/* roulang page: index */
:root {
            --primary: #8B0000;
            --primary-dark: #4A0007;
            --primary-deep: #2B0004;
            --accent-gold: #FFD700;
            --accent-amber: #FF9F00;
            --accent-red: #D32F2F;
            --text-white: #FFFDF9;
            --text-gold: #FEF08A;
            --text-muted: #E8C9A0;
            --bg-dark: #1A0A0C;
            --bg-card: #2A0F13;
            --border-gold: rgba(255, 215, 0, 0.35);
            --shadow-gold: 0 8px 24px rgba(255, 215, 0, 0.12);
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 80px;
            --font-base: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            background-color: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-amber);
            text-decoration: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }
        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }
        /* Header & Nav */
        .site-header {
            background: rgba(26, 10, 12, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(26, 10, 12, 0.99);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) 0;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .navbar-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            white-space: nowrap;
        }
        .navbar-logo i {
            font-size: 1.5rem;
            color: var(--accent-gold);
        }
        .navbar-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .navbar-links a {
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .navbar-links a:hover,
        .navbar-links a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.1);
        }
        .navbar-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 3px;
        }
        .navbar-auth {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }
        .btn-login {
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: var(--primary-dark);
            border: none;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.35);
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5);
            background: linear-gradient(135deg, #FFE54C, #FFB300);
            color: var(--primary-dark);
        }
        .navbar-toggler {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 6px 10px;
            border-radius: 8px;
            font-size: 1.2rem;
            display: none;
        }
        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-dark) 35%, var(--bg-dark) 100%);
            position: relative;
            overflow: hidden;
            padding: var(--spacing-xxl) 0;
            border-bottom: 1px solid var(--border-gold);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            background: rgba(255, 215, 0, 0.12);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            width: fit-content;
        }
        .hero-title {
            font-size: clamp(2.2rem, 5.5vw, 3.8rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--text-white);
            max-width: 850px;
        }
        .hero-title .highlight {
            color: var(--accent-gold);
            text-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
        }
        .hero-description {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
        }
        .hero-cta-group {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-top: var(--spacing-xs);
        }
        .btn-hero-primary {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: var(--primary-dark);
            border: none;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 800;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(255, 215, 0, 0.4);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 215, 0, 0.55);
            background: linear-gradient(135deg, #FFE54C, #FFB300);
            color: var(--primary-dark);
        }
        .btn-hero-secondary {
            background: transparent;
            color: var(--text-white);
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            padding: 14px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-sm);
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .hero-poster {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            min-height: 280px;
            width: 100%;
            position: relative;
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: flex-end;
            padding: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .hero-poster-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 10, 12, 0.9) 0%, rgba(26, 10, 12, 0.3) 50%, rgba(26, 10, 12, 0.1) 100%);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }
        .hero-poster-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .hero-poster-badge {
            background: var(--accent-red);
            color: white;
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 800;
            font-size: 0.8rem;
            letter-spacing: 0.05em;
        }
        .hero-poster-text {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-white);
        }
        /* Section Headers */
        .section-heading {
            margin-bottom: var(--spacing-lg);
        }
        .section-heading .section-label {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: var(--spacing-xs);
        }
        .section-heading h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
        }
        .section-heading p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 720px;
            line-height: 1.7;
        }
        /* Feature Section */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }
        .feature-card-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            transition: var(--transition);
        }
        .feature-card:hover .feature-card-icon {
            background: var(--accent-gold);
            color: var(--primary-dark);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 0;
        }
        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }
        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.12);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: var(--transition);
        }
        .testimonial-card:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }
        .testimonial-quote {
            font-size: 0.95rem;
            color: var(--text-white);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
            font-style: italic;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--primary-dark);
            font-size: 1rem;
        }
        .testimonial-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-white);
        }
        .testimonial-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* News Section */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-lg);
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.1);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .news-item:hover {
            border-color: var(--border-gold);
            transform: translateX(5px);
            box-shadow: var(--shadow-gold);
        }
        .news-item-content {
            flex: 1;
        }
        .news-item-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-white);
            margin-bottom: 4px;
            display: block;
        }
        .news-item-title:hover {
            color: var(--accent-gold);
        }
        .news-item-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
        }
        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.12);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            height: fit-content;
        }
        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
        }
        .news-sidebar-item {
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .news-sidebar-item:last-child {
            border-bottom: none;
        }
        .news-sidebar-item a {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            display: block;
            transition: var(--transition);
        }
        .news-sidebar-item a:hover {
            color: var(--accent-gold);
        }
        /* FAQ Section */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.12);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-gold);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            padding: var(--spacing-md);
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
            gap: var(--spacing-sm);
        }
        .faq-question:hover {
            color: var(--accent-gold);
        }
        .faq-question i {
            transition: var(--transition);
            font-size: 0.9rem;
            color: var(--accent-gold);
        }
        .faq-answer {
            padding: 0 var(--spacing-md) var(--spacing-md);
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-deep));
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl) var(--spacing-lg);
            border: 1px solid var(--border-gold);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-hero-primary {
            position: relative;
            z-index: 1;
        }
        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            border-top: 1px solid var(--border-gold);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-xs);
            display: block;
        }
        .footer-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.15);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .footer-copy {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-badge {
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
            flex-wrap: wrap;
        }
        .badge-18 {
            background: var(--accent-red);
            color: white;
            padding: 4px 12px;
            border-radius: 50px;
            font-weight: 800;
            font-size: 0.75rem;
            letter-spacing: 0.05em;
        }
        .badge-trust {
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            padding: 4px 12px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.75rem;
            border: 1px solid var(--border-gold);
        }
        /* Floating Action Button */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: var(--primary-dark);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
            transition: var(--transition);
            opacity: 0.7;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.55);
            animation-play-state: paused;
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        .fab-support::after {
            content: '';
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--primary-dark);
            animation: blinkDot 1.5s ease-in-out infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        /* Progress Section */
        .progress-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
        }
        .progress-step {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.12);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            position: relative;
            transition: var(--transition);
        }
        .progress-step:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }
        .progress-step-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-gold);
            opacity: 0.5;
            margin-bottom: var(--spacing-xs);
        }
        .progress-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }
        .progress-step p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
            margin-bottom: var(--spacing-sm);
        }
        .progress-bar-custom {
            height: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 6px;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-amber));
            border-radius: 6px;
            transition: width 1.5s ease;
        }
        /* Data Analysis Section */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-md);
        }
        .data-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 215, 0, 0.12);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            text-align: center;
            transition: var(--transition);
        }
        .data-card:hover {
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-gold);
        }
        .data-card-value {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-xs);
        }
        .data-card-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .data-card-trend {
            color: #4CAF50;
            font-size: 0.85rem;
            font-weight: 700;
            margin-top: var(--spacing-xs);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
        }
        /* Responsive */
        @media (max-width: 992px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .navbar-toggler {
                display: block;
            }
            .navbar-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--bg-dark);
                padding: var(--spacing-sm);
                border-radius: var(--radius-sm);
                border: 1px solid var(--border-gold);
            }
            .navbar-links.show {
                display: flex;
            }
            .navbar-auth {
                margin-left: auto;
            }
            .section-padding {
                padding-top: var(--spacing-lg);
                padding-bottom: var(--spacing-lg);
            }
            .section-padding-lg {
                padding-top: var(--spacing-xl);
                padding-bottom: var(--spacing-xl);
            }
            .hero-stats {
                gap: var(--spacing-md);
            }
            .hero-stat-number {
                font-size: 1.4rem;
            }
            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: var(--spacing-sm);
                padding-right: var(--spacing-sm);
            }
            .navbar-logo {
                font-size: 1.05rem;
            }
            .btn-login, .btn-signup {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-description {
                font-size: 0.95rem;
            }
            .btn-hero-primary, .btn-hero-secondary {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .feature-grid, .testimonial-grid, .progress-steps, .data-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }
            .cta-section {
                padding: var(--spacing-lg) var(--spacing-sm);
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: #0F3823;
            --bg-dark: #062315;
            --accent-gold: #FFD700;
            --accent-gold-light: #FFE55C;
            --accent-red: #D32F2F;
            --accent-red-dark: #B71C1C;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #8FBFB0;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-light: rgba(255, 255, 255, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.15);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-body: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-display: 'Georgia', 'Times New Roman', serif;
        }

