/* roulang page: index */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.6);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        /* Navbar */
        .navbar-custom {
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all 0.3s ease;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-lava) !important;
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .navbar-brand:hover {
            color: var(--accent-fire) !important;
        }
        .navbar-brand i {
            margin-right: 6px;
            color: var(--accent-gold);
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            text-decoration: none;
        }
        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-lava) !important;
            background-color: rgba(255, 69, 0, 0.08);
        }

        .nav-buttons .btn-login {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
        }
        .nav-buttons .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .nav-buttons .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.25s;
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.35);
        }
        .nav-buttons .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255, 0, 0, 0.5);
            transform: translateY(-1px);
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #0B0B0B 0%, #1A0808 50%, #160505 100%);
            padding: 70px 0 60px;
            border-bottom: 1px solid #2A1515;
            position: relative;
            overflow: hidden;
        }
        .hero-section::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%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255,69,0,0.15);
            color: var(--accent-lava);
            border: 1px solid rgba(255,69,0,0.4);
            padding: 6px 16px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.4px;
            margin-bottom: 18px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            color: #FFFFFF;
            margin-bottom: 18px;
        }
        .hero-title span {
            color: var(--accent-lava);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin-bottom: 28px;
        }
        .btn-hero-primary {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(255,69,0,0.4);
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
        }
        .btn-hero-primary:hover {
            background: var(--accent-fire);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255,0,0,0.5);
            color: #fff;
        }
        .btn-hero-outline {
            background: transparent;
            border: 1.5px solid var(--accent-lava);
            color: var(--accent-lava);
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 700;
            margin-left: 12px;
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
        }
        .btn-hero-outline:hover {
            background: rgba(255,69,0,0.1);
            color: #fff;
        }
        .hero-image-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 2px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }
        .hero-image-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Section titles */
        .section-label {
            display: inline-block;
            color: var(--accent-lava);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-size: 0.8rem;
            margin-bottom: 8px;
        }
        .section-heading {
            font-weight: 800;
            font-size: 2.2rem;
            margin-bottom: 14px;
            color: #fff;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 700px;
            margin-bottom: 40px;
        }

        /* Guest cards */
        .guest-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            transition: all 0.3s;
            position: relative;
        }
        .guest-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }
        .guest-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lava), var(--accent-fire));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 16px;
        }
        .guest-name {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 6px;
        }
        .guest-role {
            color: var(--accent-lava);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .guest-bio {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 14px;
        }
        .guest-link {
            color: var(--accent-lava);
            font-weight: 700;
            text-decoration: none;
            font-size: 0.9rem;
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--accent-lava), transparent);
            border-radius: 4px;
        }
        .timeline-item {
            margin-bottom: 32px;
            position: relative;
        }
        .timeline-dot {
            width: 18px;
            height: 18px;
            background: var(--accent-lava);
            border-radius: 50%;
            position: absolute;
            left: -34px;
            top: 4px;
            border: 3px solid var(--bg-primary);
        }
        .timeline-date {
            font-weight: 700;
            color: var(--accent-lava);
            font-size: 0.85rem;
            margin-bottom: 4px;
        }
        .timeline-title {
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .timeline-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Price comparison */
        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .comparison-table th {
            background: var(--accent-lava);
            color: #fff;
            font-weight: 700;
            padding: 14px 18px;
            text-align: left;
        }
        .comparison-table td {
            padding: 14px 18px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }
        .comparison-table .highlight-col {
            background: rgba(255,69,0,0.08);
            color: #fff;
            font-weight: 600;
        }
        .comparison-table .icon-check {
            color: #32CD32;
        }
        .comparison-table .icon-cross {
            color: var(--accent-fire);
        }

