/* roulang page: index */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #12172B;
            --bg-card: rgba(18, 24, 48, 0.65);
            --accent-blue: #3B82F6;
            --accent-cyan: #06B6D4;
            --accent-glow: #2563EB;
            --text-primary: #F0F4FF;
            --text-secondary: #A5B4D4;
            --text-muted: #6B7FA8;
            --border-glass: rgba(59, 130, 246, 0.2);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --spacing-section: 5rem;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.3s ease;
        }

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

        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 1.75rem;
        }

        .desktop-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            position: relative;
        }

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

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--accent-blue);
            border-radius: 4px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

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

        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(18, 23, 43, 0.96);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            gap: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
        }

        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
        }

        .mobile-nav .nav-actions-mobile {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }

        /* Hero */
        .hero-section {
            padding: 9rem 0 5rem;
            position: relative;
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 3rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-left {
            transform: translateY(-8px) rotate(-0.5deg);
        }

        .hero-right {
            transform: translateY(8px) rotate(0.5deg);
        }

        .hero-badge {
            display: inline-block;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.35);
            padding: 0.4rem 1.1rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            color: var(--accent-blue);
            font-weight: 600;
            margin-bottom: 1.25rem;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 540px;
        }

        .hero-kpis {
            display: flex;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }

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

        .kpi-value {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .kpi-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--accent-blue);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            box-shadow: var(--shadow-glow);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: #2563EB;
            box-shadow: 0 0 35px rgba(37, 99, 235, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .btn-outline:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }

        .hero-image {
            width: 100%;
            border-radius: 1.5rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            transform: perspective(1000px) rotateY(-3deg);
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.4px;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 3rem;
            max-width: 700px;
        }

        /* Product Value / Selling Points */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .value-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
            transition: all 0.3s ease;
        }

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

        .value-icon {
            font-size: 2.2rem;
            color: var(--accent-blue);
            margin-bottom: 1rem;
        }

        .value-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .value-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Feature Showcase */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .feature-image {
            width: 100%;
            border-radius: 1.5rem;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.45);
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 1.5rem 0 0;
        }

        .feature-list li {
            display: flex;
            gap: 0.75rem;
            align-items: flex-start;
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

        .feature-list i {
            color: var(--accent-cyan);
            margin-top: 3px;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .step-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
            text-align: center;
            transition: all 0.3s;
        }

        .step-number {
            width: 50px;
            height: 50px;
            background: var(--accent-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
            margin: 0 auto 1rem;
            box-shadow: 0 0 18px rgba(59, 130, 246, 0.4);
        }

        /* Platform Download */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .platform-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem 1rem;
            text-align: center;
            transition: all 0.3s;
        }

        .platform-card i {
            font-size: 2.4rem;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
        }

        .testimonial-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
        }

        .stars {
            color: #FBBF24;
            margin-bottom: 0.75rem;
        }

        .testimonial-text {
            color: var(--text-secondary);
            font-style: italic;
            margin-bottom: 1rem;
        }

        .testimonial-author {
            font-weight: 700;
            font-size: 0.95rem;
        }

        /* System Requirements */
        .requirements-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }

        .req-box {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
        }

        /* CMS News List */
        .news-list {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 2.5rem;
        }

        .news-main .news-item {
            display: flex;
            gap: 1.25rem;
            padding: 1.25rem;
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: 1rem;
            margin-bottom: 1rem;
            transition: all 0.25s;
        }

        .news-item:hover {
            border-color: var(--accent-blue);
        }

        .news-thumb {
            width: 100px;
            height: 85px;
            border-radius: 0.75rem;
            object-fit: cover;
        }

        .news-title {
            font-weight: 700;
            margin-bottom: 0.3rem;
            color: var(--text-primary);
            text-decoration: none;
        }

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

        .news-sidebar {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.5rem;
        }

        /* Footer */
        .site-footer {
            background: rgba(10, 14, 26, 0.95);
            border-top: 1px solid var(--border-glass);
            padding: 3rem 0 1.5rem;
            margin-top: var(--spacing-section);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            text-decoration: none;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(18, 24, 48, 0.8);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.25);
            transition: all 0.3s ease;
            cursor: pointer;
            animation: floatFab 3s ease-in-out infinite;
        }