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

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

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* ========== HEADER & NAVBAR ========== */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .navbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--accent-gold);
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            transition: color var(--transition-fast);
        }

        .navbar-logo i {
            font-size: 1.6rem;
            color: var(--accent-gold);
            transition: transform var(--transition-base);
        }

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

        .navbar-logo:hover i {
            transform: rotate(15deg) scale(1.1);
        }

        .navbar-toggler {
            background: transparent;
            color: var(--accent-gold);
            font-size: 1.5rem;
            padding: 6px 10px;
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-sm);
            display: none;
            transition: all var(--transition-fast);
        }

        .navbar-toggler:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--accent-gold);
        }

        .navbar-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: var(--spacing-sm);
            margin: 0;
            padding: 0;
        }

        .navbar-links li a {
            display: block;
            padding: 8px 16px;
            color: var(--text-mint);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .navbar-links li a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }

        .navbar-links li a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.12);
            font-weight: 600;
        }

        .navbar-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        .navbar-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-login {
            background: transparent;
            color: var(--text-mint);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #FFC107);
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 12px rgba(255, 215, 0, 0.35);
            transition: all var(--transition-fast);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.5);
            background: linear-gradient(135deg, #FFE55C, #FFD700);
        }

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

        /* ========== ARTICLE BREADCRUMB ========== */
        .breadcrumb-wrapper {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--text-mint);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb-nav .separator {
            color: var(--accent-gold);
            font-weight: 700;
        }

        .breadcrumb-nav .current {
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            background: linear-gradient(160deg, var(--bg-secondary) 0%, var(--bg-dark) 100%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
            max-width: 850px;
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--border-gold);
            margin-bottom: var(--spacing-sm);
        }