        /* Info list */
        .info-list-item {
            display: flex;
            align-items: flex-start;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
        .info-list-item i {
            color: var(--accent-lava);
            font-size: 1.3rem;
            margin-right: 16px;
            margin-top: 3px;
        }
        .info-list-title {
            font-weight: 700;
            margin-bottom: 4px;
        }
        .info-list-desc {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: 0.2s;
        }
        .faq-question:hover {
            color: var(--accent-lava);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Footer */
        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }
        .footer-link {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            transition: 0.2s;
            display: block;
            margin-bottom: 6px;
        }
        .footer-link:hover {
            color: var(--accent-lava);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 30px;
            padding-top: 20px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .btn-hero-outline {
                margin-left: 0;
                margin-top: 12px;
            }
            .section-heading {
                font-size: 1.6rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.6);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Navbar */
        .navbar-custom {
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-lava) !important;
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .navbar-brand:hover {
            color: var(--accent-fire) !important;
        }
        .navbar-brand i {
            margin-right: 6px;
            color: var(--accent-gold);
        }
        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            text-decoration: none;
        }
        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-lava) !important;
            background-color: rgba(255, 69, 0, 0.08);
        }
        .nav-buttons .btn-login {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }
        .nav-buttons .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .nav-buttons .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.25s;
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.35);
            cursor: pointer;
        }
        .nav-buttons .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255, 0, 0, 0.5);
            transform: translateY(-1px);
        }
        /* Article Header */
        .article-header {
            background: linear-gradient(135deg, #0B0B0B 0%, #1A0808 50%, #160505 100%);
            padding: 64px 0 40px;
            border-bottom: 1px solid #2A1515;
            position: relative;
        }
        .article-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 30% 20%, rgba(255, 69, 0, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        .article-category-badge {
            display: inline-block;
            background: rgba(255, 69, 0, 0.15);
            color: var(--accent-lava);
            border: 1px solid rgba(255, 69, 0, 0.4);
            padding: 6px 16px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.4px;
            margin-bottom: 16px;
        }
        .article-title {
            font-size: 2.5rem;
            font-weight: 900;
            line-height: 1.25;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .article-meta {
            color: var(--text-muted);
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
        }
        .article-meta i {
            color: var(--accent-lava);
            margin-right: 6px;
        }
        /* Article Body */
        .article-body-wrapper {
            padding: 50px 0 70px;
        }
        .article-content {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-content h2 {
            color: var(--text-primary);
            font-weight: 800;
            font-size: 1.75rem;
            margin-top: 36px;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-subtle);
        }
        .article-content h3 {
            color: var(--accent-lava);
            font-weight: 700;
            font-size: 1.35rem;
            margin-top: 28px;
            margin-bottom: 12px;
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content strong {
            color: var(--accent-gold);
            font-weight: 700;
        }
        .article-content blockquote {
            background: var(--bg-card);
            border-left: 4px solid var(--accent-lava);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-primary);
            font-style: italic;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid var(--border-subtle);
        }
        /* 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: 20px;
            display: block;
        }
        .not-found-state h2 {
            font-weight: 800;
            margin-bottom: 12px;
        }
        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .btn-back-home {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            transition: 0.3s;
            box-shadow: 0 4px 16px rgba(255, 69, 0, 0.35);
        }
        .btn-back-home:hover {
            background: var(--accent-fire);
            color: #fff;
            transform: translateY(-2px);
        }
        /* Sidebar */
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 28px;
        }
        .sidebar-card h5 {
            color: var(--accent-lava);
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-link {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-weight: 500;
            transition: 0.2s;
        }
        .sidebar-link:hover {
            color: var(--accent-lava);
            padding-left: 6px;
        }
        .sidebar-link i {
            margin-right: 8px;
            font-size: 0.8rem;
            color: var(--accent-gold);
        }
        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, #1A0808 0%, #0B0B0B 100%);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin: 40px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::after {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-banner h3 {
            font-weight: 900;
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-banner p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .btn-cta-banner {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 14px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 6px 24px rgba(255, 69, 0, 0.4);
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
            position: relative;
            z-index: 1;
        }
        .btn-cta-banner:hover {
            background: var(--accent-fire);
            color: #fff;
            box-shadow: 0 10px 30px rgba(255, 0, 0, 0.5);
            transform: translateY(-2px);
        }
        /* Footer */
        .footer-custom {
            background-color: #080808;
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 24px;
            color: var(--text-secondary);
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }
        .footer-link {
            display: block;
            color: var(--text-muted);
            text-decoration: none;
            padding: 6px 0;
            font-size: 0.95rem;
            transition: 0.2s;
        }
        .footer-link:hover {
            color: var(--accent-lava);
            padding-left: 4px;
        }
        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* FAB */
        .fab-custom {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent-lava);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-lava);
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.35);
            transition: all 0.3s;
            cursor: pointer;
            text-decoration: none;
        }
        .fab-custom:hover {
            background: var(--accent-lava);
            color: #fff;
            box-shadow: 0 0 30px rgba(255, 69, 0, 0.6);
            transform: scale(1.1);
        }
        @media (max-width: 768px) {
            .article-title {
                font-size: 1.8rem;
            }
            .article-content {
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.4rem;
            }
            .cta-banner {
                padding: 24px 20px;
            }
            .cta-banner h3 {
                font-size: 1.4rem;
            }
            .fab-custom {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.6);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        /* Navbar */
        .navbar-custom {
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all 0.3s ease;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-lava) !important;
            letter-spacing: -0.3px;
            text-decoration: none;
        }

        .navbar-brand:hover {
            color: var(--accent-fire) !important;
        }

        .navbar-brand i {
            margin-right: 6px;
            color: var(--accent-gold);
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            text-decoration: none;
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-lava) !important;
            background-color: rgba(255, 69, 0, 0.08);
        }

        .nav-buttons .btn-login {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
        }

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

        .nav-buttons .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.25s;
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.35);
        }

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

        /* Page Banner */
        .page-banner {
            background: linear-gradient(135deg, #0B0B0B 0%, #1A0808 50%, #160505 100%);
            padding: 50px 0 40px;
            border-bottom: 1px solid #2A1515;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .banner-badge {
            display: inline-block;
            background: rgba(255, 69, 0, 0.15);
            color: var(--accent-lava);
            border: 1px solid rgba(255, 69, 0, 0.4);
            padding: 6px 16px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.4px;
            margin-bottom: 16px;
        }

        .banner-title {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .banner-title span {
            color: var(--accent-lava);
        }

        .banner-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
        }

        /* Coupon Wall */
        .coupon-section {
            padding: 60px 0;
        }

        .main-coupon {
            background: linear-gradient(135deg, #1C0A0A 0%, #2A1015 50%, #1C0A0A 100%);
            border: 2px solid var(--accent-lava);
            border-radius: var(--radius-lg);
            padding: 40px 30px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 8px 40px rgba(255, 69, 0, 0.2);
            transition: all 0.3s ease;
        }

        .main-coupon::after {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 69, 0, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .main-coupon .coupon-label {
            display: inline-block;
            background: var(--accent-fire);
            color: #fff;
            font-weight: 800;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        .main-coupon .coupon-code {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent-gold);
            letter-spacing: 2px;
            background: rgba(0, 0, 0, 0.5);
            display: inline-block;
            padding: 10px 30px;
            border-radius: var(--radius-md);
            border: 1px dashed var(--accent-gold);
            margin-bottom: 12px;
            word-break: break-all;
        }

        .main-coupon .coupon-value {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .main-coupon .coupon-value strong {
            color: var(--accent-lava);
            font-size: 1.8rem;
        }

        .btn-copy-coupon {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 4px 18px rgba(255, 69, 0, 0.45);
            transition: all 0.3s;
            cursor: pointer;
        }

        .btn-copy-coupon:hover {
            background: var(--accent-fire);
            box-shadow: 0 6px 24px rgba(255, 0, 0, 0.6);
            transform: translateY(-2px);
        }

        .coupon-list-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all 0.25s;
            cursor: pointer;
            position: relative;
        }

        .coupon-list-item:hover {
            border-color: var(--accent-lava);
            box-shadow: 0 4px 20px rgba(255, 69, 0, 0.2);
            transform: translateY(-2px);
        }

        .coupon-list-item .small-code {
            font-weight: 800;
            color: var(--accent-lava);
            font-size: 1.15rem;
            letter-spacing: 0.5px;
        }

        .coupon-list-item .small-value {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .coupon-list-item .btn-sm-copy {
            background: transparent;
            border: 1px solid var(--accent-lava);
            color: var(--accent-lava);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            transition: all 0.2s;
            cursor: pointer;
        }

        .coupon-list-item .btn-sm-copy:hover {
            background: var(--accent-lava);
            color: #fff;
        }

        /* How it works */
        .how-it-works {
            padding: 50px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            position: relative;
            transition: all 0.3s;
            height: 100%;
        }

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

        .step-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent-lava);
            opacity: 0.3;
            position: absolute;
            top: 10px;
            right: 20px;
            line-height: 1;
        }

        .step-icon {
            font-size: 2rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }

        .step-card h4 {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* Promo Table */
        .promo-table-section {
            padding: 60px 0;
        }

        .promo-row {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: all 0.25s;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .promo-row:hover {
            border-color: var(--accent-lava);
            box-shadow: 0 2px 16px rgba(255, 69, 0, 0.15);
        }