        .fab:hover {
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.5);
            transform: scale(1.08);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .hero-right {
                order: -1;
                transform: none;
            }
            .hero-left {
                transform: none;
            }
            .feature-block {
                grid-template-columns: 1fr;
            }
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .desktop-nav,
            .nav-actions {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .mobile-nav.active {
                display: flex;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2rem;
            }
            .requirements-grid {
                grid-template-columns: 1fr;
            }
            .platform-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #12172B;
            --bg-card: rgba(18, 24, 48, 0.65);
            --accent-blue: #3B82F6;
            --accent-cyan: #06B6D4;
            --accent-glow: #2563EB;
            --text-primary: #F0F4FF;
            --text-secondary: #A5B4D4;
            --text-muted: #6B7FA8;
            --border-glass: rgba(59, 130, 246, 0.2);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --spacing-section: 5rem;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent-blue);
            font-size: 1.5rem;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 1.75rem;
        }
        .desktop-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            position: relative;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            color: var(--text-primary);
        }
        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--accent-blue);
            border-radius: 4px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }
        .btn-login:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }
        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(18, 23, 43, 0.96);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            gap: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
        }
        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
        }
        .mobile-nav .nav-actions-mobile {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }
        .article-hero {
            padding: 8rem 0 3rem;
            position: relative;
            background: linear-gradient(180deg, rgba(10,14,26,0) 0%, rgba(10,14,26,1) 100%), url('/assets/images/backpic/back-6.jpg') center/cover no-repeat;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10,14,26,0.92) 0%, rgba(10,14,26,0.45) 100%);
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
            max-width: 880px;
            padding-bottom: 2rem;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.25rem;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--accent-blue);
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .breadcrumb i {
            font-size: 0.65rem;
            opacity: 0.6;
        }
        .article-category-badge {
            display: inline-block;
            background: rgba(6, 182, 212, 0.15);
            border: 1px solid rgba(6, 182, 212, 0.35);
            padding: 0.3rem 1rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }
        .article-meta i {
            font-size: 0.85rem;
            color: var(--accent-blue);
        }
        .article-body-section {
            padding: 3.5rem 0 var(--spacing-section);
        }
        .article-body-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 3rem;
            align-items: start;
        }
        .article-main-content {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            padding: 2.75rem;
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
            box-shadow: 0 12px 35px rgba(0,0,0,0.25);
        }
        .article-main-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 2rem 0 1rem;
            line-height: 1.3;
            border-left: 4px solid var(--accent-blue);
            padding-left: 1.25rem;
        }
        .article-main-content h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 1.75rem 0 0.75rem;
        }
        .article-main-content p {
            margin-bottom: 1.25rem;
        }
        .article-main-content ul, .article-main-content ol {
            margin: 1rem 0 1.5rem 1.25rem;
        }
        .article-main-content li {
            margin-bottom: 0.5rem;
        }
        .article-main-content img {
            max-width: 100%;
            border-radius: 0.85rem;
            margin: 1.5rem 0;
            border: 1px solid var(--border-glass);
        }
        .article-main-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            font-weight: 500;
        }
        .article-main-content blockquote {
            background: rgba(6, 182, 212, 0.08);
            border-left: 4px solid var(--accent-cyan);
            padding: 1.25rem 1.5rem;
            border-radius: 0 0.75rem 0.75rem 0;
            margin: 1.5rem 0;
            font-style: italic;
            color: #cbd5e1;
        }
        .article-not-found {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            padding: 4rem 2rem;
            text-align: center;
            color: var(--text-secondary);
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--text-muted);
            margin-bottom: 1.25rem;
        }
        .article-not-found h2 {
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            padding: 1.75rem;
        }
        .sidebar-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.25rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border-glass);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card h4 i {
            color: var(--accent-cyan);
        }
        .sidebar-game-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.85rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.04);
            transition: background 0.2s;
            border-radius: 0.5rem;
            padding: 0.75rem;
