/* roulang page: index */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-ember: #FF6347;
            --accent-gold: #FF9F00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-hover: 0 8px 30px rgba(255, 69, 0, 0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-secondary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--accent-lava); font-size: 1.5rem; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }
        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a:hover::after, .nav-links a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }
        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 2px 12px rgba(255,69,0,0.3);
        }
        .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255,69,0,0.5);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        @media (max-width: 1024px) {
            .nav-links { gap: 20px; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11,11,11,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open { display: flex; }
            .mobile-toggle { display: block; }
            .nav-actions { gap: 8px; }
            .btn-login, .btn-signup { padding: 8px 16px; font-size: 0.85rem; }
        }
        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 140px 0 100px;
            background: linear-gradient(160deg, #0B0B0B 0%, #1A0A04 40%, #161616 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -180px;
            width: 580px;
            height: 580px;
            background: radial-gradient(circle, rgba(255,69,0,0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,159,0,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span {
            color: var(--accent-lava);
            display: inline;
        }
        .hero-content .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 540px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,69,0,0.12);
            border: 1px solid rgba(255,69,0,0.25);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--accent-lava);
        }
        .badge i { font-size: 0.8rem; }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 20px rgba(255,69,0,0.35);
        }
        .btn-primary:hover {
            background: var(--accent-fire);
            box-shadow: 0 6px 28px rgba(255,69,0,0.5);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: transparent;
            border: 2px solid var(--border-color);
            color: var(--text-primary);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-smooth);
        }
        .btn-secondary:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 400px;
            aspect-ratio: 3/4;
        }
        .hero-card-stack .card-layer {
            position: absolute;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .card-layer.layer-1 {
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: 3;
            border: 2px solid var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }
        .card-layer.layer-2 {
            width: 90%;
            height: 90%;
            top: 5%;
            left: -5%;
            z-index: 2;
            transform: rotate(-4deg);
            border: 1px solid var(--border-color);
        }
        .card-layer.layer-3 {
            width: 85%;
            height: 85%;
            top: 10%;
            left: 8%;
            z-index: 1;
            transform: rotate(3deg);
            border: 1px solid var(--border-color);
        }
        .card-layer img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 40px; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-visual { order: -1; }
            .hero-card-stack { max-width: 300px; margin: 0 auto; }
        }
        @media (max-width: 520px) {
            .hero-section { padding: 120px 0 60px; }
            .hero-content h1 { font-size: 1.8rem; }
            .hero-desc { font-size: 1rem; }
            .btn-primary, .btn-secondary { padding: 12px 24px; font-size: 0.9rem; }
        }
        /* Section Common */
        .section { padding: 80px 0; }
        .section-header {
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            background: rgba(255,69,0,0.1);
            color: var(--accent-lava);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.6px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.6;
        }
        /* Features Grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-lava), var(--accent-gold));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .feature-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-card:hover::before { opacity: 1; }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(255,69,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.4rem;
            color: var(--accent-lava);
        }
        .feature-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .features-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 1.5rem; }
        }
        /* Scenario Demo */
        .scenario-block {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 48px;
            border: 1px solid var(--border-color);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .scenario-text h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .scenario-text p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .scenario-stats {
            display: flex;
            gap: 32px;
        }
        .stat-item {
            text-align: left;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-lava);
            line-height: 1;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .scenario-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .scenario-image img { width: 100%; height: auto; }
        @media (max-width: 768px) {
            .scenario-block { padding: 28px; }
            .scenario-grid { grid-template-columns: 1fr; }
            .scenario-stats { gap: 20px; }
        }
        /* Social Proof */
        .proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .proof-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition-smooth);
        }
        .proof-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }
        .proof-icon {
            font-size: 2rem;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }
        .proof-card h4 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .proof-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .proof-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .proof-grid { grid-template-columns: 1fr; }
        }
        /* Version Updates */
        .changelog-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .changelog-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: var(--transition-fast);
        }
        .changelog-item:hover {
            border-color: var(--accent-lava);
        }
        .changelog-marker {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-lava);
            margin-top: 6px;
            flex-shrink: 0;
        }
        .changelog-content h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .changelog-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .changelog-date {
            font-size: 0.78rem;
            color: var(--accent-lava);
            margin-bottom: 6px;
            font-weight: 500;
        }
        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .faq-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-smooth);
        }
        .faq-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }
        .faq-card h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .faq-card p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .faq-grid { grid-template-columns: 1fr; }
        }
        /* CTA Form */
        .cta-section {
            background: linear-gradient(135deg, #1A0A04 0%, #0B0B0B 50%, #161616 100%);
            border-radius: var(--radius-xl);
            padding: 60px 48px;
            border: 1px solid rgba(255,69,0,0.25);
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255,69,0,0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .cta-text h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .cta-text p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .cta-form input {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 0.95rem;
            transition: var(--transition-fast);
        }
        .cta-form input:focus {
            outline: none;
            border-color: var(--accent-lava);
            box-shadow: 0 0 0 3px rgba(255,69,0,0.15);
        }
        .cta-form .btn-primary {
            width: 100%;
            text-align: center;
        }
        @media (max-width: 768px) {
            .cta-section { padding: 40px 24px; }
            .cta-grid { grid-template-columns: 1fr; }
        }
        /* Info List */
        .info-list-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .info-list-section .info-aside {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid var(--border-color);
        }
        .info-aside h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
        }
        .info-link-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .info-link-list li a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition-fast);
        }
        .info-link-list li a:hover {
            color: var(--accent-lava);
        }
        .info-link-list li a i { color: var(--accent-lava); font-size: 0.8rem; }
        .info-main-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .info-main-list li {
            padding-left: 24px;
            border-left: 3px solid var(--border-color);
            transition: var(--transition-fast);
        }
        .info-main-list li:hover {
            border-left-color: var(--accent-lava);
        }
        .info-main-list li h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .info-main-list li p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .info-list-section { grid-template-columns: 1fr; }
        }
        /* Event Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
        }
        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-lava);
            border: 3px solid var(--bg-primary);
            box-shadow: 0 0 10px rgba(255,69,0,0.4);
        }
        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
        }
        .timeline-content .time-label {
            font-size: 0.8rem;
            color: var(--accent-lava);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .timeline-content h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .timeline-content .btn-sm {
            margin-top: 10px;
            display: inline-block;
            background: transparent;
            border: 1px solid var(--accent-lava);
            color: var(--accent-lava);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }
        .timeline-content .btn-sm:hover {
            background: var(--accent-lava);
            color: #fff;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-links h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }
        .footer-links ul li a:hover { color: var(--accent-lava); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: rgba(11,11,11,0.8);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(255,69,0,0.35);
            transition: var(--transition-smooth);
            animation: fabPulse 3s infinite;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-fire), var(--accent-lava), var(--accent-gold));
            z-index: -1;
            opacity: 0.8;
        }
        .fab-left:hover {
            transform: scale(1.12);
            box-shadow: 0 0 28px rgba(255,69,0,0.6);
        }
        .fab-left i {
            color: #fff;
            font-size: 1.3rem;
        }
        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 18px rgba(255,69,0,0.35); }
            50% { box-shadow: 0 0 30px rgba(255,69,0,0.55); }
        }
        @media (max-width: 520px) {
            .fab-left { left: 16px; bottom: 80px; width: 48px; height: 48px; }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-ember: #FF6347;
            --accent-gold: #FF9F00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-hover: 0 8px 30px rgba(255, 69, 0, 0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-secondary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 68px;
        }

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

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding: 80px 0;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--text-primary);
        }

        .nav-links a:hover::after, .nav-links a.active::after {
            width: 100%;
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 2px 12px rgba(255,69,0,0.3);
        }

        .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255,69,0,0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(160deg, #0B0B0B 0%, #1A0A04 40%, #161616 100%);
        }

        .hero-bg-img {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 45%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.25;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 650px;
        }

        .hero-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(255,69,0,0.15), rgba(255,0,0,0.1));
            border: 1px solid var(--border-glow);
            color: var(--accent-ember);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            margin-right: 6px;
        }

        .hero-section h1 {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-section h1 span {
            color: var(--accent-lava);
            position: relative;
        }

        .hero-section h1 span::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 550px;
        }

        .hero-perks {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .perk-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border-color);
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .perk-item i {
            color: var(--accent-gold);
            font-size: 1rem;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: var(--shadow-glow);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            background: var(--accent-fire);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }

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

        /* Section Titles */
        .section-header {
            margin-bottom: 48px;
        }

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

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.6;
        }

        /* Stats Bar */
        .stats-bar {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 40px 0;
        }

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

        .stat-item {
            padding: 20px;
        }

        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-lava);
            line-height: 1;
            margin-bottom: 8px;
        }

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

        /* Content Sections */
        .content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: start;
        }

        .content-block.reverse {
            direction: rtl;
        }

        .content-block.reverse .content-text {
            direction: ltr;
        }

        .content-text h3 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.2px;
        }

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

        .content-visual {
            position: relative;
        }

        .content-visual img {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            width: 100%;
        }

        .visual-badge {
            position: absolute;
            bottom: -16px;
            right: -16px;
            background: var(--accent-lava);
            color: #fff;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
        }

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

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            position: relative;
            transition: var(--transition-smooth);
        }

        .step-card:hover {
            border-color: var(--accent-lava);
            box-shadow: 0 8px 30px rgba(255,69,0,0.15);
            transform: translateY(-4px);
        }

        .step-number {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            color: rgba(255,69,0,0.15);
            position: absolute;
            top: 16px;
            right: 20px;
            line-height: 1;
        }

        .step-card h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .step-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            position: relative;
            z-index: 1;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(160deg, #1A0A04 0%, #0B0B0B 50%, #161616 100%);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
            margin: 0 24px;
            padding: 64px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,69,0,0.08), transparent);
            border-radius: 50%;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .cta-text h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-text p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 500px;
            line-height: 1.6;
        }

        .cta-action .btn-primary {
            font-size: 1.1rem;
            padding: 16px 36px;
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        details.faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            cursor: pointer;
            transition: var(--transition-fast);
        }

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

        details.faq-item summary {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        details.faq-item summary::-webkit-details-marker {
            display: none;
        }

        details.faq-item summary i {
            transition: transform var(--transition-fast);
            color: var(--accent-lava);
            font-size: 0.85rem;
        }

        details.faq-item[open] summary i {
            transform: rotate(180deg);
        }

        details.faq-item .faq-answer {
            margin-top: 12px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
            margin-top: 80px;
        }

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

        .footer-brand .logo {
            margin-bottom: 12px;
        }

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

        .footer-links h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            font-size: 1rem;
        }

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

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

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

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

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

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

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
        }

        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11,11,11,0.9);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(11,11,11,0.9), rgba(11,11,11,0.9)), linear-gradient(135deg, #FF4500, #FF0000);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            color: var(--accent-lava);
            cursor: pointer;
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(255,69,0,0.4);
            transition: var(--transition-fast);
            opacity: 0.6;
            position: relative;
        }

        .fab-btn::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF0000;
            border-radius: 50%;
            border: 2px solid #0B0B0B;
            animation: blink-dot 1.5s infinite;
        }

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-section h1 {
                font-size: 2.25rem;
            }
            .content-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-bg-img {
                width: 100%;
                opacity: 0.12;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11,11,11,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section {
                padding: 80px 0 60px;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .cta-content {
                flex-direction: column;
                text-align: center;
            }
            .cta-text p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-perks {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .stat-number {
                font-size: 1.75rem;
            }
            .cta-section {
                margin: 0 12px;
                padding: 40px 24px;
            }
            .fab {
                left: 12px;
                bottom: 80px;
            }
            .fab-btn {
                width: 48px;
                height: 48px;
                font-size: 1.25rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-ember: #FF6347;
            --accent-gold: #FF9F00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-hover: 0 8px 30px rgba(255, 69, 0, 0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.3);
        }

        .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255, 69, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }

        /* Article Header Banner */
        .article-banner {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #0B0B0B 0%, #1A0A04 40%, #161616 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .article-banner-text h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .article-banner-text h1 span {
            color: var(--accent-lava);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 24px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

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

        .article-meta .meta-item i {
            color: var(--accent-lava);
        }

        .article-meta .badge-category {
            background: rgba(255, 69, 0, 0.2);
            color: var(--accent-lava);
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
        }

        .article-banner-image {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-glow);
            border: 1px solid var(--border-glow);
        }

        .article-banner-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-banner-image:hover img {
            transform: scale(1.05);
        }

        .article-banner-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 11, 11, 0.6) 100%);
            pointer-events: none;
        }

        /* Article Body */
        .article-body-section {
            padding: 80px 0;
            background: var(--bg-primary);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 60px;
            align-items: start;
        }

        .article-main {
            min-width: 0;
        }

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

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 40px 0 20px;
            padding-left: 16px;
            border-left: 4px solid var(--accent-lava);
            line-height: 1.3;
        }

        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 16px;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content strong {
            color: var(--accent-ember);
            font-weight: 700;
        }

        .article-content ul,
        .article-content ol {
            margin: 20px 0;
            padding-left: 28px;
        }

        .article-content li {
            margin-bottom: 12px;
            position: relative;
        }

        .article-content ul li::marker {
            color: var(--accent-lava);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .article-content th {
            background: var(--accent-lava);
            color: #fff;
            padding: 14px 18px;
            text-align: left;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .article-content td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
        }

        .article-content tr:last-child td {
            border-bottom: none;
        }

        .article-content blockquote {
            background: var(--bg-secondary);
            border-left: 4px solid var(--accent-gold);
            padding: 20px 24px;
            margin: 30px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--text-primary);
        }

        .highlight-box {
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.1) 0%, rgba(255, 99, 71, 0.05) 100%);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            margin: 30px 0;
        }

        .highlight-box h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-lava);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .highlight-box p {
            margin-bottom: 0;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--accent-lava);
        }

        .sidebar-card ul {
            list-style: none;
        }

        .sidebar-card ul li {
            margin-bottom: 12px;
        }

        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 8px 0;
            transition: var(--transition-fast);
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-lava);
            transform: translateX(4px);
        }

        .sidebar-card ul li a i {
            font-size: 0.7rem;
            color: var(--accent-lava);
        }

        .sidebar-promo-card {
            background: linear-gradient(160deg, #1A0A04 0%, #0B0B0B 100%);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            box-shadow: var(--shadow-glow);
        }

        .sidebar-promo-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
        }

        .sidebar-promo-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .btn-outline-lava {
            display: inline-block;
            padding: 10px 28px;
            border: 2px solid var(--accent-lava);
            color: var(--accent-lava);
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }

        .btn-outline-lava:hover {
            background: var(--accent-lava);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        /* Related Articles Section */
        .related-section {
            padding: 80px 0 100px;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 48px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: var(--shadow-card);
            cursor: pointer;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-glow);
        }

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

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

        .related-card-body {
            padding: 20px 22px;
        }

        .related-card-body h5 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(160deg, #1A0A04 0%, #0B0B0B 60%, #161616 100%);
            text-align: center;
            border-top: 1px solid var(--border-glow);
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            max-width: 700px;
            margin: 0 auto;
            box-shadow: var(--shadow-glow);
        }

        .cta-card h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .cta-card h2 span {
            color: var(--accent-lava);
        }

        .cta-card p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        .btn-cta-primary {
            display: inline-block;
            padding: 16px 42px;
            background: var(--accent-lava);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: var(--radius-sm);
            transition: var(--transition-fast);
            box-shadow: 0 4px 24px rgba(255, 69, 0, 0.4);
        }

        .btn-cta-primary:hover {
            background: var(--accent-fire);
            box-shadow: 0 6px 32px rgba(255, 69, 0, 0.6);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #090909;
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 1.3rem;
        }

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

        .footer-links h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 24px;
            bottom: 24px;
            z-index: 900;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FF4500 0%, #FF6347 100%);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-support i {
            color: #fff;
            font-size: 1.3rem;
        }

        .fab-support:hover {
            transform: scale(1.15);
            box-shadow: 0 0 30px rgba(255, 69, 0, 0.7);
        }

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

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found-state i {
            font-size: 4rem;
            color: var(--accent-lava);
            margin-bottom: 24px;
        }

        .not-found-state h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-banner-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .article-banner-image img {
                height: 280px;
            }
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .article-banner-text h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11, 11, 11, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .article-banner {
                padding: 120px 0 50px;
            }
            .article-banner-text h1 {
                font-size: 1.8rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .cta-card {
                padding: 40px 28px;
            }
            .cta-card h2 {
                font-size: 1.7rem;
            }
            .article-content h2 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .article-banner-text h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 12px;
            }
            .btn-cta-primary {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .fab-support {
                left: 16px;
                bottom: 16px;
                width: 46px;
                height: 46px;
            }
            .article-content {
                font-size: 0.95rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-ember: #FF6347;
            --accent-gold: #FF9F00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-hover: 0 8px 30px rgba(255, 69, 0, 0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-secondary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--accent-lava); font-size: 1.5rem; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-fast);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width var(--transition-smooth);
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a:hover::after, .nav-links a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }
        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 2px 12px rgba(255,69,0,0.3);
        }
        .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255,69,0,0.5);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        /* Page Wrapper */
        .page-wrapper {
            padding-top: 68px;
        }
        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 80px 0 70px;
            background: linear-gradient(160deg, #0B0B0B 0%, #1A0A04 40%, #161616 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,69,0,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin: 0 0 20px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span {
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-ember));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content .lead {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.65;
            max-width: 540px;
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .hero-stat {
            background: rgba(255,69,0,0.08);
            border: 1px solid rgba(255,69,0,0.2);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            text-align: center;
            min-width: 100px;
        }
        .hero-stat .stat-number {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-lava);
            line-height: 1;
        }
        .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .btn-primary-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-lava);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: var(--shadow-glow);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .btn-primary-large:hover {
            background: var(--accent-fire);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .hero-visual {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .ranking-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .ranking-panel h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            color: var(--text-primary);
            margin: 0 0 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .ranking-panel h3 i {
            color: var(--accent-gold);
        }
        .rank-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            margin-bottom: 8px;
            background: rgba(255,255,255,0.03);
            transition: var(--transition-fast);
        }
        .rank-item:last-child { margin-bottom: 0; }
        .rank-item:hover { background: rgba(255,69,0,0.05); }
        .rank-pos {
            font-weight: 700;
            color: var(--accent-lava);
            width: 28px;
            font-size: 0.9rem;
        }
        .rank-name {
            flex: 1;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .rank-points {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        /* Section Common */
        .section {
            padding: 70px 0;
        }
        .section-dark {
            background-color: var(--bg-secondary);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.6;
        }
        .accent-text {
            color: var(--accent-lava);
        }
        /* Strategy Grid */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
        }
        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .strategy-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .strategy-card .card-icon {
            width: 48px;
            height: 48px;
            background: rgba(255,69,0,0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.4rem;
            color: var(--accent-lava);
        }
        .strategy-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
        }
        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        .strategy-card .card-tag {
            display: inline-block;
            background: rgba(255,69,0,0.15);
            color: var(--accent-lava);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
            margin-top: 14px;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        /* Steps / Process Section */
        .steps-container {
            display: flex;
            flex-direction: column;
            gap: 32px;
            max-width: 900px;
            margin: 0 auto;
        }
        .step-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-smooth);
        }
        .step-item:hover {
            border-color: var(--accent-lava);
        }
        .step-number {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-lava);
            line-height: 1;
            min-width: 60px;
            opacity: 0.7;
        }
        .step-body h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
        }
        .step-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        /* Tools & Tips */
        .tips-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .tips-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .tips-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .tips-list .tip {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .tips-list .tip:last-child { border-bottom: none; }
        .tips-list .tip i {
            color: var(--accent-gold);
            font-size: 1.1rem;
            margin-top: 2px;
        }
        .tips-list .tip span {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }
        /* FAQ */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        details.faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: var(--transition-fast);
        }
        details.faq-item[open] {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }
        details.faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
        }
        details.faq-item summary::-webkit-details-marker { display: none; }
        details.faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-lava);
            transition: transform var(--transition-fast);
        }
        details.faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1A0A04 0%, #0B0B0B 100%);
            border-top: 1px solid var(--border-glow);
            border-bottom: 1px solid var(--border-glow);
            text-align: center;
            padding: 70px 0;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        /* Footer */
        .site-footer {
            background: #0A0A0A;
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .logo i { color: var(--accent-lava); }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-links h4 {
            font-family: var(--font-heading);
            font-size: 0.95rem;
            color: var(--text-primary);
            margin: 0 0 16px;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition-fast);
        }
        .footer-links a:hover { color: var(--accent-lava); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* FAB */
        .fab-container {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
        }
        .fab-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-lava);
            color: var(--accent-lava);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(255,69,0,0.35);
            transition: var(--transition-smooth);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .fab-btn:hover {
            box-shadow: 0 0 32px rgba(255,69,0,0.6);
            transform: scale(1.1);
            border-color: var(--accent-ember);
        }
        .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: #FF0000;
            border-radius: 50%;
            animation: pulse-dot 1.5s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(1.6); }
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 36px; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-visual { max-width: 480px; }
            .tips-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11,11,11,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open { display: flex; }
            .mobile-toggle { display: block; }
            .nav-actions { gap: 8px; }
            .btn-login, .btn-signup { padding: 8px 16px; font-size: 0.85rem; }
            .hero-section { padding: 50px 0 40px; }
            .hero-content h1 { font-size: 1.8rem; }
            .strategy-grid { grid-template-columns: 1fr; }
            .steps-container .step-item { flex-direction: column; gap: 16px; }
            .section-header h2 { font-size: 1.7rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-section h2 { font-size: 1.5rem; }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-ember: #FF6347;
            --accent-gold: #FF9F00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-color: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-hover: 0 8px 30px rgba(255, 69, 0, 0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-lava);
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.3);
        }

        .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255, 69, 0, 0.5);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 140px 0 80px;
            background: linear-gradient(160deg, #0B0B0B 0%, #1A0A04 40%, #161616 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

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

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

        .hero-content h1 span {
            color: var(--accent-lava);
        }

        .hero-content .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .badge {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 10px 18px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: var(--transition-fast);
        }

        .badge i {
            color: var(--accent-lava);
            font-size: 1.1rem;
        }

        .badge:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }

        .hero-visual {
            position: relative;
        }

        .hero-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border-glow);
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .flash-sale-strip {
            background: linear-gradient(90deg, var(--accent-lava), var(--accent-fire));
            padding: 14px 24px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .flash-sale-strip .flash-text {
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .flash-sale-strip .flash-text i {
            animation: pulse 1.5s infinite;
        }

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

        .countdown-timer {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .countdown-timer .time-block {
            background: rgba(0, 0, 0, 0.3);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            min-width: 44px;
            text-align: center;
        }

        .countdown-timer .time-separator {
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .btn-flash-cta {
            background: #fff;
            color: var(--accent-lava);
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-fast);
            white-space: nowrap;
        }

        .btn-flash-cta:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.3);
        }

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

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

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 650px;
            line-height: 1.7;
        }

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

        /* Info Cards Grid */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

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

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

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

        .info-card .card-icon {
            width: 52px;
            height: 52px;
            background: rgba(255, 69, 0, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.6rem;
            color: var(--accent-lava);
        }

        .info-card h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

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

        /* Rules Timeline */
        .rules-timeline {
            display: flex;
            flex-direction: column;
            gap: 32px;
            max-width: 900px;
        }

        .timeline-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }

        .timeline-marker {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--accent-lava);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            flex: 1;
            transition: var(--transition-fast);
        }

        .timeline-content:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }

        .timeline-content h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

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

        .timeline-content .rule-detail {
            margin-top: 12px;
            padding: 12px 16px;
            background: rgba(255, 69, 0, 0.05);
            border-left: 3px solid var(--accent-lava);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* Penalty Table */
        .penalty-section {
            overflow-x: auto;
        }

        .penalty-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .penalty-table th {
            background: var(--accent-lava);
            color: #fff;
            padding: 16px 20px;
            text-align: left;
            font-weight: 700;
            font-size: 0.95rem;
        }

        .penalty-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

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

        .penalty-table tr:hover td {
            background: rgba(255, 69, 0, 0.05);
        }

        .penalty-table .highlight-cell {
            color: var(--accent-lava);
            font-weight: 700;
        }

        /* FAQ Accordion */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 900px;
        }

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-primary);
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: var(--transition-fast);
        }

        .faq-question i {
            color: var(--accent-lava);
            transition: transform var(--transition-smooth);
            font-size: 1.2rem;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

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

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(160deg, #1A0A04 0%, #0B0B0B 100%);
            text-align: left;
            border-top: 1px solid var(--border-glow);
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--accent-lava);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-glow);
        }

        .cta-content h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 500px;
            line-height: 1.7;
        }

        .btn-cta-large {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 16px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 4px 20px rgba(255, 69, 0, 0.4);
            white-space: nowrap;
        }

        .btn-cta-large:hover {
            background: var(--accent-fire);
            box-shadow: 0 6px 28px rgba(255, 69, 0, 0.6);
            transform: translateY(-2px);
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 1.3rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 400px;
        }

        .footer-links h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            text-align: center;
        }

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

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-lava);
            color: var(--accent-lava);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(255, 69, 0, 0.5);
            transition: var(--transition-fast);
            animation: float 2.5s ease-in-out infinite;
        }

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

        .fab:hover {
            background: var(--accent-lava);
            color: #fff;
            box-shadow: 0 0 25px rgba(255, 69, 0, 0.7);
            transform: scale(1.1);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-card {
                flex-direction: column;
                text-align: left;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11, 11, 11, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions {
                gap: 8px;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .hero-section {
                padding: 120px 0 60px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .penalty-table {
                font-size: 0.85rem;
            }
            .penalty-table th,
            .penalty-table td {
                padding: 12px 14px;
            }
            .flash-sale-strip {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-card {
                padding: 36px 28px;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .badge {
                font-size: 0.8rem;
                padding: 8px 14px;
            }
            .btn-flash-cta {
                width: 100%;
                text-align: center;
            }
            .logo span {
                font-size: 1rem;
            }
        }