        .article-tag i {
            font-size: 0.75rem;
        }

        .article-hero h1 {
            font-family: var(--font-display);
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.3;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-top: var(--spacing-sm);
        }

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

        .article-meta i {
            color: var(--accent-gold);
            font-size: 0.8rem;
        }

        /* ========== ARTICLE BODY ========== */
        .article-body-wrapper {
            padding: var(--spacing-xl) 0;
            background: var(--bg-primary);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-lg);
            align-items: start;
        }

        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
        }

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

        .article-main .article-content h2 {
            font-family: var(--font-display);
            font-size: 1.6rem;
            color: var(--accent-gold);
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
            font-weight: 700;
            line-height: 1.4;
        }

        .article-main .article-content h3 {
            font-size: 1.25rem;
            color: var(--text-white);
            margin-top: var(--spacing-md);
            margin-bottom: var(--spacing-xs);
            font-weight: 600;
            line-height: 1.4;
        }

        .article-main .article-content p {
            margin-bottom: var(--spacing-sm);
        }

        .article-main .article-content ul,
        .article-main .article-content ol {
            margin-bottom: var(--spacing-sm);
            padding-left: var(--spacing-lg);
        }

        .article-main .article-content li {
            margin-bottom: 8px;
        }

        .article-main .article-content blockquote {
            background: rgba(255, 215, 0, 0.08);
            border-left: 4px solid var(--accent-gold);
            padding: var(--spacing-sm) var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-mint);
        }

        .article-main .article-content img {
            border-radius: var(--radius-md);
            margin: var(--spacing-sm) 0;
            box-shadow: var(--shadow-sm);
        }

        .article-not-found {
            text-align: center;
            padding: var(--spacing-xl) 0;
            color: var(--text-muted);
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            display: block;
        }

        .article-not-found h2 {
            font-family: var(--font-display);
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }

        .btn-back-home {
            display: inline-block;
            margin-top: var(--spacing-sm);
            background: linear-gradient(135deg, var(--accent-gold), #FFC107);
            color: var(--bg-dark);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
            color: var(--bg-dark);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-widget h3 {
            font-family: var(--font-display);
            font-size: 1.15rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            font-weight: 700;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-gold);
        }

        .sidebar-widget ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-widget ul li {
            margin-bottom: 10px;
        }

        .sidebar-widget ul li a {
            color: var(--text-mint);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition-fast);
            padding: 6px 8px;
            border-radius: var(--radius-sm);
        }

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

        .sidebar-widget ul li a:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
            padding-left: 12px;
        }

        .sidebar-widget .widget-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .sidebar-tip {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.12) 0%, rgba(255, 215, 0, 0.05) 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-gold);
        }

        .sidebar-tip h3 {
            color: var(--accent-gold);
            font-family: var(--font-display);
            font-size: 1.1rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-tip p {
            color: var(--text-mint);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }

        /* ========== RELATED ARTICLES ========== */
        .related-articles {
            padding: var(--spacing-xl) 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-light);
        }

        .related-articles h2 {
            font-family: var(--font-display);
            font-size: 1.8rem;
            color: var(--text-white);
            margin-bottom: var(--spacing-lg);
            text-align: center;
            font-weight: 700;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            display: block;
            color: var(--text-white);
        }

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

        .related-card h3 {
            font-size: 1.05rem;
            color: var(--accent-gold);
            margin-bottom: 8px;
            font-weight: 600;
            line-height: 1.4;
        }

        .related-card p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 0;
            line-height: 1.5;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-secondary) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-lg);
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            font-family: var(--font-display);
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            font-weight: 700;
        }

        .cta-box p {
            color: var(--text-mint);
            font-size: 1rem;
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }

        .cta-buttons {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-gold), #FFC107);
            color: var(--bg-dark);
            font-weight: 700;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.4);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.55);
        }

        .btn-cta-secondary {
            background: transparent;
            color: var(--text-mint);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 2px solid var(--border-gold);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

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

        .footer-brand {
            display: block;
            color: var(--accent-gold);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            font-family: var(--font-display);
        }

        .footer-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }

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

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

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

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

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

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

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

        .badge-18 {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent-red);
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.85rem;
            border-radius: 50%;
            border: 2px solid var(--text-white);
        }

        .badge-trust {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            font-size: 0.8rem;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 12px;
            border-radius: 20px;
            border: 1px solid var(--border-light);
        }

        .badge-trust i {
            color: var(--accent-gold);
            font-size: 0.75rem;
        }

        /* ========== FAB ========== */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            opacity: 0.7;
            transition: all var(--transition-base);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
        }

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

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--bg-dark);
            animation: fabBlink 1.5s ease-in-out infinite;
        }

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

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

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

            .article-sidebar {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }

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

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

        @media (max-width: 768px) {
            .navbar {
                flex-wrap: wrap;
            }

            .navbar-toggler {
                display: block;
            }

            .navbar-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: var(--spacing-sm) 0;
                gap: 4px;
            }

            .navbar-links.open {
                display: flex;
            }

            .navbar-links li a {
                padding: 10px 16px;
            }

            .navbar-auth {
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }

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

            .article-main {
                padding: var(--spacing-md);
            }

            .article-main .article-content {
                font-size: 0.95rem;
            }

