/* roulang page: index */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1E;
            --bg-elevated: #242426;
            --accent-primary: #FF4500;
            --accent-secondary: #FF0000;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2E2E30;
            --border-light: #3A3A3E;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.5);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
            --shadow-accent: 0 4px 20px rgba(255,69,0,0.35);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --section-spacing: 72px;
            --card-gap: 28px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

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

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

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

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

        .section-padding-sm {
            padding: 48px 0;
        }

        .section-padding-lg {
            padding: 96px 0;
        }

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background-color var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background-color: rgba(11, 11, 11, 0.98);
            box-shadow: 0 4px 20px rgba(0,0,0,0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 18px;
            color: var(--text-primary);
            letter-spacing: 0.3px;
            line-height: 1.3;
            max-width: 260px;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: 900;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 4px 12px rgba(255,69,0,0.4);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
        }

        .logo-text strong {
            font-size: 15px;
            font-weight: 800;
            line-height: 1.2;
        }

        .logo-text span {
            font-size: 11px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 14px;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background-color: var(--bg-elevated);
        }

        .main-nav a.active {
            color: var(--accent-primary);
            background-color: rgba(255,69,0,0.12);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 22px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 14px;
            cursor: pointer;
            border: none;
            transition: all var(--transition-base);
            text-align: center;
            line-height: 1.2;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #fff;
            box-shadow: 0 4px 16px rgba(255,69,0,0.35);
        }

        .btn-primary:hover {
            box-shadow: 0 6px 24px rgba(255,69,0,0.55);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.97);
            box-shadow: 0 2px 8px rgba(255,69,0,0.3);
        }

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

        .btn-outline:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background-color: rgba(255,69,0,0.08);
        }

        .btn-gold {
            background: linear-gradient(135deg, #FFBF00, #FF9F00);
            color: #1a1a1a;
            box-shadow: 0 4px 16px rgba(255,191,0,0.3);
        }

        .btn-gold:hover {
            box-shadow: 0 6px 24px rgba(255,191,0,0.5);
            transform: translateY(-2px);
            color: #1a1a1a;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            border-radius: var(--radius-lg);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 12px;
            border-radius: var(--radius-sm);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text-primary);
        }

        .mobile-toggle svg {
            width: 28px;
            height: 28px;
        }

        /* Hero Section - No large image, icon matrix + status bar */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: 
                radial-gradient(ellipse at 30% 20%, rgba(255,69,0,0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 60%, rgba(255,0,0,0.1) 0%, transparent 45%),
                linear-gradient(180deg, #0B0B0B 0%, #161616 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 900px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,69,0,0.15);
            border: 1px solid rgba(255,69,0,0.35);
            color: var(--accent-primary);
            padding: 8px 16px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #00F0FF;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            color: var(--text-primary);
        }

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

        .hero-description {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 700px;
        }

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

        .hero-stats-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 18px 24px;
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-right: 16px;
            border-right: 1px solid var(--border-color);
        }

        .hero-stat:last-child {
            border-right: none;
            padding-right: 0;
        }

        .hero-stat-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,69,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 18px;
            flex-shrink: 0;
        }

        .hero-stat-text strong {
            display: block;
            font-size: 16px;
            font-weight: 800;
            color: var(--text-primary);
        }

        .hero-stat-text span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .icon-matrix {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 36px;
        }

        .icon-matrix-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 100px;
            padding: 10px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .icon-matrix-item:hover {
            border-color: var(--accent-primary);
            color: var(--text-primary);
            background: var(--bg-elevated);
        }

        .icon-matrix-item i {
            color: var(--accent-primary);
            font-size: 16px;
        }

        /* Section Headers */
        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 700px;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(255,69,0,0.12);
            color: var(--accent-primary);
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        /* Collection Directory Section */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: var(--card-gap);
        }

        .collection-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            position: relative;
        }

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

        .collection-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

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

        .collection-card:hover .collection-card-img img {
            transform: scale(1.05);
        }

        .collection-card-img .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent-primary);
            color: #fff;
            padding: 6px 12px;
            border-radius: 100px;
            font-size: 11px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .collection-card-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .collection-card-body h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .collection-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .collection-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--accent-primary);
            transition: all var(--transition-fast);
        }

        .collection-card-link:hover {
            color: var(--accent-gold);
            gap: 10px;
        }

        /* Recommended Section */
        .recommend-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }

        .recommend-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: all var(--transition-base);
        }

        .recommend-item:hover {
            border-color: var(--accent-primary);
            background: var(--bg-elevated);
            box-shadow: var(--shadow-sm);
        }

        .recommend-item-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255,69,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 22px;
            flex-shrink: 0;
        }

        .recommend-item-text h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .recommend-item-text p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.4;
        }

        /* Guest Highlights Section */
        .guest-slider {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding-bottom: 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-primary) var(--bg-card);
        }

        .guest-slider::-webkit-scrollbar {
            height: 6px;
        }

        .guest-slider::-webkit-scrollbar-track {
            background: var(--bg-card);
            border-radius: 100px;
        }

        .guest-slider::-webkit-scrollbar-thumb {
            background: var(--accent-primary);
            border-radius: 100px;
        }

