text-muted);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .compare-panel ul li::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 7px;
        }
        .compare-panel.negative ul li::before {
            background: #ff5555;
        }
        .compare-panel.positive ul li::before {
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }
        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--accent-amber);
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
            padding: 0 10px;
            white-space: nowrap;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.1);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            transition: all var(--transition-fast);
            user-select: none;
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
        }
        .faq-question:hover {
            background: rgba(0, 229, 255, 0.04);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.1rem;
            color: var(--accent-cyan);
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-icon {
            background: var(--accent-cyan);
            color: #020617;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 20px 62px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, #0A1030 0%, #060E2E 40%, #0A0E27 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 80%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 229, 255, 0.07) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            right: -20%;
            width: 60%;
            height: 180%;
            background: radial-gradient(ellipse, rgba(245, 158, 11, 0.05) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .cta-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-text p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .cta-form {
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            box-shadow: var(--shadow-glow);
        }
        .cta-form .form-group {
            margin-bottom: 16px;
        }
        .cta-form label {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
            outline: none;
        }
        .cta-form textarea {
            min-height: 90px;
        }
        .cta-form .btn-submit {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #E08A00);
            color: #020617;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
            border: none;
            letter-spacing: 0.03em;
        }
        .cta-form .btn-submit:hover {
            box-shadow: 0 0 36px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
        }

        /* ========== PROCESS ========== */
        .process-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
        }
        .process-row::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.4), rgba(0, 229, 255, 0.4), transparent);
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }
        .process-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card-alt);
            border: 2px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
            transition: all var(--transition-smooth);
        }
        .process-step:hover .process-num {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.35);
            background: rgba(0, 229, 255, 0.08);
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #060B1F;
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 50px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: block;
            margin-bottom: 6px;
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-row::before {
                display: none;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                max-width: 600px;
            }
            .compare-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                padding: 8px 0;
                font-size: 1.3rem;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            :root {
                --section-gap: 70px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bg-nav);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px var(--padding-container);
                gap: 2px;
                transform: translateX(100%);
                transition: transform var(--transition-smooth);
                z-index: 999;
                overflow-y: auto;
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-hamburger {
                display: flex;
            }
            .mobile-visible {
                display: block;
            }
            .nav-cta-btn.desktop-only {
                display: none;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
            }
            .process-row {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-section {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .step-bar {
                height: 42px;
                top: 64px;
            }
            .step-item {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            :root {
                --section-gap: 50px;
                --padding-container: 16px;
            }
            .cta-inner {
                max-width: 100%;
            }
            .compare-wrapper {
                grid-template-columns: 1fr;
            }
            .compare-vs {
                text-align: center;
                font-size: 1.2rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-amber {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .metric-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-secondary {
                width: 100%;
                text-align: center;
            }
            .card-body {
                padding: 16px 14px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .metric-card {
                padding: 20px 14px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .compare-panel {
                padding: 20px 16px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 14px 16px 48px;
            }
        }