            .article-main .article-content h2 {
                font-size: 1.35rem;
            }

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

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

            .cta-box {
                padding: var(--spacing-md);
            }

            .cta-box h2 {
                font-size: 1.4rem;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

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

            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }

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

            .navbar-logo {
                font-size: 1.1rem;
            }

            .navbar-logo i {
                font-size: 1.3rem;
            }

            .article-hero h1 {
                font-size: 1.5rem;
            }

            .article-meta {
                font-size: 0.75rem;
                gap: 8px;
            }

            .article-main {
                padding: var(--spacing-sm);
                border-radius: var(--radius-md);
            }

            .article-main .article-content {
                font-size: 0.9rem;
                line-height: 1.65;
            }

            .article-main .article-content h2 {
                font-size: 1.2rem;
            }

            .article-main .article-content h3 {
                font-size: 1.05rem;
            }

            .cta-box h2 {
                font-size: 1.2rem;
            }

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

            .btn-cta-primary,
            .btn-cta-secondary {
                width: 100%;
                text-align: center;
            }

            .btn-login,
            .btn-signup {
                padding: 6px 10px;
                font-size: 0.75rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-tertiary: #0B3C25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A8C4B8;
            --border-gold: rgba(255, 215, 0, 0.45);
            --border-soft: rgba(255, 255, 255, 0.1);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.15);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 12px 40px rgba(255, 215, 0, 0.2);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
            --font-display: 'Be Vietnam Pro', 'Inter', sans-serif;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition);
        }
        
        a:hover {
            color: #FFE55C;
        }
        
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        
        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 46, 28, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            padding: 0;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
        }
        
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 14px 0;
            flex-wrap: nowrap;
        }
        
        .navbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-gold);
            white-space: nowrap;
            letter-spacing: -0.02em;
        }
        
        .navbar-logo i {
            font-size: 1.6rem;
            color: var(--accent-gold);
        }
        
        .navbar-logo:hover {
            color: #FFE55C;
        }
        
        .navbar-toggler {
            display: none;
            background: transparent;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 1.3rem;
            padding: 8px 12px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .navbar-toggler:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        
        .navbar-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }
        
        .navbar-links li {
            margin: 0;
        }
        
        .navbar-links a {
            display: block;
            padding: 8px 14px;
            border-radius: 50px;
            color: var(--text-mint);
            font-weight: 500;
            font-size: 0.92rem;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        
        .navbar-links a:hover {
            color: var(--text-white);
            background: rgba(255, 215, 0, 0.08);
        }
        
        .navbar-links a.active {
            color: var(--bg-primary);
            background: var(--accent-gold);
            font-weight: 600;
            box-shadow: 0 2px 12px rgba(255, 215, 0, 0.35);
        }
        
        .navbar-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            padding: 9px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        
        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.45);
        }
        
        .btn-signup {
            background: var(--accent-gold);
            border: none;
            color: var(--bg-primary);
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 14px rgba(255, 215, 0, 0.3);
        }
        
        .btn-signup:hover {
            background: #FFE55C;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.45);
        }
        
        /* ===== Hero / Banner ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-soft);
        }
        
        .page-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(210, 47, 47, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            position: relative;
            z-index: 2;
        }
        
        .hero-breadcrumb a {
            color: var(--accent-gold);
        }
        
        .hero-breadcrumb i {
            font-size: 0.65rem;
        }
        
        .hero-title {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 2.4rem;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-mint);
            max-width: 680px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }
        
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 22px;
            position: relative;
            z-index: 2;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
        }
        
        /* ===== Section Common ===== */
        .section-block {
            padding: 60px 0;
        }
        
        .section-block.alt-bg {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-gold);
            margin-bottom: 10px;
        }
        
        .section-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--text-white);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        
        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 700px;
        }
        
        /* ===== Metrics / Stats ===== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 18px;
            margin-top: 30px;
        }
        
        .metric-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            transition: var(--transition);
        }
        
        .metric-item:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }
        
        .metric-number {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 2rem;
            color: var(--accent-gold);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        
        .metric-label {
            font-size: 0.88rem;
            color: var(--text-mint);
            font-weight: 500;
        }
        
        /* ===== Info Cards / Service Matrix ===== */
        .info-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 22px;
            margin-top: 28px;
        }
        
        .info-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-red));
            opacity: 0;
            transition: var(--transition);
        }
        
        .info-card:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        
        .info-card:hover::before {
            opacity: 1;
        }
        
        .info-card-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.3rem;
            margin-bottom: 16px;
        }
        
        .info-card h3 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        
        .info-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        /* ===== Comparison / Result ===== */
        .comparison-panel {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-top: 28px;
        }
        
        .comparison-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }
        
        .comparison-col {
            padding: 28px 26px;
        }
        
        .comparison-col:first-child {
            border-right: 1px solid var(--border-soft);
            background: rgba(255, 255, 255, 0.02);
        }
        
        .comparison-col h4 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--accent-gold);
            margin-bottom: 14px;
        }
        