            cursor: pointer;
        }
        .sidebar-game-item:hover {
            background: rgba(59,130,246,0.08);
        }
        .sidebar-game-thumb {
            width: 52px;
            height: 52px;
            border-radius: 0.65rem;
            background: var(--bg-secondary);
            overflow: hidden;
            flex-shrink: 0;
        }
        .sidebar-game-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .sidebar-game-info {
            flex: 1;
        }
        .sidebar-game-info h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.15rem;
        }
        .sidebar-game-info span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, rgba(37,99,235,0.25), rgba(6,182,212,0.15));
            border: 1px solid rgba(59,130,246,0.4);
            border-radius: var(--radius-card);
            padding: 2rem;
            text-align: center;
        }
        .sidebar-cta i {
            font-size: 2.4rem;
            color: var(--accent-cyan);
            margin-bottom: 0.75rem;
        }
        .sidebar-cta h4 {
            color: var(--text-primary);
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .sidebar-cta p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1.25rem;
        }
        .btn-cta-sidebar {
            background: var(--accent-blue);
            color: #fff;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 0 18px rgba(37,99,235,0.4);
            transition: all 0.2s;
        }
        .btn-cta-sidebar:hover {
            background: #2563EB;
            box-shadow: 0 0 28px rgba(37,99,235,0.6);
            transform: translateY(-2px);
        }
        .related-section {
            padding: 3.5rem 0 var(--spacing-section);
            background: var(--bg-secondary);
        }
        .related-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 2.5rem;
            color: var(--text-primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
            overflow: hidden;
            transition: all 0.3s ease;
            text-decoration: none;
            color: inherit;
            display: block;
        }
        .related-card:hover {
            border-color: rgba(59,130,246,0.5);
            transform: translateY(-4px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.3);
        }
        .related-card-img {
            height: 180px;
            overflow: hidden;
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.05);
        }
        .related-card-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }
        .related-card-body h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.35;
        }
        .related-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .newsletter-section {
            padding: 4rem 0;
            background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(6,182,212,0.08));
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }
        .newsletter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 3rem;
        }
        .newsletter-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        .newsletter-text p {
            color: var(--text-secondary);
        }
        .newsletter-form {
            display: flex;
            gap: 0.75rem;
            min-width: 360px;
        }
        .newsletter-form input {
            flex: 1;
            padding: 0.75rem 1.25rem;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-glass);
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 0.95rem;
            outline: none;
        }
        .newsletter-form input:focus {
            border-color: var(--accent-blue);
            box-shadow: 0 0 12px rgba(37,99,235,0.25);
        }
        .newsletter-form button {
            background: var(--accent-blue);
            color: #fff;
            border: none;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            cursor: pointer;
            transition: all 0.2s;
        }
        .newsletter-form button:hover {
            background: #2563EB;
            box-shadow: 0 0 20px rgba(37,99,235,0.5);
        }
        .site-footer {
            background: var(--bg-secondary);
            padding: 3.5rem 0 1.5rem;
            border-top: 1px solid var(--border-glass);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-col h4 {
            color: var(--text-primary);
            font-weight: 700;
            margin-bottom: 1.25rem;
            font-size: 1rem;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 0.65rem;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .mobile-nav.active {
                display: flex;
            }
            .article-body-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .newsletter-inner {
                flex-direction: column;
                text-align: center;
            }
            .newsletter-form {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .article-hero h1 {
                font-size: 1.9rem;
            }
            .article-main-content {
                padding: 1.5rem;
                font-size: 0.95rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-kpis {
                flex-wrap: wrap;
                gap: 1.5rem;
            }
            .article-meta {
                gap: 1rem;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.55rem;
            }
            .header-inner {
                height: 60px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 0.45rem 0.9rem;
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #12172B;
            --bg-card: rgba(18, 24, 48, 0.65);
            --accent-blue: #3B82F6;
            --accent-cyan: #06B6D4;
            --accent-glow: #2563EB;
            --text-primary: #F0F4FF;
            --text-secondary: #A5B4D4;
            --text-muted: #6B7FA8;
            --border-glass: rgba(59, 130, 246, 0.2);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --spacing-section: 5rem;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.3s ease;
        }

