/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 240, 255, 0.25);
            --border-neon: rgba(0, 240, 255, 0.6);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.4);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-silver);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover,
        a:focus {
            color: #66F5FF;
            outline: none;
        }

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

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

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

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

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.18);
            transition: background var(--transition-smooth);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.7rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.7));
        }

        .logo span {
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .main-nav li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .main-nav li a:hover,
        .main-nav li a:focus {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.25);
        }

        .main-nav li a.active {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.15);
            border-color: var(--border-neon);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 10px 20px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-white);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
        }

        .btn-signup {
            padding: 10px 22px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            color: #08090F;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.4);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 82, 255, 0.6);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 8px;
            padding: 8px 12px;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
        }

        /* Hero - Bento Style */
        .hero-section {
            position: relative;
            padding: 60px 0 50px;
            background: radial-gradient(ellipse at 20% 20%, rgba(0, 82, 255, 0.25), transparent 60%),
                        radial-gradient(ellipse at 80% 80%, rgba(0, 240, 255, 0.15), transparent 55%),
                        var(--bg-primary);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 240, 255, 0.05) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(0, 240, 255, 0.05) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
        }

        .hero-bento {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 32px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.5rem);
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }

        .hero-content h1 .highlight {
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p.hero-desc {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-silver);
            margin-bottom: 28px;
            max-width: 600px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 40px;
            font-weight: 800;
            font-size: 1rem;
            color: #08090F;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 6px 24px rgba(0, 82, 255, 0.5);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 240, 255, 0.6);
            color: #08090F;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 26px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            background: transparent;
            border: 1.5px solid rgba(0, 240, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            color: var(--text-white);
        }

        .hero-bento-visual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .bento-card {
            background: rgba(17, 24, 39, 0.85);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-smooth);
            backdrop-filter: blur(8px);
        }

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

        .bento-card .bento-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 10px;
        }

        .bento-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .bento-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .bento-wide {
            grid-column: span 2;
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.25), rgba(0, 240, 255, 0.12));
            border: 1px solid rgba(0, 240, 255, 0.35);
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
        }

        .bento-wide .bento-icon {
            font-size: 2.5rem;
            margin-bottom: 0;
        }

        .bento-wide h3 {
            font-size: 1.15rem;
            margin-bottom: 2px;
        }

        .bento-wide p {
            font-size: 0.9rem;
        }

        /* Section Common */
        .section {
            padding: 60px 0;
        }

        .section-header {
            margin-bottom: 36px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .section-header h2 {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 8px;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.65;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            margin-bottom: 10px;
        }

        /* Promotion Ladder */
        .promo-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .promo-ladder {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

        .promo-step {
            position: relative;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            overflow: hidden;
        }

        .promo-step::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, #00F0FF, #0052FF);
            opacity: 0.6;
        }

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

        .promo-step .step-number {
            font-size: 2.2rem;
            font-weight: 900;
            color: rgba(0, 240, 255, 0.3);
            line-height: 1;
            margin-bottom: 12px;
        }

        .promo-step h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .promo-step p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .promo-step .promo-value {
            display: inline-block;
            margin-top: 14px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.9rem;
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        /* Package Comparison */
        .compare-section {
            background: var(--bg-primary);
        }

        .compare-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .compare-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .compare-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
        }

        .compare-card.featured {
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.35);
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.15), var(--bg-card));
        }

        .compare-card .card-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            padding: 4px 14px;
            border-radius: 20px;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            color: #08090F;
            font-weight: 800;
            font-size: 0.75rem;
            letter-spacing: 0.05em;
        }

        .compare-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .compare-card .price {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .compare-card .price span {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .compare-card ul {
            list-style: none;
            margin: 0 0 20px;
        }

        .compare-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.9rem;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-card ul li i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        .btn-compare {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: 30px;
            text-align: center;
            font-weight: 700;
            font-size: 0.95rem;
            color: #08090F;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .btn-compare:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 240, 255, 0.5);
            color: #08090F;
        }