        .comparison-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .comparison-col li {
            padding: 8px 0;
            color: var(--text-mint);
            font-size: 0.9rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        
        .comparison-col li:last-child {
            border-bottom: none;
        }
        
        .comparison-col li i {
            color: var(--accent-gold);
            margin-top: 4px;
            flex-shrink: 0;
        }
        
        .comparison-col li i.fa-circle-xmark {
            color: var(--accent-red);
        }
        
        /* ===== FAQ ===== */
        .faq-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        
        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            border-color: var(--border-gold);
        }
        
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }
        
        .faq-question:hover {
            color: var(--accent-gold);
        }
        
        .faq-question i {
            color: var(--accent-gold);
            font-size: 1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .faq-item.active .faq-answer {
            max-height: 400px;
        }
        
        .faq-answer-inner {
            padding: 0 22px 20px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary) 0%, #0F3520 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            border: 1px solid var(--border-gold);
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        
        .cta-section h2 {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.7rem;
            color: var(--text-white);
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        
        .cta-section p {
            color: var(--text-mint);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 600px;
            position: relative;
            z-index: 2;
            margin-bottom: 0;
        }
        
        .btn-cta-primary {
            background: var(--accent-gold);
            border: none;
            color: var(--bg-primary);
            padding: 14px 30px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.35);
            position: relative;
            z-index: 2;
            display: inline-block;
            margin-top: 20px;
        }
        
        .btn-cta-primary:hover {
            background: #FFE55C;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }
        
        /* ===== Footer ===== */
        .site-footer {
            background: #071F14;
            border-top: 1px solid var(--border-soft);
            padding: 50px 0 28px;
            margin-top: 60px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        
        .footer-brand {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1rem;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 12px;
        }
        
        .footer-text {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-links li {
            margin-bottom: 8px;
        }
        
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--accent-gold);
        }
        
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        
        .footer-copy {
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        
        .footer-badge {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        
        .badge-18 {
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            font-size: 0.8rem;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        
        .badge-trust {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-soft);
            color: var(--text-muted);
            padding: 6px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
        }
        
        .badge-trust i {
            color: var(--accent-gold);
        }
        
        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }
            
            .comparison-row {
                grid-template-columns: 1fr;
            }
            
            .comparison-col:first-child {
                border-right: none;
                border-bottom: 1px solid var(--border-soft);
            }
        }
        
        @media (max-width: 768px) {
            .navbar {
                flex-wrap: wrap;
                gap: 12px;
            }
            
            .navbar-toggler {
                display: block;
            }
            
            .navbar-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 4px;
                padding: 10px 0;
                border-top: 1px solid var(--border-soft);
                margin-top: 8px;
            }
            
            .navbar-links.open {
                display: flex;
            }
            
            .navbar-links a {
                padding: 10px 14px;
                width: 100%;
                text-align: left;
            }
            
            .navbar-auth {
                margin-left: auto;
            }
            
            .btn-login {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            
            .btn-signup {
                padding: 7px 16px;
                font-size: 0.82rem;
            }
            
            .hero-title {
                font-size: 1.7rem;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .cta-section {
                padding: 32px 24px;
            }
            
            .cta-section h2 {
                font-size: 1.4rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            
            .navbar-logo span {
                font-size: 1.05rem;
            }
            
            .hero-title {
                font-size: 1.45rem;
            }
            
            .section-title {
                font-size: 1.3rem;
            }
            
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            
            .metric-item {
                padding: 16px 14px;
            }
            
            .metric-number {
                font-size: 1.5rem;
            }
            
            .info-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            
            .btn-cta-primary {
                width: 100%;
                text-align: center;
            }
            
            .navbar-auth {
                gap: 6px;
            }
            
            .btn-login, .btn-signup {
                font-size: 0.78rem;
                padding: 7px 12px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #FFD700;
            --color-primary-deep: #D4AC0D;
            --color-secondary: #D32F2F;
            --color-bg: #0A2E1C;
            --color-bg-deep: #062315;
            --color-surface: #123E25;
            --color-surface-light: #1A5032;
            --color-text: #FFFFFF;
            --color-text-soft: #D1F2EB;
            --color-border: rgba(255, 215, 0, 0.35);
            --color-gold-muted: #D4AC0D;
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --shadow-gold: 0 8px 30px rgba(255, 215, 0, 0.12);
            --shadow-deep: 0 12px 35px rgba(0, 0, 0, 0.4);
            --font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --spacing-section: 5rem;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--color-primary); text-decoration: none; transition: color 0.25s ease; }
        a:hover { color: #FFF5B8; }
        img { max-width: 100%; height: auto; display: block; }
        ul { list-style: none; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }

        /* NAVBAR */
        .site-header {
            background: rgba(6, 35, 21, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled { box-shadow: 0 8px 25px rgba(0,0,0,0.45); }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 0.85rem 0;
            gap: 1rem;
        }
        .navbar-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: #FFFFFF;
            letter-spacing: 0.3px;
        }
        .navbar-logo i { color: var(--color-primary); font-size: 1.7rem; }
        .navbar-logo span { color: #FFF; }
        .navbar-links {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            margin: 0;
            padding: 0;
        }
        .navbar-links a {
            color: var(--color-text-soft);
            font-weight: 500;
            font-size: 0.98rem;
            padding: 0.4rem 0.1rem;
            border-bottom: 2px solid transparent;
            transition: color 0.25s, border-color 0.25s;
        }
        .navbar-links a:hover { color: var(--color-primary); }
        .navbar-links a.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
        .navbar-auth { display: flex; align-items: center; gap: 0.7rem; }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(255,215,0,0.5);
            color: var(--color-primary);
            padding: 0.45rem 1.2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.3s;
            cursor: pointer;
        }
        .btn-login:hover { background: rgba(255,215,0,0.1); border-color: var(--color-primary); }
        .btn-signup {
            background: var(--color-primary);
            border: none;
            color: #0A2E1C;
            padding: 0.5rem 1.4rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all 0.3s;
            cursor: pointer;
            box-shadow: 0 4px 18px rgba(255,215,0,0.3);
        }
        .btn-signup:hover { background: #FFE55C; transform: translateY(-2px); box-shadow: 0 8px 25px rgba(255,215,0,0.4); }
        .navbar-toggler {
            background: transparent;
            border: 1px solid rgba(255,215,0,0.4);
            color: var(--color-primary);
            font-size: 1.4rem;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: none;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
        }
        .navbar-toggler:hover { background: rgba(255,215,0,0.1); }

        /* HERO */
        .category-hero {
            background: linear-gradient(135deg, #062315 0%, #0A2E1C 45%, #123E25 100%);
            padding: 4rem 0 3.5rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255,215,0,0.15);
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,215,0,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255,215,0,0.12);
            border: 1px solid rgba(255,215,0,0.35);
            color: var(--color-primary);
            padding: 0.35rem 1.1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 1.2rem;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1.1rem;
            color: #FFFFFF;
            max-width: 800px;
        }
        .category-hero h1 .highlight {
            color: var(--color-primary);
        }
        .hero-desc {
            font-size: 1.12rem;
            color: var(--color-text-soft);
            max-width: 750px;
            line-height: 1.7;
            margin-bottom: 1.8rem;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin-top: 1.5rem;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-primary);
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
        }

        /* MAIN SECTIONS */
        .section { padding: var(--spacing-section) 0; }
        .section-alt { background: var(--color-bg-deep); }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #FFFFFF;
        }
        .section-lead {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            margin-bottom: 2.5rem;
            max-width: 700px;
            line-height: 1.65;
        }
        .section-header-left {
            border-left: 4px solid var(--color-primary);
            padding-left: 1.2rem;
            margin-bottom: 2.5rem;
        }

        /* RULE CARDS */
        .rule-card {
            background: var(--color-surface);
            border: 1px solid rgba(255,215,0,0.2);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            height: 100%;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-gold);
        }
        .rule-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255,215,0,0.5);
            box-shadow: 0 18px 40px rgba(255,215,0,0.15);
        }
        .rule-card-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: rgba(255,215,0,0.15);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 1.2rem;
        }
        .rule-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #FFF;
        }
        .rule-card p {
            color: var(--color-text-soft);
            font-size: 0.98rem;
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* STEP LIST */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 1.4rem;
        }
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.6rem;
            border: 1px solid rgba(255,255,255,0.06);
            transition: background 0.3s;
        }
        .step-item:hover { background: rgba(255,215,0,0.05); }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #0A2E1C;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .step-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: #FFF;
        }
        .step-content p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.6;
        }

        /* IMAGE PANEL */
        .image-panel {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-deep);
            border: 1px solid rgba(255,215,0,0.2);
            position: relative;
        }
        .image-panel img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .image-panel-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(6,35,21,0.9));
            padding: 2rem 1.5rem 1.5rem;
        }
        .image-panel-overlay h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .image-panel-overlay p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            margin: 0;
        }

        /* TABLE */
        .bet-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-gold);
        }
        .bet-table th, .bet-table td {
            padding: 1.1rem 1.4rem;
            text-align: left;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            font-size: 0.95rem;
        }
        .bet-table th {
            background: rgba(255,215,0,0.1);
            color: var(--color-primary);
            font-weight: 700;
        }
        .bet-table td {
            color: var(--color-text-soft);
        }
        .bet-table tr:last-child td { border-bottom: none; }
        .bet-table tr:hover td { background: rgba(255,215,0,0.03); }

        /* FAQ */
        .faq-item {
            background: var(--color-surface);
            border: 1px solid rgba(255,215,0,0.2);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all 0.3s;
        }
        .faq-item:hover { border-color: rgba(255,215,0,0.45); }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: #FFF;
            font-weight: 600;
            font-size: 1.02rem;
            padding: 1.2rem 1.5rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color 0.3s;
        }
        .faq-question:hover { color: var(--color-primary); }
        .faq-question i {
            transition: transform 0.35s;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 1.5rem;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 1.4rem;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.65;
            margin: 0;
        }