        .guest-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-base);
        }

        .guest-card:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-md);
        }

        .guest-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-gold));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(255,69,0,0.3);
        }

        .guest-card h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .guest-card .guest-role {
            font-size: 13px;
            color: var(--accent-primary);
            font-weight: 600;
            margin-bottom: 12px;
            display: block;
        }

        .guest-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .guest-card a {
            font-weight: 700;
            font-size: 13px;
        }

        /* Hot Topics Section */
        .topics-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 100px;
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .topic-tag:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(255,69,0,0.08);
            transform: translateY(-2px);
        }

        .topic-tag.hot {
            border-color: var(--accent-primary);
            background: rgba(255,69,0,0.15);
            color: var(--accent-primary);
        }

        /* Info/News Section */
        .info-layout {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 32px;
        }

        .info-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .info-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-fast);
        }

        .info-list-item:hover {
            padding-left: 8px;
        }

        .info-list-item .info-num {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: var(--accent-primary);
            flex-shrink: 0;
        }

        .info-list-item-content h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.3;
        }

        .info-list-item-content .info-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .info-sidebar {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .info-sidebar h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .sidebar-recommend-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .sidebar-recommend-item {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 12px;
            background: var(--bg-elevated);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .sidebar-recommend-item:hover {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-recommend-item .side-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(255,69,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .sidebar-recommend-item span {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            line-height: 1.4;
        }

        /* Usage Guide Section */
        .guide-layout {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .guide-column {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-base);
        }

        .guide-column:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-md);
        }

        .guide-column h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .guide-column h3 i {
            color: var(--accent-primary);
        }

        .guide-column ul {
            list-style: none;
            padding: 0;
        }

        .guide-column ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.5;
        }

        .guide-column ul li:last-child {
            border-bottom: none;
        }

        .guide-column ul li::before {
            content: '→';
            color: var(--accent-primary);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Steps Section */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px;
            position: relative;
            transition: all var(--transition-base);
            text-align: left;
        }

        .step-card:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(255,69,0,0.3);
        }

        .step-card h3 {
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ Section */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
        }

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

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            font-size: 15px;
            color: var(--text-primary);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            color: var(--accent-primary);
            font-size: 18px;
        }

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

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

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

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: 
                radial-gradient(ellipse at center, rgba(255,69,0,0.2) 0%, transparent 60%),
                linear-gradient(135deg, #1C1C1E 0%, #0B0B0B 100%);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            border: 1px solid rgba(255,69,0,0.25);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(255,69,0,0.08) 0%, transparent 50%);
            animation: rotate-bg 30s linear infinite;
            pointer-events: none;
        }

        @keyframes rotate-bg {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 900;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        .cta-section .btn {
            position: relative;
            z-index: 2;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            border: 2px solid var(--accent-gold);
            box-shadow: 0 0 20px rgba(255,69,0,0.5), 0 4px 16px rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
            opacity: 0.6;
            transition: all var(--transition-base);
            animation: fab-float 3s ease-in-out infinite;
            text-decoration: none;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 0 30px rgba(255,69,0,0.8), 0 6px 20px rgba(0,0,0,0.6);
        }

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

        .fab .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FF0000;
            border: 2px solid #fff;
            animation: fab-blink 1.5s infinite;
        }

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

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

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 100px;
            padding: 6px 12px;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .footer-badge i {
            color: var(--accent-gold);
        }

        /* Mobile Navigation */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 8px;
        }

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

        .mobile-menu a {
            padding: 14px 16px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }

        .mobile-menu a.active {
            color: var(--accent-primary);
            background: rgba(255,69,0,0.12);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 42px;
            }

            .info-layout {
                grid-template-columns: 1fr;
            }

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

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

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

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

            .mobile-toggle {
                display: block;
            }

            .header-actions .btn-outline {
                display: none;
            }

            .hero {
                padding-top: 110px;
                padding-bottom: 60px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero-description {
                font-size: 16px;
            }

            .hero-stats-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .hero-stat {
                border-right: none;
                padding-right: 0;
                border-bottom: 1px solid var(--border-color);
                padding-bottom: 12px;
                width: 100%;
            }

            .hero-stat:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }

            .icon-matrix {
                gap: 8px;
            }

            .icon-matrix-item {
                padding: 8px 14px;
                font-size: 12px;
            }

            .section-padding {
                padding: 48px 0;
            }

            .section-padding-lg {
                padding: 60px 0;
            }

            .section-header h2 {
                font-size: 28px;
            }

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

            .recommend-list {
                grid-template-columns: 1fr;
            }

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

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

            .cta-section {
                padding: 40px 24px;
            }

            .cta-section h2 {
                font-size: 28px;
            }

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

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

            .fab {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 20px;
            }

            .logo {
                max-width: 200px;
                font-size: 14px;
            }

            .logo-text strong {
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 26px;
            }

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

            .hero-cta-group .btn {
                width: 100%;
            }

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

            .section-header h2 {
                font-size: 24px;
            }

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

            .guest-card {
                flex: 0 0 260px;
            }

            .info-list-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .info-list-item .info-num {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }

            .faq-question {
                font-size: 14px;
                padding: 16px 18px;
            }