        /* Guarantee Strip */
        .guarantee-section {
            background: var(--bg-secondary);
            padding: 40px 0;
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .guarantee-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .guarantee-item:hover {
            background: rgba(0, 240, 255, 0.06);
        }

        .guarantee-item i {
            font-size: 1.8rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .guarantee-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 2px;
        }

        .guarantee-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Info List */
        .info-section {
            background: var(--bg-primary);
        }

        .info-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
            align-items: start;
        }

        .info-main {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .info-list-item {
            display: flex;
            gap: 14px;
            padding: 18px 20px;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }

        .info-list-item:hover {
            border-color: rgba(0, 240, 255, 0.4);
            background: rgba(17, 24, 39, 0.9);
        }

        .info-list-item .info-index {
            font-size: 1.2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            flex-shrink: 0;
            width: 32px;
        }

        .info-list-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .info-list-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        .info-sidebar {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .info-sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

        .info-sidebar .sidebar-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-silver);
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition-fast);
        }

        .info-sidebar .sidebar-link:hover {
            background: rgba(0, 240, 255, 0.08);
            color: var(--text-white);
        }

        .info-sidebar .sidebar-link i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        /* Safety System */
        .safety-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
        }

        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .safety-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-smooth);
            text-align: left;
        }

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

        .safety-card i {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 14px;
            display: block;
        }

        .safety-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .safety-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* Hot List */
        .hotlist-section {
            background: var(--bg-primary);
        }

        .hotlist-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .hotlist-card {
            display: flex;
            gap: 14px;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 18px;
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .hotlist-card:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card);
        }

        .hotlist-card .rank {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent-cyan);
            flex-shrink: 0;
            line-height: 1;
        }

        .hotlist-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .hotlist-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .hotlist-card .btn-mini {
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            color: #08090F;
            background: var(--accent-cyan);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .hotlist-card .btn-mini:hover {
            background: #66F5FF;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
        }

        /* CTA Section */
        .cta-section {
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.3), transparent 70%), var(--bg-primary);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            text-align: center;
            padding: 70px 0;
        }

        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

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

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 850px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.35);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

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

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

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

        .faq-answer p {
            padding: 0 20px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 50px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand h3 i {
            color: var(--accent-cyan);
        }

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

        .footer-links h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }

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

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

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

        .footer-links 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: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

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

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

        .footer-badges span {
            font-size: 0.8rem;
            color: var(--text-muted);
            padding: 6px 12px;
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-badges i {
            color: var(--accent-cyan);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 24px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.7), rgba(8, 9, 15, 0.7)), linear-gradient(135deg, #00F0FF, #0052FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.6;
            transition: all var(--transition-smooth);
            animation: fabPulse 2.5s ease-in-out infinite;
        }

        .fab-left i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.8));
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.8);
        }

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

        .fab-left .notification-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid var(--bg-primary);
            animation: blink 1.2s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% {
                opacity: 0.6;
            }
            50% {
                opacity: 0.85;
            }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-bento {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

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

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

        @media (max-width: 768px) {
            .site-header .container {
                height: 64px;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                flex-direction: column;
                padding: 16px 20px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                gap: 4px;
            }

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

            .main-nav li a {
                width: 100%;
                padding: 12px 16px;
            }

            .nav-toggle {
                display: block;
            }

            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }

            .hero-section {
                padding: 40px 0 35px;
            }

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

            .bento-wide {
                grid-column: span 1;
                flex-direction: column;
                text-align: center;
            }

            .section {
                padding: 40px 0;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

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

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

            .fab-left {
                width: 48px;
                height: 48px;
                left: 14px;
                bottom: 16px;
            }

            .fab-left i {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

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

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

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

            .promo-ladder {
                grid-template-columns: 1fr;
            }

            .guarantee-strip {
                grid-template-columns: 1fr;
            }

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

            .hotlist-card {
                flex-direction: column;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B3C25;
            --secondary-bg: #062315;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-white: #FFFDF0;
            --text-light: #C5E2D2;
            --text-muted: #8FBFA6;
            --border-gold: rgba(255, 204, 0, 0.35);
            --card-bg: rgba(255, 255, 255, 0.05);
            --card-hover: rgba(255, 255, 255, 0.1);
            --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-gold: 0 4px 20px rgba(255, 204, 0, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --font-base: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-base);
            background: linear-gradient(180deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-gold);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-gold);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px rgba(255, 204, 0, 0.6));
        }