        /* CTA */
        .cta-banner {
            background: linear-gradient(135deg, #123E25 0%, #0A2E1C 60%, #062315 100%);
            border: 1px solid rgba(255,215,0,0.3);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,215,0,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-banner h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 0.8rem;
            color: #FFF;
            position: relative;
        }
        .cta-banner p {
            color: var(--color-text-soft);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 1.8rem;
            position: relative;
        }
        .btn-cta-gold {
            background: var(--color-primary);
            color: #0A2E1C;
            font-weight: 800;
            padding: 0.85rem 2.4rem;
            border-radius: 40px;
            border: none;
            font-size: 1.05rem;
            transition: all 0.35s;
            cursor: pointer;
            position: relative;
            box-shadow: 0 6px 25px rgba(255,215,0,0.35);
        }
        .btn-cta-gold:hover {
            background: #FFE55C;
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(255,215,0,0.5);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1060;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #062315;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255,215,0,0.3);
            transition: all 0.35s;
            opacity: 0.7;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255,215,0,0.5);
        }
        .fab::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #D32F2F;
            border-radius: 50%;
            border: 2px solid #062315;
            animation: blink 1.5s infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* FOOTER */
        .site-footer {
            background: #04180E;
            border-top: 1px solid rgba(255,215,0,0.2);
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand {
            display: block;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            margin-bottom: 0.8rem;
        }
        .footer-text {
            color: var(--color-text-soft);
            font-size: 0.92rem;
            line-height: 1.65;
            max-width: 400px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
            padding: 0;
        }
        .footer-links a {
            color: var(--color-text-soft);
            font-size: 0.92rem;
            transition: color 0.25s;
        }
        .footer-links a:hover { color: var(--color-primary); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,215,0,0.1);
        }
        .footer-copy {
            color: rgba(255,255,255,0.5);
            font-size: 0.85rem;
        }
        .footer-badge {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .badge-18 {
            background: #D32F2F;
            color: #FFF;
            font-weight: 800;
            padding: 0.25rem 0.6rem;
            border-radius: 6px;
            font-size: 0.8rem;
        }
        .badge-trust {
            background: rgba(255,215,0,0.1);
            border: 1px solid rgba(255,215,0,0.3);
            color: var(--color-text-soft);
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            font-size: 0.8rem;
        }

        /* RESPONSIVE */
        @media (max-width: 992px) {
            .navbar-toggler { display: flex; }
            .navbar-links {
                display: none;
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                gap: 0.8rem;
                padding: 1rem 0;
                background: rgba(6,35,21,0.98);
                border-radius: 12px;
                margin-top: 0.5rem;
            }
            .navbar-links.show { display: flex; }
            .navbar-auth { margin-left: auto; }
            .category-hero h1 { font-size: 2.2rem; }
            .footer-content { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --spacing-section: 3.5rem; }
            .category-hero { padding: 3rem 0 2.5rem; }
            .category-hero h1 { font-size: 1.9rem; }
            .hero-stats { gap: 1.2rem; }
            .section-title { font-size: 1.7rem; }
            .cta-banner { padding: 2.2rem 1.5rem; }
            .cta-banner h2 { font-size: 1.5rem; }
            .footer-content { grid-template-columns: 1fr; gap: 1.8rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .navbar-auth .btn-login, .navbar-auth .btn-signup { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .category-hero h1 { font-size: 1.6rem; }
            .hero-desc { font-size: 1rem; }
            .step-item { flex-direction: column; gap: 0.8rem; }
            .rule-card { padding: 1.4rem; }
            .bet-table th, .bet-table td { padding: 0.8rem 0.7rem; font-size: 0.82rem; }
            .fab { width: 48px; height: 48px; font-size: 1.2rem; left: 0.6rem; bottom: 5rem; }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-dark: #071F12;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: #A3C9B8;
            --border-gold: rgba(255, 215, 0, 0.4);
            --border-subtle: rgba(255, 255, 255, 0.1);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.3);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.25);
            --transition: all 0.3s ease;
            --font-base: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
        }

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

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

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

        a:hover {
            color: #FFE55C;
        }

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

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

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

        /* ===== Header / Navigation ===== */
        .site-header {
            background-color: var(--bg-dark);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 10px;
        }

        .navbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            white-space: nowrap;
        }

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

        .navbar-logo:hover {
            color: #FFE55C;
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 1.4rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .navbar-toggler:hover {
            background-color: var(--accent-gold);
            color: var(--bg-dark);
        }

        .navbar-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .navbar-links li a {
            display: block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            border-radius: 30px;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .navbar-links li a:hover {
            color: var(--accent-gold);
            background-color: rgba(255, 215, 0, 0.08);
            border-color: var(--border-gold);
        }

        .navbar-links li a.active {
            color: var(--bg-dark);
            background-color: var(--accent-gold);
            font-weight: 600;
        }

        .navbar-auth {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-login,
        .btn-signup {
            padding: 9px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            border-radius: 30px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid var(--border-gold);
        }

        .btn-login:hover {
            background-color: rgba(255, 215, 0, 0.1);
            color: #FFE55C;
        }

        .btn-signup {
            background-color: var(--accent-gold);
            color: var(--bg-dark);
            border: 1px solid var(--accent-gold);
        }