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

        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 1.75rem;
        }

        .desktop-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            position: relative;
        }

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

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--accent-blue);
            border-radius: 4px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

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

        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(18, 23, 43, 0.96);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            gap: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
        }

        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
        }

        .mobile-nav .nav-actions-mobile {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }

        /* Buttons */
        .btn-primary {
            background: var(--accent-blue);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.25s ease;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.35);
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(6, 182, 212, 0.08);
        }

        /* Glass Cards */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
            transition: all 0.3s ease;
        }

        .glass-card:hover {
            border-color: rgba(59, 130, 246, 0.45);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        /* Section Titles */
        .section-title {
            font-size: 2rem;
            font-weight: 750;
            margin-bottom: 1rem;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 3rem;
            line-height: 1.7;
        }

        /* Badge */
        .badge {
            display: inline-block;
            background: rgba(6, 182, 212, 0.15);
            border: 1px solid rgba(6, 182, 212, 0.3);
            padding: 0.3rem 0.9rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .badge-gold {
            background: rgba(245, 158, 11, 0.15);
            border-color: rgba(245, 158, 11, 0.35);
            color: #F59E0B;
        }

        /* KPI */
        .kpi-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-blue);
            line-height: 1;
        }

        .kpi-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Lists */
        .styled-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .styled-list li {
            padding: 0.6rem 0;
            padding-left: 1.8rem;
            position: relative;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .styled-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-cyan);
            position: absolute;
            left: 0;
            top: 0.6rem;
            font-size: 1rem;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            padding: 3.5rem 0 2rem;
            margin-top: var(--spacing-section);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            color: #fff;
        }

        .footer-col a {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            margin-bottom: 0.75rem;
            font-size: 0.92rem;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 2rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

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

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

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

            .hero-right {
                order: -1;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }

            .header-inner .logo {
                font-size: 1.1rem;
            }

            .nav-actions {
                display: none;
            }

            .mobile-nav .nav-actions-mobile {
                display: flex;
            }
        }

        /* Category Page Specific */
        .compare-table-highlight {
            border: 2px solid var(--accent-blue);
            background: rgba(37, 99, 235, 0.08);
            border-radius: var(--radius-card);
            position: relative;
        }

        .compare-table-highlight::before {
            content: 'ĐỀ XUẤT HÀNG ĐẦU';
            position: absolute;
            top: -14px;
            right: 20px;
            background: var(--accent-blue);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.3rem 1rem;
            border-radius: 1rem;
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.5);
        }

        .step-number {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            flex-shrink: 0;
        }

        .news-card {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            transition: all 0.25s ease;
        }

        .news-card:hover {
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: var(--shadow-glow);
        }

        .news-card img {
            width: 180px;
            height: 120px;
            object-fit: cover;
            border-radius: 0.75rem;
            flex-shrink: 0;
        }

        @media (max-width: 640px) {
            .news-card {
                flex-direction: column;
            }

            .news-card img {
                width: 100%;
                height: 200px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #12172B;
            --bg-card: rgba(18, 24, 48, 0.65);
            --accent-blue: #3B82F6;
            --accent-cyan: #06B6D4;
            --accent-glow: #2563EB;
            --text-primary: #F0F4FF;
            --text-secondary: #A5B4D4;
            --text-muted: #6B7FA8;
            --border-glass: rgba(59, 130, 246, 0.2);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --spacing-section: 5rem;
        }

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.3s ease;
        }

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

        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 1.75rem;
        }

        .desktop-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            position: relative;
        }

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

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--accent-blue);
            border-radius: 4px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

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

        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(18, 23, 43, 0.96);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            gap: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
        }

        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
        }

        .mobile-nav .nav-actions-mobile {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }

        /* Hero Banner */
        .hero-banner {
            padding: 9rem 0 4rem;
            background: linear-gradient(135deg, #0A0E1A 0%, #12172B 50%, #0F172A 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-banner-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            letter-spacing: -0.5px;
        }

        .hero-banner-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .hero-banner-stats {
            display: flex;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }

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

        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

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

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            color: #fff;
            padding: 0.9rem 2.2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
            transition: all 0.3s ease;
            font-size: 1rem;
        }

        .btn-cta:hover {
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.65);
            transform: translateY(-2px);
        }

        .hero-banner-image {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-glow);
        }

        .hero-banner-image img {
            width: 100%;
            height: auto;
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 3rem;
        }

        /* Rating Cards */
        .rating-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 1.75rem;
        }

        .rating-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
            transition: all 0.3s ease;
        }

        .rating-card:hover {
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
            transform: translateY(-4px);
        }