/* roulang page: category6 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 112px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: #33EAFF;
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
        }
        .nav-cta-btn:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.4);
            text-decoration: none;
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-cta-btn.mobile-visible {
            display: none;
        }
        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }
        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .step-bar::-webkit-scrollbar {
            display: none;
        }
        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            max-width: var(--max-width);
            width: 100%;
            min-width: max-content;
            flex-shrink: 0;
        }
        .step-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
            flex-shrink: 0;
        }
        .step-item:hover {
            color: #fff;
            text-decoration: none;
            background: rgba(0, 229, 255, 0.06);
        }
        .step-item.active-step {
            color: #fff;
            background: var(--accent-cyan);
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
        }
        .step-connector {
            width: 20px;
            height: 1px;
            background: rgba(148, 163, 184, 0.3);
            flex-shrink: 0;
            margin: 0 2px;
        }
        .step-connector.dashed {
            background: repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.35) 0px, rgba(148, 163, 184, 0.35) 4px, transparent 4px, transparent 8px);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 60px var(--padding-container);
            border-bottom: 1px solid var(--border-subtle);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.08) 0%, transparent 70%),
                radial-gradient(ellipse at 30% 50%, rgba(245, 158, 11, 0.05) 0%, transparent 60%);
            pointer-events: none;
            z-index: 1;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 229, 255, 0.015) 2px, rgba(0, 229, 255, 0.015) 4px),
                repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 229, 255, 0.01) 2px, rgba(0, 229, 255, 0.01) 4px);
            pointer-events: none;
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            width: 100%;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid var(--border-subtle);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            animation: pulse-badge 2.5s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0px rgba(0, 229, 255, 0.2);
            }
            50% {
                box-shadow: 0 0 20px rgba(0, 229, 255, 0.45);
            }
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), #33DDFF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-countdown-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .countdown-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .countdown-box {
            display: flex;
            gap: 6px;
            align-items: center;
        }
        .countdown-unit {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-md);
            padding: 10px 14px;
            min-width: 52px;
            text-align: center;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.1);
        }
        .countdown-unit .cd-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
        }
        .countdown-unit .cd-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 2px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .countdown-sep {
            font-size: 1.4rem;
            color: var(--accent-cyan);
            font-weight: 700;
            animation: blink-sep 1s step-end infinite;
        }
        @keyframes blink-sep {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }
        .btn-primary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(0, 229, 255, 0.3);
            cursor: pointer;
            border: none;
            letter-spacing: 0.02em;
        }
        .btn-primary:hover {
            filter: brightness(1.18);
            box-shadow: 0 0 35px rgba(0, 229, 255, 0.5);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: #33EAFF;
            color: #33EAFF;
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
        }
        .btn-amber {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 22px rgba(245, 158, 11, 0.3);
            cursor: pointer;
            border: none;
            letter-spacing: 0.02em;
        }
        .btn-amber:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 35px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) var(--padding-container);
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        /* ========== METRICS ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .metric-card:hover::before {
            opacity: 1;
        }
        .metric-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
            margin-bottom: 6px;
            font-variant-numeric: tabular-nums;
        }
        .metric-number.amber {
            color: var(--accent-amber);
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }
        .service-large-wrap {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .service-small-wrap {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .service-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .service-card .service-img {
            flex-shrink: 0;
            width: 120px;
            height: 90px;
            border-radius: var(--radius-md);
            overflow: hidden;
            object-fit: cover;
            border: 1px solid var(--border-subtle);
        }
        .service-card .service-info h3 {
            font-size: 1.25rem;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-weight: 600;
        }
        .service-card .service-info p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 10px;
        }
        .service-card .service-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .service-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 229, 255, 0.08);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 229, 255, 0.2);
            letter-spacing: 0.02em;
        }
        .service-tag.amber {
            background: rgba(245, 158, 11, 0.08);
            color: var(--accent-amber);
            border-color: rgba(245, 158, 11, 0.25);
        }
        .service-card-sm {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            text-align: center;
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 140px;
        }
        .service-card-sm:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .service-card-sm .sm-icon {
            font-size: 2rem;
            margin-bottom: 8px;
        }
        .service-card-sm h4 {
            font-size: 1rem;
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 4px;
        }
        .service-card-sm p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ========== PROCESS ========== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .process-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .process-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .process-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 14px;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
        }
        .process-card h4 {
            font-size: 1.05rem;
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .process-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 80px 1fr;
            gap: 0;
            align-items: stretch;
        }
        .comparison-col {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }
        .comparison-col.before {
            border-color: rgba(148, 163, 184, 0.2);
        }
        .comparison-col.after {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            background: rgba(0, 229, 255, 0.03);
        }
        .comparison-col h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 16px;
            text-align: center;
        }
        .comparison-col.before h3 {
            color: var(--text-muted);
        }
        .comparison-col.after h3 {
            color: var(--accent-cyan);
        }
        .comparison-col ul {
            list-style: none;
            padding: 0;
        }
        .comparison-col ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.5;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .comparison-col ul li:last-child {
            border-bottom: none;
        }
        .comparison-col .check-icon {
            color: var(--accent-cyan);
            flex-shrink: 0;
            font-weight: 700;
        }
        .comparison-col .cross-icon {
            color: #ef4444;
            flex-shrink: 0;
            font-weight: 700;
        }
        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .vs-badge {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 30px rgba(245, 158, 11, 0.35);
            letter-spacing: 0.04em;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            display: flex;
            gap: 40px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
            max-width: 900px;
            margin: 0 auto;
        }
        .brand-intro-img {
            flex-shrink: 0;
            width: 200px;
            height: 150px;
            border-radius: var(--radius-md);
            overflow: hidden;
            object-fit: cover;
            border: 1px solid var(--border-subtle);
        }
        .brand-intro-text h3 {
            font-size: 1.3rem;
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 10px;
        }
        .brand-intro-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            transition: all var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            background: rgba(0, 229, 255, 0.03);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-icon {
            background: var(--accent-cyan);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px 64px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, #0A1628 0%, #061020 40%, #0A0E27 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 80%;
            height: 180%;
            background: radial-gradient(ellipse, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .cta-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .cta-text p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .cta-form {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-glow);
        }
        .cta-form .form-group {
            margin-bottom: 14px;
        }
        .cta-form label {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 5px;
            font-weight: 500;
        }
        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
            outline: none;
        }
        .cta-form textarea {
            min-height: 90px;
        }
        .cta-form .btn-submit {
            width: 100%;
            padding: 13px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
            border: none;
            letter-spacing: 0.03em;
        }
        .cta-form .btn-submit:hover {
            filter: brightness(1.15);
            box-shadow: 0 0 32px rgba(245, 158, 11, 0.45);
            transform: translateY(-1px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #020617;
            border-top: 1px solid rgba(0, 229, 255, 0.08);
            padding: 50px var(--padding-container) 30px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: var(--text-primary);
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col p {
            line-height: 1.6;
            margin-bottom: 6px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            padding: 4px 0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 70px;
                --padding-container: 20px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-vs {
                order: -1;
            }
            .vs-badge {
                width: 48px;
                height: 48px;
                font-size: 0.9rem;
            }
            .cta-inner {
                grid-template-columns: 1fr;
            }
            .brand-intro-block {
                flex-direction: column;
                text-align: center;
            }
            .brand-intro-img {
                width: 160px;
                height: 120px;
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 50px;
                --padding-container: 16px;
            }
            body {
                padding-top: 112px;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-section {
                min-height: 420px;
                padding: 40px 16px;
            }
            .countdown-unit {
                padding: 8px 10px;
                min-width: 40px;
            }
            .countdown-unit .cd-num {
                font-size: 1.2rem;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-nav);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 4px;
                display: none;
                border-bottom: 1px solid var(--border-subtle);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                z-index: 998;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-cta-btn.mobile-visible {
                display: block;
                text-align: center;
                margin-top: 8px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 2rem;
            }
            .service-card {
                flex-direction: column;
                padding: 20px;
            }
            .service-card .service-img {
                width: 100%;
                height: 120px;
            }
            .process-list {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .brand-intro-block {
                padding: 20px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 14px 50px;
                font-size: 0.85rem;
            }
            .cta-text h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .step-item {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .step-connector {
                width: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.4rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 18px 12px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .process-list {
                grid-template-columns: 1fr;
            }
            .countdown-box {
                gap: 3px;
            }
            .countdown-unit {
                padding: 6px 8px;
                min-width: 34px;
            }
            .countdown-unit .cd-num {
                font-size: 1rem;
            }
            .countdown-unit .cd-label {
                font-size: 0.6rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category7 */
:root {
            --bg-deep: #020617;
            --bg-dark: #0A0E27;
            --bg-card: #111827;
            --bg-card-alt: #1E293B;
            --bg-nav: rgba(2, 6, 23, 0.92);
            --bg-step-bar: #0F172A;
            --text-primary: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --accent-cyan: #00E5FF;
            --accent-cyan-dark: #0088CC;
            --accent-amber: #F59E0B;
            --border-subtle: rgba(0, 229, 255, 0.15);
            --border-glow: rgba(0, 229, 255, 0.5);
            --border-amber: rgba(245, 158, 11, 0.4);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15), 0 4px 24px rgba(0, 0, 0, 0.5);
            --shadow-amber-glow: 0 0 28px rgba(245, 158, 11, 0.2), 0 4px 20px rgba(0, 0, 0, 0.5);
            --font-stack: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-width: 1280px;
            --padding-container: 24px;
            --section-gap: 100px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 112px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: #33EAFF;
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 3px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-container);
            padding-right: var(--padding-container);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-nav.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--padding-container);
            height: 100%;
        }

        .nav-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), #0066AA);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            text-decoration: none;
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.93rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.08);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.12);
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-block;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(0, 229, 255, 0.35);
            color: #fff;
            text-decoration: none;
        }

        .nav-cta-btn.mobile-visible {
            display: none;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
            z-index: 1001;
        }

        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== STEP BAR ========== */
        .step-bar {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 999;
            height: 48px;
            background: var(--bg-step-bar);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .step-bar::-webkit-scrollbar {
            display: none;
        }

        .step-bar-inner {
            display: flex;
            align-items: center;
            gap: 0;
            margin: 0 auto;
            padding: 0 var(--padding-container);
            max-width: var(--max-width);
            width: 100%;
            min-width: max-content;
            justify-content: center;
            flex-shrink: 0;
        }

        .step-item {
            display: flex;
            align-items: center;
            gap: 0;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .step-link {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            text-decoration: none;
            background: transparent;
            white-space: nowrap;
        }

        .step-link:hover {
            color: #fff;
            background: rgba(0, 229, 255, 0.06);
            text-decoration: none;
        }

        .step-link.active-step {
            color: #fff;
            background: var(--accent-cyan);
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.3);
        }

        .step-arrow {
            color: rgba(0, 229, 255, 0.3);
            font-size: 0.8rem;
            padding: 0 4px;
            flex-shrink: 0;
            user-select: none;
        }

        /* ========== HERO BENTO ========== */
        .hero-section {
            position: relative;
            padding: 70px 0 60px;
            background: var(--bg-deep);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            filter: brightness(0.6);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at 40% 50%, rgba(0, 229, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(245, 158, 11, 0.05) 0%, transparent 50%),
                linear-gradient(180deg, rgba(2, 6, 23, 0.3) 0%, rgba(2, 6, 23, 0.85) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-bento-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
            align-items: start;
        }

        .hero-main-block {
            grid-row: 1 / 3;
            background: rgba(17, 24, 39, 0.75);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            box-shadow: var(--shadow-glow);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .hero-main-block .hero-label {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
            width: fit-content;
        }

        .hero-main-block h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .hero-main-block h1 .highlight {
            color: var(--accent-cyan);
        }

        .hero-main-block .hero-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
            text-align: center;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.4), 0 6px 20px rgba(0, 0, 0, 0.5);
            color: #fff;
            text-decoration: none;
        }

        .btn-secondary {
            display: inline-block;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            text-decoration: none;
            text-align: center;
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            border-color: #33EAFF;
            color: #33EAFF;
            text-decoration: none;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.2);
        }

        .hero-mini-card {
            background: rgba(17, 24, 39, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .hero-mini-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        .hero-mini-card .mini-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.3rem;
        }

        .hero-mini-card .mini-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .hero-mini-card .mini-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }

        .hero-cta-strip {
            grid-column: 2;
            background: rgba(17, 24, 39, 0.65);
            border: 1px solid rgba(245, 158, 11, 0.25);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            flex-wrap: wrap;
        }

        .hero-cta-strip span {
            font-size: 0.95rem;
            color: var(--text-body);
            font-weight: 500;
        }

        .hero-cta-strip .btn-amber-sm {
            display: inline-block;
            padding: 9px 20px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 0.88rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
            cursor: pointer;
        }

        .hero-cta-strip .btn-amber-sm:hover {
            box-shadow: 0 0 22px rgba(245, 158, 11, 0.45);
            transform: translateY(-1px);
            color: #1a1a1a;
            text-decoration: none;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 20px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--accent-cyan);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .section-header .section-subtitle {
            font-size: 1.02rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== METRICS ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-amber));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .metric-number.amber {
            color: var(--accent-amber);
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== SERVICE MATRIX ASYMMETRIC ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }

        .service-large-cards {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .service-large-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            gap: 22px;
            align-items: flex-start;
        }

        .service-large-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .service-large-card .svc-img {
            width: 130px;
            height: 130px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-card-alt);
        }

        .service-large-card .svc-info h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .service-large-card .svc-info p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .svc-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .svc-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.2);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 500;
        }

        .service-small-cards {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .service-small-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
        }

        .service-small-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateX(3px);
        }

        .service-small-card .sm-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.2rem;
        }

        .service-small-card .sm-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .service-small-card .sm-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.4;
        }

        /* ========== SCENARIOS ========== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .scenario-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .scenario-card .sc-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-card-alt);
        }

        .scenario-card .sc-body {
            padding: 20px;
        }

        .scenario-card .sc-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .scenario-card .sc-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== COMPARISON ========== */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: stretch;
            max-width: 900px;
            margin: 0 auto;
        }

        .comparison-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            box-shadow: var(--shadow-card);
        }

        .comparison-panel.before {
            border-left: 4px solid rgba(148, 163, 184, 0.5);
        }

        .comparison-panel.after {
            border-left: 4px solid var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }

        .comparison-panel h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-align: center;
        }

        .comparison-panel ul {
            list-style: none;
            padding: 0;
        }

        .comparison-panel ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.93rem;
            color: var(--text-body);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .comparison-panel ul li::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .comparison-panel.before ul li::before {
            background: rgba(148, 163, 184, 0.6);
        }

        .comparison-panel.after ul li::before {
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }

        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .vs-badge {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: #1a1a1a;
            box-shadow: 0 0 28px rgba(245, 158, 11, 0.35);
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            display: flex;
            gap: 36px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-card);
        }

        .brand-intro-block .brand-img {
            width: 200px;
            height: 200px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-card-alt);
        }

        .brand-intro-block .brand-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .brand-intro-block .brand-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            width: 100%;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            transition: background var(--transition-fast);
            line-height: 1.5;
        }

        .faq-question:hover {
            background: rgba(0, 229, 255, 0.04);
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1rem;
            color: var(--accent-cyan);
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            background: var(--accent-cyan);
            color: #1a1a1a;
        }

        .faq-arrow {
            margin-left: auto;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 20px 20px 66px;
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== CTA FORM ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(0, 229, 255, 0.06) 0%, rgba(2, 6, 23, 0.95) 60%);
            border-top: 1px solid rgba(0, 229, 255, 0.12);
            border-bottom: 1px solid rgba(0, 229, 255, 0.08);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.07) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .cta-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .cta-text p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .cta-form {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            box-shadow: var(--shadow-glow);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-card-alt);
            border: 1px solid var(--border-subtle);
            color: var(--text-body);
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            resize: vertical;
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
            outline: none;
        }

        .cta-form textarea {
            min-height: 100px;
        }

        .btn-submit {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-amber), #D97706);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            text-align: center;
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
            width: 100%;
        }

        .btn-submit:hover {
            box-shadow: 0 0 36px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #060B1A;
            border-top: 1px solid rgba(0, 229, 255, 0.1);
            padding: 50px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-col p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--accent-cyan);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 60px;
            }

            .hero-bento-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }

            .hero-main-block {
                grid-row: auto;
            }

            .hero-cta-strip {
                grid-column: 1;
            }

            .hero-main-block h1 {
                font-size: 2.2rem;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-matrix {
                grid-template-columns: 1fr;
            }

            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .comparison-vs {
                order: -1;
            }

            .vs-badge {
                width: 44px;
                height: 44px;
                font-size: 0.9rem;
            }

            .brand-intro-block {
                flex-direction: column;
                text-align: center;
            }

            .brand-intro-block .brand-img {
                width: 160px;
                height: 160px;
            }

            .cta-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .nav-links a {
                padding: 7px 10px;
                font-size: 0.85rem;
            }

            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 44px;
                --padding-container: 16px;
            }

            body {
                padding-top: 112px;
            }

            .nav-links {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-nav);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid rgba(0, 229, 255, 0.1);
                max-height: 70vh;
                overflow-y: auto;
                z-index: 999;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }

            .nav-hamburger {
                display: flex;
            }

            .nav-cta-btn {
                display: none;
            }

            .nav-cta-btn.mobile-visible {
                display: block;
                width: 100%;
                text-align: center;
                margin-top: 6px;
                padding: 12px 20px;
                border-radius: var(--radius-sm);
            }

            .step-bar {
                height: 42px;
                top: 64px;
            }

            .step-link {
                padding: 6px 12px;
                font-size: 0.78rem;
            }

            .step-arrow {
                font-size: 0.7rem;
                padding: 0 2px;
            }

            .hero-section {
                padding: 40px 0 36px;
            }

            .hero-main-block {
                padding: 26px 20px;
            }

            .hero-main-block h1 {
                font-size: 1.8rem;
            }

            .hero-main-block .hero-desc {
                font-size: 0.93rem;
            }

            .hero-mini-card {
                padding: 16px 14px;
            }

            .hero-cta-strip {
                padding: 14px 16px;
                flex-direction: column;
                text-align: center;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .metric-card {
                padding: 20px 14px;
            }

            .metric-number {
                font-size: 2rem;
            }

            .service-large-card {
                flex-direction: column;
                padding: 20px 16px;
            }

            .service-large-card .svc-img {
                width: 100%;
                height: 160px;
            }

            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .comparison-panel {
                padding: 20px 16px;
            }

            .brand-intro-block {
                padding: 24px 18px;
                gap: 20px;
            }

            .brand-intro-block .brand-img {
                width: 130px;
                height: 130px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }

            .faq-answer-inner {
                padding: 0 16px 16px 50px;
                font-size: 0.85rem;
            }

            .cta-inner {
                gap: 18px;
            }

            .cta-form {
                padding: 22px 18px;
            }

            .cta-text h2 {
                font-size: 1.5rem;
            }

            .section-header h2 {
                font-size: 1.7rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .btn-primary,
            .btn-secondary {
                padding: 11px 22px;
                font-size: 0.9rem;
                width: 100%;
                text-align: center;
            }

            .hero-cta-row {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .hero-main-block h1 {
                font-size: 1.5rem;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .metric-number {
                font-size: 1.6rem;
            }

            .metric-label {
                font-size: 0.78rem;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .comparison-panel h3 {
                font-size: 1rem;
            }

            .comparison-panel ul li {
                font-size: 0.85rem;
            }

            .brand-intro-block .brand-text h3 {
                font-size: 1.2rem;
            }

            .brand-intro-block .brand-text p {
                font-size: 0.85rem;
            }

            .cta-text h2 {
                font-size: 1.3rem;
            }
        }