        .promo-name {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
        }

        .promo-detail {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .promo-value {
            font-weight: 800;
            color: var(--accent-gold);
            font-size: 1.2rem;
        }

        .promo-status {
            display: inline-block;
            background: rgba(50, 205, 50, 0.2);
            color: #32CD32;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .promo-badge-new {
            display: inline-block;
            background: var(--accent-lava);
            color: #fff;
            padding: 2px 10px;
            border-radius: 10px;
            font-size: 0.7rem;
            font-weight: 800;
            margin-left: 8px;
            animation: pulse-badge 1.5s infinite;
        }

        /* FAQ */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .accordion-custom .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            box-shadow: none;
            padding: 18px 24px;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(255, 69, 0, 0.06);
            color: var(--accent-lava);
        }

        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(0.7);
        }

        .accordion-custom .accordion-body {
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 0 24px 20px;
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 70px 0;
            text-align: center;
            background: linear-gradient(135deg, #1A0808 0%, #0B0B0B 50%, #1A0808 100%);
            border-top: 1px solid #2A1515;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 900;
            margin-bottom: 16px;
        }

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

        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0 auto 28px;
        }

        .btn-cta-large {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 16px 44px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.5);
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }

        .btn-cta-large:hover {
            background: var(--accent-fire);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(255, 0, 0, 0.6);
            color: #fff;
        }

        /* Footer */
        .footer-custom {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
        }

        .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }

        .footer-link {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 30px;
            padding-top: 20px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-custom {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 11, 11, 0.75);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #FF4500, #FF0000) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lava);
            font-size: 1.4rem;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.35);
            animation: float-fab 3s ease-in-out infinite;
        }

        .fab-custom:hover {
            transform: scale(1.12);
            box-shadow: 0 0 32px rgba(255, 69, 0, 0.6);
            color: #fff;
            background: var(--accent-lava);
        }

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

        .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: var(--accent-fire);
            border-radius: 50%;
            animation: pulse-dot 1.8s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        /* Mobile Nav */
        @media (max-width: 991.98px) {
            .nav-buttons {
                display: flex !important;
            }
        }

        @media (max-width: 767.98px) {
            .banner-title {
                font-size: 2rem;
            }
            .main-coupon .coupon-code {
                font-size: 1.8rem;
                padding: 8px 18px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .coupon-list-item {
                padding: 16px;
            }
        }

        @media (max-width: 520px) {
            .main-coupon {
                padding: 24px 16px;
            }
            .main-coupon .coupon-code {
                font-size: 1.4rem;
                letter-spacing: 1px;
            }
            .promo-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .banner-title {
                font-size: 1.7rem;
            }
            .btn-copy-coupon {
                width: 100%;
                text-align: center;
            }
        }

        .copied-toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--accent-lava);
            color: #fff;
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            z-index: 9999;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.3s ease;
            pointer-events: none;
        }

        .copied-toast.show {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.6);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
        }

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

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

        button, .btn {
            cursor: pointer;
            font-family: var(--font-sans);
        }

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

        /* Navbar (Shared) */
        .navbar-custom {
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-lava) !important;
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .navbar-brand:hover {
            color: var(--accent-fire) !important;
        }
        .navbar-brand i {
            margin-right: 6px;
            color: var(--accent-gold);
        }
        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            text-decoration: none;
        }
        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-lava) !important;
            background-color: rgba(255, 69, 0, 0.08);
        }
        .nav-buttons .btn-login {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
        }
        .nav-buttons .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .nav-buttons .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.25s;
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.35);
        }
        .nav-buttons .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255, 0, 0, 0.5);
            transform: translateY(-1px);
        }

        /* Category Page Hero */
        .cat-hero {
            background: linear-gradient(135deg, #0B0B0B 0%, #1A0808 60%, #160505 100%);
            padding: 60px 0 50px;
            border-bottom: 1px solid #2A1515;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            top: -20%;
            right: -5%;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(255,69,0,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cat-badge {
            display: inline-block;
            background: rgba(255,69,0,0.15);
            color: var(--accent-lava);
            border: 1px solid rgba(255,69,0,0.4);
            padding: 6px 18px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.4px;
            margin-bottom: 16px;
        }
        .cat-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 16px;
            color: #FFFFFF;
        }
        .cat-title span {
            color: var(--accent-lava);
        }
        .cat-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 650px;
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .btn-cat-primary {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(255,69,0,0.4);
            transition: 0.3s;
            display: inline-block;
        }
        .btn-cat-primary:hover {
            background: var(--accent-fire);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255,0,0,0.5);
            color: #fff;
        }