        .rating-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 1.25rem;
        }

        .rating-name {
            font-size: 1.3rem;
            font-weight: 700;
        }

        .rating-score {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-glow));
            color: #fff;
            padding: 0.35rem 0.85rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .rating-stars {
            color: #F59E0B;
            margin-bottom: 0.75rem;
            letter-spacing: 1px;
        }

        .rating-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }

        .rating-features {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem 0;
        }

        .rating-features li {
            padding: 0.45rem 0;
            color: var(--text-muted);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .rating-features li i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }

        .btn-rating {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--accent-blue);
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            text-decoration: none;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }

        .btn-rating:hover {
            background: var(--accent-blue);
            color: #fff;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.4);
        }

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

        .criteria-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.75rem;
            text-align: left;
        }

        .criteria-icon {
            width: 52px;
            height: 52px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-blue);
            margin-bottom: 1rem;
        }

        .criteria-item h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

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

        /* Comparison Table */
        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-glass);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .comparison-table thead {
            background: rgba(37, 99, 235, 0.12);
        }

        .comparison-table th {
            padding: 1.1rem 1.25rem;
            text-align: left;
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            border-bottom: 1px solid var(--border-glass);
        }

        .comparison-table td {
            padding: 1rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(59, 130, 246, 0.08);
        }

        .comparison-table tbody tr:hover {
            background: rgba(37, 99, 235, 0.05);
        }

        .badge-check {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            color: #10B981;
            font-weight: 600;
        }

        .badge-warn {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            color: #F59E0B;
            font-weight: 600;
        }

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

        .flow-step {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem 1.5rem;
            position: relative;
        }

        .flow-step-number {
            width: 40px;
            height: 40px;
            background: var(--accent-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .flow-step h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
        }

        .flow-step p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }

        /* Article List */
        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.5rem;
        }

        .article-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .article-card:hover {
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
            transform: translateY(-3px);
        }

        .article-card-image {
            height: 180px;
            overflow: hidden;
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-card-body {
            padding: 1.5rem;
        }

        .article-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .article-card-body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .article-card-body a {
            color: var(--accent-blue);
            font-weight: 600;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

        .article-card-body a:hover {
            color: var(--accent-cyan);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: 0.85rem;
            padding: 1.5rem;
            margin-bottom: 1rem;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.5);
        }

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            color: var(--text-secondary);
            margin-top: 0.75rem;
            font-size: 0.92rem;
            line-height: 1.65;
            display: none;
        }

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

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            transition: transform 0.3s ease;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, #12172B 0%, rgba(37, 99, 235, 0.18) 100%);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 3.5rem 2rem;
            text-align: center;
        }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .cta-banner p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
            font-size: 1.05rem;
        }

        /* Footer */
        .site-footer {
            background: #0A0E1A;
            border-top: 1px solid var(--border-glass);
            padding: 3.5rem 0 1.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        .footer-col h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 0.35rem 0;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

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

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

            .section-title {
                font-size: 1.7rem;
            }

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

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

            .nav-actions {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .mobile-nav.active {
                display: flex;
            }

            .hero-banner {
                padding: 7rem 0 3rem;
            }

            .hero-banner-content h1 {
                font-size: 1.8rem;
            }

            .hero-banner-stats {
                flex-wrap: wrap;
                gap: 1.5rem;
            }

            .section {
                padding: 3rem 0;
            }

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

        @media (max-width: 520px) {
            .hero-banner-content h1 {
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

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

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

/* roulang page: category3 */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #12172B;
            --bg-card: rgba(18, 24, 48, 0.65);
            --accent-blue: #3B82F6;
            --accent-cyan: #06B6D4;
            --accent-glow: #2563EB;
            --text-primary: #F0F4FF;
            --text-secondary: #A5B4D4;
            --text-muted: #6B7FA8;
            --border-glass: rgba(59, 130, 246, 0.2);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --spacing-section: 5rem;
        }
        
        * {
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        
        a {
            color: inherit;
            text-decoration: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        button {
            cursor: pointer;
            font-family: inherit;
        }
        
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.3s ease;
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        
        .logo i {
            color: var(--accent-blue);
            font-size: 1.5rem;
        }
        