            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 13px;
            }

            .header-inner {
                min-height: 60px;
            }

            .mobile-menu {
                top: 60px;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0F0C20;
            --secondary-bg: #0B1A30;
            --surface: #15122B;
            --surface-light: #1E1A38;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --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: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 18px rgba(204, 255, 0, 0.22);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --nav-height: 76px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

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

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

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

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

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

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

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-primary);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: var(--shadow-lime);
            flex-shrink: 0;
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
        }

        .logo-text strong {
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.3px;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-text span {
            font-size: 11px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

        .main-nav a.active {
            color: var(--accent-lime);
            background: rgba(204, 255, 0, 0.1);
            box-shadow: inset 0 0 0 1px rgba(204, 255, 0, 0.25);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-lime);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary-bg);
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: var(--shadow-lime);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.4);
            background: linear-gradient(135deg, #D9FF33, #33F5FF);
        }

        .btn-signup:active {
            transform: translateY(1px);
            box-shadow: var(--shadow-lime);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 28px;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            padding: calc(var(--nav-height) + 50px) 0 40px;
            background: linear-gradient(160deg, var(--primary-bg) 0%, var(--secondary-bg) 55%, #0A1428 100%);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -150px;
            left: -100px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--accent-cyan);
            font-weight: 500;
        }

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

        .article-breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-dot {
            width: 5px;
            height: 5px;
            background: var(--accent-cyan);
            border-radius: 50%;
            opacity: 0.7;
        }

        .article-meta .meta-category {
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 12px;
        }

        .article-hero h1 {
            font-size: clamp(26px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }

        .article-hero .article-excerpt {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 800px;
            line-height: 1.65;
        }

        /* ========== ARTICLE BODY ========== */
        .article-main {
            padding: 40px 0 80px;
            background: var(--primary-bg);
            flex: 1;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 40px;
            align-items: start;
        }

        .article-body {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid rgba(0, 240, 255, 0.12);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
            min-width: 0;
        }

        .article-body .article-featured-image {
            margin: -40px -40px 32px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            overflow: hidden;
            position: relative;
        }

        .article-body .article-featured-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .article-body .article-featured-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--surface) 0%, transparent 100%);
            pointer-events: none;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--text-primary);
        }

        .article-body p {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
            color: var(--text-secondary);
        }

        .article-body li {
            margin-bottom: 10px;
            line-height: 1.65;
        }

        .article-body li::marker {
            color: var(--accent-cyan);
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 20px 24px;
            border-left: 4px solid var(--accent-lime);
            background: rgba(204, 255, 0, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-primary);
        }

        .article-body a {
            color: var(--accent-cyan);
            border-bottom: 1px solid rgba(0, 240, 255, 0.4);
            transition: var(--transition);
        }

        .article-body a:hover {
            color: var(--accent-lime);
            border-bottom-color: var(--accent-lime);
        }

        .article-cta-box {
            margin: 32px 0 0;
            padding: 28px;
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.08), rgba(0, 240, 255, 0.06));
            border: 1px solid rgba(204, 255, 0, 0.25);
            border-radius: var(--radius-md);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .article-cta-box h3 {
            margin: 0;
            font-size: 19px;
            color: var(--text-primary);
        }

        .article-cta-box p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .article-cta-box .btn {
            align-self: flex-start;
            padding: 12px 26px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 15px;
            color: var(--primary-bg);
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-lime);
            text-decoration: none;
            display: inline-block;
        }

        .article-cta-box .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.45);
            color: var(--primary-bg);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 240, 255, 0.12);
        }

        .article-not-found .icon {
            font-size: 56px;
            margin-bottom: 20px;
        }

        .article-not-found h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .article-not-found .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 15px;
            color: var(--primary-bg);
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-lime);
            text-decoration: none;
        }

        .article-not-found .btn:hover {
            transform: translateY(-2px);
            color: var(--primary-bg);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }

        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid rgba(0, 240, 255, 0.12);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.2px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 .icon {
            color: var(--accent-cyan);
        }

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

        .sidebar-card ul li a {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            border-color: rgba(0, 240, 255, 0.2);
        }

        .sidebar-tip {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.08), rgba(0, 240, 255, 0.05));
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .sidebar-tip h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--accent-lime);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-tip p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .sidebar-tip .btn {
            display: inline-block;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 14px;
            color: var(--primary-bg);
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-lime);
            text-decoration: none;
        }

        .sidebar-tip .btn:hover {
            transform: translateY(-2px);
            color: var(--primary-bg);
        }

        /* ========== FAB ========== */
        .fab {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 500;
            width: 56px;
            height: 56px;
            border-radius: 28px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            opacity: 0.6;
            position: relative;
            text-decoration: none;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 28px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            z-index: -1;
            opacity: 0.8;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
        }

        .fab:active {
            transform: scale(0.95);
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.6);
        }

        .fab .fab-icon {
            font-size: 24px;
            color: var(--accent-cyan);
            transition: var(--transition);
        }

        .fab:hover .fab-icon {
            color: var(--accent-lime);
            text-shadow: 0 0 12px rgba(204, 255, 0, 0.6);
        }

        .fab .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: fab-pulse 2s infinite;
        }

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080612;
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 60px 0 30px;
            margin-top: 0;
        }

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

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

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

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .footer-badge i {
            font-style: normal;
            color: var(--accent-cyan);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .article-sidebar .sidebar-card,
            .article-sidebar .sidebar-tip {
                flex: 1;
                min-width: 280px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .nav-container {
                flex-wrap: wrap;
                gap: 12px;
                padding: 8px 0;
            }

            .logo-text strong {
                font-size: 13px;
            }

            .logo-text span {
                font-size: 10px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 18px;
                border-radius: 10px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 4px;
                gap: 4px;
                scrollbar-width: thin;
                scrollbar-color: rgba(0, 240, 255, 0.3) transparent;
            }

            .main-nav::-webkit-scrollbar {
                height: 3px;
            }

            .main-nav::-webkit-scrollbar-track {
                background: transparent;
            }

            .main-nav::-webkit-scrollbar-thumb {
                background: rgba(0, 240, 255, 0.3);
                border-radius: 3px;
            }

            .main-nav a {
                padding: 8px 12px;
                font-size: 13px;
                flex-shrink: 0;
            }

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

            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 13px;
            }

            .article-hero {
                padding: calc(var(--nav-height) + 90px) 0 32px;
            }

            .article-body {
                padding: 24px;
            }

            .article-body .article-featured-image {
                margin: -24px -24px 24px;
                border-radius: var(--radius-md) var(--radius-md) 0 0;
            }

            .article-body .article-featured-image img {
                height: 240px;
            }

            .article-body h2 {
                font-size: 21px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-sidebar {
                flex-direction: column;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }

            .fab {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                border-radius: 24px;
            }

            .fab::before {
                border-radius: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .article-hero h1 {
                font-size: 23px;
            }

            .article-hero .article-excerpt {
                font-size: 15px;
            }

            .article-body {
                padding: 18px;
            }

            .article-body .article-featured-image {
                margin: -18px -18px 20px;
                border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            }

            .article-body .article-featured-image img {
                height: 190px;
            }

            .article-body p {
                font-size: 15px;
            }

            .article-cta-box {
                padding: 20px;
            }

            .article-cta-box .btn {
                width: 100%;
                text-align: center;
            }

            .nav-actions {
                gap: 6px;
            }

            .btn-login {
                padding: 7px 10px;
                font-size: 12px;
            }

            .btn-signup {
                padding: 7px 12px;
                font-size: 12px;
            }

            .footer-badges {
                gap: 8px;
            }

            .footer-badge {
                font-size: 11px;
                padding: 5px 10px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-tertiary: #0D3522;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A8C4B8;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-subtle: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.35);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
            --font-primary: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
            --section-spacing: 4.5rem;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: var(--accent-gold);
            transition: color var(--transition-fast);
        }
        
        a:hover {
            color: #FFE44D;
        }
        
        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
            border-radius: 4px;
        }
        
        button:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 3px;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.75rem;
            color: var(--text-white);
        }
        
        h1 {
            font-size: clamp(2rem, 4.5vw, 3.25rem);
            font-weight: 800;
            letter-spacing: -0.01em;
        }
        
        h2 {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
        }
        
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
            font-weight: 650;
        }
        
        p {
            margin-bottom: 1rem;
        }
        
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        /* Header / Navigation */
        .site-header {
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all var(--transition-base);
        }
        
        .site-header.scrolled {
            background: rgba(10, 46, 28, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            flex-shrink: 0;
            min-width: 0;
        }
        
        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--accent-gold), #FFC400);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
            box-shadow: var(--shadow-gold);
        }
        
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }
        
        .logo-text strong {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        
        .logo-text span {
            font-size: 0.75rem;
            color: var(--accent-gold);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        
        .main-nav a {
            color: var(--text-mint);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }
        
        .main-nav a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }
        
        .main-nav a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.12);
            font-weight: 600;
        }
        
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .btn-login {
            background: transparent;
            color: var(--text-white);
            border: 1px solid var(--border-subtle);
            padding: 8px 18px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #FFC400);
            color: #1A1A1A;
            border: none;
            padding: 8px 20px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: var(--shadow-gold);
        }
        
        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.4);
            background: linear-gradient(135deg, #FFE44D, #FFD700);
        }
        
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-white);
            width: 42px;
            height: 42px;
            border-radius: 8px;
            font-size: 1.2rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            align-items: center;
            justify-content: center;
        }
        
        .nav-toggle:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        
        /* Hero Section */
        .hero-section {
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
            background: linear-gradient(160deg, var(--bg-secondary) 0%, var(--bg-primary) 50%, var(--bg-tertiary) 100%);
            min-height: 500px;
            display: flex;
            align-items: center;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 1.5rem;
        }
        
        .hero-title {
            font-size: clamp(2rem, 4.5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 1.25rem;
            color: var(--text-white);
        }
        
        .hero-title .highlight {
            color: var(--accent-gold);
            display: inline;
        }
        
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-mint);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        
        .btn-primary-hero {
            background: linear-gradient(135deg, var(--accent-gold), #FFC400);
            color: #1A1A1A;
            border: none;
            padding: 13px 28px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-gold);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-primary-hero:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255, 215, 0, 0.4);
        }
        