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

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

        .main-nav a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 0.9rem;
        }

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

        .main-nav a.active {
            color: var(--secondary-bg);
            background: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            color: var(--text-white);
            padding: 0.55rem 1.2rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 700;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: var(--secondary-bg);
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 800;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 204, 0, 0.45);
            background: linear-gradient(135deg, #FFD900, #FFC400);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: var(--shadow-gold);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 0.5rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-gold);
            transition: var(--transition);
        }

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

        /* Hero Section */
        .hero {
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
            background-image: linear-gradient(135deg, rgba(6, 35, 21, 0.92), rgba(11, 60, 37, 0.95)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid var(--border-gold);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(255, 204, 0, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3rem;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 204, 0, 0.15);
            color: var(--accent-gold);
            padding: 0.45rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            border: 1px solid var(--border-gold);
            margin-bottom: 1.5rem;
        }

        .hero-badge i {
            font-size: 0.8rem;
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            color: var(--text-white);
            margin-bottom: 1.5rem;
            text-align: left;
        }

        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent-gold), #FFE066);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: var(--accent-gold);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 550px;
            text-align: left;
        }

        .hero-cta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: var(--secondary-bg);
            padding: 0.85rem 1.8rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 800;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255, 204, 0, 0.5);
            color: var(--secondary-bg);
            background: linear-gradient(135deg, #FFE066, #FFD700);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-gold);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            padding: 0.85rem 1.8rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            transform: translateY(-3px);
        }

        .hero-trust {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            align-items: center;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
        }

        .trust-item i {
            color: var(--accent-lime);
        }

        .hero-visual {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-soft);
            position: relative;
            overflow: hidden;
        }

        .hero-visual img {
            border-radius: var(--radius-md);
            width: 100%;
            height: auto;
            object-fit: cover;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
        }

        .hero-stat-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .hero-stat {
            text-align: center;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-stat strong {
            display: block;
            font-size: 1.4rem;
            font-weight: 900;
            color: var(--accent-gold);
        }

        .hero-stat span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* Section Styles */
        .section {
            padding: 4rem 0;
        }

        .section-header {
            margin-bottom: 2.5rem;
            text-align: left;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.5px;
            margin-bottom: 0.75rem;
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.7;
        }

        /* Ranking List */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .rank-card {
            display: grid;
            grid-template-columns: auto 80px 1fr auto auto;
            gap: 1.25rem;
            align-items: center;
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .rank-card:hover {
            background: var(--card-hover);
            border-color: var(--border-gold);
            transform: translateX(6px);
            box-shadow: var(--shadow-soft);
        }

        .rank-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--text-muted);
            min-width: 45px;
            text-align: center;
        }

        .rank-card:nth-child(1) .rank-number {
            color: var(--accent-gold);
            text-shadow: 0 0 15px rgba(255, 204, 0, 0.6);
        }

        .rank-card:nth-child(2) .rank-number {
            color: #E8E8E8;
            text-shadow: 0 0 12px rgba(232, 232, 232, 0.5);
        }

        .rank-card:nth-child(3) .rank-number {
            color: #CD7F32;
            text-shadow: 0 0 12px rgba(205, 127, 50, 0.5);
        }

        .rank-card img {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            border: 2px solid var(--border-gold);
        }

        .rank-info h3 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.35rem;
        }

        .rank-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        .rank-meta {
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
            align-items: flex-end;
        }

        .rank-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: var(--text-light);
            font-weight: 600;
        }

        .rank-meta i {
            color: var(--accent-lime);
        }

        .rank-btn {
            background: rgba(255, 204, 0, 0.15);
            color: var(--accent-gold);
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            border: 1px solid var(--border-gold);
            transition: var(--transition);
            white-space: nowrap;
        }

        .rank-btn:hover {
            background: var(--accent-gold);
            color: var(--secondary-bg);
            box-shadow: var(--shadow-gold);
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.5rem;
        }

        .feature-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            transition: var(--transition);
            text-align: left;
        }

        .feature-item:hover {
            background: var(--card-hover);
            border-color: var(--border-gold);
            transform: translateY(-5px);
            box-shadow: var(--shadow-soft);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: rgba(255, 204, 0, 0.15);
            border-radius: 50%;
            color: var(--accent-gold);
            font-size: 1.3rem;
            margin-bottom: 1.25rem;
            border: 1px solid var(--border-gold);
        }

        .feature-item h3 {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.75rem;
        }

        .feature-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* Process Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }

        .process-step {
            text-align: left;
            position: relative;
            padding: 1.5rem;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent-gold);
            color: var(--secondary-bg);
            font-weight: 900;
            font-size: 1rem;
            border-radius: 50%;
            margin-bottom: 1rem;
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            background: transparent;
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question i {
            transition: var(--transition);
            color: var(--accent-gold);
            font-size: 0.9rem;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 1.5rem;
        }

        .faq-answer.open {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(255, 204, 0, 0.12), rgba(50, 205, 50, 0.08));
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 50%;
            height: 220%;
            background: radial-gradient(ellipse at center, rgba(255, 204, 0, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 1rem;
            position: relative;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-light);
            margin-bottom: 2rem;
            position: relative;
        }

        .cta-section .btn-primary {
            position: relative;
            font-size: 1.05rem;
            padding: 1rem 2.2rem;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-gold);
            padding: 4rem 0 2rem;
            margin-top: 4rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 1rem 0;
        }

        .footer-badges {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
        }

        .badge-18,
        .badge-license {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 800;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            background: rgba(255, 204, 0, 0.08);
        }

        .badge-18 {
            background: #D32F2F;
            color: white;
            border-color: #D32F2F;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 1rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 1.25rem;
        }

        .footer-links a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
            transition: var(--transition);
        }

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

        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0.6rem;
        }

        .footer-contact i {
            color: var(--accent-gold);
            width: 20px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #1A1A1A, #2D2D2D);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            box-shadow: 0 4px 20px rgba(255, 204, 0, 0.3);
            opacity: 0.7;
            transition: var(--transition);
            animation: floatBreath 3s ease-in-out infinite;
        }

        .fab-float i {
            font-size: 1.3rem;
            color: var(--accent-gold);
            transition: var(--transition);
        }

        .fab-float::after {
            content: '';
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #FF0040;
            border-radius: 50%;
            border: 2px solid #1A1A1A;
            animation: blinkDot 1.5s ease-in-out infinite;
        }

        .fab-float:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 204, 0, 0.5);
        }

        .fab-float:hover i {
            transform: rotate(360deg);
        }

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

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

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

            .rank-card {
                grid-template-columns: auto 70px 1fr auto;
                gap: 1rem;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: auto;
                flex-wrap: wrap;
                padding: 0.75rem 1.5rem;
            }

            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.5rem;
                padding: 1rem 0;
                order: 3;
            }

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

            .main-nav a {
                width: 100%;
                padding: 0.8rem 1rem;
            }

            .nav-toggle {
                display: block;
            }

            .hero {
                padding: 3rem 0;
            }

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

            .hero-subtitle {
                font-size: 1rem;
            }

            .section {
                padding: 2.5rem 0;
            }

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

            .rank-card {
                grid-template-columns: auto 60px 1fr;
                gap: 0.75rem;
                padding: 1rem;
            }

            .rank-card img {
                width: 60px;
                height: 60px;
            }

            .rank-meta {
                grid-column: 1 / -1;
                flex-direction: row;
                justify-content: flex-start;
                gap: 1rem;
                flex-wrap: wrap;
            }

            .rank-btn {
                grid-column: 1 / -1;
                width: 100%;
                text-align: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .cta-section {
                padding: 2rem 1.5rem;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }

            .logo {
                font-size: 1.1rem;
            }

            .logo i {
                font-size: 1.2rem;
            }

            .btn-login,
            .btn-signup {
                padding: 0.45rem 0.9rem;
                font-size: 0.8rem;
            }

            .hero h1 {
                font-size: 1.7rem;
            }

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

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 0.75rem 1.5rem;
                font-size: 0.9rem;
            }

            .hero-trust {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }

            .hero-stat-row {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .rank-card {
                grid-template-columns: auto 50px 1fr;
            }

            .rank-card img {
                width: 50px;
                height: 50px;
            }

            .rank-number {
                font-size: 1.4rem;
                min-width: 35px;
            }

            .rank-info h3 {
                font-size: 0.95rem;
            }

            .rank-info p {
                font-size: 0.75rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #101624;
            --bg-elevated: #161E33;
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-gradient: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #7B8794;
            --border-subtle: rgba(0, 240, 255, 0.12);
            --border-neon: rgba(0, 240, 255, 0.35);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.2);
            --shadow-elevated: 0 12px 28px rgba(0, 0, 0, 0.45);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-body: '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-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;
            --spacing-3xl: 4rem;
            --spacing-section: 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-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

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

        a:hover,
        a:focus {
            color: var(--accent-primary);
            outline: none;
        }

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

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

        .container {
            width: min(1200px, 92%);
            margin: 0 auto;
            padding: 0 1rem;
        }

        /* Header */
        .site-header {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
            background: rgba(8, 9, 15, 0.95);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.65rem;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .logo i {
            color: var(--accent-secondary);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5));
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }

        .main-nav a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }

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

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login,
        .btn-signup {
            padding: 0.55rem 1.35rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.875rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.35);
        }

        .btn-signup {
            color: #fff;
            background: var(--accent-gradient);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.35);
        }

        .btn-signup:hover {
            box-shadow: 0 8px 24px rgba(0, 82, 255, 0.5);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 0.5rem;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            transition: background var(--transition-fast);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* Article Hero */
        .article-hero {
            padding: calc(72px + 3rem) 0 2.5rem;
            position: relative;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(0, 82, 255, 0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
                var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-secondary);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .breadcrumb a:hover {
            color: var(--text-primary);
        }

        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.5;
        }

        .article-hero-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-secondary);
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid var(--border-neon);
        }

        .article-date {
            color: var(--text-muted);
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-hero h1 {
            font-family: var(--font-heading);
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: var(--text-primary);
            margin-bottom: 1.25rem;
            text-wrap: balance;
        }

        .article-excerpt {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 780px;
            line-height: 1.7;
            border-left: 3px solid var(--accent-secondary);
            padding-left: 1.5rem;
            margin-top: 0.5rem;
        }

        /* Article Body */
        .article-body {
            padding: 3rem 0 5rem;
            background: var(--bg-primary);
        }

        .article-body .container {
            max-width: 860px;
        }

        .article-content {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 2.5rem 0 1rem;
            letter-spacing: -0.02em;
            padding-top: 0.5rem;
        }

        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 2rem 0 0.85rem;
        }

        .article-content p {
            margin-bottom: 1.25rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5rem 1.5rem;
            padding-left: 0.5rem;
        }

        .article-content li {
            margin-bottom: 0.6rem;
            padding-left: 0.35rem;
        }

        .article-content strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        .article-content a {
            color: var(--accent-secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-content blockquote {
            background: var(--bg-card);
            border-left: 4px solid var(--accent-secondary);
            padding: 1.25rem 1.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 2rem 0;
            color: var(--text-primary);
            font-style: italic;
            box-shadow: var(--shadow-elevated);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 2rem 0;
            box-shadow: var(--shadow-elevated);
        }

        .article-not-found {
            text-align: center;
            padding: 4rem 1.5rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .article-not-found h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 2rem;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: 999px;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 600;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.3);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 82, 255, 0.45);
            color: #fff;
        }

        /* CTA Section */
        .article-cta {
            padding: 4rem 0;
            background:
                radial-gradient(ellipse at 50% 50%, rgba(0, 82, 255, 0.15) 0%, transparent 70%),
                var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
        }

        .article-cta .container {
            text-align: center;
        }

        .article-cta h2 {
            font-family: var(--font-heading);
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .article-cta p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 2rem;
            font-size: 1.05rem;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2rem;
            border-radius: 999px;
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-fast);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
        }

        .btn-primary-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(0, 82, 255, 0.55);
            color: #fff;
        }

        .btn-secondary-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2rem;
            border-radius: 999px;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .btn-secondary-cta:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.4);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 999px;
            background: rgba(8, 9, 15, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image:
                linear-gradient(rgba(8, 9, 15, 0.75), rgba(8, 9, 15, 0.75)),
                linear-gradient(135deg, #0052FF, #00F0FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.25rem;
            opacity: 0.65;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            animation: fabBreath 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.55);
        }

        .fab-left:active {
            transform: scale(0.95);
            border-color: #FF007F;
            box-shadow: 0 0 30px rgba(255, 0, 127, 0.5);
        }

        .fab-left::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF007F;
            border: 2px solid var(--bg-primary);
            animation: fabBlink 1.5s ease-in-out infinite;
        }

        @keyframes fabBreath {
            0%,
            100% {
                opacity: 0.65;
            }
            50% {
                opacity: 0.9;
            }
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 1.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand .logo {
            font-size: 1.15rem;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.875rem;
            line-height: 1.7;
            margin: 1rem 0;
        }

        .footer-badges {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .badge-18,
        .badge-license {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.9rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 700;
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }

        .badge-18 {
            background: rgba(255, 0, 0, 0.15);
            color: #FF6B6B;
            border-color: rgba(255, 0, 0, 0.3);
        }

        .badge-license i {
            color: var(--accent-secondary);
        }

        .footer-links h4,
        .footer-contact h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.875rem;
            transition: color var(--transition-fast);
        }

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

        .footer-contact p {
            color: var(--text-muted);
            font-size: 0.875rem;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-contact i {
            color: var(--accent-secondary);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 1.5rem;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 0.35rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                padding: 1rem;
                gap: 0.5rem;
                border-bottom: 1px solid var(--border-subtle);
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                z-index: 99;
            }

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

            .main-nav a {
                padding: 0.85rem 1rem;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }

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

            .btn-login,
            .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }

            .article-hero h1 {
                font-size: clamp(1.7rem, 6vw, 2.4rem);
            }

            .article-excerpt {
                font-size: 1rem;
                padding-left: 1rem;
            }

            .article-content {
                font-size: 0.98rem;
            }

            .article-content h2 {
                font-size: 1.5rem;
            }

            .article-content h3 {
                font-size: 1.25rem;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                height: 64px;
            }

            .main-nav {
                top: 64px;
            }

            .logo {
                font-size: 1.05rem;
                gap: 0.5rem;
            }

            .logo i {
                font-size: 1.25rem;
            }

            .btn-login {
                padding: 0.45rem 0.85rem;
                font-size: 0.75rem;
            }

            .btn-signup {
                padding: 0.45rem 0.85rem;
                font-size: 0.75rem;
            }

            .header-actions {
                gap: 0.5rem;
            }

            .article-hero {
                padding: calc(64px + 2rem) 0 2rem;
            }

            .article-hero h1 {
                font-size: 1.6rem;
                line-height: 1.25;
            }

            .article-excerpt {
                font-size: 0.95rem;
            }

            .article-body {
                padding: 2rem 0 3.5rem;
            }

            .article-content {
                font-size: 0.95rem;
                line-height: 1.7;
            }

            .article-content h2 {
                font-size: 1.35rem;
                margin-top: 2rem;
            }

            .article-content h3 {
                font-size: 1.15rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }

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

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

            .fab-left {
                width: 46px;
                height: 46px;
                left: 0.75rem;
                bottom: 4.5rem;
                font-size: 1.1rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #0A2E1C;
            --primary-bg-2: #123E25;
            --primary-bg-3: #0D3520;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A8C9BB;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-light: rgba(255, 215, 0, 0.15);
            --shadow-gold: 0 8px 32px rgba(255, 215, 0, 0.12);
            --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-main: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3.5rem;
            --spacing-xl: 5rem;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            padding-top: 0.75rem;
            padding-bottom: 0.75rem;
            flex-wrap: wrap;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--accent-gold);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
            filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.4));
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text-mint);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .main-nav a i {
            font-size: 0.85rem;
            opacity: 0.8;
        }

        .main-nav a:hover,
        .main-nav a:focus-visible {
            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);
            box-shadow: inset 0 0 0 1px var(--border-gold);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-login,
        .btn-signup {
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

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

        .btn-login:hover {
            color: var(--accent-gold);
            border-color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.05);
        }

        .btn-signup {
            color: #0A2E1C;
            background: linear-gradient(135deg, #FFE066 0%, #FFD700 50%, #E6B800 100%);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.35);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
        }

        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text-white);
            padding: 0.4rem;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background-image: linear-gradient(rgba(10, 46, 28, 0.75), rgba(10, 46, 28, 0.92)), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            padding: 4.5rem 0 3.5rem;
            border-bottom: 1px solid var(--border-light);
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 2.5rem;
            align-items: center;
        }

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

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--accent-gold);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 1.2rem;
        }

        .hero-eyebrow i {
            font-size: 0.85rem;
        }

        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-white);
            margin: 0 0 1rem;
            letter-spacing: -0.02em;
        }

        .hero-text h1 .highlight {
            background: linear-gradient(135deg, #FFE066 0%, #FFD700 40%, #FFB800 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            font-size: 1.1rem;
            color: var(--text-mint);
            max-width: 560px;
            line-height: 1.65;
            margin-bottom: 1.8rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }

        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 800;
            font-size: 1rem;
            color: #0A2E1C;
            background: linear-gradient(135deg, #FFE066 0%, #FFD700 50%, #E6B800 100%);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.4);
            letter-spacing: 0.02em;
        }

        .btn-primary-hero:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 215, 0, 0.55);
        }

        .btn-secondary-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-mint);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-secondary-hero:hover {
            color: var(--accent-gold);
            border-color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-gold);
        }

        .hero-visual .badge-float {
            position: absolute;
            bottom: 1.2rem;
            left: 1.2rem;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(10px);
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-gold);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            color: var(--accent-gold);
            font-size: 0.9rem;
        }

        /* Main Sections */
        main {
            padding: 0;
        }

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

        .section-block.alt-bg {
            background: var(--primary-bg-2);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1.5rem;
            margin-bottom: 2.2rem;
            flex-wrap: wrap;
        }

        .section-title-group {
            max-width: 680px;
            text-align: left;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }

        .section-title-group h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            margin: 0 0 0.6rem;
            line-height: 1.25;
        }

        .section-title-group p {
            color: var(--text-mint);
            font-size: 1rem;
            margin: 0;
            line-height: 1.65;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .feature-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            transition: all var(--transition);
            text-align: left;
        }

        .feature-item:hover {
            border-color: var(--border-gold);
            background: rgba(255, 215, 0, 0.05);
            transform: translateY(-4px);
            box-shadow: var(--shadow-gold);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 215, 0, 0.12);
            border-radius: 12px;
            color: var(--accent-gold);
            font-size: 1.4rem;
            margin-bottom: 1rem;
        }

        .feature-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0 0 0.5rem;
        }

        .feature-item p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
            margin: 0;
        }

        /* Ranking Table */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .rank-item {
            display: grid;
            grid-template-columns: 64px 1fr auto;
            gap: 1.2rem;
            align-items: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.4rem;
            transition: all var(--transition);
        }

        .rank-item:hover {
            border-color: var(--border-gold);
            background: rgba(255, 215, 0, 0.05);
            transform: translateX(4px);
        }

        .rank-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-gold);
            text-align: center;
            line-height: 1;
        }

        .rank-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0 0 0.3rem;
        }

        .rank-info p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0 0 0.4rem;
            line-height: 1.5;
        }

        .rank-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
        }

        .tag-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            border: 1px solid var(--border-gold);
        }

        .tag-sm.hot {
            background: rgba(211, 47, 47, 0.2);
            border-color: rgba(211, 47, 47, 0.5);
            color: #FF6B6B;
        }

        .rank-cta {
            padding: 0.6rem 1.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            color: #0A2E1C;
            background: linear-gradient(135deg, #FFE066 0%, #FFD700 100%);
            white-space: nowrap;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
        }

        .rank-cta:hover {
            box-shadow: 0 6px 18px rgba(255, 215, 0, 0.5);
            transform: translateY(-1px);
        }

        /* Comparison Table */
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            background: rgba(255, 255, 255, 0.03);
        }

        .comparison-table {
            width: 100%;
            min-width: 720px;
            border-collapse: collapse;
            font-size: 0.9rem;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 0.9rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-mint);
        }

        .comparison-table th {
            background: rgba(255, 215, 0, 0.08);
            font-weight: 700;
            color: var(--accent-gold);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

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

        .comparison-table td:first-child {
            font-weight: 700;
            color: var(--text-white);
        }

        /* Process Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .step-item {
            text-align: left;
            position: relative;
            padding-top: 0.5rem;
        }

        .step-dot {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            border-radius: 50%;
            color: var(--accent-gold);
            font-weight: 900;
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
        }

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

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.55;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--text-white);
            text-align: left;
            background: transparent;
            cursor: pointer;
        }

        .faq-question i {
            color: var(--accent-gold);
            font-size: 0.9rem;
            transition: transform var(--transition);
        }

        .faq-answer {
            padding: 0 1.4rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.65;
            display: none;
        }

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

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #123E25 0%, #0A2E1C 50%, #0D3520 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(255, 215, 0, 0.06), transparent 50%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 900;
            color: var(--text-white);
            margin: 0 0 0.8rem;
            position: relative;
        }

        .cta-section p {
            color: var(--text-mint);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 1.8rem;
            line-height: 1.65;
            position: relative;
        }

        /* Footer */
        .site-footer {
            background: #081F14;
            border-top: 1px solid var(--border-gold);
            padding: 3rem 0 1.5rem;
            margin-top: var(--spacing-lg);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-brand .logo {
            margin-bottom: 0.8rem;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
            margin: 0 0 1.2rem;
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }

        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent-red);
            color: white;
            font-weight: 900;
            font-size: 0.9rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .badge-license {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 0.8rem;
            font-weight: 700;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 0.95rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin: 0 0 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .footer-links a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            transition: color var(--transition);
        }

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

        .footer-contact p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin: 0 0 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-contact i {
            color: var(--accent-gold);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 1.2rem;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
            margin: 0 0 0.4rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(10, 46, 28, 0.9);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.3rem;
            opacity: 0.7;
            transition: all var(--transition);
            animation: floatBreath 3s ease-in-out infinite;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
        }

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-text h1 {
                font-size: 2.3rem;
            }
            .feature-grid {
                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) {
            .site-header .container {
                flex-wrap: nowrap;
            }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: rgba(10, 46, 28, 0.98);
                backdrop-filter: blur(16px);
                border-bottom: 1px solid var(--border-gold);
                padding: 1rem 1.5rem;
                gap: 0.3rem;
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.8rem 1rem;
                border-radius: 8px;
                font-size: 1rem;
            }
            .nav-toggle {
                display: block;
            }
            .header-actions {
                gap: 0.4rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.45rem 0.9rem;
                font-size: 0.82rem;
            }
            .hero-section {
                padding: 3rem 0 2.5rem;
            }
            .hero-text h1 {
                font-size: 1.9rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .rank-item {
                grid-template-columns: 48px 1fr;
                gap: 0.8rem;
            }
            .rank-cta {
                grid-column: 1 / -1;
                justify-self: start;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-title-group h2 {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 2.2rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                left: 0.8rem;
                bottom: 5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .hero-text h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-primary-hero,
            .btn-secondary-hero {
                width: 100%;
                justify-content: center;
            }
            .section-block {
                padding: 2.2rem 0;
            }
            .section-title-group h2 {
                font-size: 1.4rem;
            }
            .rank-number {
                font-size: 1.4rem;
            }
            .rank-item {
                padding: 1rem;
            }
        }