        .btn-signup:hover {
            background-color: #FFE55C;
            color: var(--bg-dark);
            box-shadow: var(--shadow-gold);
        }

        /* ===== Hero Section ===== */
        .hero-section {
            background-image: linear-gradient(rgba(10, 46, 28, 0.85), rgba(10, 46, 28, 0.95)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 90px 0 80px;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }

        .hero-content {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
        }

        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            color: var(--text-white);
        }

        .hero-content .highlight {
            color: var(--accent-gold);
        }

        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-mint);
            margin-bottom: 28px;
            line-height: 1.6;
        }

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

        .btn-primary-custom {
            background-color: var(--accent-gold);
            color: var(--bg-dark);
            padding: 14px 30px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid var(--accent-gold);
        }

        .btn-primary-custom:hover {
            background-color: #FFE55C;
            color: var(--bg-dark);
            box-shadow: var(--shadow-gold);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--accent-gold);
            padding: 14px 30px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid var(--border-gold);
        }

        .btn-outline-custom:hover {
            background-color: rgba(255, 215, 0, 0.1);
            color: #FFE55C;
        }

        /* ===== Data Metrics ===== */
        .metrics-strip {
            background-color: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 28px 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-item {
            text-align: center;
            padding: 14px;
            background-color: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            transition: var(--transition);
        }

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

        .metric-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Main Content ===== */
        .main-content {
            padding: 70px 0;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 680px;
        }

        /* Strategy Matrix */
        .strategy-matrix {
            margin-bottom: 60px;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .strategy-card {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 26px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .strategy-icon {
            width: 52px;
            height: 52px;
            background-color: rgba(255, 215, 0, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .strategy-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .strategy-card p {
            font-size: 0.92rem;
            color: var(--text-mint);
            line-height: 1.6;
        }

        /* Comparison Table */
        .comparison-section {
            margin-bottom: 60px;
            background-color: var(--bg-dark);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid var(--border-subtle);
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            margin-top: 20px;
        }

        .comparison-table th {
            text-align: left;
            padding: 14px 16px;
            background-color: rgba(255, 215, 0, 0.08);
            color: var(--accent-gold);
            font-weight: 600;
            font-size: 0.95rem;
            border-bottom: 2px solid var(--border-gold);
        }

        .comparison-table td {
            padding: 14px 16px;
            color: var(--text-mint);
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .comparison-table .positive {
            color: #4CAF50;
            font-weight: 600;
        }

        .comparison-table .negative {
            color: var(--accent-red);
            font-weight: 600;
        }

        /* FAQ Section */
        .faq-section {
            margin-bottom: 60px;
        }

        .faq-list {
            max-width: 820px;
        }

        .faq-item {
            background-color: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: none;
            color: var(--text-white);
            font-size: 1.02rem;
            font-weight: 600;
            text-align: left;
            transition: var(--transition);
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
            color: var(--text-mint);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }

        /* CTA Section */
        .cta-section {
            background-image: linear-gradient(rgba(10, 46, 28, 0.92), rgba(10, 46, 28, 0.92)), url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            padding: 70px 0;
            border-radius: var(--radius-xl);
            text-align: center;
            margin-bottom: 60px;
            border: 1px solid var(--border-gold);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text-white);
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-mint);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--bg-dark);
            border-top: 1px solid var(--border-gold);
            padding: 50px 0 24px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 12px;
        }

        .footer-text {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
            max-width: 400px;
        }

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

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

        .footer-links a {
            color: var(--text-mint);
            font-size: 0.88rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
        }

        .footer-copy {
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .footer-badge {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .badge-18 {
            background-color: var(--accent-red);
            color: var(--text-white);
            font-weight: 800;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
        }

        .badge-trust {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            color: var(--text-mint);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

        /* ===== FAB ===== */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.4rem;
            box-shadow: var(--shadow-gold);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.7;
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
        }

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

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 16px;
            height: 16px;
            background-color: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--bg-dark);
            animation: blink 1.5s infinite;
        }

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

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .navbar-toggler {
                display: block;
            }

            .navbar-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 0;
                gap: 4px;
            }

            .navbar-links.open {
                display: flex;
            }

            .navbar-links li a {
                text-align: center;
                padding: 12px;
            }

            .navbar-auth {
                display: flex;
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                padding: 8px 16px;
                font-size: 0.82rem;
            }

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

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

            .comparison-section {
                padding: 20px;
                overflow-x: auto;
            }

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

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

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .metric-number {
                font-size: 1.5rem;
            }
        }

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

            .navbar-logo span {
                font-size: 1rem;
            }

            .hero-section {
                padding: 50px 0 50px;
            }

            .hero-content h1 {
                font-size: 1.5rem;
            }

            .hero-content p {
                font-size: 0.95rem;
            }

            .btn-primary-custom,
            .btn-outline-custom {
                padding: 12px 20px;
                font-size: 0.9rem;
                width: 100%;
                text-align: center;
            }

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

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

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

            .strategy-card {
                padding: 20px;
            }

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

            .fab {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }