/* roulang page: index */
:root {
            --bg-primary: #062315;
            --bg-secondary: #0B3C25;
            --bg-card: #0e4a2e;
            --bg-card-hover: #115633;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --accent-amber: #FF9F00;
            --accent-deep: #FF8C00;
            --text-primary: #FFFDF0;
            --text-secondary: #C5E2D2;
            --text-muted: #8FB8A5;
            --border-color: rgba(255, 204, 0, 0.25);
            --border-light: rgba(197, 226, 210, 0.15);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.45);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.3);
            --shadow-glow: 0 0 30px rgba(255, 204, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 72px;
            --spacing-3xl: 96px;
            --font-family: 'Be Vietnam Pro', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --nav-height: 72px;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(50, 205, 50, 0.05) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 30%, rgba(255, 204, 0, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(11, 60, 37, 0.3) 0%, transparent 50%);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

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

        a:hover {
            color: var(--accent-amber);
        }

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(6, 35, 21, 0.98);
            box-shadow: var(--shadow-md);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: var(--spacing-md);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .nav-logo:hover {
            color: var(--accent-gold);
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-deep) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--bg-primary);
            flex-shrink: 0;
            box-shadow: var(--shadow-gold);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li {
            position: relative;
        }

        .nav-menu a {
            display: block;
            padding: 8px 16px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }

        .nav-menu a.active {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.12);
            box-shadow: inset 0 -2px 0 var(--accent-gold);
        }

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

        .btn-login {
            padding: 8px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border-light);
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

        .btn-login:hover {
            color: var(--accent-gold);
            border-color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.06);
        }

        .btn-register {
            padding: 8px 20px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-deep) 100%);
            border: none;
            border-radius: 8px;
            box-shadow: var(--shadow-gold);
            transition: all var(--transition-fast);
        }

        .btn-register:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-glow);
            background: linear-gradient(135deg, #FFD700 0%, #FF9500 100%);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding: 10px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: calc(var(--nav-height) + var(--spacing-xl)) 0 var(--spacing-2xl);
            background-image: linear-gradient(rgba(6, 35, 21, 0.75), rgba(6, 35, 21, 0.85)), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            border-bottom: 2px solid var(--border-color);
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 40%, rgba(255, 204, 0, 0.08) 0%, transparent 55%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.1);
            border: 1px solid rgba(255, 204, 0, 0.3);
            border-radius: 50px;
            margin-bottom: var(--spacing-md);
        }

        .hero h1 {
            font-size: 2.4rem;
            font-weight: 900;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }

        .hero h1 .highlight {
            color: var(--accent-gold);
            text-shadow: 0 0 20px rgba(255, 204, 0, 0.5);
        }

        .hero-subtitle {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-lg);
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-lg);
        }

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

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.01em;
        }

        .hero-stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-series-nav {
            position: relative;
            z-index: 2;
            margin-top: var(--spacing-lg);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border-light);
        }

        .hero-series-nav a {
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(6, 35, 21, 0.7);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            transition: all var(--transition-fast);
        }

        .hero-series-nav a:hover {
            color: var(--accent-gold);
            border-color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 700;
            font-family: var(--font-family);
            border-radius: 10px;
            border: none;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-primary {
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-deep) 100%);
            box-shadow: var(--shadow-gold);
            font-weight: 800;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            background: linear-gradient(135deg, #FFD700 0%, #FF9F00 100%);
            color: var(--bg-primary);
        }

        .btn-secondary {
            color: var(--accent-gold);
            background: transparent;
            border: 2px solid var(--accent-gold);
            font-weight: 700;
        }

        .btn-secondary:hover {
            background: rgba(255, 204, 0, 0.1);
            color: var(--accent-gold);
            transform: translateY(-2px);
        }

        .btn-outline {
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border-light);
            font-weight: 600;
        }

        .btn-outline:hover {
            color: var(--accent-gold);
            border-color: var(--accent-gold);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.82rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: 12px;
        }

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

        .section-header {
            margin-bottom: var(--spacing-xl);
            max-width: 720px;
        }

        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.01em;
        }

        .section-header p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--accent-lime);
            background: rgba(50, 205, 50, 0.08);
            border: 1px solid rgba(50, 205, 50, 0.2);
            border-radius: 50px;
            margin-bottom: var(--spacing-sm);
        }

        /* ========== CONTENT CALENDAR / CMS LIST ========== */
        .content-calendar {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: var(--spacing-xl);
            align-items: start;
        }

        .cms-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
        }

        .cms-list-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition-fast);
            border-radius: 8px;
        }

        .cms-list-item:hover {
            background: rgba(255, 204, 0, 0.04);
        }

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

        .cms-item-index {
            font-size: 0.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            min-width: 36px;
            text-align: center;
            padding: 6px 0;
            flex-shrink: 0;
        }

        .cms-item-content {
            flex: 1;
            min-width: 0;
        }

        .cms-item-content h3 {
            font-size: 0.98rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 4px;
        }

        .cms-item-content h3 a {
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-item-content h3 a:hover {
            color: var(--accent-gold);
        }

        .cms-item-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }

        .cms-item-summary {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-top: 4px;
        }

        .cms-empty {
            padding: var(--spacing-lg);
            text-align: center;
            color: var(--text-muted);
            font-style: italic;
        }

        .sidebar-recommend {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }

        .sidebar-recommend h3 {
            font-size: 1rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-recommend ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-recommend li a {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 10px;
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

        .sidebar-recommend li a:hover {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.06);
        }

        .sidebar-recommend .rec-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 6px;
            background: rgba(255, 204, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--accent-gold);
        }

        /* ========== HOT TOPICS / GAME CARDS ========== */
        .hot-topics {
            background: var(--bg-primary);
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .game-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-gold);
            background: var(--bg-card-hover);
        }

        .game-card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-secondary);
        }

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

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

        .game-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            font-size: 0.68rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            color: var(--bg-primary);
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-deep) 100%);
            border-radius: 50px;
            box-shadow: var(--shadow-gold);
        }

        .game-card-badge.hot {
            background: linear-gradient(135deg, #FF4444 0%, #CC0000 100%);
            color: #fff;
        }

        .game-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .game-card-body h3 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.35;
        }

        .game-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        .game-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding-top: 10px;
            border-top: 1px solid var(--border-light);
        }

        .game-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--accent-gold);
        }

        .game-rating i {
            font-size: 0.7rem;
        }

        .btn-play {
            padding: 7px 16px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--bg-primary);
            background: var(--accent-gold);
            border-radius: 8px;
            transition: all var(--transition-fast);
        }

        .btn-play:hover {
            background: var(--accent-amber);
            transform: translateY(-1px);
            color: var(--bg-primary);
        }

        /* ========== DATA DASHBOARD ========== */
        .data-dashboard {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, #0a2e1c 100%);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--spacing-md);
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-gold);
        }

        .stat-card-icon {
            font-size: 2rem;
            margin-bottom: var(--spacing-xs);
            color: var(--accent-gold);
        }

        .stat-card-value {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .stat-card-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 2px;
        }

        /* ========== NEWS / GUIDE ========== */
        .news-guide {
            background: var(--bg-primary);
        }

        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-lg);
        }

        .guide-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }

        .guide-item:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .guide-item-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(255, 204, 0, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-gold);
        }

        .guide-item-content {
            flex: 1;
        }

        .guide-item-content h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .guide-item-content p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== DOWNLOAD CTA ========== */
        .download-cta {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, #0a4228 100%);
            border-top: 2px solid var(--border-color);
            border-bottom: 2px solid var(--border-color);
            text-align: center;
        }

        .download-cta .container {
            max-width: 680px;
        }

        .download-cta h2 {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

        .download-cta p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        .download-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-sm);
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            font-size: 0.9rem;
            font-weight: 700;
            border-radius: 12px;
            background: var(--bg-primary);
            color: var(--text-primary);
            border: 2px solid var(--accent-gold);
            transition: all var(--transition-fast);
        }

        .btn-download:hover {
            background: var(--accent-gold);
            color: var(--bg-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .btn-download i {
            font-size: 1.4rem;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--bg-primary);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding: var(--spacing-md);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-family);
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.9rem;
            color: var(--accent-gold);
            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), padding var(--transition-slow);
            padding: 0 var(--spacing-md);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-deep) 100%);
            padding: var(--spacing-xl) 0;
            text-align: center;
            border-top: 2px solid rgba(255, 255, 255, 0.2);
        }

        .cta-section .container {
            max-width: 680px;
        }

        .cta-section h2 {
            font-size: 1.7rem;
            font-weight: 900;
            color: var(--bg-primary);
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 0.95rem;
            color: rgba(6, 35, 21, 0.8);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        .cta-section .btn-primary {
            background: var(--bg-primary);
            color: var(--accent-gold);
            box-shadow: 0 4px 20px rgba(6, 35, 21, 0.3);
        }

        .cta-section .btn-primary:hover {
            background: #0a2e1c;
            color: var(--accent-gold);
            box-shadow: 0 6px 24px rgba(6, 35, 21, 0.45);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-light);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand h3 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .footer-brand p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-col ul a {
            font-size: 0.82rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col ul a:hover {
            color: var(--accent-gold);
        }

        .footer-bottom {
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-light);
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom .copyright {
            margin-top: 4px;
        }

        /* ========== FAB ========== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            background: linear-gradient(145deg, #1a1a1a 0%, #2d2d2d 100%);
            border: 3px solid var(--accent-gold);
            box-shadow: var(--shadow-gold), inset 0 1px 0 rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            cursor: pointer;
            transition: all var(--transition-base);
            opacity: 0.7;
            animation: fabBreathe 3s ease-in-out infinite;
            -webkit-tap-highlight-color: transparent;
            min-width: 56px;
            min-height: 56px;
        }

        .fab:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 6px 30px rgba(255, 204, 0, 0.5);
        }

        .fab:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF2222;
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: fabBlink 1.5s ease-in-out infinite;
        }

        @keyframes fabBreathe {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        @keyframes fabBlink {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --nav-height: 64px;
                --spacing-xl: 44px;
                --spacing-2xl: 56px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .content-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .sidebar-recommend {
                position: static;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --spacing-lg: 28px;
                --spacing-xl: 36px;
                --spacing-2xl: 48px;
            }

            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(6, 35, 21, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: var(--spacing-sm);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                transition: transform var(--transition-base);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 16px 16px;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }

            .nav-menu.open {
                transform: translateY(0);
            }

            .nav-menu a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: 8px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-actions {
                gap: 6px;
            }

            .btn-login,
            .btn-register {
                padding: 6px 14px;
                font-size: 0.78rem;
            }

            .hero {
                padding: calc(var(--nav-height) + var(--spacing-xl)) 0 var(--spacing-xl);
                min-height: 440px;
            }

            .hero h1 {
                font-size: 1.6rem;
                line-height: 1.3;
            }

            .hero-subtitle {
                font-size: 0.92rem;
            }

            .hero-stats {
                gap: var(--spacing-md);
            }

            .hero-stat-value {
                font-size: 1.3rem;
            }

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

            .game-grid {
                grid-template-columns: 1fr;
            }

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

            .guide-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }

            .fab {
                width: 48px;
                height: 48px;
                min-width: 48px;
                min-height: 48px;
                font-size: 1.1rem;
                left: 12px;
                bottom: 80px;
                border-width: 2px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-md: 16px;
                --spacing-lg: 24px;
                --spacing-xl: 32px;
                --spacing-2xl: 40px;
            }

            .container {
                padding: 0 var(--spacing-sm);
            }

            .nav-logo {
                font-size: 0.95rem;
            }

            .nav-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }

            .btn-login,
            .btn-register {
                padding: 5px 10px;
                font-size: 0.72rem;
            }

            .hero h1 {
                font-size: 1.35rem;
            }

            .hero-subtitle {
                font-size: 0.85rem;
                line-height: 1.6;
            }

            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
                width: 100%;
            }

            .btn-lg {
                padding: 14px 24px;
                font-size: 0.95rem;
            }

            .hero-stats {
                flex-wrap: wrap;
                gap: var(--spacing-sm);
            }

            .hero-stat-value {
                font-size: 1.1rem;
            }

            .hero-stat-label {
                font-size: 0.72rem;
            }

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

            .section-header h2 {
                font-size: 1.25rem;
            }

            .section-header p {
                font-size: 0.85rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }

            .stat-card-value {
                font-size: 1.4rem;
            }

            .stat-card-icon {
                font-size: 1.5rem;
            }

            .cms-list-item {
                padding: var(--spacing-sm);
                gap: var(--spacing-sm);
            }

            .cms-item-content h3 {
                font-size: 0.88rem;
            }

            .cms-item-meta {
                font-size: 0.7rem;
                gap: 6px;
            }

            .cms-item-summary {
                font-size: 0.78rem;
            }

            .game-card-body {
                padding: var(--spacing-sm);
            }

            .game-card-body h3 {
                font-size: 0.92rem;
            }

            .game-card-body p {
                font-size: 0.8rem;
            }

            .guide-item {
                padding: var(--spacing-sm);
                gap: var(--spacing-sm);
            }

            .guide-item-icon {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }

            .guide-item-content h3 {
                font-size: 0.85rem;
            }

            .guide-item-content p {
                font-size: 0.78rem;
            }

            .faq-question {
                font-size: 0.85rem;
                padding: var(--spacing-sm);
            }

            .faq-answer p {
                font-size: 0.78rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

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

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

            .download-cta h2 {
                font-size: 1.4rem;
            }

            .download-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .btn-download {
                width: 100%;
                justify-content: center;
            }

            .fab {
                width: 44px;
                height: 44px;
                min-width: 44px;
                min-height: 44px;
                left: 10px;
                bottom: 70px;
                font-size: 1rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --bg-card: #0E4A2E;
            --bg-card-hover: #125B38;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --accent-orange: #FF8C00;
            --text-white: #FFFDF0;
            --text-light: #C5E2D2;
            --text-muted: #9BC4AF;
            --border-subtle: rgba(255, 204, 0, 0.25);
            --border-gold: rgba(255, 204, 0, 0.5);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 18px 45px rgba(0, 0, 0, 0.45);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Segoe UI', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-main);
            line-height: 1.6;
            color: var(--text-white);
            background: var(--bg-primary);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            background: rgba(6, 35, 21, 0.95);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding-top: 12px;
            padding-bottom: 12px;
            gap: 12px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--accent-gold);
        }

        .nav-logo-icon {
            font-size: 1.6rem;
            color: var(--accent-gold);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: 50px;
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a:focus {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }

        .nav-menu li a.active {
            color: var(--bg-secondary);
            background: var(--accent-gold);
            font-weight: 600;
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover,
        .btn-login:focus {
            background: rgba(255, 204, 0, 0.1);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        .btn-register {
            background: var(--accent-gold);
            border: none;
            color: var(--bg-secondary);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-register:hover,
        .btn-register:focus {
            background: #e6b800;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 204, 0, 0.35);
        }

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

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle:hover span {
            background: var(--accent-gold);
        }

        /* ============ FAB ============ */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1a1a1a, #0d0d0d);
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            opacity: 0.75;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-left:hover,
        .fab-left:focus {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.45);
        }

        .fab-left:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-left .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #D32F2F;
            border: 2px solid var(--bg-secondary);
            border-radius: 50%;
            animation: fabBlink 1.5s ease-in-out infinite;
        }

        @keyframes fabFloat {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        @keyframes fabBlink {
            0%,
            100% {
                box-shadow: 0 0 6px 1px rgba(211, 47, 47, 0.6);
            }
            50% {
                box-shadow: 0 0 18px 4px rgba(211, 47, 47, 0.9);
            }
        }

        /* ============ HERO ============ */
        .hero-offline {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 60%, #0E4A2E 100%);
            position: relative;
            overflow: hidden;
            padding: 70px 0 80px;
            border-bottom: 2px solid var(--border-subtle);
        }

        .hero-offline::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .hero-offline::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(0deg, var(--bg-primary) 0%, transparent 100%);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 204, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 22px;
        }

        .hero-offline h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }

        .hero-offline h1 .highlight {
            color: var(--accent-gold);
        }

        .hero-offline .lead {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 640px;
            line-height: 1.65;
            margin-bottom: 32px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 40px;
        }

        .btn-hero-primary {
            background: var(--accent-gold);
            color: var(--bg-secondary);
            border: none;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-primary:hover,
        .btn-hero-primary:focus {
            background: #e6b800;
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255, 204, 0, 0.4);
            color: var(--bg-secondary);
        }

        .btn-hero-secondary {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-secondary:hover,
        .btn-hero-secondary:focus {
            background: rgba(255, 204, 0, 0.1);
            border-color: var(--accent-gold);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 10px;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .hero-demo-panel {
            background: rgba(6, 35, 21, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .hero-demo-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/coverpic/cover-1.jpg') center / cover no-repeat;
            opacity: 0.3;
            pointer-events: none;
        }

        .hero-demo-panel > * {
            position: relative;
            z-index: 1;
        }

        .demo-badge {
            display: inline-block;
            background: var(--accent-lime);
            color: var(--bg-secondary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .demo-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .demo-desc {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 18px;
        }

        .demo-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .demo-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-light);
        }

        .demo-features li i {
            color: var(--accent-lime);
            font-size: 1rem;
        }

        /* ============ SECTION COMMON ============ */
        .section-block {
            padding: 70px 0;
        }

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

        .section-tag {
            display: inline-block;
            color: var(--accent-gold);
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.65;
            margin-bottom: 36px;
        }

        /* ============ METRICS DASHBOARD ============ */
        .metrics-board {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            text-align: left;
        }

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

        .metric-icon {
            font-size: 2rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 0.92rem;
            color: var(--text-muted);
        }

        /* ============ FEATURE MATRIX ============ */
        .feature-matrix {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .feature-item {
            display: flex;
            flex-direction: column;
            gap: 14px;
            padding: 26px;
            background: rgba(14, 74, 46, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .feature-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .feature-item-icon {
            font-size: 2.2rem;
            color: var(--accent-gold);
            line-height: 1;
        }

        .feature-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0;
        }

        .feature-item p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* ============ COMPARISON TABLE ============ */
        .comparison-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }

        .comparison-table thead th {
            background: var(--bg-secondary);
            color: var(--accent-gold);
            font-weight: 700;
            padding: 18px 20px;
            text-align: left;
            border-bottom: 2px solid var(--border-gold);
        }

        .comparison-table tbody td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-light);
        }

        .comparison-table tbody tr:hover td {
            background: rgba(255, 204, 0, 0.05);
        }

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

        .comparison-table .check-icon {
            color: var(--accent-lime);
            font-size: 1.1rem;
        }

        .comparison-table .x-icon {
            color: #ff6b6b;
            font-size: 1.1rem;
        }

        /* ============ FAQ ============ */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            background: var(--bg-card);
            color: var(--text-white);
            font-weight: 600;
            padding: 18px 22px;
            font-size: 1rem;
            border: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-card-hover);
            color: var(--accent-gold);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-gold);
        }

        .faq-accordion .accordion-button::after {
            filter: invert(70%) sepia(60%) saturate(400%) hue-rotate(5deg);
        }

        .faq-accordion .accordion-body {
            background: var(--bg-card);
            color: var(--text-light);
            padding: 18px 22px;
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--bg-secondary) 0%, #0E4A2E 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.jpg') center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto 28px;
        }

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

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 2px solid var(--border-subtle);
            padding: 60px 0 30px;
            color: var(--text-light);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

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

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: var(--accent-gold);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0 0 8px;
        }

        .footer-bottom .copyright {
            font-size: 0.8rem;
            color: #7AA88F;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-offline h1 {
                font-size: 2.3rem;
            }

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

            .section-title {
                font-size: 1.75rem;
            }
        }

        @media (max-width: 768px) {
            .nav-inner {
                flex-wrap: wrap;
            }

            .nav-toggle {
                display: flex;
                order: 2;
            }

            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                order: 3;
                gap: 4px;
                padding: 12px 0;
            }

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

            .nav-menu li a {
                width: 100%;
                text-align: left;
                padding: 12px 16px;
            }

            .nav-actions {
                order: 1;
                margin-left: auto;
            }

            .btn-login,
            .btn-register {
                padding: 6px 14px;
                font-size: 0.82rem;
            }

            .hero-offline {
                padding: 50px 0 60px;
            }

            .hero-offline h1 {
                font-size: 1.9rem;
            }

            .hero-offline .lead {
                font-size: 1rem;
            }

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

            .hero-stats {
                gap: 18px;
            }

            .hero-stat-value {
                font-size: 1.6rem;
            }

            .hero-demo-panel {
                margin-top: 30px;
                padding: 20px;
            }

            .section-block {
                padding: 50px 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .section-subtitle {
                font-size: 0.95rem;
            }

            .comparison-table {
                font-size: 0.85rem;
            }

            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 12px 14px;
            }

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

            .cta-section p {
                font-size: 1rem;
            }

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

            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .hero-offline h1 {
                font-size: 1.6rem;
            }

            .hero-badge {
                font-size: 0.78rem;
                padding: 6px 14px;
            }

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

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

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

            .nav-actions .btn-login {
                display: none;
            }

            .nav-actions .btn-register {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B3C25;
            --bg-dark: #062315;
            --bg-card: #0D4528;
            --bg-surface: #0F4D2D;
            --bg-article: #f9faf7;
            --bg-article-alt: #f0f4ed;
            --accent-gold: #FFCC00;
            --accent-gold-dark: #E6B800;
            --accent-lime: #32CD32;
            --accent-lime-dark: #28A428;
            --text-warm: #FFFDF0;
            --text-light-green: #C5E2D2;
            --text-muted: #A0C4B0;
            --text-dark: #1a1a1a;
            --text-body: #2d2d2d;
            --text-secondary: #555;
            --border-soft: #e0e5dc;
            --border-gold: rgba(255, 204, 0, 0.3);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.18);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.25);
            --shadow-green: 0 4px 20px rgba(50, 205, 50, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-family: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-narrow {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--bg-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 2px 24px rgba(0,0,0,0.3);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            height: 66px;
            gap: 20px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-warm);
            transition: var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-logo:hover {
            color: var(--accent-gold);
        }

        .nav-logo-icon {
            font-size: 1.6rem;
            animation: floatIcon 3s ease-in-out infinite;
        }

        @keyframes floatIcon {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-4px); }
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-menu a {
            display: block;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light-green);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.06);
        }

        .nav-menu a.active {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.1);
            font-weight: 600;
        }

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

        .btn-login {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-warm);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.05);
        }

        .btn-register {
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--bg-dark);
            background: var(--accent-gold);
            transition: var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 12px rgba(255, 204, 0, 0.3);
        }

        .btn-register:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.45);
            transform: translateY(-1px);
        }

        .btn-register:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 204, 0, 0.3);
        }

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

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-warm);
            border-radius: 4px;
            transition: var(--transition-fast);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

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

        .breadcrumb .sep {
            color: rgba(255,255,255,0.3);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--accent-gold);
            font-weight: 500;
        }

        /* Article Hero - Bento Layout */
        .article-hero {
            background: var(--bg-dark);
            background-image: 
                radial-gradient(ellipse at 30% 20%, rgba(50, 205, 50, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(255, 204, 0, 0.06) 0%, transparent 60%),
                linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-primary) 100%);
            padding: 40px 0 50px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            border: 1px solid rgba(255, 204, 0, 0.08);
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid rgba(50, 205, 50, 0.06);
            pointer-events: none;
        }

        .bento-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            grid-template-rows: auto auto;
            gap: 16px;
            position: relative;
            z-index: 1;
        }

        .bento-main {
            grid-row: 1 / 3;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .bento-main .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(50, 205, 50, 0.15);
            color: var(--accent-lime);
            border: 1px solid rgba(50, 205, 50, 0.25);
            width: fit-content;
            margin-bottom: 16px;
        }

        .bento-main h1 {
            font-size: 1.95rem;
            font-weight: 800;
            color: var(--text-warm);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .bento-main .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .bento-main .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .bento-main .article-meta i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }

        .bento-side-top {
            background: rgba(255, 204, 0, 0.05);
            border: 1px solid rgba(255, 204, 0, 0.15);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 8px;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .bento-side-top .label-sm {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            font-weight: 600;
        }

        .bento-side-top .value-lg {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-gold);
        }

        .bento-side-bottom {
            background: rgba(50, 205, 50, 0.04);
            border: 1px solid rgba(50, 205, 50, 0.12);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .bento-side-bottom .cta-icon-circle {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent-lime);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.2rem;
            color: #fff;
        }

        .bento-side-bottom .cta-text {
            font-weight: 600;
            color: var(--text-warm);
            font-size: 0.9rem;
            line-height: 1.3;
        }

        .bento-side-bottom .cta-arrow {
            color: var(--accent-gold);
            font-size: 0.85rem;
            flex-shrink: 0;
            transition: var(--transition-fast);
        }

        .bento-side-bottom:hover .cta-arrow {
            transform: translateX(4px);
        }

        /* Article Body */
        .article-body-section {
            padding: 48px 0 40px;
            background: var(--bg-article);
        }

        .article-content {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-soft);
            line-height: 1.8;
            color: var(--text-body);
            font-size: 1.05rem;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--bg-dark);
            margin: 32px 0 16px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent-gold);
            line-height: 1.3;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--bg-primary);
            margin: 24px 0 12px;
            line-height: 1.35;
        }

        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #333;
            margin: 20px 0 10px;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-md);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }

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

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

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent-gold);
            background: #fdfcf5;
            padding: 18px 22px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: #555;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid #ddd;
            padding: 10px 14px;
            text-align: left;
        }

        .article-content table th {
            background: var(--bg-article-alt);
            font-weight: 600;
            color: var(--bg-dark);
        }

        .article-content a {
            color: #1a7a3a;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--accent-lime-dark);
        }

        .article-content code {
            background: #f4f4f4;
            padding: 3px 7px;
            border-radius: 4px;
            font-size: 0.9em;
        }

        .article-content pre {
            background: #f4f4f4;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 16px 0;
        }

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: 64px 24px;
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-soft);
        }

        .not-found-state .nf-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            color: var(--text-muted);
        }

        .not-found-state h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--bg-dark);
            margin-bottom: 10px;
        }

        .not-found-state p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .not-found-state .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--accent-gold);
            color: var(--bg-dark);
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition-fast);
            font-size: 0.95rem;
            box-shadow: 0 2px 12px rgba(255, 204, 0, 0.3);
        }

        .not-found-state .btn-back-home:hover {
            background: var(--accent-gold-dark);
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.45);
            transform: translateY(-2px);
        }

        /* Related Games Section */
        .related-section {
            padding: 50px 0 56px;
            background: var(--bg-article-alt);
            border-top: 1px solid var(--border-soft);
        }

        .related-section .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.07em;
            color: var(--accent-lime-dark);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--bg-dark);
            margin-bottom: 32px;
            line-height: 1.3;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-soft);
            transition: var(--transition-smooth);
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--accent-gold);
        }

        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 18px 20px 20px;
        }

        .related-card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--bg-dark);
            margin-bottom: 6px;
            line-height: 1.35;
        }

        .related-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .related-card-body .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .tag-pill {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 14px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(50, 205, 50, 0.1);
            color: #1a7a3a;
        }

        .tag-pill.gold {
            background: rgba(255, 204, 0, 0.15);
            color: #8B6914;
        }

        /* CTA Section */
        .cta-section {
            padding: 52px 0 56px;
            background: var(--bg-dark);
            background-image: 
                radial-gradient(ellipse at 20% 80%, rgba(50, 205, 50, 0.1) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(255, 204, 0, 0.08) 0%, transparent 50%);
            position: relative;
            overflow: hidden;
        }

        .cta-section .container-narrow {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--text-warm);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-light-green);
            margin-bottom: 28px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 36px;
            background: var(--accent-gold);
            color: var(--bg-dark);
            font-weight: 800;
            font-size: 1.05rem;
            border-radius: 50px;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 24px rgba(255, 204, 0, 0.4);
        }

        .cta-section .btn-cta-large:hover {
            background: #ffe033;
            box-shadow: 0 6px 32px rgba(255, 204, 0, 0.55);
            transform: translateY(-3px);
        }

        .cta-section .btn-cta-large:active {
            transform: translateY(0);
        }

        /* FAQ Section */
        .faq-section {
            padding: 52px 0 56px;
            background: #fff;
        }

        .faq-section .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.07em;
            color: var(--accent-lime-dark);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .faq-section h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--bg-dark);
            margin-bottom: 32px;
            line-height: 1.3;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #fff;
            transition: var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #d0d8cc;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--bg-dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            transition: var(--transition-fast);
        }

        .faq-question i {
            color: var(--accent-gold);
            font-size: 0.85rem;
            transition: var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-question:hover {
            background: #fafdf8;
        }

        .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

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

        .faq-item.open {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light-green);
            padding: 50px 0 30px;
            border-top: 4px solid var(--accent-gold);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-warm);
            margin-bottom: 12px;
        }

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

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-warm);
            margin-bottom: 14px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .footer-col a:hover {
            color: var(--accent-gold);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-bottom .copyright {
            font-size: 0.75rem;
            margin-top: 4px;
            opacity: 0.7;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 24px;
            bottom: 100px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 3px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.3);
            transition: var(--transition-smooth);
            animation: fabBreathe 3.5s ease-in-out infinite;
            font-size: 1.6rem;
            color: var(--accent-gold);
        }

        .fab-floating::after {
            content: '';
            position: absolute;
            inset: -5px;
            border-radius: 50%;
            border: 2px solid rgba(255, 204, 0, 0.25);
            animation: fabShimmer 2.5s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes fabBreathe {
            0%, 100% { transform: translateY(0); opacity: 0.85; }
            50% { transform: translateY(-6px); opacity: 1; }
        }

        @keyframes fabShimmer {
            0%, 100% { opacity: 0.3; transform: scale(1); }
            50% { opacity: 0.7; transform: scale(1.08); }
        }

        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.12);
            box-shadow: 0 6px 28px rgba(255, 204, 0, 0.5);
            animation: none;
        }

        .fab-floating:active {
            transform: scale(0.94);
        }

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #e53e3e;
            border: 2px solid var(--bg-dark);
            animation: blinkDot 2s ease-in-out infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .bento-grid {
                grid-template-columns: 1fr 260px;
                gap: 12px;
            }
            .bento-main {
                padding: 24px 26px;
            }
            .bento-main h1 {
                font-size: 1.6rem;
            }
            .bento-side-top {
                padding: 16px 18px;
            }
            .bento-side-bottom {
                padding: 16px 18px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .article-content {
                padding: 28px 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 66px;
                left: 0;
                right: 0;
                background: var(--bg-dark);
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 3px solid var(--accent-gold);
                box-shadow: 0 12px 32px rgba(0,0,0,0.4);
                z-index: 1000;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 13px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-actions {
                gap: 6px;
            }
            .btn-login {
                padding: 7px 13px;
                font-size: 0.8rem;
            }
            .btn-register {
                padding: 7px 15px;
                font-size: 0.8rem;
            }
            .bento-grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
                gap: 10px;
            }
            .bento-main {
                grid-row: auto;
                padding: 22px 20px;
            }
            .bento-main h1 {
                font-size: 1.4rem;
            }
            .bento-side-top,
            .bento-side-bottom {
                padding: 16px 18px;
            }
            .article-content {
                padding: 22px 20px;
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .related-card-img {
                height: 140px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .faq-section h2 {
                font-size: 1.35rem;
            }
            .fab-floating {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 0.9rem;
                gap: 6px;
            }
            .nav-logo-icon {
                font-size: 1.3rem;
            }
            .btn-login {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            .btn-register {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .bento-main {
                padding: 18px 16px;
            }
            .bento-main h1 {
                font-size: 1.25rem;
            }
            .bento-main .article-meta {
                font-size: 0.78rem;
                gap: 10px;
            }
            .article-content {
                padding: 18px 16px;
                font-size: 0.93rem;
                border-radius: var(--radius-md);
            }
            .article-content h2 {
                font-size: 1.2rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card-img {
                height: 160px;
            }
            .related-section h2 {
                font-size: 1.3rem;
            }
            .cta-section h2 {
                font-size: 1.25rem;
            }
            .cta-section .btn-cta-large {
                padding: 13px 28px;
                font-size: 0.95rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 15px 16px;
            }
            .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.88rem;
            }
            .fab-floating {
                left: 12px;
                bottom: 70px;
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
                border-width: 2px;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B3C25;
            --secondary-bg: #062315;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-warm-white: #FFFDF0;
            --text-light-green: #C5E2D2;
            --text-muted: #8AB8A3;
            --border-soft: rgba(255, 204, 0, 0.25);
            --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 14px 44px rgba(255, 204, 0, 0.18);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-body: 'Be Vietnam Pro', 'Segoe UI', 'Tahoma', system-ui, sans-serif;
            --spacing-section: 5rem;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            color: var(--text-warm-white);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover {
            color: var(--accent-lime);
        }

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

        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ===== HEADER ===== */
        .site-header {
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 1040;
            padding: 0.75rem 0;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: nowrap;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-warm-white);
            white-space: nowrap;
            letter-spacing: -0.02em;
        }

        .nav-logo:hover {
            color: var(--accent-gold);
        }

        .nav-logo-icon {
            font-size: 1.7rem;
            display: inline-flex;
            animation: gentleSwim 3s ease-in-out infinite;
        }

        @keyframes gentleSwim {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            25% { transform: translateY(-4px) rotate(-3deg); }
            75% { transform: translateY(2px) rotate(3deg); }
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            display: block;
            padding: 0.5rem 0.9rem;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-light-green);
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.1);
        }

        .nav-menu li a.active {
            position: relative;
        }

        .nav-menu li a.active::after {
            content: '';
            position: absolute;
            left: 0.9rem;
            right: 0.9rem;
            bottom: 0.25rem;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            white-space: nowrap;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 204, 0, 0.4);
            color: var(--accent-gold);
            padding: 0.45rem 1.1rem;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }

        .btn-login:hover {
            background: rgba(255, 204, 0, 0.12);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }

        .btn-register {
            background: linear-gradient(135deg, #FFCC00, #FF9F00);
            border: none;
            color: #1A1A1A;
            padding: 0.45rem 1.25rem;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(255, 204, 0, 0.3);
            transition: all var(--transition-fast);
        }

        .btn-register:hover {
            box-shadow: 0 8px 26px rgba(255, 204, 0, 0.45);
            transform: translateY(-1px);
            color: #1A1A1A;
        }

        .btn-register:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 204, 0, 0.25);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            padding: 0.4rem;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-warm-white);
            border-radius: 4px;
            transition: all var(--transition-fast);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ===== BREADCRUMB ===== */
        .breadcrumb-section {
            background: var(--secondary-bg);
            border-bottom: 1px solid rgba(255, 204, 0, 0.1);
            padding: 1.1rem 0;
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.88rem;
            flex-wrap: wrap;
        }

        .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-muted);
        }

        .breadcrumb-list li:not(:last-child)::after {
            content: '/';
            color: rgba(138, 184, 163, 0.5);
            font-weight: 400;
        }

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

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

        .breadcrumb-list li:last-child {
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* ===== HERO ===== */
        .hero-section {
            background: linear-gradient(180deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            position: relative;
            padding: 4.5rem 0 3.5rem;
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.22;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6,35,21,0.55) 0%, rgba(11,60,37,0.85) 100%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.1rem;
            color: var(--text-warm-white);
        }

        .hero-text h1 .highlight {
            color: var(--accent-gold);
            background: linear-gradient(135deg, #FFCC00, #FFD700, #FFCC00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-text .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-light-green);
            margin-bottom: 1.6rem;
            max-width: 520px;
            line-height: 1.7;
        }

        .hero-badge-group {
            display: flex;
            gap: 0.7rem;
            flex-wrap: wrap;
            margin-bottom: 1.8rem;
        }

        .hero-badge {
            background: rgba(255, 204, 0, 0.12);
            border: 1px solid rgba(255, 204, 0, 0.3);
            color: var(--accent-gold);
            padding: 0.35rem 0.85rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

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

        .coupon-main {
            background: linear-gradient(145deg, #1A1A1A, #2D2D2D);
            border: 2px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 2.2rem 1.8rem;
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.45), 0 0 30px rgba(255, 204, 0, 0.15);
            position: relative;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .coupon-main:hover {
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55), 0 0 45px rgba(255, 204, 0, 0.25);
            transform: translateY(-4px);
        }

        .coupon-main::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(from 0deg, transparent, rgba(255,204,0,0.06), transparent 30%);
            animation: rotateGlow 8s linear infinite;
        }

        @keyframes rotateGlow {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .coupon-main .coupon-label {
            position: relative;
            z-index: 2;
            font-size: 0.78rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .coupon-main h2 {
            position: relative;
            z-index: 2;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-warm-white);
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }

        .coupon-main p {
            position: relative;
            z-index: 2;
            color: var(--text-light-green);
            font-size: 0.95rem;
            margin-bottom: 1.4rem;
            line-height: 1.6;
        }

        .coupon-benefits {
            position: relative;
            z-index: 2;
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .coupon-benefits li {
            display: flex;
            align-items: center;
            gap: 0.55rem;
            color: var(--text-light-green);
            font-size: 0.9rem;
            font-weight: 500;
        }

        .coupon-benefits li i {
            color: var(--accent-lime);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .btn-coupon-claim {
            position: relative;
            z-index: 2;
            background: linear-gradient(135deg, #FFCC00, #FFA500);
            border: none;
            color: #1A1A1A;
            padding: 0.8rem 1.6rem;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 800;
            width: 100%;
            letter-spacing: 0.02em;
            box-shadow: 0 6px 20px rgba(255, 204, 0, 0.3);
            transition: all var(--transition-fast);
        }

        .btn-coupon-claim:hover {
            box-shadow: 0 10px 32px rgba(255, 204, 0, 0.45);
            transform: translateY(-2px);
            color: #1A1A1A;
        }

        .btn-coupon-claim:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(255, 204, 0, 0.25);
        }

        .coupon-mini-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem;
            margin-top: 1.2rem;
            position: relative;
            z-index: 2;
        }

        .coupon-mini {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.2);
            border-radius: var(--radius-sm);
            padding: 0.7rem 0.9rem;
            font-size: 0.78rem;
            color: var(--text-light-green);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .coupon-mini:hover {
            border-color: rgba(255, 204, 0, 0.5);
            background: rgba(255, 204, 0, 0.06);
            color: var(--accent-gold);
        }

        .coupon-mini i {
            color: var(--accent-gold);
        }

        /* ===== STATS DASHBOARD ===== */
        .stats-section {
            padding: var(--spacing-section) 0;
            background: var(--primary-bg);
            position: relative;
        }

        .stats-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.4rem;
        }

        .stat-card {
            background: linear-gradient(145deg, rgba(6,35,21,0.85), rgba(11,60,37,0.6));
            border: 1px solid rgba(255, 204, 0, 0.18);
            border-radius: var(--radius-md);
            padding: 1.6rem 1.4rem;
            text-align: left;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-lime));
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .stat-card:hover {
            border-color: rgba(255, 204, 0, 0.4);
            transform: translateY(-3px);
        }

        .stat-card:hover::after {
            opacity: 1;
        }

        .stat-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: rgba(255, 204, 0, 0.12);
            color: var(--accent-gold);
            margin-bottom: 0.9rem;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-warm-white);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stat-number .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-gold);
            margin-left: 0.2rem;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
            font-weight: 500;
        }

        .stat-change {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-lime);
            margin-top: 0.5rem;
        }

        /* ===== SKILLS MATRIX ===== */
        .skills-section {
            padding: var(--spacing-section) 0;
            background: var(--secondary-bg);
            position: relative;
        }

        .skills-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255,204,0,0.3), transparent);
        }

        .section-header {
            margin-bottom: 2.8rem;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(255, 204, 0, 0.1);
            border: 1px solid rgba(255, 204, 0, 0.3);
            color: var(--accent-gold);
            padding: 0.3rem 0.9rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.8rem;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-warm-white);
            letter-spacing: -0.02em;
            line-height: 1.25;
            max-width: 700px;
        }

        .section-header p {
            color: var(--text-light-green);
            font-size: 1rem;
            margin-top: 0.7rem;
            max-width: 620px;
            line-height: 1.7;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.4rem;
        }

        .skill-item {
            background: rgba(11, 60, 37, 0.5);
            border: 1px solid rgba(255, 204, 0, 0.15);
            border-radius: var(--radius-md);
            padding: 1.6rem 1.5rem;
            display: flex;
            gap: 1.2rem;
            align-items: flex-start;
            transition: all var(--transition-smooth);
        }

        .skill-item:hover {
            border-color: rgba(255, 204, 0, 0.4);
            background: rgba(11, 60, 37, 0.75);
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }

        .skill-icon-wrap {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: rgba(255, 204, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            flex-shrink: 0;
        }

        .skill-info h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text-warm-white);
            margin-bottom: 0.45rem;
        }

        .skill-info p {
            font-size: 0.9rem;
            color: var(--text-light-green);
            line-height: 1.6;
            margin: 0;
        }

        .skill-tags {
            display: flex;
            gap: 0.4rem;
            flex-wrap: wrap;
            margin-top: 0.7rem;
        }

        .skill-tag {
            background: rgba(255, 204, 0, 0.08);
            color: var(--accent-gold);
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            font-size: 0.72rem;
            font-weight: 600;
        }

        /* ===== COMPARISON ===== */
        .comparison-section {
            padding: var(--spacing-section) 0;
            background: var(--primary-bg);
        }

        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: stretch;
        }

        .comparison-card {
            border-radius: var(--radius-lg);
            padding: 2rem 1.6rem;
            transition: all var(--transition-smooth);
        }

        .comparison-card.before {
            background: rgba(139, 0, 0, 0.2);
            border: 1px solid rgba(255, 100, 100, 0.25);
        }

        .comparison-card.after {
            background: rgba(6, 35, 21, 0.7);
            border: 2px solid rgba(255, 204, 0, 0.5);
            box-shadow: 0 12px 36px rgba(255, 204, 0, 0.12);
        }

        .comparison-card.after:hover {
            box-shadow: 0 16px 48px rgba(255, 204, 0, 0.2);
            transform: translateY(-3px);
        }

        .comparison-badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }

        .comparison-card.before .comparison-badge {
            background: rgba(255, 100, 100, 0.15);
            color: #FF6B6B;
            border: 1px solid rgba(255, 100, 100, 0.3);
        }

        .comparison-card.after .comparison-badge {
            background: rgba(255, 204, 0, 0.15);
            color: var(--accent-gold);
            border: 1px solid rgba(255, 204, 0, 0.4);
        }

        .comparison-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-warm-white);
            margin-bottom: 1rem;
        }

        .comparison-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }

        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            font-size: 0.92rem;
            color: var(--text-light-green);
            line-height: 1.5;
        }

        .comparison-list li i {
            flex-shrink: 0;
            margin-top: 0.25rem;
            font-size: 0.85rem;
        }

        .comparison-card.before .comparison-list li i {
            color: #FF6B6B;
        }

        .comparison-card.after .comparison-list li i {
            color: var(--accent-lime);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--spacing-section) 0;
            background: var(--secondary-bg);
        }

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

        .accordion-item {
            background: rgba(11, 60, 37, 0.45);
            border: 1px solid rgba(255, 204, 0, 0.15);
            border-radius: var(--radius-sm);
            margin-bottom: 0.7rem;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .accordion-item:hover {
            border-color: rgba(255, 204, 0, 0.3);
        }

        .accordion-button {
            background: transparent;
            color: var(--text-warm-white);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 1.1rem 1.3rem;
            border: none;
            box-shadow: none;
            transition: all var(--transition-fast);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(255, 204, 0, 0.08);
            color: var(--accent-gold);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(255, 204, 0, 0.25);
            border-color: rgba(255, 204, 0, 0.5);
        }

        .accordion-button::after {
            filter: brightness(0) invert(1) sepia(1) saturate(500%) hue-rotate(360deg);
        }

        .accordion-body {
            color: var(--text-light-green);
            font-size: 0.9rem;
            padding: 1rem 1.3rem 1.3rem;
            line-height: 1.65;
            background: rgba(11, 60, 37, 0.25);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--spacing-section) 0;
            background: var(--primary-bg);
            position: relative;
        }

        .cta-panel {
            background: linear-gradient(145deg, rgba(6,35,21,0.9), rgba(11,60,37,0.75));
            border: 2px solid rgba(255, 204, 0, 0.35);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 2.5rem;
            align-items: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35), 0 0 40px rgba(255, 204, 0, 0.08);
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 280px;
            height: 100%;
            background: url('/assets/images/coverpic/cover-7.png') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-warm-white);
            margin-bottom: 0.9rem;
            letter-spacing: -0.02em;
        }

        .cta-panel p {
            color: var(--text-light-green);
            font-size: 0.98rem;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .cta-form-wrap {
            position: relative;
            z-index: 2;
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 204, 0, 0.25);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }

        .cta-form label {
            color: var(--text-light-green);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 0.35rem;
            display: block;
        }

        .cta-form input[type="text"],
        .cta-form input[type="tel"] {
            width: 100%;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 204, 0, 0.2);
            border-radius: 8px;
            padding: 0.7rem 0.9rem;
            color: var(--text-warm-white);
            font-size: 0.9rem;
            margin-bottom: 0.9rem;
            outline: none;
            transition: all var(--transition-fast);
        }

        .cta-form input:focus {
            border-color: var(--accent-gold);
            box-shadow: 0 0 0 3px rgba(255, 204, 0, 0.18);
            background: rgba(255, 255, 255, 0.1);
        }

        .cta-form input::placeholder {
            color: rgba(197, 226, 210, 0.45);
        }

        .btn-cta-submit {
            background: linear-gradient(135deg, #FFCC00, #FFA500);
            border: none;
            color: #1A1A1A;
            padding: 0.75rem 1.4rem;
            border-radius: 10px;
            font-size: 0.92rem;
            font-weight: 800;
            width: 100%;
            box-shadow: 0 5px 18px rgba(255, 204, 0, 0.3);
            transition: all var(--transition-fast);
        }

        .btn-cta-submit:hover {
            box-shadow: 0 9px 28px rgba(255, 204, 0, 0.45);
            transform: translateY(-2px);
            color: #1A1A1A;
        }

        .btn-cta-submit:active {
            transform: translateY(0);
            box-shadow: 0 3px 10px rgba(255, 204, 0, 0.25);
        }

        .cta-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.7rem;
            text-align: center;
        }

        /* ===== FAB ===== */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1050;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: linear-gradient(145deg, #1A1A1A, #2D2D2D);
            border: 3px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: all var(--transition-smooth);
            animation: fabBreathe 3s ease-in-out infinite;
            text-decoration: none;
        }

        .fab-support:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
            color: var(--accent-gold);
        }

        .fab-support:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 16px;
            height: 16px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: blinkRed 2s ease-in-out infinite;
        }

        @keyframes fabBreathe {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }

        @keyframes blinkRed {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; box-shadow: 0 0 8px rgba(211,47,47,0.7); }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid rgba(255, 204, 0, 0.15);
            padding: 3.5rem 0 1.5rem;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-gold), var(--accent-lime), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-warm-white);
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: all var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 204, 0, 0.1);
            padding-top: 1.5rem;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
            margin: 0.2rem 0;
        }

        .footer-bottom .copyright {
            font-size: 0.75rem;
            opacity: 0.7;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 2.2rem;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .coupon-main {
                max-width: 480px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.8rem;
            }
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3.2rem;
            }
            .nav-inner {
                flex-wrap: wrap;
                gap: 0.8rem;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--secondary-bg);
                flex-direction: column;
                padding: 1rem 1.5rem;
                border-bottom: 2px solid rgba(255, 204, 0, 0.25);
                gap: 0.3rem;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 0.7rem 0.9rem;
                font-size: 0.95rem;
                width: 100%;
                border-radius: 6px;
            }
            .nav-actions {
                gap: 0.4rem;
            }
            .btn-login,
            .btn-register {
                padding: 0.4rem 0.8rem;
                font-size: 0.8rem;
            }
            .hero-section {
                padding: 3rem 0 2.5rem;
                min-height: auto;
            }
            .hero-text h1 {
                font-size: 1.9rem;
            }
            .coupon-main {
                padding: 1.6rem 1.3rem;
            }
            .coupon-mini-row {
                grid-template-columns: 1fr;
            }
            .skills-grid {
                grid-template-columns: 1fr;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
                gap: 1.4rem;
            }
            .cta-panel {
                grid-template-columns: 1fr;
                padding: 2rem 1.5rem;
                gap: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.9rem;
            }
            .stat-card {
                padding: 1.2rem 1rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .fab-support {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
                bottom: 5rem;
                left: 0.75rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero-text h1 {
                font-size: 1.55rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .stats-dashboard {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .cta-panel {
                padding: 1.5rem 1rem;
            }
            .cta-panel h2 {
                font-size: 1.4rem;
            }
            .btn-coupon-claim,
            .btn-cta-submit {
                font-size: 0.9rem;
                padding: 0.7rem 1.2rem;
            }
            .coupon-main h2 {
                font-size: 1.3rem;
            }
            .footer-bottom p {
                font-size: 0.75rem;
            }
            .nav-logo {
                font-size: 1rem;
            }
            .nav-logo-icon {
                font-size: 1.3rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: #142338;
            --bg-dark: #091224;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-violet: #7C3AED;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 18px rgba(204, 255, 0, 0.2);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 42px rgba(0, 240, 255, 0.22);
            --font-base: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-fast: 0.2s ease;
            --transition-med: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 80px;
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-base);
            background: linear-gradient(165deg, var(--bg-secondary) 0%, var(--bg-primary) 45%, var(--bg-dark) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        button:focus-visible,
        a:focus-visible {
            outline: 3px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 26, 48, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            transition: background var(--transition-med), box-shadow var(--transition-med);
        }

        .site-header.scrolled {
            background: rgba(9, 18, 36, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 68px;
            position: relative;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.12rem;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            font-size: 1.6rem;
            animation: fishSwim 3s ease-in-out infinite;
            display: inline-block;
        }

        @keyframes fishSwim {
            0%, 100% {
                transform: translateX(0) rotate(0deg);
            }
            25% {
                transform: translateX(3px) rotate(-4deg);
            }
            75% {
                transform: translateX(-2px) rotate(3deg);
            }
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            flex-shrink: 1;
            flex-wrap: wrap;
            justify-content: center;
        }

        .nav-menu li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu li a:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-menu li a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
        }

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

        .btn-login {
            padding: 8px 18px;
            border: 1px solid rgba(166, 172, 175, 0.35);
            border-radius: 22px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.2);
        }

        .btn-register {
            padding: 8px 20px;
            border-radius: 22px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--bg-dark);
            background: linear-gradient(135deg, var(--accent-cyan), #4DD0E1);
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-register:hover {
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #00E5FF, var(--accent-cyan));
        }

        .btn-register:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 240, 255, 0.3);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.06);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

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

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

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

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

        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.25);
        }

        /* ============ HERO SECTION ============ */
        .page-hero {
            position: relative;
            padding: 150px 0 80px;
            background: linear-gradient(rgba(9, 18, 36, 0.75), rgba(11, 26, 48, 0.88)),
                url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            background-attachment: fixed;
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            overflow: hidden;
            min-height: 75vh;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 100%;
            background:
                radial-gradient(ellipse at 70% 30%, rgba(0, 240, 255, 0.07) 0%, transparent 55%),
                radial-gradient(ellipse at 20% 70%, rgba(204, 255, 0, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            text-align: left;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .hero-badge i {
            font-size: 0.8rem;
            animation: pulseBadge 2s ease-in-out infinite;
        }

        @keyframes pulseBadge {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }

        .hero-content h1 {
            font-size: 2.7rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
        }

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

        .hero-desc {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 580px;
            text-align: left;
        }

        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
            list-style: none;
        }

        .hero-points li {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 7px 14px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .hero-points li:hover {
            border-color: var(--accent-cyan);
            color: var(--text-primary);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
        }

        .hero-points li i {
            color: var(--accent-lime);
            font-size: 0.75rem;
        }

        .hero-form-wrapper {
            background: rgba(20, 35, 56, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-neon);
            transition: box-shadow var(--transition-med);
        }

        .hero-form-wrapper:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
        }

        .hero-form-wrapper h2 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .hero-form-wrapper .form-subtitle {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .form-group input {
            width: 100%;
            padding: 12px 16px;
            background: rgba(9, 18, 36, 0.8);
            border: 1px solid rgba(166, 172, 175, 0.25);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 0.92rem;
            font-family: inherit;
            transition: all var(--transition-fast);
        }

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

        .form-group input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.25);
            background: rgba(9, 18, 36, 0.95);
        }

        .btn-submit {
            width: 100%;
            padding: 13px 20px;
            background: linear-gradient(135deg, var(--accent-cyan), #29B6F6);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--bg-dark);
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.35);
            margin-top: 4px;
        }

        .btn-submit:hover {
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
        }

        .btn-submit:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(0, 240, 255, 0.25);
        }

        .form-note {
            text-align: center;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 14px;
        }

        /* ============ SECTION BASE ============ */
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 720px;
            text-align: left;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-tag::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============ METRICS DASHBOARD ============ */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 10px;
        }

        .metric-card {
            background: rgba(20, 35, 56, 0.6);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }

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

        .metric-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

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

        .metric-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.2);
            margin-bottom: 16px;
            font-size: 1.2rem;
            color: var(--accent-cyan);
            transition: all var(--transition-fast);
        }

        .metric-card:hover .metric-icon {
            background: rgba(0, 240, 255, 0.18);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
        }

        .metric-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }

        .metric-number .unit {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-lime);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            line-height: 1.4;
        }

        /* ============ SERVICE MATRIX ============ */
        .service-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .service-item {
            background: rgba(20, 35, 56, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition-med);
            position: relative;
            overflow: hidden;
        }

        .service-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .service-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .service-item:hover::before {
            opacity: 1;
        }

        .service-thumb {
            width: 110px;
            height: 110px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            border: 1px solid rgba(0, 240, 255, 0.15);
            position: relative;
        }

        .service-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .service-item:hover .service-thumb img {
            transform: scale(1.06);
        }

        .service-info h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .service-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 12px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tag {
            padding: 4px 10px;
            font-size: 0.72rem;
            font-weight: 600;
            border-radius: 14px;
            background: rgba(204, 255, 0, 0.08);
            border: 1px solid rgba(204, 255, 0, 0.2);
            color: var(--accent-lime);
        }

        /* ============ COMPARISON SECTION ============ */
        .comparison-section {
            background: linear-gradient(rgba(9, 18, 36, 0.85), rgba(11, 26, 48, 0.92)),
                url('/assets/images/backpic/back-1.jpg') center/cover no-repeat fixed;
            background-attachment: fixed;
            padding: 70px 0;
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
        }

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

        .comparison-card {
            background: rgba(20, 35, 56, 0.75);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            transition: all var(--transition-med);
        }

        .comparison-card:hover {
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: var(--shadow-neon);
        }

        .comparison-card.featured {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: var(--shadow-neon);
            position: relative;
        }

        .comparison-card.featured::after {
            content: 'PHỔ BIẾN NHẤT';
            position: absolute;
            top: -12px;
            right: 20px;
            padding: 4px 14px;
            background: linear-gradient(135deg, var(--accent-cyan), #26C6DA);
            color: var(--bg-dark);
            font-size: 0.7rem;
            font-weight: 800;
            letter-spacing: 0.06em;
            border-radius: 20px;
        }

        .comparison-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .comparison-list {
            list-style: none;
            margin-top: 12px;
        }

        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(166, 172, 175, 0.1);
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

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

        .comparison-list li i {
            color: var(--accent-lime);
            font-size: 0.85rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .comparison-list li i.fa-xmark {
            color: #FF5252;
        }

        /* ============ STEPS FLOW ============ */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            counter-reset: step;
        }

        .step-card {
            background: rgba(20, 35, 56, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            position: relative;
            transition: all var(--transition-med);
            counter-increment: step;
        }

        .step-card::before {
            content: counter(step);
            position: absolute;
            top: 18px;
            right: 20px;
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(0, 240, 255, 0.1);
            line-height: 1;
            pointer-events: none;
            transition: color var(--transition-fast);
        }

        .step-card:hover {
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .step-card:hover::before {
            color: rgba(0, 240, 255, 0.2);
        }

        .step-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.2);
            color: var(--accent-cyan);
            font-size: 1.05rem;
            margin-bottom: 16px;
            transition: all var(--transition-fast);
        }

        .step-card:hover .step-icon {
            background: rgba(0, 240, 255, 0.2);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .step-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 820px;
            margin: 0;
        }

        .faq-item {
            background: rgba(20, 35, 56, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.25);
        }

        .faq-item.active {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.15);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: transparent;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            transition: all var(--transition-med);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: rgba(0, 240, 255, 0.25);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 20px 20px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: 70px 0 90px;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.05)),
                rgba(20, 35, 56, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-xl);
            padding: 52px 40px;
            text-align: center;
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.1);
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(0, 240, 255, 0.05) 0%, transparent 60%);
            animation: rotateGlow 12s linear infinite;
            pointer-events: none;
        }

        @keyframes rotateGlow {
            0% {
                transform: rotate(0deg);
            }
            100% {
                transform: rotate(360deg);
            }
        }

        .cta-box h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.65;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--accent-cyan), #26C6DA);
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--bg-dark);
            letter-spacing: 0.02em;
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .btn-cta-primary:hover {
            box-shadow: 0 10px 34px rgba(0, 240, 255, 0.55);
            transform: translateY(-3px);
        }

        .btn-cta-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 12px rgba(0, 240, 255, 0.3);
        }

        .btn-cta-secondary {
            padding: 14px 28px;
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            transition: all var(--transition-fast);
        }

        .btn-cta-secondary:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
        }

        /* ============ FAB ============ */
        .fab-support {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(9, 18, 36, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition-med);
            font-size: 1.3rem;
            color: var(--accent-cyan);
            position: relative;
            overflow: hidden;
        }

        .fab-support::before {
            content: '';
            position: absolute;
            inset: -2px;
            z-index: -1;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan), #7C3AED);
            background-size: 300% 300%;
            animation: fabGradient 3s ease-in-out infinite;
        }

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

        .fab-support::after {
            content: '';
            position: absolute;
            top: 3px;
            right: 3px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #FF5252;
            border: 2px solid var(--bg-dark);
            animation: fabBlink 1.8s ease-in-out infinite;
        }

        @keyframes fabBlink {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.3);
            }
        }

        .fab-support:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            transform: scale(1.08);
        }

        .fab-support:active {
            transform: scale(0.95);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 55px 0 25px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

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

        .footer-col h4 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
        }

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

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

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-col ul li a::before {
            content: '›';
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.9rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(166, 172, 175, 0.12);
            padding-top: 22px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-bottom .copyright {
            margin-top: 4px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

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

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

            .hero-grid {
                gap: 32px;
            }

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

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .service-grid {
                gap: 18px;
            }

            .service-thumb {
                width: 90px;
                height: 90px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }

            .nav-inner {
                min-height: 60px;
                gap: 10px;
                flex-wrap: nowrap;
            }

            .nav-logo {
                font-size: 0.92rem;
                gap: 6px;
            }

            .nav-logo-icon {
                font-size: 1.3rem;
            }

            .nav-toggle {
                display: flex;
                order: 1;
            }

            .nav-actions {
                order: 2;
                margin-left: auto;
            }

            .btn-login,
            .btn-register {
                padding: 7px 14px;
                font-size: 0.78rem;
                border-radius: 18px;
            }

            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: rgba(9, 18, 36, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                padding: 16px 20px;
                gap: 4px;
                display: none;
                border-radius: 0 0 16px 16px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
            }

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

            .nav-menu li a {
                padding: 12px 16px;
                border-radius: 10px;
                font-size: 0.92rem;
                width: 100%;
                justify-content: flex-start;
            }

            .nav-menu li a.active {
                justify-content: flex-start;
            }

            .page-hero {
                padding: 120px 0 60px;
                min-height: auto;
                background-attachment: scroll;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-content h1 {
                font-size: 1.85rem;
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .hero-form-wrapper {
                padding: 24px 20px;
            }

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

            .metric-number {
                font-size: 1.5rem;
            }

            .metric-card {
                padding: 18px 16px;
            }

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

            .service-item {
                padding: 20px;
                gap: 16px;
            }

            .service-thumb {
                width: 80px;
                height: 80px;
            }

            .comparison-section {
                background-attachment: scroll;
                padding: 50px 0;
            }

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

            .comparison-card {
                padding: 22px 20px;
            }

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

            .step-card {
                padding: 20px 18px;
            }

            .step-card::before {
                font-size: 2.2rem;
                top: 14px;
                right: 16px;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .cta-box {
                padding: 36px 24px;
            }

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

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

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

            .fab-support {
                left: 16px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                font-size: 1.15rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            :root {
                --spacing-section: 40px;
            }

            .nav-logo {
                font-size: 0.82rem;
                letter-spacing: -0.02em;
            }

            .nav-logo-icon {
                font-size: 1.15rem;
            }

            .btn-login,
            .btn-register {
                padding: 6px 11px;
                font-size: 0.72rem;
            }

            .nav-actions {
                gap: 6px;
            }

            .hero-content h1 {
                font-size: 1.5rem;
            }

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

            .hero-points li {
                font-size: 0.75rem;
                padding: 5px 10px;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .metric-card {
                padding: 16px 14px;
                display: flex;
                align-items: center;
                gap: 14px;
            }

            .metric-icon {
                width: 40px;
                height: 40px;
                margin-bottom: 0;
                font-size: 1rem;
                flex-shrink: 0;
            }

            .metric-number {
                font-size: 1.35rem;
                margin-bottom: 2px;
            }

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

            .service-item {
                flex-direction: column;
                gap: 14px;
            }

            .service-thumb {
                width: 100%;
                height: 150px;
            }

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

            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 0.82rem;
            }

            .cta-box {
                padding: 28px 18px;
                border-radius: var(--radius-lg);
            }

            .cta-box h2 {
                font-size: 1.25rem;
            }

            .cta-box p {
                font-size: 0.88rem;
            }

            .btn-cta-primary,
            .btn-cta-secondary {
                padding: 12px 20px;
                font-size: 0.82rem;
                width: 100%;
                border-radius: 24px;
            }

            .cta-actions {
                flex-direction: column;
                gap: 10px;
            }

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

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

            .fab-support {
                left: 12px;
                bottom: 72px;
                width: 46px;
                height: 46px;
                font-size: 1.05rem;
            }

            .comparison-card.featured::after {
                font-size: 0.65rem;
                padding: 3px 10px;
                right: 12px;
            }
        }