        /* Section Common */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 700px;
            line-height: 1.6;
        }
        .highlight-lava {
            color: var(--accent-lava);
            font-weight: 700;
        }

        /* Promo Cards */
        .promo-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all 0.3s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .promo-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .promo-card.hot::after {
            content: "HOT";
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-fire);
            color: #fff;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .promo-card.new::after {
            content: "MỚI";
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-gold);
            color: #0B0B0B;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .promo-icon {
            font-size: 2.2rem;
            color: var(--accent-lava);
            margin-bottom: 16px;
        }
        .promo-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .promo-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .promo-value {
            display: inline-block;
            background: rgba(255,69,0,0.12);
            color: var(--accent-lava);
            font-weight: 800;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            margin-top: 8px;
        }
        .promo-link {
            color: var(--accent-lava);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: 0.2s;
            margin-top: 8px;
        }
        .promo-link:hover {
            color: var(--accent-fire);
        }

        /* Info Panel */
        .info-panel {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: 32px;
            border: 1px solid var(--border-subtle);
        }
        .info-list {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }
        .info-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
        }
        .info-list li:last-child {
            border-bottom: none;
        }
        .info-list i {
            color: var(--accent-lava);
            margin-top: 4px;
            font-size: 1rem;
        }

        /* Data Metrics */
        .metric-item {
            text-align: left;
            padding: 20px;
        }
        .metric-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent-lava);
            line-height: 1.1;
        }
        .metric-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(255,69,0,0.4);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            background: transparent;
            width: 100%;
            border: none;
            text-align: left;
        }
        .faq-question i {
            color: var(--accent-lava);
            transition: transform 0.3s;
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1C0A0A 0%, #0B0B0B 100%);
            border: 1px solid #2A1515;
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            margin: 40px 0;
        }
        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 24px;
        }
        .btn-cta {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 16px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 6px 24px rgba(255,69,0,0.45);
            transition: 0.3s;
        }
        .btn-cta:hover {
            background: var(--accent-fire);
            box-shadow: 0 10px 32px rgba(255,0,0,0.55);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Footer (Shared) */
        .footer-custom {
            background-color: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-lava);
            margin-bottom: 12px;
        }
        .footer-brand i {
            color: var(--accent-gold);
        }
        .footer-link {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        .footer-link:hover {
            color: var(--accent-lava);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            margin-top: 36px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cat-title {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .cat-hero {
                padding: 40px 0 35px;
            }
            .cat-title {
                font-size: 1.8rem;
            }
            .cat-desc {
                font-size: 1rem;
            }
            .promo-card {
                padding: 20px 18px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h3 {
                font-size: 1.5rem;
            }
            .metric-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .cat-title {
                font-size: 1.6rem;
            }
            .btn-cat-primary {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .promo-card h3 {
                font-size: 1.2rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1C1C1C;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-gold: #FFBF00;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-glow: rgba(255, 69, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(255, 69, 0, 0.25);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.6);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
        }

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

        a {
            text-decoration: none;
            transition: color 0.25s;
        }

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

        .navbar-custom {
            background-color: rgba(11, 11, 11, 0.92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--accent-lava) !important;
            letter-spacing: -0.3px;
            text-decoration: none;
        }
        .navbar-brand:hover {
            color: var(--accent-fire) !important;
        }
        .navbar-brand i {
            margin-right: 6px;
            color: var(--accent-gold);
        }
        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
            text-decoration: none;
        }
        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-lava) !important;
            background-color: rgba(255, 69, 0, 0.08);
        }
        .nav-buttons .btn-login {
            background: transparent;
            border: 1px solid var(--text-secondary);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s;
            cursor: pointer;
        }
        .nav-buttons .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .nav-buttons .btn-signup {
            background: var(--accent-lava);
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.25s;
            box-shadow: 0 2px 12px rgba(255, 69, 0, 0.35);
            cursor: pointer;
        }
        .nav-buttons .btn-signup:hover {
            background: var(--accent-fire);
            box-shadow: 0 4px 20px rgba(255, 0, 0, 0.5);
            transform: translateY(-1px);
        }

        .hero-section {
            background: linear-gradient(135deg, #0B0B0B 0%, #1A0808 50%, #160505 100%);
            padding: 70px 0 60px;
            border-bottom: 1px solid #2A1515;
            position: relative;
            overflow: hidden;
        }
        .hero-section::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%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255,69,0,0.15);
            color: var(--accent-lava);
            border: 1px solid rgba(255,69,0,0.4);
            padding: 6px 16px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.4px;
            margin-bottom: 18px;
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            color: #FFFFFF;
            margin-bottom: 18px;
        }
        .hero-title span {
            color: var(--accent-lava);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin-bottom: 28px;
        }
        .btn-hero-primary {
            background: var(--accent-lava);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(255,69,0,0.4);
            transition: 0.3s;
            display: inline-block;
            cursor: pointer;
        }
        .btn-hero-primary:hover {
            background: var(--accent-fire);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255,0,0,0.5);
            color: #fff;
        }
        .btn-hero-outline {
            background: transparent;
            border: 1.5px solid var(--accent-lava);
            color: var(--accent-lava);
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 700;
            margin-left: 12px;
            transition: 0.3s;
            display: inline-block;
            cursor: pointer;
        }
        .btn-hero-outline:hover {
            background: rgba(255,69,0,0.1);
            color: #fff;
        }

        .section-label {
            display: inline-block;
            color: var(--accent-lava);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 15px;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 35px;
            max-width: 650px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: 0.3s;
        }
        .stat-card:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent-lava);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-label {
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .event-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: 0.3s;
            height: 100%;
        }
        .event-card:hover {
            border-color: var(--accent-lava);
            box-shadow: 0 8px 32px rgba(255, 69, 0, 0.2);
            transform: translateY(-4px);
        }
        .event-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .event-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .event-card .card-badge-hot {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--accent-fire);
            color: #fff;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .event-card .card-body {
            padding: 20px;
        }
        .event-card .card-title {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .event-card .card-text {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .event-card .card-meta {
            display: flex;
            gap: 14px;
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-bottom: 16px;
        }
        .event-card .card-meta i {
            color: var(--accent-lava);
            margin-right: 4px;
        }
        .btn-event {
            background: transparent;
            border: 1px solid var(--accent-lava);
            color: var(--accent-lava);
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            transition: 0.3s;
            cursor: pointer;
        }
        .btn-event:hover {
            background: var(--accent-lava);
            color: #fff;
        }

        .timeline-section {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-subtle);
        }
        .timeline-item {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
            position: relative;
            padding-left: 30px;
            border-left: 2px solid var(--border-subtle);
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            background: var(--accent-lava);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--accent-lava);
        }
        .timeline-date {
            color: var(--accent-lava);
            font-weight: 700;
            font-size: 0.9rem;
            min-width: 100px;
        }
        .timeline-content h5 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .timeline-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin: 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
        }
        .faq-item .faq-header {
            padding: 18px 22px;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item .faq-header:hover {
            color: var(--accent-lava);
        }
        .faq-item .faq-body {
            padding: 0 22px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.open .faq-body {
            display: block;
        }
        .faq-item.open .faq-header {
            color: var(--accent-lava);
        }

        .cta-section {
            background: linear-gradient(135deg, #1A0808 0%, #0B0B0B 100%);
            border: 2px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
        }
        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .cta-desc {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
            margin-top: 60px;
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent-lava);
            margin-bottom: 10px;
        }
        .footer-link {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-size: 0.9rem;
            transition: 0.2s;
        }
        .footer-link:hover {
            color: var(--accent-lava);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 22px;
            margin-top: 36px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-custom {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1050;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(11, 11, 11, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-lava);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lava);
            font-size: 1.4rem;
            cursor: pointer;
            transition: 0.3s;
            box-shadow: 0 0 15px rgba(255, 69, 0, 0.5);
            animation: pulse-fab 2.5s infinite;
        }
        .fab-custom:hover {
            background: var(--accent-lava);
            color: #fff;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(255, 0, 0, 0.7);
        }
        @keyframes pulse-fab {
            0%, 100% { box-shadow: 0 0 12px rgba(255, 69, 0, 0.5); }
            50% { box-shadow: 0 0 26px rgba(255, 69, 0, 0.8); }
        }

        @media (max-width: 991px) {
            .hero-title {
                font-size: 2rem;
            }
            .btn-hero-outline {
                margin-left: 0;
                margin-top: 10px;
            }
            .timeline-section {
                padding: 24px 20px;
            }
            .timeline-item {
                padding-left: 22px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section {
                padding: 30px 20px;
            }
            .fab-custom {
                left: 12px;
                bottom: 80px;
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
        }