        .btn-outline-hero {
            background: transparent;
            color: var(--text-white);
            border: 1px solid var(--border-subtle);
            padding: 13px 24px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-outline-hero:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.06);
        }
        
        .hero-panel {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(8px);
            position: relative;
            z-index: 2;
        }
        
        .hero-panel-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
        }
        
        .ranking-item:last-child {
            border-bottom: none;
        }
        
        .ranking-item:hover {
            background: rgba(255, 215, 0, 0.04);
            padding-left: 8px;
            border-radius: 8px;
        }
        
        .rank-number {
            width: 32px;
            height: 32px;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border-gold);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--accent-gold);
            flex-shrink: 0;
        }
        
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        
        .rank-info strong {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
        }
        
        .rank-info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        
        .rank-score {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent-gold);
            flex-shrink: 0;
        }
        
        /* Section Base */
        .section-block {
            padding: var(--section-spacing) 0;
        }
        
        .section-header {
            margin-bottom: 2.5rem;
        }
        
        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.1);
            padding: 5px 14px;
            border-radius: 30px;
            margin-bottom: 0.75rem;
        }
        
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        
        .section-desc {
            color: var(--text-mint);
            font-size: 1rem;
            max-width: 700px;
            line-height: 1.7;
        }
        
        /* Criteria Cards */
        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
        }
        
        .criteria-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .criteria-card:hover {
            border-color: var(--border-gold);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.06);
        }
        
        .criteria-card .icon-wrap {
            width: 48px;
            height: 48px;
            background: rgba(255, 215, 0, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }
        
        .criteria-card h3 {
            font-size: 1.1rem;
            font-weight: 650;
            margin-bottom: 0.6rem;
        }
        
        .criteria-card p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.65;
            margin-bottom: 0;
        }
        
        /* Info / Steps */
        .info-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        
        .info-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-md);
        }
        
        .info-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 300px;
        }
        
        .info-content h2 {
            margin-bottom: 1rem;
        }
        
        .info-content p {
            color: var(--text-mint);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        
        .check-list {
            list-style: none;
            padding: 0;
            margin: 1.25rem 0 0;
        }
        
        .check-list li {
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-mint);
            font-size: 0.92rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        
        .check-list li:last-child {
            border-bottom: none;
        }
        
        .check-list li i {
            color: var(--accent-gold);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        
        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
        }
        
        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            transition: all var(--transition-base);
        }
        
        .step-card:hover {
            border-color: var(--border-gold);
            background: rgba(255, 255, 255, 0.06);
        }
        
        .step-number {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(255, 215, 0, 0.25);
            line-height: 1;
            margin-bottom: 0.75rem;
        }
        
        .step-card h3 {
            font-size: 1rem;
            font-weight: 650;
            margin-bottom: 0.5rem;
        }
        
        .step-card p {
            font-size: 0.85rem;
            color: var(--text-mint);
            margin-bottom: 0;
            line-height: 1.6;
        }
        
        /* FAQ */
        .faq-list {
            max-width: 800px;
        }
        
        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        
        .faq-item:hover {
            border-color: var(--border-gold);
        }
        
        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-white);
            user-select: none;
            transition: all var(--transition-fast);
        }
        
        .faq-question:hover {
            color: var(--accent-gold);
        }
        
        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--accent-gold);
            flex-shrink: 0;
        }
        
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow);
        }
        
        .faq-answer-inner {
            padding: 0 22px 18px;
            color: var(--text-mint);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
            border-radius: var(--radius-xl);
            padding: 3rem 2.5rem;
            text-align: center;
            border: 1px solid var(--border-gold);
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .cta-section h2 {
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            margin-bottom: 0.75rem;
        }
        
        .cta-section p {
            color: var(--text-mint);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            font-size: 0.95rem;
        }
        
        /* Footer */
        .site-footer {
            background: #072015;
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 1.5rem;
            margin-top: var(--section-spacing);
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 2.5rem;
        }
        
        .footer-brand .logo {
            margin-bottom: 1rem;
        }
        
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
            max-width: 340px;
        }
        
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-col ul li {
            margin-bottom: 8px;
        }
        
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        
        .footer-col ul li a:hover {
            color: var(--accent-gold);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 0;
        }
        
        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .footer-badge {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            color: var(--text-mint);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        
        .footer-badge i {
            color: var(--accent-gold);
            font-style: normal;
        }
        
        /* FAB */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #1A1A1A, #0D0D0D);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.7;
            transition: all var(--transition-base);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            text-decoration: none;
            animation: fabFloat 3s ease-in-out infinite;
        }
        
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
        }
        
        .fab-left:active {
            transform: scale(0.95) translateY(2px);
        }
        
        .fab-left i {
            font-size: 1.5rem;
            color: var(--accent-gold);
            transition: transform var(--transition-base);
        }
        
        .fab-left:hover i {
            transform: rotate(360deg);
        }
        
        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #FF0040;
            border-radius: 50%;
            border: 2px solid #0D0D0D;
            animation: blink 1.5s ease-in-out infinite;
        }
        
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .info-split {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            
            .footer-col:last-child {
                grid-column: span 3;
            }
        }
        
        @media (max-width: 768px) {
            :root {
                --section-spacing: 3rem;
            }
            
            .header-inner {
                flex-wrap: wrap;
                padding: 10px 0;
            }
            
            .logo {
                flex: 1;
            }
            
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 18px;
                border-radius: 10px;
            }
            
            .logo-text strong {
                font-size: 0.85rem;
            }
            
            .logo-text span {
                font-size: 0.7rem;
            }
            
            .nav-toggle {
                display: flex;
            }
            
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 12px 0 8px;
                order: 10;
            }
            
            .main-nav.open {
                display: flex;
            }
            
            .main-nav a {
                padding: 12px 16px;
                font-size: 0.95rem;
                width: 100%;
            }
            
            .main-nav a.active::after {
                display: none;
            }
            
            .header-actions {
                gap: 6px;
            }
            
            .btn-login, .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            
            .hero-section {
                padding: 2.5rem 0 2rem;
                min-height: auto;
            }
            
            .hero-panel {
                margin-top: 1.5rem;
                padding: 20px;
            }
            
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            
            .btn-primary-hero, .btn-outline-hero {
                width: 100%;
                justify-content: center;
            }
            
            .criteria-grid {
                grid-template-columns: 1fr;
            }
            
            .steps-grid {
                grid-template-columns: 1fr;
            }
            
            .cta-section {
                padding: 2rem 1.25rem;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-col:last-child {
                grid-column: auto;
            }
            
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            
            .fab-left {
                width: 48px;
                height: 48px;
                left: 12px;
                bottom: 16px;
            }
            
            .fab-left i {
                font-size: 1.2rem;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            
            .header-actions .btn-login {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            
            .header-actions .btn-signup {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            
            .hero-title {
                font-size: 1.75rem;
            }
            
            .hero-desc {
                font-size: 0.95rem;
            }
            
            .ranking-item {
                gap: 10px;
            }
            
            .rank-number {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
            
            .criteria-card {
                padding: 18px;
            }
            
            .faq-question {
                padding: 14px 16px;
                font-size: 0.85rem;
            }
            
            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: rgba(18, 18, 30, 0.85);
            --bg-card-hover: rgba(28, 28, 42, 0.95);
            --accent-primary: #CCFF00;
            --accent-secondary: #00F0FF;
            --accent-warning: #FF4655;
            --accent-gold: #FFD700;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6E7478;
            --border-color: rgba(0, 240, 255, 0.18);
            --border-glow: rgba(0, 240, 255, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.15);
            --shadow-accent: 0 0 18px rgba(204, 255, 0, 0.2);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 88px;
            --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-heading: 'Be Vietnam Pro', 'Inter', 'Segoe UI', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-medium: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.04) 0%, transparent 50%),
                linear-gradient(180deg, #0F0C20 0%, #0B1A30 100%);
            background-attachment: fixed;
        }

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

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-medium);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
            background: rgba(15, 12, 32, 0.98);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            min-height: 72px;
            flex-wrap: nowrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            min-width: 0;
        }

        .logo-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .logo-text strong {
            font-family: var(--font-heading);
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.25;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            letter-spacing: 0.01em;
        }

        .logo-text span {
            font-size: 11px;
            color: var(--accent-secondary);
            font-weight: 500;
            letter-spacing: 0.03em;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

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

        .main-nav a {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 10px 14px;
            border-radius: 8px;
            white-space: nowrap;
            position: relative;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }

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

        .main-nav a.active {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(204, 255, 0, 0.6);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 10px;
            padding: 10px 20px;
            font-size: 13px;
            letter-spacing: 0.01em;
            transition: all var(--transition-medium);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-login {
            color: var(--text-primary);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-login:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
        }

        .btn-signup {
            color: #0F0C20;
            background: linear-gradient(135deg, var(--accent-primary), #AAE000);
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204, 255, 0, 0.5);
        }

        .btn-signup:active {
            transform: translateY(0);
        }

        /* Hero Section */
        .hero {
            position: relative;
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
            background-image: 
                linear-gradient(135deg, rgba(15, 12, 32, 0.85) 0%, rgba(11, 26, 48, 0.92) 100%),
                url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(0, 240, 255, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 100px;
            background: rgba(255, 70, 85, 0.15);
            border: 1px solid rgba(255, 70, 85, 0.35);
            color: #FF8A93;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-warning);
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.7); }
        }

        .hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(28px, 4.5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

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

        .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), #AAE000);
            color: #0F0C20;
            font-weight: 700;
            padding: 14px 28px;
            font-size: 14px;
            border-radius: 12px;
            box-shadow: 0 6px 24px rgba(204, 255, 0, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(204, 255, 0, 0.55);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            padding: 14px 28px;
            font-size: 14px;
            border-radius: 12px;
        }

        .btn-outline:hover {
            border-color: var(--accent-secondary);
            color: var(--accent-secondary);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 360px;
        }

        .hero-visual::before {
            content: '';
            position: absolute;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            animation: float-glow 3s ease-in-out infinite;
        }

        @keyframes float-glow {
            0%, 100% { transform: translateY(0) scale(1); }
            50% { transform: translateY(-15px) scale(1.05); }
        }

        .hero-card {
            position: relative;
            z-index: 2;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            width: 100%;
            max-width: 420px;
        }

        .hero-card-image {
            width: 100%;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
            position: relative;
        }

        .hero-card-image img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .hero-card:hover .hero-card-image img {
            transform: scale(1.05);
        }

        .hero-card-image .live-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-warning);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            animation: live-blink 2s ease-in-out infinite;
        }

        @keyframes live-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        .hero-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .hero-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .countdown {
            display: flex;
            gap: 10px;
            margin-top: var(--spacing-sm);
        }

        .countdown-item {
            flex: 1;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 10px 8px;
            text-align: center;
        }

        .countdown-item span {
            display: block;
            font-size: 22px;
            font-weight: 800;
            color: var(--accent-primary);
            line-height: 1.2;
        }

        .countdown-item small {
            font-size: 10px;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        /* Section Common */
        section {
            padding: var(--spacing-xl) 0;
        }

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

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-secondary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: var(--spacing-xs);
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: clamp(24px, 3.5vw, 36px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        /* Warning Grid */
        .warning-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .warning-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: all var(--transition-medium);
            position: relative;
            overflow: hidden;
        }

        .warning-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-warning), var(--accent-secondary));
            opacity: 0;
            transition: opacity var(--transition-medium);
        }

        .warning-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }

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

        .warning-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: var(--spacing-sm);
            background: rgba(255, 70, 85, 0.12);
            border: 1px solid rgba(255, 70, 85, 0.25);
        }

        .warning-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .warning-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Steps Flow */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
            counter-reset: step;
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            position: relative;
            counter-increment: step;
            transition: all var(--transition-medium);
        }

        .step-item:hover {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            color: #0F0C20;
            margin-bottom: var(--spacing-sm);
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Checklist */
        .checklist {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-sm);
            list-style: none;
            padding: 0;
        }

        .checklist li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 12px 16px;
            background: rgba(0, 240, 255, 0.04);
            border-radius: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            transition: all var(--transition-fast);
        }

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

        .checklist li .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(204, 255, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            color: var(--accent-primary);
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* FAQ */
        .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-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-medium);
        }

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

        .faq-item[open] {
            border-color: var(--accent-secondary);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            padding: 18px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-secondary);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

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

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: var(--spacing-xl) 0;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08) 0%, rgba(204, 255, 0, 0.06) 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 60%);
            animation: rotate-slow 20s linear infinite;
        }

        @keyframes rotate-slow {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .cta-box h2 {
            font-family: var(--font-heading);
            font-size: clamp(22px, 3vw, 32px);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 2;
        }

        .cta-box .btn-primary {
            position: relative;
            z-index: 2;
        }

        /* Footer */
        .site-footer {
            background: rgba(11, 26, 48, 0.95);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

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

        .footer-brand .logo {
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

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

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

        .footer-col ul a {
            font-size: 13px;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 11px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 100px;
            padding: 6px 12px;
            white-space: nowrap;
        }

        .footer-badge i {
            font-style: normal;
            font-size: 13px;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: 
                linear-gradient(rgba(15, 12, 32, 0.75), rgba(15, 12, 32, 0.75)),
                linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-secondary);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            cursor: pointer;
            transition: all var(--transition-medium);
            opacity: 0.7;
            animation: fab-breathe 3s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { transform: translateY(0); opacity: 0.7; }
            50% { transform: translateY(-6px); opacity: 1; }
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            animation: none;
        }

        .fab:active {
            transform: scale(0.95);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.4);
        }

        .fab .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-warning);
            border: 2px solid var(--bg-primary);
            animation: fab-dot 1.8s ease-in-out infinite;
        }

        @keyframes fab-dot {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(0.6); opacity: 0.5; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .hero {
                min-height: auto;
                padding: var(--spacing-lg) 0;
            }
            .hero-visual {
                min-height: 300px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper {
                flex-wrap: wrap;
                min-height: auto;
                padding: 10px 0;
            }
            .main-nav {
                order: 3;
                width: 100%;
                gap: 4px;
                padding-bottom: 4px;
            }
            .main-nav a {
                font-size: 12px;
                padding: 8px 10px;
            }
            .nav-actions {
                gap: 6px;
            }
            .btn {
                padding: 8px 14px;
                font-size: 12px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .countdown-item span {
                font-size: 18px;
            }
            .warning-grid,
            .steps-flow,
            .checklist {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
            }
            .fab {
                width: 48px;
                height: 48px;
                font-size: 20px;
                bottom: 80px;
                left: 12px;
            }
        }

        @media (max-width: 520px) {
            .logo-text strong {
                font-size: 13px;
            }
            .logo-text span {
                font-size: 10px;
            }
            .logo-icon {
                width: 38px;
                height: 38px;
                font-size: 18px;
            }
            .hero {
                padding: var(--spacing-md) 0;
            }
            .hero h1 {
                font-size: 22px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .hero-card-image img {
                height: 150px;
            }
            .section-header h2 {
                font-size: 20px;
            }
            .warning-card,
            .step-item {
                padding: var(--spacing-sm);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0B0B0B;
            --secondary-bg: #161616;
            --card-bg: #1E1E1E;
            --accent-orange: #FF4500;
            --accent-fire: #FF0000;
            --accent-gold: #FFB800;
            --text-white: #FFFFFF;
            --text-gray: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2A2A2A;
            --border-accent: #FF4500;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.6);
            --shadow-orange: 0 8px 32px rgba(255,69,0,0.25);
            --font-primary: 'Be Vietnam Pro', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--primary-bg);
            color: var(--text-gray);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

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

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

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(11,11,11,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0,0,0,0.5);
            padding: 10px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-fire));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: white;
            box-shadow: var(--shadow-orange);
            flex-shrink: 0;
        }

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

        .logo-text strong {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            white-space: nowrap;
        }

        .logo-text span {
            font-size: 12px;
            color: var(--accent-orange);
            font-weight: 500;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            background: rgba(255,69,0,0.1);
            color: var(--text-white);
        }

        .main-nav a.active {
            background: var(--accent-orange);
            color: var(--text-white);
            font-weight: 600;
            box-shadow: var(--shadow-orange);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            background: rgba(255,69,0,0.05);
        }

        .btn-signup {
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-fire));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: var(--shadow-orange);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255,69,0,0.4);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text-white);
            font-size: 24px;
            z-index: 101;
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 80px;
            background: var(--primary-bg);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255,69,0,0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(255,0,0,0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-wrapper {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,69,0,0.1);
            color: var(--accent-orange);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(255,69,0,0.2);
        }

        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero-title .highlight {
            color: var(--accent-orange);
            position: relative;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .btn-primary {
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-fire));
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-orange);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 48px rgba(255,69,0,0.5);
            color: var(--text-white);
        }

        .btn-secondary {
            padding: 16px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: 2px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            background: rgba(255,69,0,0.05);
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

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

        .hero-stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-orange);
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual-card {
            background: var(--secondary-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .hero-visual-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-fire), var(--accent-gold));
        }

        .hero-visual-card img {
            border-radius: var(--radius-md);
            margin-bottom: 24px;
        }

        .hero-visual-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,69,0,0.1);
            color: var(--accent-orange);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .hero-visual-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .hero-visual-desc {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* Section Common */
        .section {
            padding: 80px 0;
        }

        .section-header {
            margin-bottom: 48px;
            text-align: left;
        }

        .section-label {
            display: inline-block;
            color: var(--accent-orange);
            font-size: 14px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-gray);
            line-height: 1.7;
            max-width: 680px;
        }

        /* Detection Steps */
        .detection-section {
            background: var(--secondary-bg);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .step-number {
            font-size: 48px;
            font-weight: 800;
            color: rgba(255,69,0,0.15);
            position: absolute;
            top: 20px;
            right: 20px;
            line-height: 1;
        }

        .step-icon {
            font-size: 32px;
            margin-bottom: 16px;
        }

        .step-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* Warning Signs */
        .signs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .sign-item {
            background: var(--card-bg);
            border-left: 4px solid var(--accent-fire);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }

        .sign-item:hover {
            background: #222;
            border-left-color: var(--accent-orange);
        }

        .sign-icon {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .sign-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .sign-desc {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* Checklist Section */
        .checklist-section {
            background: linear-gradient(180deg, var(--primary-bg), var(--secondary-bg));
        }

        .checklist-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .checklist-box {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
        }

        .checklist-box h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .checklist-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .checklist-check {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(255,69,0,0.15);
            color: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .checklist-text {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.5;
        }

        /* Red Flags Detailed */
        .flags-section {
            background: var(--primary-bg);
        }

        .flags-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .flag-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--secondary-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }

        .flag-item:hover {
            border-color: rgba(255,69,0,0.4);
            background: #1A1A1A;
        }

        .flag-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-fire));
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        .flag-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .flag-content p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

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

        .faq-list {
            max-width: 800px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(255,69,0,0.3);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
        }

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

        .faq-question .faq-icon {
            font-size: 20px;
            color: var(--accent-orange);
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-fire));
            padding: 80px 0;
        }

        .cta-wrapper {
            text-align: left;
            max-width: 600px;
        }

        .cta-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .cta-desc {
            font-size: 18px;
            color: rgba(255,255,255,0.9);
            line-height: 1.6;
            margin-bottom: 32px;
        }

        .cta-btn {
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-orange);
            background: var(--text-white);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0,0,0,0.3);
        }

        /* Footer */
        .site-footer {
            background: #080808;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

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

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-gray);
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--text-gray);
            background: var(--secondary-bg);
            padding: 6px 14px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11,11,11,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(255,69,0,0.4);
            animation: fabPulse 3s ease-in-out infinite;
            opacity: 0.6;
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(255,69,0,0.7);
        }

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

        .fab-icon {
            font-size: 24px;
            color: var(--accent-orange);
        }

        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: var(--accent-fire);
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: blink 1.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 20px rgba(255,69,0,0.4); }
            50% { box-shadow: 0 0 35px rgba(255,69,0,0.7); }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-title {
                font-size: 40px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .signs-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .checklist-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11,11,11,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border-color);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                text-align: center;
                padding: 14px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 13px;
            }
            .hero-section {
                padding: 120px 0 60px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stats {
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .signs-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .fab-support {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
            .fab-icon {
                font-size: 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 24px;
            }
            .hero-stat-number {
                font-size: 22px;
            }
        }