/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.5);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #6B7A90;
            --border-glass: rgba(0, 240, 255, 0.15);
            --border-hover: rgba(0, 240, 255, 0.5);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --transition-fast: 0.25s ease;
            --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-md: 1.125rem;
            --font-size-lg: 1.375rem;
            --font-size-xl: 1.75rem;
            --font-size-2xl: 2.25rem;
            --font-size-3xl: 3rem;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
        }

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

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

        a:hover, a:focus {
            color: var(--accent-blue);
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        ::selection {
            background: var(--accent-blue);
            color: var(--text-white);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* === Header / Navigation === */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            transition: all var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem var(--spacing-md);
            max-width: 1200px;
            margin: 0 auto;
            gap: var(--spacing-sm);
            flex-wrap: nowrap;
        }

        .nav-logo {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-shrink: 0;
            min-width: 0;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .nav-logo .logo-icon {
            color: var(--accent-cyan);
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .nav-logo span {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-shrink: 1;
            min-width: 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            padding: 0.5rem 1rem;
            color: var(--text-silver);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-link:hover, .nav-link:focus {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-hover);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 0.55rem 1.1rem;
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover, .btn-login:focus {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

        .btn-signup {
            padding: 0.55rem 1.3rem;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            transition: all var(--transition-fast);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            white-space: nowrap;
        }

        .btn-signup:hover, .btn-signup:focus {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-glass);
            color: var(--text-white);
            padding: 0.5rem 0.7rem;
            border-radius: 8px;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            background: rgba(8, 9, 15, 0.98);
            border-top: 1px solid var(--border-glass);
            padding: 0.75rem var(--spacing-md);
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
        }

        .mobile-menu.open {
            max-height: 300px;
        }

        .mobile-link {
            display: block;
            padding: 0.7rem 1rem;
            color: var(--text-silver);
            font-size: 0.95rem;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

        .mobile-link:hover, .mobile-link:focus {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        /* === Hero === */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--bg-primary);
            padding-top: 70px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.55;
            z-index: 1;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.75) 0%, rgba(8, 9, 15, 0.85) 50%, rgba(13, 17, 30, 0.95) 100%);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 800px;
            padding: var(--spacing-xl) var(--spacing-md);
        }

        .hero-badge {
            display: inline-block;
            padding: 0.45rem 1.2rem;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-hover);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: var(--spacing-md);
            animation: pulse-badge 2.5s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%, 100% { box-shadow: 0 0 10px rgba(0, 240, 255, 0.2); }
            50% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.5); }
        }

        .hero-title {
            font-size: clamp(1.8rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.02em;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }

        .hero-title .highlight {
            color: var(--accent-cyan);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }

        .hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--text-silver);
            max-width: 650px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.7;
        }

        .hero-play-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.15);
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-size: 1.5rem;
            margin: 0 auto var(--spacing-md);
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
            animation: play-pulse 2s ease-in-out infinite;
        }

        .hero-play-btn:hover, .hero-play-btn:focus {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: 0 0 50px rgba(0, 240, 255, 0.7);
            transform: scale(1.08);
        }

        @keyframes play-pulse {
            0%, 100% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.35); }
            50% { box-shadow: 0 0 55px rgba(0, 240, 255, 0.7); }
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-md);
        }

        .btn-primary {
            padding: 0.8rem 2rem;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            transition: all var(--transition-fast);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary:hover, .btn-primary:focus {
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.65);
            transform: translateY(-3px);
            color: #fff;
        }

        .btn-secondary {
            padding: 0.8rem 2rem;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            backdrop-filter: blur(10px);
        }

        .btn-secondary:hover, .btn-secondary:focus {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat-number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* === Common Section Styles === */
        .section {
            padding: var(--spacing-2xl) 0;
            position: relative;
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent-cyan);
            margin-bottom: 0.6rem;
        }

        .section-title {
            font-size: clamp(1.5rem, 3.5vw, 2.1rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            line-height: 1.2;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-silver);
            max-width: 700px;
            line-height: 1.65;
        }

        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-glass);
            transition: all var(--transition-fast);
        }

        .glass-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 8px 40px rgba(0, 240, 255, 0.2);
        }

        /* === Metrics Dashboard === */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }

        .metric-card {
            text-align: center;
            padding: var(--spacing-lg) var(--spacing-sm);
        }

        .metric-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 0.5rem;
        }

        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* === Pain Points === */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .pain-item {
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            padding: var(--spacing-md);
        }

        .pain-icon {
            font-size: 1.5rem;
            color: #FF4500;
            flex-shrink: 0;
            margin-top: 0.2rem;
        }

        .pain-text h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.3rem;
        }

        .pain-text p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.55;
        }

        /* === Service Matrix / Game Grid === */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }

        .game-card {
            position: relative;
            padding: 0;
            overflow: hidden;
            cursor: pointer;
            border-radius: var(--radius-md);
            min-height: 200px;
        }

        .game-card-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .game-card:hover .game-card-img {
            transform: scale(1.08);
        }

        .game-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 9, 15, 0.2) 0%, rgba(8, 9, 15, 0.85) 70%, rgba(8, 9, 15, 0.95) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--spacing-md);
        }

        .game-card-tag {
            position: absolute;
            top: 0.8rem;
            right: 0.8rem;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.65rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            background: rgba(255, 0, 0, 0.8);
            color: #fff;
        }

        .game-card-tag.hot {
            background: linear-gradient(135deg, #FF4500, #FF8500);
        }

        .game-card-tag.new {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
        }

        .game-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.2rem;
        }

        .game-card p {
            font-size: 0.8rem;
            color: var(--text-silver);
            margin-bottom: 0;
        }

        /* === Steps === */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .step-card {
            position: relative;
            padding: var(--spacing-lg) var(--spacing-md);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: var(--spacing-sm);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        /* === Result Comparison === */
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
        }

        .compare-table th {
            padding: 1rem var(--spacing-md);
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.9rem;
            text-align: left;
            border-bottom: 1px solid var(--border-glass);
        }

        .compare-table td {
            padding: 0.9rem var(--spacing-md);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .check {
            color: #00E676;
        }

        .compare-table .cross {
            color: #FF5252;
        }

        /* === Steps / Guide === */
        .beginner-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
        }

        .beginner-step {
            padding: var(--spacing-md);
            border-left: 3px solid var(--accent-cyan);
        }

        .beginner-step h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 0.4rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .beginner-step p {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-bottom: 0;
            line-height: 1.55;
        }

        /* === Activity Wall === */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-sm);
        }

        .activity-card {
            overflow: hidden;
            cursor: pointer;
        }

        .activity-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform var(--transition-smooth);
        }

        .activity-card:hover .activity-img {
            transform: scale(1.06);
        }

        .activity-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0.6rem 0 0.3rem;
        }

        .activity-body p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.5;
        }

        .activity-btn {
            margin-top: 0.5rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: none;
            border: none;
            padding: 0;
        }

        .activity-btn:hover, .activity-btn:focus {
            color: var(--accent-blue);
        }

        /* === Info List / CMS === */
        .info-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-lg);
        }

        .info-list {
            list-style: none;
        }

        .info-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: 0.9rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .info-item:last-child {
            border-bottom: none;
        }

        .info-item-icon {
            color: var(--accent-cyan);
            font-size: 0.9rem;
            margin-top: 0.35rem;
            flex-shrink: 0;
        }

        .info-item-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 0.2rem;
        }

        .info-item-content h4 a {
            color: var(--text-white);
            transition: color var(--transition-fast);
        }

        .info-item-content h4 a:hover {
            color: var(--accent-cyan);
        }

        .info-item-content .info-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }

        .info-item-content .info-desc {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-top: 0.3rem;
            line-height: 1.5;
        }

        .info-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .info-sidebar-card {
            padding: var(--spacing-md);
        }

        .info-sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.8rem;
        }

        .info-sidebar-list {
            list-style: none;
        }

        .info-sidebar-list li {
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .info-sidebar-list li:last-child {
            border-bottom: none;
        }

        .info-sidebar-list i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
        }

        /* === FAQ === */
        .faq-list {
            max-width: 800px;
        }

        .faq-item {
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            margin-bottom: 0.75rem;
            overflow: hidden;
            background: var(--bg-card);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }

        .faq-question {
            padding: 1rem var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-white);
            transition: all var(--transition-fast);
            border: none;
            background: none;
            text-align: left;
            width: 100%;
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-icon {
            flex-shrink: 0;
            margin-left: var(--spacing-sm);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

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

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
            padding-bottom: 1rem;
        }

        /* === CTA / Mini Form === */
        .cta-section {
            text-align: center;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(0, 82, 255, 0.15) 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-md);
            border: 1px solid var(--border-glass);
        }

        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-silver);
            max-width: 550px;
            margin: 0 auto var(--spacing-md);
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 0.6rem;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 480px;
            margin: 0 auto;
        }

        .cta-input {
            flex: 1;
            min-width: 220px;
            padding: 0.8rem 1.2rem;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            color: var(--text-white);
            font-size: 0.95rem;
            font-family: inherit;
            transition: all var(--transition-fast);
            outline: none;
        }

        .cta-input::placeholder {
            color: var(--text-muted);
        }

        .cta-input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-cta-submit {
            padding: 0.8rem 1.8rem;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            transition: all var(--transition-fast);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.35);
        }

        .btn-cta-submit:hover, .btn-cta-submit:focus {
            box-shadow: 0 0 45px rgba(0, 240, 255, 0.65);
            transform: translateY(-2px);
        }

        /* === Footer === */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            padding: var(--spacing-xl) 0 var(--spacing-sm);
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.6rem;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 400px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.8rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .footer-bottom .domain-info {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 0.3rem;
        }

        /* === FAB === */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 950;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF) 1;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            opacity: 0.6;
            animation: fab-glow 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.8);
        }

        .fab-left:active {
            transform: scale(0.95);
        }

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            animation: fab-blink 1.5s ease-in-out infinite;
            border: 2px solid var(--bg-primary);
        }

        @keyframes fab-glow {
            0%, 100% { box-shadow: 0 0 10px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 25px rgba(0, 240, 255, 0.7); }
        }

        @keyframes fab-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* === Responsive === */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .game-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .beginner-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .nav-actions {
                display: flex;
                gap: 0.4rem;
            }

            .btn-login {
                padding: 0.5rem 0.8rem;
                font-size: 0.75rem;
            }

            .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.75rem;
            }

            .mobile-menu {
                display: block;
            }

            .mobile-menu.hidden-mobile {
                display: none;
            }

            .mobile-menu.open {
                display: block;
            }

            .pain-grid {
                grid-template-columns: 1fr;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .beginner-steps {
                grid-template-columns: 1fr;
            }
            .activity-grid {
                grid-template-columns: 1fr;
            }
            .compare-table th, .compare-table td {
                padding: 0.7rem 0.6rem;
                font-size: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .hero {
                min-height: 80vh;
                padding-top: 60px;
            }
            .hero-stats {
                gap: var(--spacing-sm);
            }
            .hero-stat-number {
                font-size: 1.2rem;
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                bottom: 4rem;
                left: 0.75rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-xl: 2.5rem;
                --spacing-2xl: 3.5rem;
                --spacing-lg: 1.5rem;
                --spacing-md: 1rem;
                --spacing-sm: 0.75rem;
            }

            .nav-logo {
                font-size: 0.85rem;
                max-width: 160px;
            }

            .nav-logo .logo-icon {
                font-size: 1.1rem;
            }

            .btn-login {
                padding: 0.45rem 0.6rem;
                font-size: 0.7rem;
            }

            .btn-signup {
                padding: 0.45rem 0.8rem;
                font-size: 0.7rem;
            }

            .hero-title {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-play-btn {
                width: 56px;
                height: 56px;
                font-size: 1.2rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.5rem;
            }
            .metric-value {
                font-size: 1.5rem;
            }
            .game-grid {
                grid-template-columns: 1fr;
                gap: 0.75rem;
            }
            .game-card {
                min-height: 170px;
            }
            .compare-table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }
            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-input {
                min-width: 100%;
            }
            .btn-cta-submit {
                width: 100%;
            }
            .activity-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
/* ============================================
           DESIGN SYSTEM VARIABLES
           ============================================ */
        :root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #111827;
            --bg-card: rgba(255, 255, 255, 0.035);
            --bg-card-hover: rgba(255, 255, 255, 0.06);
            --bg-glass: rgba(13, 17, 30, 0.72);
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-gold: #C5A059;
            --accent-amber: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --text-gold: #D4AC0D;
            --border-subtle: rgba(0, 240, 255, 0.12);
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-gold: rgba(197, 160, 89, 0.35);
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.25);
            --glow-cyan-strong: 0 0 32px rgba(0, 240, 255, 0.45);
            --glow-blue: 0 0 16px rgba(0, 82, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(0, 240, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-xxl: 6rem;
            --font-body: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --font-display: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
        }

        /* ============================================
           BASE RESET & GLOBAL STYLES
           ============================================ */
        *, *::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-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            background-image: 
                radial-gradient(ellipse at 15% 20%, rgba(0, 82, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 80%, rgba(0, 240, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(13, 17, 30, 0.4) 0%, transparent 70%);
            background-attachment: fixed;
        }

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

        /* ============================================
           CONTAINER & LAYOUT
           ============================================ */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section {
            padding: var(--space-xl) 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .section-header {
            margin-bottom: var(--space-lg);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.6;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ============================================
           HEADER & NAVIGATION
           ============================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--nav-height);
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: var(--space-md);
        }

        .logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: var(--accent-secondary);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.2);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-login {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 6px;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .btn-login:hover {
            color: var(--text-primary);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 10px 20px;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            text-decoration: none;
            transition: box-shadow var(--transition-base), transform var(--transition-fast);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ============================================
           HERO SECTION
           ============================================ */
        .hero {
            padding: calc(var(--nav-height) + 60px) 0 var(--space-xl);
            position: relative;
            overflow: hidden;
            background:
                radial-gradient(ellipse at 70% 40%, rgba(0, 82, 255, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 55%);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-xl);
            align-items: center;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-md);
            color: var(--text-primary);
        }

        .hero-content .lead {
            font-size: 1.2rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: var(--space-lg);
            max-width: 560px;
        }

        .hero-form-card {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            box-shadow: var(--shadow-card);
        }

        .hero-form-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
        }

        .hero-form-card p {
            color: var(--text-muted);
            margin-bottom: var(--space-md);
            font-size: 0.95rem;
        }

        .form-group {
            margin-bottom: var(--space-md);
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            outline: none;
        }

        .form-control:focus {
            border-color: var(--accent-secondary);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.15);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.01em;
            transition: transform var(--transition-fast), box-shadow var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
            width: 100%;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.4);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--accent-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 24px;
            border-radius: 8px;
            border: 1px solid var(--border-glow);
            cursor: pointer;
            text-decoration: none;
            transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
            color: var(--accent-secondary);
        }

        /* ============================================
           METRICS DASHBOARD
           ============================================ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }

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

        .metric-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-secondary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.03em;
            margin-bottom: 4px;
        }

        .metric-detail {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ============================================
           TRUST MATRIX / COMPARISON
           ============================================ */
        .comparison-table-wrap {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(0, 240, 255, 0.05);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .comparison-table th {
            background: rgba(0, 240, 255, 0.04);
            font-weight: 700;
            color: var(--text-primary);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.02em;
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .badge-check {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #00E676;
            font-weight: 600;
            font-size: 0.85rem;
        }

        .badge-warning {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #FFB300;
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* ============================================
           SERVICE MATRIX
           ============================================ */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: var(--space-lg);
            transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
            position: relative;
        }

        .service-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--space-sm);
            font-size: 1.4rem;
            color: var(--accent-secondary);
            border: 1px solid var(--border-subtle);
        }

        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ============================================
           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: var(--space-sm);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md) var(--space-md);
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            gap: var(--space-sm);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question .faq-icon {
            color: var(--accent-secondary);
            font-size: 1rem;
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
            padding: 0 var(--space-md);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-bottom: var(--space-md);
        }

        /* ============================================
           CTA SECTION
           ============================================ */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.1), rgba(0, 240, 255, 0.08));
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: var(--space-xl) 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: var(--space-sm);
        }

        .cta-section p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto var(--space-md);
            font-size: 1.1rem;
        }

        /* ============================================
           FOOTER
           ============================================ */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: var(--space-xl) 0 var(--space-md);
            color: var(--text-secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 400px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--space-sm);
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--accent-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--space-md);
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .domain-info {
            color: var(--text-muted);
        }

        /* ============================================
           FAB
           ============================================ */
        .fab {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(10, 12, 20, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-image: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary)) 1;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: transform var(--transition-fast), box-shadow var(--transition-base), opacity var(--transition-fast);
            opacity: 0.7;
        }

        .fab:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.7);
        }

        .fab:active {
            transform: scale(0.95);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
        }

        .fab i {
            font-size: 1.4rem;
            color: var(--accent-secondary);
        }

        .fab .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: #FF3B5C;
            border-radius: 50%;
            border: 2px solid #08090F;
            box-shadow: 0 0 8px rgba(255, 59, 92, 0.6);
        }

        /* ============================================
           RESPONSIVE
           ============================================ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                flex-direction: column;
                padding: var(--space-sm);
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-actions {
                margin-left: auto;
            }
            .nav-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 12px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero {
                padding-top: calc(var(--nav-height) + 40px);
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .btn-login {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            .logo {
                font-size: 0.95rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                margin-right: 6px;
            }
            .fab {
                left: 16px;
                bottom: 80px;
                width: 44px;
                height: 44px;
            }
        }

/* roulang page: article */
/* ============================================
           DESIGN SYSTEM - DARK TECH BLUE + GLASSMORPHISM
           ============================================ */
        :root {
            /* Color System */
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #0A0E1A;
            --bg-card: rgba(13, 17, 30, 0.72);
            --bg-card-hover: rgba(17, 24, 39, 0.85);
            --bg-glass: rgba(255, 255, 255, 0.04);
            --bg-glass-strong: rgba(255, 255, 255, 0.07);
            --accent-blue: #0052FF;
            --accent-blue-bright: #2979FF;
            --accent-cyan: #00F0FF;
            --accent-cyan-soft: rgba(0, 240, 255, 0.12);
            --accent-blue-soft: rgba(0, 82, 255, 0.1);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8B95A7;
            --text-cyan: #00E5FF;
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glass-strong: rgba(255, 255, 255, 0.14);
            --border-electric: rgba(0, 240, 255, 0.35);
            --border-electric-strong: rgba(0, 240, 255, 0.65);
            --border-blue: rgba(0, 82, 255, 0.3);

            /* Shadows & Glow */
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(0, 240, 255, 0.18);
            --shadow-glow-cyan: 0 0 16px rgba(0, 240, 255, 0.4);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.35);
            --shadow-glow-button: 0 4px 24px rgba(0, 82, 255, 0.45);
            --shadow-glow-button-hover: 0 6px 32px rgba(0, 240, 255, 0.5), 0 4px 20px rgba(0, 82, 255, 0.4);

            /* Typography */
            --font-primary: 'Segoe UI', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
            --font-display: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --text-xs: 0.75rem;
            --text-sm: 0.875rem;
            --text-base: 1rem;
            --text-lg: 1.125rem;
            --text-xl: 1.25rem;
            --text-2xl: clamp(1.4rem, 3vw, 1.875rem);
            --text-3xl: clamp(1.75rem, 4vw, 2.5rem);
            --text-4xl: clamp(2rem, 5vw, 3.25rem);
            --text-5xl: clamp(2.4rem, 6vw, 4rem);

            /* Spacing */
            --space-xs: 0.5rem;
            --space-sm: 0.875rem;
            --space-md: 1.25rem;
            --space-lg: 2rem;
            --space-xl: 3rem;
            --space-2xl: 4.5rem;
            --space-3xl: 6rem;

            /* Border Radius */
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;

            /* Transitions */
            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

            /* Z-index layers */
            --z-nav: 1000;
            --z-fab: 900;
            --z-overlay: 800;
            --z-modal: 1100;
        }

        /* ============================================
           RESET & BASE
           ============================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-primary);
            font-size: var(--text-base);
            line-height: 1.65;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image:
                radial-gradient(ellipse at 20% -10%, rgba(0, 82, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 90% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 45%),
                radial-gradient(ellipse at 50% 110%, rgba(0, 82, 255, 0.07) 0%, transparent 60%);
            background-attachment: fixed;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover,
        a:focus {
            color: var(--text-primary);
            text-decoration: none;
        }

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

        button {
            cursor: pointer;
            font-family: var(--font-primary);
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-display);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 0.5em;
        }

        h1 {
            font-size: var(--text-4xl);
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: var(--text-3xl);
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: var(--text-xl);
            letter-spacing: 0;
        }

        h4 {
            font-size: var(--text-lg);
            letter-spacing: 0;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

        /* ============================================
           CONTAINER & LAYOUT
           ============================================ */
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-narrow {
            max-width: 880px;
        }

        .container-wide {
            max-width: 1360px;
        }

        .section {
            padding: var(--space-2xl) 0;
            position: relative;
        }

        .section-tight {
            padding: var(--space-xl) 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: var(--text-xs);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-cyan);
            margin-bottom: 16px;
            padding: 6px 16px;
            background: var(--accent-cyan-soft);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-full);
        }

        .section-label i {
            font-size: 0.7rem;
        }

        .section-title {
            font-size: var(--text-3xl);
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-desc {
            font-size: var(--text-base);
            color: var(--text-muted);
            margin-bottom: var(--space-lg);
            max-width: 680px;
            line-height: 1.7;
        }

        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glass-strong), transparent);
            margin: var(--space-xl) 0;
            border: none;
        }

        /* ============================================
           HEADER & NAVIGATION
           ============================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: var(--z-nav);
            background: rgba(8, 9, 15, 0.82);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.94);
            border-bottom-color: var(--border-glass-strong);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.45);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0;
            min-height: 68px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            max-width: 340px;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow-blue);
            font-size: 1.15rem;
            color: #fff;
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .brand-name {
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .brand-sub {
            font-size: 0.65rem;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: var(--transition-base);
            white-space: nowrap;
            position: relative;
        }

        .nav-link i {
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: var(--transition-fast);
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: var(--bg-glass-strong);
        }

        .nav-link:hover i {
            color: var(--accent-cyan);
        }

        .nav-link.active {
            color: var(--text-primary);
            background: var(--accent-blue-soft);
            border: 1px solid var(--border-blue);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.15);
        }

        .nav-link.active i {
            color: var(--accent-cyan);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 8px 16px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            transition: var(--transition-fast);
            background: transparent;
            border: 1px solid transparent;
        }

        .btn-login:hover {
            color: var(--text-primary);
            background: var(--bg-glass-strong);
        }

        .btn-signup {
            padding: 9px 20px;
            font-size: 0.82rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-bright));
            border-radius: var(--radius-full);
            transition: var(--transition-base);
            box-shadow: var(--shadow-glow-button);
            border: none;
        }

        .btn-signup:hover {
            box-shadow: var(--shadow-glow-button-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        /* Mobile Nav Toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: var(--bg-glass-strong);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            gap: 5px;
            transition: var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
            background: var(--accent-cyan);
        }

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

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
            background: var(--accent-cyan);
        }

        /* Mobile Nav Drawer */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(8, 9, 15, 0.97);
            backdrop-filter: blur(20px);
            z-index: calc(var(--z-nav) - 1);
            padding: 20px;
            overflow-y: auto;
            opacity: 0;
            transform: translateY(-8px);
            pointer-events: none;
            transition: var(--transition-base);
        }

        .mobile-nav.open {
            opacity: 1;
            transform: translateY(0);
            pointer-events: all;
        }

        .mobile-nav .nav-link {
            display: flex;
            width: 100%;
            padding: 14px 18px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border-bottom: 1px solid var(--border-glass);
            margin-bottom: 4px;
        }

        .mobile-nav .nav-auth {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
            width: 100%;
        }

        .mobile-nav .btn-login,
        .mobile-nav .btn-signup {
            width: 100%;
            text-align: center;
            padding: 14px;
            font-size: 0.95rem;
        }

        /* ============================================
           ARTICLE HERO / HEADER
           ============================================ */
        .article-hero {
            padding-top: 128px;
            padding-bottom: var(--space-lg);
            background:
                radial-gradient(ellipse at 50% -30%, rgba(0, 82, 255, 0.15) 0%, transparent 55%),
                radial-gradient(ellipse at 85% 30%, rgba(0, 240, 255, 0.06) 0%, transparent 45%);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition-fast);
        }

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

        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.65rem;
        }

        .breadcrumb .current {
            color: var(--text-cyan);
            font-weight: 500;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-cyan);
            background: var(--accent-cyan-soft);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-full);
        }

        .article-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-date i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .article-read-time {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-read-time i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .article-hero-title {
            font-size: var(--text-4xl);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            color: var(--text-primary);
        }

        .article-hero-excerpt {
            font-size: var(--text-lg);
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 780px;
            margin-bottom: 24px;
        }

        .article-hero-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border-glass);
            margin-top: 20px;
            position: relative;
        }

        .article-hero-cover img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }

        .article-hero-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(8, 9, 15, 0.75) 100%);
            pointer-events: none;
        }

        /* ============================================
           ARTICLE CONTENT AREA
           ============================================ */
        .article-content {
            padding: var(--space-xl) 0 var(--space-lg);
        }

        .article-body {
            max-width: 820px;
            margin: 0 auto;
            font-size: var(--text-base);
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-body h2 {
            font-size: var(--text-2xl);
            margin-top: var(--space-lg);
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .article-body h3 {
            font-size: var(--text-xl);
            margin-top: var(--space-md);
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .article-body p {
            margin-bottom: 1.15rem;
            line-height: 1.75;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.15rem;
            padding-left: 20px;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 6px;
            color: var(--text-secondary);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: var(--space-md) 0;
            box-shadow: var(--shadow-card);
        }

        .article-body blockquote {
            margin: var(--space-md) 0;
            padding: 20px 24px;
            background: var(--bg-glass);
            border-left: 4px solid var(--accent-cyan);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-not-found {
            text-align: center;
            padding: var(--space-2xl) 0;
        }

        .article-not-found .icon-box {
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--text-muted);
            background: var(--bg-glass-strong);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
        }

        .article-not-found h2 {
            font-size: var(--text-2xl);
            margin-bottom: 8px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        /* ============================================
           METRICS / DATA DASHBOARD
           ============================================ */
        .metrics-dashboard {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            margin-top: var(--space-lg);
            position: relative;
            overflow: hidden;
        }

        .metrics-dashboard::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0.7;
        }

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

        .metric-item {
            text-align: center;
            padding: 16px 12px;
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
        }

        .metric-item:hover {
            background: var(--bg-glass-strong);
            border-color: var(--border-electric);
            box-shadow: var(--shadow-glow-cyan);
        }

        .metric-value {
            font-size: var(--text-2xl);
            font-weight: 800;
            color: var(--text-cyan);
            margin-bottom: 2px;
            letter-spacing: -0.02em;
        }

        .metric-label {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============================================
           SERVICE MATRIX / CATEGORY CARDS
           ============================================ */
        .service-matrix {
            padding: var(--space-xl) 0;
        }

        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 24px;
        }

        .matrix-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-base);
            position: relative;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

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

        .matrix-card-img {
            height: 180px;
            overflow: hidden;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
            position: relative;
        }

        .matrix-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-slow);
        }

        .matrix-card:hover .matrix-card-img img {
            transform: scale(1.06);
        }

        .matrix-card-img .overlay-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-glow-blue);
        }

        .matrix-card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .matrix-card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .matrix-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
        }

        .matrix-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: var(--transition-fast);
        }

        .matrix-card-link:hover {
            color: var(--text-primary);
        }

        .matrix-card-link i {
            font-size: 0.7rem;
            transition: var(--transition-fast);
        }

        .matrix-card-link:hover i {
            transform: translateX(3px);
        }

        /* ============================================
           FAQ ACCORDION
           ============================================ */
        .faq-section {
            padding: var(--space-xl) 0;
        }

        .faq-list {
            max-width: 820px;
            margin: 24px auto 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-base);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .faq-item:hover {
            border-color: var(--border-electric);
        }

        .faq-item.open {
            border-color: var(--border-electric-strong);
            box-shadow: var(--shadow-glow-cyan);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition-fast);
            text-align: left;
            width: 100%;
        }

        .faq-question:hover {
            background: var(--bg-glass-strong);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-glass-strong);
            border: 1px solid var(--border-glass);
            color: var(--text-muted);
            font-size: 0.8rem;
            transition: var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--accent-cyan-soft);
            border-color: var(--border-electric);
            color: var(--accent-cyan);
            transform: rotate(180deg);
        }

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

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

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

        /* ============================================
           CTA SECTION
           ============================================ */
        .cta-section {
            padding: var(--space-xl) 0 var(--space-2xl);
            text-align: center;
        }

        .cta-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 320px;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-blue), transparent);
            border-radius: var(--radius-full);
        }

        .cta-panel h2 {
            font-size: var(--text-2xl);
            margin-bottom: 10px;
        }

        .cta-panel p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 22px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 0.92rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-bright));
            border-radius: var(--radius-full);
            transition: var(--transition-base);
            box-shadow: var(--shadow-glow-button);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-button-hover);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary i {
            font-size: 0.85rem;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 26px;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: var(--bg-glass-strong);
            border: 1px solid var(--border-glass-strong);
            border-radius: var(--radius-full);
            transition: var(--transition-base);
        }

        .btn-secondary:hover {
            color: var(--text-primary);
            border-color: var(--border-electric);
            box-shadow: var(--shadow-glow-cyan);
            background: var(--bg-glass-strong);
        }

        /* ============================================
           FLOATING ACTION BUTTON (FAB)
           ============================================ */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: var(--z-fab);
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 18px;
            background: rgba(8, 9, 15, 0.68);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 2px solid transparent;
            border-radius: var(--radius-full);
            background-clip: padding-box;
            cursor: pointer;
            transition: var(--transition-base);
            min-height: 48px;
            min-width: 48px;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
            opacity: 0.7;
            outline: none;
        }

        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: var(--radius-full);
            background: linear-gradient(120deg, #00F0FF, #0052FF, #FF007F, #00F0FF);
            background-size: 300% 300%;
            z-index: -1;
            animation: gradientFlow 4s ease infinite;
            opacity: 0.85;
        }

        @keyframes gradientFlow {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        .fab-support .fab-icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--accent-cyan);
            transition: var(--transition-base);
            animation: neonPulse 2.4s ease-in-out infinite;
        }

        @keyframes neonPulse {
            0%, 100% { opacity: 0.85; filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.5)); }
            50% { opacity: 1; filter: drop-shadow(0 0 14px rgba(0, 240, 255, 0.9)); }
        }

        .fab-support .fab-label {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: var(--transition-base);
        }

        .fab-support .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            animation: badgeBlink 1.6s ease-in-out infinite;
            border: 2px solid var(--bg-primary);
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.6);
        }

        @keyframes badgeBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        .fab-support:hover {
            opacity: 1;
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
        }

        .fab-support:hover .fab-icon {
            transform: rotate(360deg);
            transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .fab-support:active {
            transform: translateY(0) scale(0.96);
        }

        .fab-support:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            opacity: 1;
        }

        /* ============================================
           FOOTER
           ============================================ */
        .site-footer {
            background: var(--bg-tertiary);
            border-top: 1px solid var(--border-glass);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: var(--space-lg);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: var(--space-lg);
        }

        .footer-brand h3 {
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }

        .footer-links {
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-glass);
            padding-top: var(--space-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .footer-bottom .domain-info {
            font-size: 0.72rem;
            color: var(--text-muted);
            opacity: 0.7;
        }

        /* ============================================
           RESPONSIVE DESIGN
           ============================================ */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 0;
                min-height: 58px;
            }

            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-nav {
                display: block;
            }

            .btn-login,
            .btn-signup {
                display: flex;
            }

            .article-hero {
                padding-top: 96px;
            }

            .article-hero-title {
                font-size: var(--text-3xl);
            }

            .article-hero-excerpt {
                font-size: var(--text-base);
            }

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

            .metric-value {
                font-size: var(--text-xl);
            }

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

            .matrix-card-img {
                height: 160px;
            }

            .faq-question {
                padding: 15px 16px;
                font-size: 0.88rem;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }

            .cta-panel {
                padding: var(--space-lg) var(--space-md);
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }

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

            .fab-support {
                left: 12px;
                bottom: 80px;
                padding: 12px 14px;
            }

            .fab-support .fab-label {
                display: none;
            }

            .section {
                padding: var(--space-xl) 0;
            }

            .section-tight {
                padding: var(--space-lg) 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .brand-name {
                font-size: 0.75rem;
            }

            .brand-sub {
                font-size: 0.6rem;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            .article-hero {
                padding-top: 82px;
            }

            .article-hero-title {
                font-size: 1.5rem;
                line-height: 1.3;
            }

            .article-hero-excerpt {
                font-size: 0.88rem;
            }

            .breadcrumb {
                font-size: 0.72rem;
                gap: 4px;
            }

            .article-meta {
                gap: 8px;
            }

            .article-category-tag {
                font-size: 0.68rem;
                padding: 4px 10px;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .metric-item {
                padding: 12px 8px;
            }

            .metric-value {
                font-size: 1.1rem;
            }

            .metric-label {
                font-size: 0.7rem;
            }

            .matrix-card-img {
                height: 140px;
            }

            .faq-question {
                padding: 13px 14px;
                font-size: 0.82rem;
                gap: 8px;
            }

            .faq-question .faq-icon {
                width: 24px;
                height: 24px;
                font-size: 0.65rem;
            }

            .cta-panel h2 {
                font-size: 1.2rem;
            }

            .cta-panel p {
                font-size: 0.85rem;
            }

            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 0.85rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .section-desc {
                font-size: 0.88rem;
            }
        }

/* roulang page: category3 */
/* ========== DESIGN TOKENS ========== */
        :root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --bg-glass: rgba(255, 255, 255, 0.04);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-cyan-glow: rgba(0, 240, 255, 0.35);
            --accent-blue-glow: rgba(0, 82, 255, 0.4);
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #8B9BB4;
            --border-dark: rgba(0, 240, 255, 0.12);
            --border-glow: rgba(0, 240, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow-blue: 0 0 20px rgba(0, 82, 255, 0.3);
            --shadow-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-glow-btn: 0 0 30px rgba(0, 240, 255, 0.35), 0 0 60px rgba(0, 82, 255, 0.2);
            --font-primary: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
            --container-max: 1240px;
        }
        
        /* ========== RESET & BASE ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }
        
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: var(--text-white);
        }
        
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        ul, ol {
            list-style: none;
        }
        
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-white);
        }
        
        h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            letter-spacing: -0.02em;
        }
        
        h2 {
            font-size: clamp(1.4rem, 3vw, 2.1rem);
            letter-spacing: -0.01em;
        }
        
        h3 {
            font-size: clamp(1.1rem, 2vw, 1.45rem);
        }
        
        h4 {
            font-size: 1.05rem;
            font-weight: 600;
        }
        
        p {
            margin-bottom: 1rem;
            color: var(--text-silver);
        }
        
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }
        
        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-dark);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        
        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.55);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding-top: 0.8rem;
            padding-bottom: 0.8rem;
            flex-wrap: nowrap;
        }
        
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
            max-width: 240px;
        }
        
        .nav-brand a {
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.95rem;
            line-height: 1.35;
            letter-spacing: 0.02em;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .nav-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex-shrink: 1;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        
        .nav-link {
            color: var(--text-silver);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.5rem 0.9rem;
            border-radius: 20px;
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
            letter-spacing: 0.01em;
        }
        
        .nav-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        
        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.2);
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        
        .btn-outline-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.45rem 1.1rem;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .btn-outline-sm:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        
        .btn-solid-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.45rem 1.2rem;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066ff);
            border: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 12px rgba(0, 82, 255, 0.35);
        }
        
        .btn-solid-sm:hover {
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }
        
        .nav-hamburger {
            display: none;
            width: 42px;
            height: 42px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: 10px;
            color: var(--text-white);
            font-size: 1.3rem;
            transition: all var(--transition-fast);
            z-index: 1002;
        }
        
        .nav-hamburger:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }
        
        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(8, 9, 15, 0.98);
            backdrop-filter: blur(24px);
            padding: 1.5rem 1rem;
            z-index: 999;
            overflow-y: auto;
            flex-direction: column;
            gap: 0.5rem;
        }
        
        .mobile-menu.open {
            display: flex;
        }
        
        .mobile-menu .nav-link {
            display: block;
            font-size: 1.1rem;
            padding: 1rem 1.2rem;
            border-radius: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        
        .mobile-menu .nav-link.active {
            background: rgba(0, 240, 255, 0.08);
        }
        
        /* ========== MAIN CONTENT ========== */
        .site-main {
            flex: 1;
            padding-top: 70px;
        }
        
        /* ========== HERO SECTION ========== */
        .hero-section {
            position: relative;
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.88) 0%, rgba(8, 9, 15, 0.65) 40%, rgba(13, 17, 30, 0.82) 100%);
            z-index: 1;
        }
        
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 40%, rgba(0, 82, 255, 0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 30% 70%, rgba(0, 240, 255, 0.08) 0%, transparent 50%);
            z-index: 1;
            pointer-events: none;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        
        .hero-text {
            text-align: left;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 1.2rem;
            letter-spacing: 0.03em;
        }
        
        .hero-badge i {
            font-size: 0.7rem;
        }
        
        .hero-text h1 {
            margin-bottom: 1.2rem;
            font-size: clamp(1.9rem, 4.5vw, 3rem);
            line-height: 1.2;
            color: var(--text-white);
        }
        
        .hero-text h1 .highlight {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-text .hero-pain-point {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: 0.8rem;
            font-weight: 500;
            display: block;
        }
        
        .hero-text .hero-sub {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 1.8rem;
            line-height: 1.7;
            max-width: 480px;
        }
        
        .hero-cta-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 1.8rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066ff);
            border: none;
            box-shadow: var(--shadow-glow-btn);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
        }
        
        .btn-primary-glow:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.5), 0 0 80px rgba(0, 82, 255, 0.25);
            transform: translateY(-2px);
            color: #fff;
        }
        
        .btn-primary-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }
        
        .btn-ghost-glow {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 1.6rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-silver);
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            transition: all var(--transition-base);
        }
        
        .btn-ghost-glow:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
        }
        
        /* Hero Demo Panel */
        .hero-demo {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            text-align: left;
        }
        
        .hero-demo .demo-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .hero-demo .demo-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }
        
        .demo-code-box {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            background: rgba(0, 0, 0, 0.5);
            border: 1.5px dashed rgba(0, 240, 255, 0.4);
            border-radius: var(--radius-md);
            padding: 0.9rem 1.1rem;
            margin-bottom: 1rem;
        }
        
        .demo-code-box .code-text {
            font-family: 'Courier New', monospace;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.08em;
            flex: 1;
        }
        
        .btn-copy {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .btn-copy:hover {
            background: rgba(0, 240, 255, 0.2);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
        }
        
        .demo-code-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        .demo-code-meta span i {
            color: var(--accent-cyan);
            margin-right: 0.3rem;
        }
        
        .demo-success {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1rem;
            background: rgba(0, 255, 136, 0.1);
            border: 1px solid rgba(0, 255, 136, 0.3);
            border-radius: var(--radius-sm);
            font-size: 0.82rem;
            color: #7ee8a8;
            margin-top: 0.8rem;
        }
        
        .demo-success i {
            font-size: 0.9rem;
        }
        
        /* ========== STATS DASHBOARD ========== */
        .stats-section {
            padding: var(--spacing-xl) 0;
            background: var(--bg-secondary);
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        
        .stat-card {
            padding: var(--spacing-md);
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
            text-align: left;
        }
        
        .stat-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.1);
            transform: translateY(-3px);
        }
        
        .stat-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 12px;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            margin-bottom: 0.8rem;
        }
        
        .stat-number {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.02em;
            margin-bottom: 0.2rem;
        }
        
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        
        /* ========== SERVICES MATRIX ========== */
        .services-section {
            padding: var(--spacing-2xl) 0;
            background: var(--bg-primary);
        }
        
        .section-header {
            margin-bottom: var(--spacing-lg);
            text-align: left;
        }
        
        .section-header h2 {
            margin-bottom: 0.6rem;
        }
        
        .section-header p {
            color: var(--text-muted);
            max-width: 560px;
            font-size: 0.95rem;
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }
        
        .service-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            background: var(--bg-glass);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
            align-items: flex-start;
            text-align: left;
        }
        
        .service-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            transform: translateY(-2px);
        }
        
        .service-img {
            width: 88px;
            height: 88px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            object-fit: cover;
        }
        
        .service-content {
            flex: 1;
            text-align: left;
        }
        
        .service-content h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
            color: var(--text-white);
        }
        
        .service-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.7rem;
            line-height: 1.6;
        }
        
        .service-tag {
            display: inline-block;
            padding: 0.3rem 0.7rem;
            border-radius: 16px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.25);
        }
        
        .service-tag.hot {
            background: rgba(255, 68, 0, 0.15);
            color: #ff6b4a;
            border-color: rgba(255, 68, 0, 0.35);
        }
        
        /* ========== COMPARISON SECTION ========== */
        .comparison-section {
            padding: var(--spacing-2xl) 0;
            background: var(--bg-secondary);
        }
        
        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-md);
        }
        
        .comparison-card {
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            background: var(--bg-glass);
            border: 1px solid var(--border-dark);
            text-align: left;
        }
        
        .comparison-card.featured {
            border-color: var(--border-glow);
            background: rgba(0, 240, 255, 0.05);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.08);
        }
        
        .comparison-card .comp-badge {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        
        .comparison-card.featured .comp-badge {
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
        }
        
        .comparison-card h3 {
            margin-bottom: 1rem;
        }
        
        .comparison-list {
            list-style: none;
        }
        
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.9rem;
            color: var(--text-silver);
        }
        
        .comparison-list li:last-child {
            border-bottom: none;
        }
        
        .comparison-list li i {
            color: var(--text-muted);
            margin-top: 0.2rem;
            font-size: 0.8rem;
        }
        
        .comparison-card.featured .comparison-list li i {
            color: var(--accent-cyan);
        }
        
        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: var(--spacing-2xl) 0;
            background: var(--bg-primary);
        }
        
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            text-align: left;
        }
        
        .faq-item {
            border-bottom: 1px solid var(--border-dark);
            padding: var(--spacing-sm) 0;
        }
        
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 0.6rem 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-white);
            text-align: left;
            transition: color var(--transition-fast);
        }
        
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        
        .faq-question .faq-icon {
            font-size: 0.9rem;
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        
        .faq-item.open .faq-answer {
            max-height: 600px;
            padding: 0.4rem 0 1rem;
        }
        
        /* ========== CTA / CONVERSION FORM ========== */
        .cta-section {
            padding: var(--spacing-2xl) 0;
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        
        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        
        .cta-info {
            text-align: left;
        }
        
        .cta-info h2 {
            margin-bottom: 0.8rem;
        }
        
        .cta-info p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.2rem;
        }
        
        .cta-points {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        
        .cta-point {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 1rem;
            background: rgba(0, 240, 255, 0.08);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-silver);
            border: 1px solid rgba(0, 240, 255, 0.15);
        }
        
        .cta-point i {
            color: var(--accent-cyan);
        }
        
        .cta-form {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            text-align: left;
        }
        
        .cta-form h3 {
            margin-bottom: 0.5rem;
            font-size: 1.2rem;
        }
        
        .cta-form .form-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }
        
        .form-group {
            margin-bottom: 0.9rem;
        }
        
        .form-group label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 0.3rem;
        }
        
        .form-group input {
            width: 100%;
            padding: 0.75rem 1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1.5px solid var(--border-dark);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 0.9rem;
            font-family: inherit;
            transition: all var(--transition-fast);
        }
        
        .form-group input::placeholder {
            color: rgba(139, 155, 180, 0.6);
        }
        
        .form-group input:focus {
            border-color: var(--accent-cyan);
            outline: none;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
            background: rgba(255, 255, 255, 0.06);
        }
        
        .btn-submit-glow {
            width: 100%;
            padding: 0.85rem 1.5rem;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), #0066ff);
            border: none;
            box-shadow: var(--shadow-glow-btn);
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            margin-top: 0.3rem;
        }
        
        .btn-submit-glow:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.5), 0 0 80px rgba(0, 82, 255, 0.25);
            transform: translateY(-2px);
        }
        
        .form-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.7rem;
            text-align: center;
        }
        
        /* ========== FAB (Floating Action Button) ========== */
        .fab-promo {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(8, 9, 15, 0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-radius: 50%;
            background-image: linear-gradient(rgba(8, 9, 15, 0.65), rgba(8, 9, 15, 0.65)), 
                              linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            background-origin: padding-box, border-box;
            background-clip: padding-box, border-box;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4), 0 4px 25px rgba(0, 0, 0, 0.4);
            opacity: 0.6;
            transition: all var(--transition-base);
            cursor: pointer;
            animation: fab-border-flow 3s ease-in-out infinite;
        }
        
        .fab-promo:hover {
            opacity: 1;
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.65), 0 0 60px rgba(0, 82, 255, 0.3);
            transform: scale(1.1);
        }
        
        .fab-promo:active {
            transform: scale(0.95);
            opacity: 1;
        }
        
        .fab-promo .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #ff3366;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: fab-blink 1.5s ease-in-out infinite;
        }
        
        @keyframes fab-border-flow {
            0%, 100% {
                box-shadow: 0 0 20px rgba(0, 240, 255, 0.4), 0 4px 25px rgba(0, 0, 0, 0.4);
            }
            50% {
                box-shadow: 0 0 30px rgba(0, 240, 255, 0.7), 0 0 50px rgba(0, 82, 255, 0.3);
            }
        }
        
        @keyframes fab-blink {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        
        /* ========== FOOTER ========== */
        .site-footer {
            background: #08090F;
            border-top: 1px solid var(--border-dark);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        
        .footer-brand h3 {
            font-size: 1.1rem;
            margin-bottom: 0.7rem;
            color: var(--text-white);
        }
        
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
        }
        
        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        
        .footer-bottom .domain-info {
            color: rgba(139, 155, 180, 0.55);
        }
        
        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-content {
                gap: var(--spacing-lg);
            }
            
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            
            .services-grid {
                gap: var(--spacing-md);
            }
        }
        
        @media (max-width: 768px) {
            .header-inner {
                padding-top: 0.6rem;
                padding-bottom: 0.6rem;
            }
            
            .nav-links {
                display: none;
            }
            
            .nav-hamburger {
                display: flex;
            }
            
            .nav-actions .btn-outline-sm,
            .nav-actions .btn-solid-sm {
                padding: 0.4rem 0.9rem;
                font-size: 0.78rem;
            }
            
            .hero-section {
                min-height: auto;
                padding: var(--spacing-lg) 0;
            }
            
            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            
            .hero-text {
                text-align: center;
            }
            
            .hero-text .hero-sub {
                max-width: 100%;
            }
            
            .hero-cta-row {
                justify-content: center;
            }
            
            .hero-demo {
                padding: var(--spacing-md);
            }
            
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .stat-number {
                font-size: 1.3rem;
            }
            
            .services-grid {
                grid-template-columns: 1fr;
            }
            
            .service-item {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .service-img {
                width: 100%;
                height: 160px;
                object-fit: cover;
            }
            
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            
            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            
            .cta-info {
                text-align: center;
            }
            
            .cta-points {
                justify-content: center;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
                text-align: left;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            
            .fab-promo {
                left: 12px;
                bottom: 70px;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 520px) {
            .nav-brand {
                max-width: 180px;
            }
            
            .nav-brand a {
                font-size: 0.75rem;
            }
            
            .nav-brand .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 0.85rem;
                border-radius: 8px;
            }
            
            .nav-actions {
                gap: 0.4rem;
            }
            
            .nav-actions .btn-outline-sm,
            .nav-actions .btn-solid-sm {
                padding: 0.35rem 0.7rem;
                font-size: 0.7rem;
            }
            
            .hero-badge {
                font-size: 0.7rem;
                padding: 0.3rem 0.7rem;
            }
            
            .hero-text h1 {
                font-size: 1.6rem;
            }
            
            .btn-primary-glow,
            .btn-ghost-glow {
                padding: 0.7rem 1.2rem;
                font-size: 0.85rem;
            }
            
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }
            
            .stat-card {
                padding: 0.8rem;
            }
            
            .stat-number {
                font-size: 1.1rem;
            }
            
            .stat-label {
                font-size: 0.72rem;
            }
            
            .stat-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
                border-radius: 8px;
            }
            
            .demo-code-box {
                flex-direction: column;
                align-items: stretch;
                gap: 0.5rem;
            }
            
            .demo-code-box .code-text {
                font-size: 1rem;
                text-align: center;
            }
            
            .btn-copy {
                justify-content: center;
            }
            
            .comparison-card {
                padding: var(--spacing-md);
            }
            
            .cta-form {
                padding: var(--spacing-md);
            }
        }

/* roulang page: category2 */
/* ============================================
           DESIGN VARIABLES - Cyber-Tron & Electric Blue
           ============================================ */
        :root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --tertiary-bg: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-blue-dark: #0039B3;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #7C8BA6;
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-neon: rgba(0, 82, 255, 0.45);
            --border-cyan-glow: rgba(0, 240, 255, 0.6);
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-bg-hover: rgba(255, 255, 255, 0.07);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50px;
            --shadow-neon-blue: 0 0 20px rgba(0, 82, 255, 0.45), 0 0 50px rgba(0, 82, 255, 0.2);
            --shadow-neon-cyan: 0 0 20px rgba(0, 240, 255, 0.45), 0 0 50px rgba(0, 240, 255, 0.2);
            --shadow-neon-dual: 0 0 25px rgba(0, 82, 255, 0.5), 0 0 55px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-card-hover: 0 12px 48px rgba(0, 82, 255, 0.25), 0 4px 16px rgba(0, 0, 0, 0.5);
            --transition-fast: 0.2s ease;
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-display: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
            --header-height: 72px;
            --header-height-mobile: 60px;
        }

        /* ============================================
           BASE RESET & GLOBAL
           ============================================ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-primary);
            background-color: var(--primary-bg);
            color: var(--text-silver);
            line-height: 1.65;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover,
        a:focus {
            color: var(--text-white);
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-display);
            color: var(--text-white);
            margin: 0 0 0.75em;
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        h1 {
            font-size: clamp(2rem, 5vw, 3.25rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
        }

        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.25rem);
            font-weight: 700;
            line-height: 1.25;
        }

        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
            font-weight: 650;
        }

        p {
            margin: 0 0 1em;
            color: var(--text-silver);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .text-center { text-align: center; }
        .text-left { text-align: left; }
        .text-right { text-align: right; }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }

        /* ============================================
           HEADER / NAVIGATION
           ============================================ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-glass);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 9, 15, 0.96);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-white);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: var(--shadow-neon-dual);
        }
        .logo-text {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            letter-spacing: -0.01em;
            max-width: 180px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .logo-text strong {
            color: var(--accent-cyan);
            font-weight: 800;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a.nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            text-decoration: none;
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a.nav-link:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.nav-link.active {
            color: var(--text-white);
            background: rgba(0, 82, 255, 0.2);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.25);
        }
        .nav-links a.nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn-header-login {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            text-decoration: none;
            border-radius: var(--radius-full);
            border: 1px solid var(--border-glass);
            transition: all var(--transition-fast);
            background: transparent;
        }
        .btn-header-login:hover {
            color: var(--text-white);
            border-color: rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-header-signup {
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-full);
            border: none;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-neon-dual);
            text-decoration: none;
        }
        .btn-header-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 35px rgba(0, 82, 255, 0.7), 0 0 65px rgba(0, 240, 255, 0.35);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 100;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* ============================================
           MOBILE NAV OVERLAY
           ============================================ */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(8, 9, 15, 0.97);
            z-index: 85;
            padding: 80px 24px 40px;
            overflow-y: auto;
        }
        .mobile-nav-overlay.open {
            display: block;
        }
        .mobile-nav-overlay .mobile-nav-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mobile-nav-overlay .mobile-nav-links a {
            display: block;
            padding: 16px 0;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-white);
            text-decoration: none;
            border-bottom: 1px solid var(--border-glass);
            transition: color var(--transition-fast);
        }
        .mobile-nav-overlay .mobile-nav-links a:hover,
        .mobile-nav-overlay .mobile-nav-links a.active {
            color: var(--accent-cyan);
        }
        .mobile-nav-overlay .mobile-nav-links a.active {
            padding-left: 12px;
            border-left: 3px solid var(--accent-cyan);
        }
        .mobile-nav-overlay .mobile-auth-buttons {
            display: flex;
            gap: 12px;
            margin-top: 24px;
        }
        .mobile-nav-overlay .mobile-auth-buttons .btn-header-login,
        .mobile-nav-overlay .mobile-auth-buttons .btn-header-signup {
            flex: 1;
            text-align: center;
            padding: 12px 18px;
            font-size: 0.95rem;
        }

        /* ============================================
           HERO SECTION - Full Width Immersive KV
           ============================================ */
        .hero-kv {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            padding: calc(var(--header-height) + 40px) 0 60px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero-kv::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(8,9,15,0.88) 0%, rgba(13,17,30,0.75) 40%, rgba(8,9,15,0.9) 100%);
            z-index: 1;
        }
        .hero-kv::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 200px;
            background: linear-gradient(to top, var(--primary-bg), transparent);
            z-index: 2;
            pointer-events: none;
        }
        .hero-kv .hero-content {
            position: relative;
            z-index: 5;
            width: 100%;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(0, 82, 255, 0.18);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .hero-badge i {
            font-size: 0.75rem;
            animation: pulse-dot 2s infinite;
        }
        .hero-kv h1 {
            max-width: 700px;
            margin-bottom: 18px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .hero-kv .hero-subtitle {
            max-width: 560px;
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-silver);
            margin-bottom: 30px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 30px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 30px;
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border-radius: var(--radius-full);
            border: none;
            box-shadow: var(--shadow-neon-dual);
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.01em;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.75), 0 0 80px rgba(0, 240, 255, 0.45);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0) scale(0.97);
            box-shadow: 0 0 15px rgba(0, 82, 255, 0.5);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 30px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-full);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-base);
            text-decoration: none;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        .hero-countdown-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 16px 22px;
            background: rgba(13, 17, 30, 0.7);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            max-width: 600px;
        }
        .countdown-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            white-space: nowrap;
        }
        .countdown-timer {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .countdown-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            min-width: 48px;
        }
        .countdown-value {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }
        .countdown-unit {
            font-size: 0.65rem;
            font-weight: 500;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .countdown-separator {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-muted);
            padding-bottom: 14px;
        }

        /* ============================================
           SECTION COMMON STYLES
           ============================================ */
        .section {
            padding: var(--section-padding);
            position: relative;
        }
        .section-alt {
            background: var(--secondary-bg);
        }
        .section-heading {
            max-width: 650px;
            margin-bottom: 40px;
        }
        .section-heading h2 {
            margin-bottom: 12px;
        }
        .section-heading p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-heading .section-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 10px;
        }

        /* Glass Card Base */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .glass-card:hover {
            border-color: var(--border-neon);
            background: var(--glass-bg-hover);
            box-shadow: var(--shadow-card-hover);
        }

        /* ============================================
           METRICS DASHBOARD SECTION
           ============================================ */
        .metrics-section {
            padding: 56px 0;
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            padding: 22px 20px;
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            text-align: center;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }
        .metric-card:hover {
            border-color: var(--border-neon);
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.2);
        }
        .metric-icon {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }
        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .metric-value .metric-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-cyan);
        }
        .metric-label {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ============================================
           REGISTRATION STEPS - Service Matrix
           ============================================ */
        .steps-section {
            padding: var(--section-padding);
            background: var(--primary-bg);
        }
        .steps-layout {
            display: grid;
            grid-template-columns: 320px 1fr;
            gap: 40px;
            align-items: start;
        }
        .steps-intro {
            position: sticky;
            top: calc(var(--header-height) + 30px);
        }
        .steps-intro .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            margin-bottom: 20px;
        }
        .steps-intro .intro-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .steps-intro .intro-image:hover img {
            transform: scale(1.05);
        }
        .steps-intro .intro-note {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            padding: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
        }
        .steps-intro .intro-note i {
            color: var(--accent-cyan);
            margin-right: 6px;
        }

        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border-glass);
            position: relative;
            transition: all var(--transition-base);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-item:hover {
            padding-left: 8px;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #fff;
            box-shadow: var(--shadow-neon-dual);
            flex-shrink: 0;
        }
        .step-content h3 {
            margin-bottom: 6px;
            font-size: 1.1rem;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .step-content .step-tip {
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 500;
        }
        .step-content .step-tip i {
            margin-right: 4px;
        }

        /* ============================================
           COMPARISON SECTION - Results
           ============================================ */
        .comparison-section {
            padding: var(--section-padding);
            background: var(--secondary-bg);
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .comparison-card {
            padding: 28px;
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
        }
        .comparison-card.before {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .comparison-card.after {
            background: rgba(0, 82, 255, 0.1);
            border: 1px solid var(--border-neon);
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.15);
        }
        .comparison-card .comparison-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }
        .comparison-card .comparison-header h3 {
            margin: 0;
            font-size: 1.1rem;
        }
        .comparison-card.before .comparison-header h3 { color: var(--text-muted); }
        .comparison-card.after .comparison-header h3 { color: var(--accent-cyan); }
        .comparison-card .comparison-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .comparison-card.before .comparison-icon {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-muted);
        }
        .comparison-card.after .comparison-icon {
            background: rgba(0, 82, 255, 0.3);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.35);
        }
        .comparison-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            font-size: 0.9rem;
            color: var(--text-silver);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .comparison-list li:last-child {
            border-bottom: none;
        }
        .comparison-list li i {
            flex-shrink: 0;
            width: 18px;
            text-align: center;
            margin-top: 2px;
        }
        .comparison-card.before .comparison-list li i {
            color: var(--text-muted);
        }
        .comparison-card.after .comparison-list li i {
            color: var(--accent-cyan);
        }
        .comparison-card.after .comparison-list li i.fa-check-circle {
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
        }

        /* ============================================
           FAQ SECTION
           ============================================ */
        .faq-section {
            padding: var(--section-padding);
            background: var(--primary-bg);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-neon);
        }
        .faq-item.active {
            border-color: var(--border-cyan-glow);
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.2);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            text-align: left;
            cursor: pointer;
            background: transparent;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question .faq-toggle-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: transform var(--transition-base);
        }
        .faq-item.active .faq-toggle-icon {
            transform: rotate(180deg);
            color: var(--accent-cyan);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ============================================
           CTA / CONVERSION FORM SECTION
           ============================================ */
        .cta-section {
            padding: var(--section-padding);
            background: var(--secondary-bg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 82, 255, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .cta-info h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            margin-bottom: 14px;
        }
        .cta-info p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .cta-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cta-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-silver);
        }
        .cta-benefits li i {
            color: var(--accent-cyan);
            text-shadow: 0 0 6px rgba(0, 240, 255, 0.4);
        }

        .cta-form-card {
            padding: 32px;
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }
        .cta-form-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card-hover);
        }
        .cta-form-card h3 {
            font-size: 1.15rem;
            margin-bottom: 20px;
            color: var(--text-white);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 13px 16px;
            font-size: 0.9rem;
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-sm);
            outline: none;
            transition: all var(--transition-fast);
        }
        .form-group input::placeholder {
            color: var(--text-muted);
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
            background: rgba(255, 255, 255, 0.07);
        }
        .form-group select option {
            background: var(--secondary-bg);
            color: var(--text-white);
        }
        .form-submit-btn {
            width: 100%;
            padding: 15px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-neon-dual);
            transition: all var(--transition-base);
            letter-spacing: 0.01em;
        }
        .form-submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(0, 82, 255, 0.75), 0 0 80px rgba(0, 240, 255, 0.45);
        }
        .form-submit-btn:active {
            transform: translateY(0) scale(0.98);
        }
        .form-success-msg {
            display: none;
            padding: 16px 20px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-sm);
            color: var(--accent-cyan);
            font-size: 0.9rem;
            font-weight: 500;
            margin-top: 16px;
            text-align: center;
        }
        .form-success-msg.show {
            display: block;
        }
        .form-note {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 12px;
            text-align: center;
            line-height: 1.5;
        }

        /* ============================================
           FOOTER
           ============================================ */
        .site-footer {
            background: #06070C;
            border-top: 1px solid var(--border-glass);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 1.05rem;
            margin-bottom: 10px;
            color: var(--text-white);
        }
        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-links a i {
            font-size: 0.6rem;
        }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid var(--border-glass);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin: 0 0 6px;
        }
        .footer-bottom .domain-info {
            font-size: 0.72rem;
            color: #5A6B82;
        }

        /* ============================================
           FAB - Floating Action Button (Cyber & Neon)
           ============================================ */
        .fab-cyber {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            cursor: pointer;
            opacity: 0.6;
            transition: all var(--transition-base);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 0 0 40px rgba(0, 82, 255, 0.25);
            position: relative;
        }
        .fab-cyber::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            border-radius: 50%;
            border: 2px solid transparent;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-cyan)) border-box;
            -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            animation: fab-border-flow 3s linear infinite;
        }
        .fab-cyber:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.75), 0 0 70px rgba(0, 82, 255, 0.5);
            transform: scale(1.1);
        }
        .fab-cyber:active {
            transform: scale(0.95);
        }
        .fab-cyber .fab-icon {
            font-size: 1.4rem;
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.7);
            animation: fab-pulse 2s ease-in-out infinite;
        }
        .fab-cyber .fab-notification {
            position: absolute;
            top: -3px;
            right: -3px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.7);
            animation: fab-blink 1.2s ease-in-out infinite;
        }

        @keyframes fab-border-flow {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        @keyframes fab-pulse {
            0%, 100% { opacity: 0.85; }
            50% { opacity: 0.4; }
        }
        @keyframes fab-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.3); }
        }

        /* ============================================
           RESPONSIVE BREAKPOINTS
           ============================================ */
        @media screen and (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .steps-layout {
                grid-template-columns: 260px 1fr;
                gap: 28px;
            }
            .steps-intro .intro-image img {
                height: 180px;
            }
            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --header-height: 60px;
                --section-padding: 48px 0;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .logo-text {
                max-width: 140px;
                font-size: 0.8rem;
            }
            .hero-kv {
                min-height: 75vh;
                padding-top: calc(var(--header-height) + 30px);
                padding-bottom: 40px;
            }
            .hero-kv h1 {
                font-size: clamp(1.6rem, 5vw, 2.2rem);
            }
            .hero-kv .hero-subtitle {
                font-size: 0.92rem;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                padding: 13px 22px;
                font-size: 0.9rem;
                justify-content: center;
            }
            .hero-countdown-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: 14px 16px;
            }
            .countdown-timer {
                width: 100%;
                justify-content: space-between;
                gap: 4px;
            }
            .countdown-item {
                min-width: 40px;
            }
            .countdown-value {
                font-size: 1.15rem;
            }
            .countdown-separator {
                font-size: 1rem;
                padding-bottom: 10px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-card {
                padding: 16px 14px;
            }
            .metric-value {
                font-size: 1.5rem;
            }
            .steps-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .steps-intro {
                position: relative;
                top: 0;
            }
            .step-item {
                gap: 14px;
                padding: 18px 0;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 0.95rem;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 15px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .cta-form-card {
                padding: 22px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: left;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .fab-cyber {
                width: 48px;
                height: 48px;
                bottom: 5rem;
                left: 0.75rem;
            }
            .fab-cyber .fab-icon {
                font-size: 1.15rem;
            }
            .fab-cyber .fab-notification {
                width: 10px;
                height: 10px;
            }
            .mobile-nav-overlay .mobile-auth-buttons {
                flex-direction: column;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.85rem;
            }
            .logo-text {
                max-width: 110px;
                font-size: 0.72rem;
            }
            .btn-header-login {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .btn-header-signup {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .hero-kv {
                min-height: 70vh;
            }
            .hero-badge {
                font-size: 0.72rem;
                padding: 6px 14px;
            }
            .hero-kv h1 {
                font-size: 1.5rem;
            }
            .hero-kv .hero-subtitle {
                font-size: 0.85rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 12px 10px;
            }
            .metric-value {
                font-size: 1.25rem;
            }
            .metric-icon {
                font-size: 1.2rem;
                margin-bottom: 6px;
            }
            .metric-label {
                font-size: 0.7rem;
            }
            .step-content h3 {
                font-size: 0.98rem;
            }
            .step-content p {
                font-size: 0.82rem;
            }
            .comparison-card {
                padding: 18px 16px;
            }
            .section-heading h2 {
                font-size: 1.3rem;
            }
            .cta-form-card {
                padding: 18px 14px;
                border-radius: var(--radius-md);
            }
            .form-group input,
            .form-group select {
                padding: 11px 13px;
                font-size: 0.85rem;
            }
            .form-submit-btn {
                padding: 13px 18px;
                font-size: 0.92rem;
            }
        }