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 1.75rem;
        }
        
        .desktop-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        
        .desktop-nav a:hover,
        .desktop-nav a.active {
            color: var(--text-primary);
        }
        
        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--accent-blue);
            border-radius: 4px;
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }
        
        .btn-login:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }
        
        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(18, 23, 43, 0.96);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            gap: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
        }
        
        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
        }
        
        .mobile-nav .nav-actions-mobile {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }
        
        .page-header-banner {
            padding: 8rem 0 3rem;
            background: linear-gradient(180deg, rgba(18, 23, 43, 0.9) 0%, var(--bg-primary) 100%);
            position: relative;
            border-bottom: 1px solid var(--border-glass);
        }
        
        .page-h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        
        .page-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }
        
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        
        .promo-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }
        
        .promo-card::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -40%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .promo-card:hover {
            transform: translateY(-6px);
            border-color: rgba(59, 130, 246, 0.45);
            box-shadow: var(--shadow-glow);
        }
        
        .promo-tag {
            display: inline-block;
            background: linear-gradient(135deg, #F59E0B, #D97706);
            color: #000;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 0.3rem 1rem;
            border-radius: 2rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 1rem;
        }
        
        .promo-tag.vip {
            background: linear-gradient(135deg, #8B5CF6, #6D28D9);
            color: #fff;
        }
        
        .promo-tag.new {
            background: linear-gradient(135deg, #10B981, #059669);
            color: #fff;
        }
        
        .promo-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }
        
        .promo-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
        
        .promo-value {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 800;
            color: #FBBF24;
            margin-bottom: 1.25rem;
            position: relative;
            z-index: 1;
        }
        
        .promo-value i {
            font-size: 1.2rem;
            color: #F59E0B;
        }
        
        .btn-promo {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            color: #fff;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all 0.25s ease;
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
        }
        
        .btn-promo:hover {
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-2px);
        }
        
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        
        .step-item {
            text-align: center;
            padding: 2rem 1.5rem;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }
        
        .step-item:hover {
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
        }
        
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
            border-radius: 50%;
            margin-bottom: 1rem;
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
        }
        
        .step-item h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
        }
        
        .step-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        
        .comparison-section {
            margin: 3rem 0;
        }
        
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        
        .comparison-table th {
            background: rgba(59, 130, 246, 0.12);
            padding: 1.2rem 1.5rem;
            font-weight: 700;
            text-align: left;
            border-bottom: 1px solid var(--border-glass);
            font-size: 0.95rem;
        }
        
        .comparison-table td {
            padding: 1rem 1.5rem;
            border-bottom: 1px solid rgba(59, 130, 246, 0.08);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        
        .comparison-table .highlight {
            color: #10B981;
            font-weight: 600;
        }
        
        .bonus-banner {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
            border: 1px solid rgba(139, 92, 246, 0.35);
            border-radius: var(--radius-card);
            padding: 2.5rem;
            margin: 3rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .bonus-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        
        .bonus-banner h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }
        
        .bonus-banner p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
            font-size: 1.05rem;
        }
        
        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        
        .news-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .news-card:hover {
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
        }
        
        .news-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        
        .news-card-body {
            padding: 1.25rem;
        }
        
        .news-card-body h4 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        
        .news-card-body .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        .faq-section {
            margin: 4rem 0;
        }
        
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            margin-bottom: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.45);
        }
        
        .faq-item h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .faq-item h4 i {
            color: var(--accent-blue);
            font-size: 0.9rem;
        }
        
        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        
        .cta-strip {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(6, 182, 212, 0.15));
            border: 1px solid rgba(59, 130, 246, 0.35);
            border-radius: var(--radius-card);
            padding: 2.5rem;
            margin: 4rem 0 2rem;
            text-align: center;
        }
        
        .cta-strip h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
        }
        
        .cta-strip p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }
        
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }
        
        .footer-col a:hover {
            color: var(--accent-blue);
        }
        
        .footer-bottom {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1.5rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 40;
            width: 3.5rem;
            height: 3.5rem;
            background: linear-gradient(135deg, #3B82F6, #1D4ED8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.45);
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        
        .fab-left:hover {
            box-shadow: 0 0 35px rgba(37, 99, 235, 0.7);
            transform: scale(1.08);
        }
        
        .fab-left .badge-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: pulse-dot 2s infinite;
        }
        
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .mobile-nav.active {
                display: flex;
            }
            .page-h1 {
                font-size: 2rem;
            }
            .promo-grid {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-table {
                font-size: 0.85rem;
            }
            .comparison-table th,
            .comparison-table td {
                padding: 0.75rem;
            }
        }
        
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .nav-actions {
                display: none;
            }
            .nav-actions-mobile {
                display: flex;
            }
            .page-h1 {
                font-size: 1.65rem;
            }
            .steps-flow {
                grid-template-columns: 1fr;
            }
            .bonus-banner {
                padding: 1.5rem;
            }
            .bonus-banner h3 {
                font-size: 1.35rem;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .cta-strip {
                padding: 1.5rem;
            }
            .cta-strip h2 {
                font-size: 1.35rem;
            }
            .comparison-table {
                display: block;
                overflow-x: auto;
            }
        }
        
        @media (max-width: 520px) {
            .page-h1 {
                font-size: 1.4rem;
            }
            .promo-card {
                padding: 1.25rem;
            }
            .fab-left {
                width: 3rem;
                height: 3rem;
                font-size: 1.1rem;
                left: 1rem;
                bottom: 5rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #12172B;
            --bg-card: rgba(18, 24, 48, 0.65);
            --accent-blue: #3B82F6;
            --accent-cyan: #06B6D4;
            --accent-glow: #2563EB;
            --text-primary: #F0F4FF;
            --text-secondary: #A5B4D4;
            --text-muted: #6B7FA8;
            --border-glass: rgba(59, 130, 246, 0.2);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.25);
            --radius-card: 1.25rem;
            --radius-btn: 0.75rem;
            --spacing-section: 5rem;
        }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 50;
            background: rgba(10, 14, 26, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-glass);
            transition: background 0.3s ease;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent-blue);
            font-size: 1.5rem;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 1.75rem;
        }
        .desktop-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            position: relative;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            color: var(--text-primary);
        }
        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2.5px;
            background: var(--accent-blue);
            border-radius: 4px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }
        .btn-login:hover {
            border-color: var(--accent-blue);
            color: #fff;
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.35rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            transition: all 0.25s ease;
            font-size: 0.9rem;
        }
        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: rgba(18, 23, 43, 0.96);
            backdrop-filter: blur(20px);
            padding: 1.5rem;
            gap: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
        }
        .mobile-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
        }
        .mobile-nav .nav-actions-mobile {
            display: flex;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2rem;
            transition: all 0.3s ease;
        }
        .glass-card:hover {
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-glow));
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.25s ease;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.35);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(37, 99, 235, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--accent-blue);
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.25s ease;
        }
        .btn-outline:hover {
            background: rgba(59, 130, 246, 0.1);
            color: #fff;
        }
        .badge {
            display: inline-block;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.35);
            padding: 0.35rem 1rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            color: var(--accent-blue);
            font-weight: 600;
        }
        .badge-green {
            background: rgba(16, 185, 129, 0.15);
            border-color: rgba(16, 185, 129, 0.35);
            color: #10B981;
        }
        .badge-orange {
            background: rgba(245, 158, 11, 0.15);
            border-color: rgba(245, 158, 11, 0.35);
            color: #F59E0B;
        }
        .kpi-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .kpi-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
        }
        .step-number {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-glow));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .platform-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-card);
            padding: 2.5rem 2rem;
            text-align: center;
            transition: all 0.3s ease;
        }
        .platform-card i {
            font-size: 3rem;
            margin-bottom: 1.25rem;
            color: var(--accent-blue);
        }
        .platform-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.2);
            transform: translateY(-4px);
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-glass);
            padding: 4rem 0 2rem;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-primary);
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 0.7rem;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--accent-blue);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid var(--border-glass);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-glass);
            padding: 1.5rem 0;
            cursor: pointer;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
        }
        .faq-answer {
            color: var(--text-secondary);
            margin-top: 0.75rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--accent-blue);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--text-muted);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .mobile-nav.active {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-actions {
                display: none;
            }
            .header-inner .nav-actions {
                display: none;
            }
            .mobile-nav .nav-actions-mobile {
                display: flex;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }