/* roulang page: index */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-secondary: #D1F2EB;
            --text-muted: #9CB8AD;
            --card-bg: #0F3A26;
            --border-color: #1A4D31;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition: all 0.3s ease;
        }
        
        * {
            box-sizing: border-box;
        }
        
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            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(--text-primary);
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header & Navigation */
        .main-header {
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-md);
        }
        
        .top-bar {
            padding: 18px 0;
        }
        
        .logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .logo i {
            font-size: 28px;
            color: var(--accent-red);
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .main-nav li a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        
        .main-nav li a:hover,
        .main-nav li a.active {
            color: var(--accent-gold);
            border-bottom-color: var(--accent-gold);
        }
        
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-login {
            color: var(--text-primary);
            font-weight: 500;
            padding: 8px 16px;
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            color: var(--primary-bg);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.5);
            color: var(--primary-bg);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 24px;
            cursor: pointer;
        }
        
        /* Hero Section */
        .hero-section {
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            position: relative;
            padding: 80px 0 100px;
            overflow: hidden;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 46, 28, 0.92) 0%, rgba(18, 62, 37, 0.88) 100%);
            z-index: 1;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-red) 0%, #B71C1C 100%);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 24px;
            box-shadow: var(--shadow-md);
        }
        
        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 24px;
            color: var(--text-primary);
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        
        .hero-title .highlight {
            color: var(--accent-gold);
        }
        
        .hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
        }
        
        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            color: var(--primary-bg);
            font-weight: 700;
            padding: 16px 36px;
            border-radius: var(--radius-md);
            font-size: 17px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.6);
            color: var(--primary-bg);
        }
        
        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            color: var(--text-primary);
            border: 1px solid var(--accent-gold);
            font-weight: 600;
            padding: 16px 36px;
            border-radius: var(--radius-md);
            font-size: 17px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            cursor: pointer;
        }
        
        .btn-secondary:hover {
            background: rgba(255, 215, 0, 0.15);
            border-color: var(--text-primary);
            color: var(--text-primary);
        }
        
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        
        .stat-item {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
        }
        
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 8px;
        }
        
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        
        /* Section Styles */
        .section {
            padding: 80px 0;
        }
        
        .section-header {
            text-align: left;
            margin-bottom: 48px;
        }
        
        .section-title {
            font-size: 38px;
            font-weight: 800;
            margin: 0 0 16px;
            color: var(--text-primary);
        }
        
        .section-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.6;
            max-width: 720px;
        }
        
        /* Progress Goal Section */
        .goal-progress {
            background: var(--card-bg);
            border: 1px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-lg);
        }
        
        .progress-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }
        
        .progress-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent-gold);
        }
        
        .progress-amount {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
        }
        
        .progress-bar-wrapper {
            background: rgba(0, 0, 0, 0.3);
            height: 32px;
            border-radius: 50px;
            overflow: hidden;
            margin-bottom: 16px;
            position: relative;
        }
        
        .progress-bar-fill {
            background: linear-gradient(90deg, var(--accent-gold) 0%, #FFA500 100%);
            height: 100%;
            width: 78%;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding-right: 16px;
            font-weight: 700;
            color: var(--primary-bg);
            box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
        }
        
        .progress-info {
            display: flex;
            justify-content: space-between;
            font-size: 15px;
            color: var(--text-secondary);
        }
        
        /* Tier Cards */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        
        .tier-card {
            background: var(--card-bg);
            border: 2px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .tier-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-gold) 0%, var(--accent-red) 100%);
        }
        
        .tier-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }
        
        .tier-badge {
            display: inline-block;
            background: var(--accent-red);
            color: var(--text-primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        .tier-price {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent-gold);
            margin: 0 0 8px;
        }
        
        .tier-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px;
        }
        
        .tier-features {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        
        .tier-features li {
            display: flex;
            align-items: start;
            gap: 10px;
            padding: 8px 0;
            color: var(--text-secondary);
            font-size: 15px;
        }
        
        .tier-features li i {
            color: var(--accent-gold);
            margin-top: 4px;
            font-size: 14px;
        }
        
        .tier-btn {
            width: 100%;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            color: var(--primary-bg);
            font-weight: 700;
            padding: 14px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-size: 16px;
        }
        
        .tier-btn:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-gold);
        }
        
        /* Supporter Wall */
        .supporter-wall {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-lg);
            padding: 40px;
        }
        
        .supporter-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
            gap: 20px;
        }
        
        .supporter-item {
            text-align: center;
        }
        
        .supporter-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            font-weight: 700;
            color: var(--primary-bg);
            margin: 0 auto 12px;
            box-shadow: var(--shadow-md);
        }
        
        .supporter-name {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 600;
        }
        
        .supporter-amount {
            font-size: 13px;
            color: var(--accent-gold);
            font-weight: 700;
            margin-top: 4px;
        }
        
        /* App Cards */
        .app-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
        }
        
        .app-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .app-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }
        
        .app-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        
        .app-content {
            padding: 24px;
        }
        
        .app-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 12px;
        }
        
        .app-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }
        
        .app-rating {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 16px;
        }
        
        .app-desc {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        
        .app-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }
        
        .app-tag {
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(255, 215, 0, 0.3);
        }
        
        .app-download-btn {
            width: 100%;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            color: var(--primary-bg);
            font-weight: 700;
            padding: 14px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .app-download-btn:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-gold);
        }
        
        /* Step Guide */
        .step-guide {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 48px;
            border: 1px solid var(--border-color);
        }
        
        .step-items {
            display: grid;
            gap: 32px;
        }
        
        .step-item {
            display: flex;
            gap: 24px;
            align-items: start;
        }
        
        .step-number {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            color: var(--primary-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: var(--shadow-gold);
        }
        
        .step-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
        }
        
        .step-content p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
            margin: 0;
        }
        
        /* News Section */
        .news-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }
        
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .news-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .news-item:hover {
            border-color: var(--accent-gold);
            transform: translateX(5px);
        }
        
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        
        .news-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        
        .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
            transition: var(--transition);
        }
        
        .news-item:hover .news-title {
            color: var(--accent-gold);
        }
        
        .news-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        
        .sidebar-widget {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        
        .widget-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 0 0 16px;
        }
        
        .widget-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .widget-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }
        
        .widget-list li:last-child {
            border-bottom: none;
        }
        
        .widget-list a {
            color: var(--text-secondary);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        
        .widget-list a:hover {
            color: var(--accent-gold);
            padding-left: 8px;
        }
        
        /* FAQ Section */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }
        
        .faq-question {
            padding: 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
        }
        
        .faq-question:hover {
            background: rgba(255, 215, 0, 0.05);
        }
        
        .faq-question h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
        }
        
        .faq-icon {
            color: var(--accent-gold);
            font-size: 20px;
            transition: var(--transition);
        }
        
        .faq-answer {
            padding: 0 24px 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-gold);
        }
        
        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary-bg);
            margin: 0 0 16px;
        }
        
        .cta-section p {
            font-size: 18px;
            color: rgba(10, 46, 28, 0.8);
            margin: 0 0 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .cta-btn {
            background: var(--primary-bg);
            color: var(--accent-gold);
            font-weight: 700;
            padding: 18px 42px;
            border-radius: var(--radius-md);
            font-size: 18px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(10, 46, 28, 0.4);
            color: var(--accent-gold);
        }
        
        /* Footer */
        .main-footer {
            background: rgba(10, 46, 28, 0.95);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 24px;
            margin-top: 80px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-about h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 0 0 16px;
        }
        
        .footer-about p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        
        .footer-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        
        .footer-badge {
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--accent-gold);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--accent-gold);
            font-weight: 600;
        }
        
        .footer-section h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 20px;
        }
        
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 5px;
        }
        
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 14px;
        }
        
        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 999;
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-gold);
            cursor: pointer;
            transition: var(--transition);
            border: 3px solid var(--primary-bg);
            opacity: 0.8;
        }
        
        .fab:hover {
            opacity: 1;
            transform: scale(1.1) rotate(5deg);
            box-shadow: 0 6px 32px rgba(255, 215, 0, 0.6);
        }
        
        .fab i {
            font-size: 28px;
            color: var(--primary-bg);
        }
        
        .fab-notification {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 20px;
            height: 20px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .hero-title {
                font-size: 36px;
            }
            
            .hero-desc {
                font-size: 16px;
            }
            
            .hero-stats {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            
            .section-title {
                font-size: 28px;
            }
            
            .section {
                padding: 60px 0;
            }
            
            .main-nav {
                display: none;
            }
            
            .mobile-menu-toggle {
                display: block;
            }
            
            .tier-grid {
                grid-template-columns: 1fr;
            }
            
            .app-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            
            .step-guide {
                padding: 32px 24px;
            }
            
            .supporter-grid {
                grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
                gap: 16px;
            }
            
            .supporter-avatar {
                width: 60px;
                height: 60px;
                font-size: 24px;
            }
            
            .fab {
                width: 56px;
                height: 56px;
                left: 16px;
                bottom: 80px;
            }
            
            .fab i {
                font-size: 24px;
            }
        }
        
        @media (max-width: 520px) {
            .hero-section {
                padding: 60px 0 80px;
            }
            
            .hero-title {
                font-size: 28px;
            }
            
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            
            .section-title {
                font-size: 24px;
            }
            
            .goal-progress {
                padding: 24px;
            }
            
            .progress-title {
                font-size: 18px;
            }
            
            .progress-amount {
                font-size: 24px;
            }
            
            .cta-section h2 {
                font-size: 28px;
            }
            
            .cta-section p {
                font-size: 16px;
            }
        }

/* roulang page: article */
:root {
            --paper: #FCF7EB;
            --paper-soft: #F5ECD8;
            --paper-card: #FFFDF6;
            --ink: #2C2418;
            --ink-soft: #6E6150;
            --red: #C8352B;
            --red-dark: #A32A22;
            --gold: #DFA100;
            --gold-soft: #F4D77E;
            --note-yellow: #FFF1A8;
            --note-mint: #DCF3D2;
            --note-pink: #FFDCD2;
            --line: #3A3125;
            --radius-sketch: 255px 18px 225px 18px / 18px 225px 18px 255px;
            --radius-sketch-2: 18px 225px 18px 255px / 255px 18px 225px 18px;
            --shadow-note: 4px 5px 0 rgba(44, 36, 24, 0.16);
            --shadow-lift: 7px 9px 0 rgba(44, 36, 24, 0.2);
            --font-hand: 'Shantell Sans', 'Be Vietnam Pro', sans-serif;
            --font-body: 'Be Vietnam Pro', sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-body);
            background: var(--paper);
            background-image: radial-gradient(rgba(44,36,24,0.045) 1px, transparent 1px);
            background-size: 26px 26px;
            color: var(--ink);
            line-height: 1.65;
            font-size: 16px;
        }
        img { max-width: 100%; display: block; }
        a { color: var(--red); text-decoration: none; transition: color .2s ease; }
        a:hover, a:focus { color: var(--red-dark); }
        button { font-family: inherit; cursor: pointer; }
        .container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

        /* ===== Header ===== */
        .main-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 900;
            background: var(--paper-card);
            border-bottom: 2px dashed var(--line);
            box-shadow: 0 4px 0 rgba(44,36,24,0.08);
        }
        .top-bar { padding: 12px 0; background: transparent; }
        .top-bar .grid-x { align-items: center; }
        .logo {
            display: inline-flex; align-items: center; gap: 10px;
            font-family: var(--font-hand); font-weight: 800; font-size: 1.25rem;
            color: var(--ink); letter-spacing: .2px;
        }
        .logo i { color: var(--gold); font-size: 1.35rem; transform: rotate(-8deg); }
        .logo:hover { color: var(--red); }
        .main-nav {
            list-style: none; margin: 0; padding: 0;
            display: flex; justify-content: center; gap: 6px;
        }
        .main-nav a {
            display: inline-block; padding: 8px 16px;
            font-weight: 600; font-size: .95rem; color: var(--ink);
            border: 2px solid transparent; border-radius: var(--radius-sketch);
        }
        .main-nav a:hover { color: var(--red); border-color: var(--line); background: var(--note-yellow); }
        .main-nav a.active {
            background: var(--note-yellow); border-color: var(--line);
            box-shadow: 3px 3px 0 rgba(44,36,24,0.18); color: var(--ink);
        }
        .header-actions { display: inline-flex; align-items: center; gap: 10px; }
        .btn-login { font-weight: 600; color: var(--ink); padding: 8px 6px; font-size: .92rem; }
        .btn-login:hover { color: var(--red); }
        .btn-signup {
            display: inline-block; background: var(--red); color: #FFFDF6;
            font-weight: 700; font-size: .92rem; padding: 9px 20px;
            border: 2px solid var(--line); border-radius: var(--radius-sketch);
            box-shadow: 3px 4px 0 rgba(44,36,24,0.25);
            transition: transform .15s ease, box-shadow .15s ease;
        }
        .btn-signup:hover { color: #fff; background: var(--red-dark); transform: translate(-1px,-2px); box-shadow: 5px 6px 0 rgba(44,36,24,0.25); }
        .btn-signup:active { transform: translate(1px,2px); box-shadow: 1px 2px 0 rgba(44,36,24,0.25); }
        .mobile-menu-toggle {
            background: var(--paper-card); border: 2px solid var(--line);
            border-radius: 10px; padding: 7px 11px; color: var(--ink); font-size: 1rem;
        }
        .mobile-nav {
            display: none; background: var(--paper-card);
            border-bottom: 2px dashed var(--line); padding: 10px 20px 16px;
        }
        .mobile-nav.open { display: block; }
        .mobile-nav a {
            display: block; padding: 11px 14px; margin-bottom: 6px;
            font-weight: 600; color: var(--ink);
            border: 2px solid var(--line); border-radius: var(--radius-sketch-2);
            background: var(--paper-card);
        }
        .mobile-nav a.active, .mobile-nav a:hover { background: var(--note-yellow); color: var(--ink); }

        /* ===== Breadcrumb banner ===== */
        .article-banner {
            margin-top: 66px;
            background: linear-gradient(rgba(44,36,24,.78), rgba(44,36,24,.78)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-bottom: 2px dashed var(--line);
            padding: 34px 0 30px;
        }
        .breadcrumb-trail {
            display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
            font-size: .88rem; color: var(--gold-soft); margin-bottom: 14px;
        }
        .breadcrumb-trail a { color: #FCF7EB; font-weight: 600; }
        .breadcrumb-trail a:hover { color: var(--gold-soft); }
        .breadcrumb-trail i { font-size: .7rem; opacity: .8; }
        .article-banner h1 {
            font-family: var(--font-hand); font-weight: 800;
            font-size: clamp(1.5rem, 3.2vw, 2.3rem);
            color: #FFFDF6; margin: 0 0 14px; line-height: 1.3; max-width: 860px;
        }
        .article-meta { display: flex; flex-wrap: wrap; gap: 10px; }
        .meta-chip {
            display: inline-flex; align-items: center; gap: 7px;
            background: var(--note-yellow); color: var(--ink);
            border: 2px solid var(--line); border-radius: var(--radius-sketch);
            font-size: .82rem; font-weight: 700; padding: 5px 14px;
            box-shadow: 2px 3px 0 rgba(0,0,0,.3);
        }
        .meta-chip i { color: var(--red); }
        .meta-chip.chip-mint { background: var(--note-mint); }

        /* ===== Layout ===== */
        .page-main { padding: 46px 0 20px; }
        .article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 44px; align-items: start; }

        /* ===== Article body ===== */
        .article-sheet {
            background: var(--paper-card);
            border: 2px solid var(--line);
            border-radius: var(--radius-sketch-2);
            box-shadow: var(--shadow-note);
            padding: 38px 40px 44px;
            position: relative;
        }
        .article-sheet::before {
            content: ""; position: absolute; top: -14px; left: 50%; transform: translateX(-50%) rotate(-2deg);
            width: 130px; height: 26px; background: rgba(244,215,126,.75);
            border: 1px solid rgba(44,36,24,.2);
        }
        .article-body { max-width: 720px; margin: 0 auto; font-size: 1.02rem; }
        .article-body h2 {
            font-family: var(--font-hand); font-weight: 800; font-size: 1.45rem;
            margin: 2em 0 .7em; padding-bottom: 8px;
            border-bottom: 3px solid var(--gold);
            display: inline-block; line-height: 1.35;
        }
        .article-body h3 {
            font-family: var(--font-hand); font-weight: 700; font-size: 1.18rem;
            margin: 1.6em 0 .6em; color: var(--red-dark);
        }
        .article-body p { margin: 0 0 1.1em; color: #3B3223; }
        .article-body ul, .article-body ol { padding-left: 1.4em; margin: 0 0 1.2em; }
        .article-body li { margin-bottom: .55em; }
        .article-body li::marker { color: var(--red); font-weight: 700; }
        .article-body a { font-weight: 600; border-bottom: 2px dashed var(--gold); }
        .article-body img {
            border: 2px solid var(--line); border-radius: 14px;
            box-shadow: var(--shadow-note); margin: 1.4em auto;
        }
        .article-body blockquote {
            margin: 1.6em 0; padding: 18px 22px;
            background: var(--note-mint); border: 2px solid var(--line);
            border-radius: var(--radius-sketch); box-shadow: var(--shadow-note);
            font-style: italic; color: var(--ink); transform: rotate(-.4deg);
        }
        .article-body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: .95rem; }
        .article-body th, .article-body td { border: 2px solid var(--line); padding: 10px 14px; text-align: left; }
        .article-body th { background: var(--note-yellow); font-weight: 700; }
        .article-body tr:nth-child(even) td { background: var(--paper-soft); }
        .article-body strong { color: var(--red-dark); }

        /* Not-found note */
        .not-found-note {
            max-width: 560px; margin: 10px auto; text-align: left;
            background: var(--note-pink); border: 2px solid var(--line);
            border-radius: var(--radius-sketch); box-shadow: var(--shadow-note);
            padding: 30px 32px; transform: rotate(-.6deg);
        }
        .not-found-note h2 { font-family: var(--font-hand); font-size: 1.4rem; margin: 0 0 10px; }
        .not-found-note p { color: var(--ink-soft); margin: 0 0 18px; }
        .btn-home {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--red); color: #FFFDF6; font-weight: 700;
            padding: 11px 24px; border: 2px solid var(--line);
            border-radius: var(--radius-sketch); box-shadow: 3px 4px 0 rgba(44,36,24,.25);
            transition: transform .15s ease;
        }
        .btn-home:hover { color: #fff; background: var(--red-dark); transform: translate(-1px,-2px); }

        /* ===== Sidebar ===== */
        .sidebar { display: flex; flex-direction: column; gap: 28px; position: sticky; top: 90px; }
        .side-note {
            border: 2px solid var(--line); border-radius: var(--radius-sketch-2);
            box-shadow: var(--shadow-note); padding: 22px 22px 24px;
            background: var(--paper-card);
        }
        .side-note.note-yellow { background: var(--note-yellow); transform: rotate(.6deg); }
        .side-note.note-mint { background: var(--note-mint); transform: rotate(-.5deg); }
        .side-title {
            font-family: var(--font-hand); font-weight: 800; font-size: 1.08rem;
            margin: 0 0 14px; display: flex; align-items: center; gap: 9px;
        }
        .side-title i { color: var(--red); }
        .recent-list { list-style: none; margin: 0; padding: 0; }
        .recent-list li { border-bottom: 2px dashed rgba(44,36,24,.25); }
        .recent-list li:last-child { border-bottom: 0; }
        .recent-list a {
            display: block; padding: 11px 2px; color: var(--ink);
            font-weight: 600; font-size: .92rem; line-height: 1.45;
        }
        .recent-list a:hover { color: var(--red); padding-left: 6px; }
        .recent-list .recent-date { display: block; font-size: .78rem; color: var(--ink-soft); font-weight: 500; margin-top: 3px; }
        .side-cover { border: 2px solid var(--line); border-radius: 12px; box-shadow: 3px 4px 0 rgba(44,36,24,.18); margin-bottom: 14px; }
        .side-note p { font-size: .9rem; color: #3B3223; margin: 0 0 14px; }
        .btn-side {
            display: flex; justify-content: center; align-items: center; gap: 9px;
            background: var(--ink); color: var(--gold-soft); font-weight: 700; font-size: .95rem;
            padding: 12px 18px; border: 2px solid var(--line);
            border-radius: var(--radius-sketch); box-shadow: 3px 4px 0 rgba(44,36,24,.28);
            transition: transform .15s ease;
        }
        .btn-side:hover { color: var(--gold); transform: translate(-1px,-2px); }
        .pay-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .pay-tags span {
            display: inline-flex; align-items: center; gap: 6px;
            font-size: .8rem; font-weight: 700; padding: 6px 12px;
            background: var(--paper-card); border: 2px solid var(--line); border-radius: 999px;
        }
        .pay-tags i { color: var(--red); }

        /* ===== Steps strip ===== */
        .steps-strip { padding: 40px 0 10px; }
        .strip-head { max-width: 640px; margin-bottom: 26px; }
        .strip-head h2 { font-family: var(--font-hand); font-weight: 800; font-size: 1.55rem; margin: 0 0 8px; }
        .strip-head h2 span { border-bottom: 4px solid var(--gold); }
        .strip-head p { color: var(--ink-soft); margin: 0; }
        .steps-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .step-note {
            position: relative; padding: 26px 22px 24px;
            border: 2px solid var(--line); border-radius: var(--radius-sketch);
            box-shadow: var(--shadow-note); background: var(--paper-card);
            transition: transform .18s ease, box-shadow .18s ease;
        }
        .step-note:nth-child(1) { background: var(--note-yellow); transform: rotate(-.7deg); }
        .step-note:nth-child(2) { background: var(--note-mint); transform: rotate(.5deg); }
        .step-note:nth-child(3) { background: var(--note-pink); transform: rotate(-.4deg); }
        .step-note:hover { transform: translateY(-5px) rotate(0deg); box-shadow: var(--shadow-lift); }
        .step-num {
            position: absolute; top: -16px; left: 18px;
            width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
            background: var(--red); color: #FFFDF6; font-family: var(--font-hand); font-weight: 800;
            border: 2px solid var(--line); border-radius: 50%;
            box-shadow: 2px 3px 0 rgba(44,36,24,.25);
        }
        .step-note h3 { font-family: var(--font-hand); font-size: 1.08rem; font-weight: 800; margin: 6px 0 8px; }
        .step-note p { font-size: .9rem; color: #3B3223; margin: 0; }

        /* ===== CTA ===== */
        .cta-section { padding: 50px 0 70px; }
        .cta-box {
            text-align: center;
            background: linear-gradient(rgba(44,36,24,.82), rgba(44,36,24,.82)), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            border: 2px solid var(--line); border-radius: var(--radius-sketch-2);
            box-shadow: var(--shadow-lift); padding: 54px 30px;
        }
        .cta-box h2 {
            font-family: var(--font-hand); font-weight: 800; color: #FFFDF6;
            font-size: clamp(1.4rem, 2.8vw, 2rem); margin: 0 0 12px;
        }
        .cta-box p { color: #E8DFC9; max-width: 620px; margin: 0 auto 26px; }
        .cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
        .btn-cta-main {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--gold); color: var(--ink); font-weight: 800; font-size: 1rem;
            padding: 14px 32px; border: 2px solid var(--line);
            border-radius: var(--radius-sketch); box-shadow: 4px 5px 0 rgba(0,0,0,.35);
            transition: transform .15s ease;
        }
        .btn-cta-main:hover { color: var(--ink); background: var(--gold-soft); transform: translate(-1px,-3px); }
        .btn-cta-ghost {
            display: inline-flex; align-items: center; gap: 10px;
            color: #FFFDF6; font-weight: 700; padding: 14px 28px;
            border: 2px dashed #FFFDF6; border-radius: var(--radius-sketch);
        }
        .btn-cta-ghost:hover { color: var(--gold-soft); border-color: var(--gold-soft); }

        /* ===== Footer ===== */
        .main-footer {
            background: #2C2418; color: #D9CFBB;
            border-top: 4px solid var(--gold); padding: 54px 0 0;
        }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.1fr; gap: 36px; padding-bottom: 40px; }
        .main-footer h3 { font-family: var(--font-hand); color: var(--gold-soft); font-size: 1.15rem; margin: 0 0 14px; }
        .main-footer h4 { color: #FFFDF6; font-size: .98rem; margin: 0 0 14px; font-weight: 700; }
        .footer-about p { font-size: .9rem; line-height: 1.7; margin: 0 0 18px; color: #BFB49C; }
        .footer-badges { display: flex; flex-wrap: wrap; gap: 8px; }
        .footer-badge {
            display: inline-flex; align-items: center; gap: 6px;
            font-size: .78rem; font-weight: 700; color: var(--gold-soft);
            border: 1px dashed var(--gold-soft); border-radius: 999px; padding: 5px 12px;
        }
        .footer-links { list-style: none; margin: 0; padding: 0; }
        .footer-links li { margin-bottom: 9px; }
        .footer-links a { color: #BFB49C; font-size: .9rem; }
        .footer-links a:hover { color: var(--gold-soft); padding-left: 4px; }
        .footer-links i { width: 18px; color: var(--gold); }
        .footer-bottom {
            border-top: 1px dashed rgba(217,207,187,.3);
            padding: 18px 0; text-align: center; font-size: .82rem; color: #9C917B;
        }

        /* ===== FAB ===== */
        .fab-support {
            position: fixed; left: 16px; bottom: 96px; z-index: 950;
            width: 60px; height: 60px; border-radius: 50%;
            background: radial-gradient(circle at 32% 28%, #4A3C22, #221A0D 72%);
            border: 3px solid var(--gold);
            display: flex; align-items: center; justify-content: center;
            color: var(--gold); font-size: 1.45rem;
            box-shadow: 0 4px 20px rgba(255,215,0,.35);
            opacity: .72; animation: fabFloat 2.8s ease-in-out infinite;
            transition: transform .2s ease, opacity .2s ease;
        }
        .fab-support:hover { opacity: 1; transform: scale(1.1); color: var(--gold-soft); }
        .fab-support:hover i { transform: rotate(360deg); }
        .fab-support:active { transform: scale(.95) translateY(2px); }
        .fab-support i { transition: transform .5s ease; }
        .fab-support .fab-dot {
            position: absolute; top: 2px; right: 2px;
            width: 12px; height: 12px; border-radius: 50%;
            background: var(--red); border: 2px solid #FFFDF6;
            animation: dotBlink 1.4s infinite;
        }
        @keyframes fabFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
        @keyframes dotBlink { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: minmax(0,1fr) 290px; gap: 30px; }
            .article-sheet { padding: 32px 28px 38px; }
        }
        @media (max-width: 768px) {
            .article-layout { grid-template-columns: 1fr; }
            .sidebar { position: static; }
            .steps-row { grid-template-columns: 1fr; gap: 30px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .article-banner { padding: 26px 0 24px; }
        }
        @media (max-width: 520px) {
            body { font-size: 15px; }
            .logo span { font-size: .98rem; }
            .btn-signup { padding: 8px 13px; font-size: .82rem; }
            .btn-login { font-size: .82rem; padding: 8px 3px; }
            .article-sheet { padding: 26px 18px 32px; }
            .article-body { font-size: .98rem; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-box { padding: 40px 18px; }
            .fab-support { width: 52px; height: 52px; font-size: 1.25rem; bottom: 84px; }
        }

/* roulang page: category1 */
\n        :root {\n            --paper: #FAF5EA;\n            --paper-soft: #F3ECDC;\n            --ink: #2B2620;\n            --ink-soft: #5C544A;\n            --gold: #C5A059;\n            --gold-deep: #9C7B3C;\n            --dark: #1C1C1E;\n            --dark-2: #26241F;\n            --note-yellow: #FFF3B0;\n            --note-mint: #D6F3E3;\n            --note-pink: #FFDDD2;\n            --note-blue: #DCEBFA;\n            --red: #C0392B;\n            --sketch-border: 2px solid var(--ink);\n            --sketch-radius: 255px 18px 225px 18px / 18px 225px 18px 255px;\n            --sketch-radius-2: 18px 225px 18px 255px / 255px 18px 225px 18px;\n            --shadow-note: 4px 5px 0 rgba(43, 38, 32, .16);\n            --shadow-note-hover: 7px 9px 0 rgba(43, 38, 32, .2);\n            --radius-btn: 14px 4px 16px 5px / 5px 16px 4px 14px;\n            --space-section: 5.5rem;\n            --container-w: 1160px;\n        }\n\n        *, *::before, *::after { box-sizing: border-box; }\n\n        html { scroll-behavior: smooth; }\n\n        body {\n            margin: 0;\n            font-family: 'Be Vietnam Pro', 'Segoe UI', sans-serif;\n            font-size: 16.5px;\n            line-height: 1.65;\n            color: var(--ink);\n            background-color: var(--paper);\n            background-image:\n                radial-gradient(rgba(43, 38, 32, .045) 1px, transparent 1px),\n                linear-gradient(180deg, rgba(197, 160, 89, .05), transparent 340px);\n            background-size: 26px 26px, 100% 100%;\n        }\n\n        img { max-width: 100%; height: auto; display: block; }\n        a { color: var(--gold-deep); text-decoration: none; transition: color .2s ease; }\n        a:hover, a:focus { color: var(--ink); }\n        a:focus-visible, button:focus-visible { outline: 3px dashed var(--gold-deep); outline-offset: 3px; }\n        button { font-family: inherit; cursor: pointer; }\n        ul { margin: 0; padding: 0; }\n\n        .container { max-width: var(--container-w); margin: 0 auto; padding: 0 1.25rem; }\n\n        h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .8rem; color: var(--ink); }\n        h1 { font-size: 2.6rem; font-weight: 800; }\n        h2 { font-size: 2rem; font-weight: 800; }\n        h3 { font-size: 1.25rem; font-weight: 700; }\n        h4 { font-size: 1.05rem; font-weight: 700; }\n        p { margin: 0 0 1rem; }\n\n        .hand-note { font-family: 'Itim', 'Be Vietnam Pro', cursive; }\n\n        .section-eyebrow {\n            display: inline-flex;\n            align-items: center;\n            gap: .5rem;\n            font-family: 'Itim', cursive;\n            font-size: 1.05rem;\n            color: var(--gold-deep);\n            background: var(--note-yellow);\n            border: var(--sketch-border);\n            border-radius: var(--radius-btn);\n            padding: .25rem .9rem;\n            margin-bottom: 1rem;\n            transform: rotate(-1.2deg);\n            box-shadow: 3px 3px 0 rgba(43, 38, 32, .14);\n        }\n\n        .section-lead { max-width: 640px; color: var(--ink-soft); font-size: 1.05rem; }\n\n        .sketch-underline {\n            background-image: linear-gradient(120deg, rgba(197, 160, 89, .45), rgba(197, 160, 89, .45));\n            background-repeat: no-repeat;\n            background-size: 100% .42em;\n            background-position: 0 82%;\n        }\n\n        /* ============ HEADER ============ */\n        .main-header {\n            position: fixed;\n            top: 0; left: 0; right: 0;\n            z-index: 100;\n            background: var(--dark);\n            border-bottom: 3px solid var(--gold);\n            box-shadow: 0 4px 18px rgba(0, 0, 0, .28);\n        }\n        .main-header .top-bar { background: transparent; padding: .75rem 0; }\n        .logo {\n            display: inline-flex;\n            align-items: center;\n            gap: .55rem;\n            font-family: 'Itim', cursive;\n            font-size: 1.3rem;\n            color: #F5F0E4;\n            white-space: nowrap;\n        }\n        .logo i { color: var(--gold); font-size: 1.35rem; }\n        .logo:hover, .logo:focus { color: var(--gold); }\n\n        .main-nav {\n            display: flex;\n            justify-content: center;\n            gap: .4rem;\n            list-style: none;\n            margin: 0;\n        }\n        .main-nav a {\n            display: inline-block;\n            padding: .5rem 1.05rem;\n            color: #D8D2C4;\n            font-weight: 600;\n            font-size: .98rem;\n            border: 2px solid transparent;\n            border-radius: var(--radius-btn);\n            transition: all .2s ease;\n        }\n        .main-nav a:hover { color: var(--gold); border-color: rgba(197, 160, 89, .5); }\n        .main-nav a.active {\n            color: var(--dark);\n            background: var(--gold);\n            border-color: var(--gold);\n        }\n\n        .header-actions { display: inline-flex; align-items: center; gap: .7rem; }\n        .btn-login {\n            color: #E8E2D4;\n            font-weight: 600;\n            font-size: .95rem;\n            padding: .45rem .35rem;\n        }\n        .btn-login:hover { color: var(--gold); }\n        .btn-signup {\n            background: var(--gold);\n            color: var(--dark) !important;\n            font-weight: 700;\n            font-size: .95rem;\n            padding: .5rem 1.15rem;\n            border: 2px solid var(--ink);\n            border-radius: var(--radius-btn);\n            box-shadow: 3px 3px 0 rgba(0, 0, 0, .35);\n            transition: transform .15s ease, box-shadow .15s ease;\n        }\n        .btn-signup:hover { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 rgba(0, 0, 0, .4); }\n        .btn-signup:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 rgba(0, 0, 0, .35); }\n\n        .mobile-menu-toggle {\n            background: transparent;\n            border: 2px solid rgba(197, 160, 89, .55);\n            border-radius: 8px;\n            color: var(--gold);\n            font-size: 1.05rem;\n            padding: .4rem .6rem;\n        }\n\n        .mobile-nav {\n            display: none;\n            background: var(--dark-2);\n            border-top: 1px dashed rgba(197, 160, 89, .4);\n            padding: .6rem 1.25rem 1rem;\n        }\n        .mobile-nav.open { display: block; }\n        .mobile-nav a {\n            display: block;\n            padding: .7rem .5rem;\n            color: #D8D2C4;\n            font-weight: 600;\n            border-bottom: 1px dashed rgba(216, 210, 196, .18);\n        }\n        .mobile-nav a.active { color: var(--gold); }\n\n        /* ============ HERO / BANNER ============ */\n        .cat-hero {\n            margin-top: 66px;\n            position: relative;\n            background: url('/assets/images/backpic/back-2.jpg') center / cover no-repeat;\n            padding: 5.5rem 0 6.5rem;\n        }\n        .cat-hero::before {\n            content: '';\n            position: absolute;\n            inset: 0;\n            background: linear-gradient(100deg, rgba(28, 26, 22, .93) 0%, rgba(28, 26, 22, .78) 55%, rgba(28, 26, 22, .55) 100%);\n        }\n        .cat-hero .container { position: relative; z-index: 2; }\n        .hero-breadcrumb {\n            font-family: 'Itim', cursive;\n            color: rgba(245, 240, 228, .75);\n            font-size: .98rem;\n            margin-bottom: 1.1rem;\n        }\n        .hero-breadcrumb a { color: var(--gold); }\n        .hero-breadcrumb i { font-size: .7rem; margin: 0 .45rem; }\n        .cat-hero h1 {\n            color: #FBF7ED;\n            max-width: 720px;\n            margin-bottom: 1.1rem;\n        }\n        .cat-hero h1 .hl { color: var(--gold); }\n        .cat-hero .hero-sub {\n            color: rgba(245, 240, 228, .88);\n            font-size: 1.12rem;\n            max-width: 620px;\n            margin-bottom: 1.8rem;\n        }\n        .hero-cta-row { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }\n        .btn-primary-sketch {\n            display: inline-flex;\n            align-items: center;\n            gap: .6rem;\n            background: var(--gold);\n            color: var(--dark);\n            font-weight: 800;\n            font-size: 1.05rem;\n            padding: .85rem 1.7rem;\n            border: var(--sketch-border);\n            border-radius: var(--radius-btn);\n            box-shadow: 4px 4px 0 rgba(0, 0, 0, .45);\n            transition: transform .15s ease, box-shadow .15s ease;\n        }\n        .btn-primary-sketch:hover { color: var(--dark); transform: translate(-2px, -2px); box-shadow: 7px 7px 0 rgba(0, 0, 0, .5); }\n        .btn-primary-sketch:active { transform: translate(1px, 1px); box-shadow: 2px 2px 0 rgba(0, 0, 0, .45); }\n        .btn-ghost-sketch {\n            display: inline-flex;\n            align-items: center;\n            gap: .55rem;\n            color: #F5F0E4;\n            font-weight: 700;\n            font-size: 1rem;\n            padding: .8rem 1.5rem;\n            border: 2px dashed rgba(245, 240, 228, .65);\n            border-radius: var(--radius-btn);\n            transition: all .2s ease;\n        }\n        .btn-ghost-sketch:hover { color: var(--gold); border-color: var(--gold); }\n\n        .hero-quick-stats {\n            display: flex;\n            flex-wrap: wrap;\n            gap: 1rem;\n            margin-top: 2.3rem;\n        }\n        .stat-chip {\n            background: rgba(250, 245, 234, .96);\n            border: var(--sketch-border);\n            border-radius: var(--sketch-radius);\n            padding: .7rem 1.3rem;\n            box-shadow: var(--shadow-note);\n            transform: rotate(-.6deg);\n        }\n        .stat-chip:nth-child(2) { transform: rotate(.8deg); background: var(--note-yellow); }\n        .stat-chip:nth-child(3) { transform: rotate(-1deg); background: var(--note-mint); }\n        .stat-chip strong { display: block; font-size: 1.3rem; font-weight: 800; color: var(--ink); }\n        .stat-chip span { font-size: .85rem; color: var(--ink-soft); }\n\n        /* ============ STEPS BAR ============ */\n        .steps-section { padding: var(--space-section) 0 3.5rem; }\n        .steps-rail { position: relative; margin-top: 2.4rem; }\n        .steps-rail::before {\n            content: '';\n            position: absolute;\n            top: 44px; left: 6%; right: 6%;\n            border-top: 3px dashed rgba(43, 38, 32, .35);\n            z-index: 0;\n        }\n        .step-item { position: relative; z-index: 1; padding: 0 .8rem; }\n        .step-num {\n            width: 88px; height: 88px;\n            margin-bottom: 1.1rem;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            font-family: 'Itim', cursive;\n            font-size: 2rem;\n            color: var(--ink);\n            background: var(--paper);\n            border: 3px solid var(--ink);\n            border-radius: 46% 54% 52% 48% / 52% 48% 52% 48%;\n            box-shadow: var(--shadow-note);\n            transition: transform .2s ease;\n        }\n        .step-item:hover .step-num { transform: rotate(-6deg) scale(1.05); }\n        .step-item:nth-child(1) .step-num { background: var(--note-yellow); }\n        .step-item:nth-child(2) .step-num { background: var(--note-mint); }\n        .step-item:nth-child(3) .step-num { background: var(--note-pink); }\n        .step-item h3 { margin-bottom: .4rem; }\n        .step-item p { color: var(--ink-soft); font-size: .97rem; margin: 0; }\n        .step-mini-note {\n            display: inline-block;\n            margin-top: .7rem;\n            font-family: 'Itim', cursive;\n            font-size: .92rem;\n            color: var(--gold-deep);\n            border-bottom: 2px dashed var(--gold);\n        }\n\n        /* ============ APP SHOWCASE ============ */\n        .showcase-section { padding: 3.5rem 0 var(--space-section); }\n        .showcase-wrap { align-items: center; }\n        .showcase-img-frame {\n            position: relative;\n            border: 3px solid var(--ink);\n            border-radius: var(--sketch-radius-2);\n            overflow: hidden;\n            box-shadow: var(--shadow-note-hover);\n            transform: rotate(-1.4deg);\n        }\n        .showcase-img-frame img { width: 100%; object-fit: cover; }\n        .showcase-tape {\n            position: absolute;\n            top: -14px; left: 50%;\n            transform: translateX(-50%) rotate(-3deg);\n            width: 150px; height: 34px;\n            background: rgba(255, 243, 176, .85);\n            border: 1px solid rgba(43, 38, 32, .25);\n            z-index: 3;\n        }\n        .feature-list { list-style: none; margin-top: 1.6rem; }\n        .feature-list li {\n            display: flex;\n            gap: 1rem;\n            padding: 1rem 0;\n            border-bottom: 1px dashed rgba(43, 38, 32, .28);\n        }\n        .feature-list li:last-child { border-bottom: 0; }\n        .feature-ico {\n            flex: 0 0 46px;\n            width: 46px; height: 46px;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            font-size: 1.15rem;\n            color: var(--ink);\n            background: var(--note-blue);\n            border: var(--sketch-border);\n            border-radius: 42% 58% 50% 50% / 55% 45% 55% 45%;\n        }\n        .feature-list li:nth-child(2) .feature-ico { background: var(--note-yellow); }\n        .feature-list li:nth-child(3) .feature-ico { background: var(--note-mint); }\n        .feature-list li:nth-child(4) .feature-ico { background: var(--note-pink); }\n        .feature-list h4 { margin-bottom: .25rem; }\n        .feature-list p { margin: 0; color: var(--ink-soft); font-size: .96rem; }\n\n        .os-badges { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }\n        .os-badge {\n            display: inline-flex;\n            align-items: center;\n            gap: .55rem;\n            background: var(--dark);\n            color: #F5F0E4;\n            font-weight: 600;\n            font-size: .92rem;\n            padding: .55rem 1.1rem;\n            border-radius: var(--radius-btn);\n            border: 2px solid var(--gold);\n        }\n        .os-badge i { color: var(--gold); }\n\n        /* ============ STUCK POINTS ============ */\n        .stuck-section {\n            padding: var(--space-section) 0;\n            background: var(--paper-soft);\n            border-top: 3px dashed rgba(43, 38, 32, .25);\n            border-bottom: 3px dashed rgba(43, 38, 32, .25);\n        }\n        .stuck-grid { margin-top: 2.4rem; }\n        .stuck-note {\n            position: relative;\n            background: var(--note-yellow);\n            border: var(--sketch-border);\n            border-radius: 6px 14px 8px 16px;\n            padding: 1.5rem 1.4rem 1.4rem;\n            box-shadow: var(--shadow-note);\n            height: 100%;\n            transition: transform .2s ease, box-shadow .2s ease;\n        }\n        .stuck-note:hover { transform: translateY(-5px) rotate(-.6deg); box-shadow: var(--shadow-note-hover); }\n        .stuck-note.n2 { background: var(--note-mint); transform: rotate(.7deg); }\n        .stuck-note.n2:hover { transform: translateY(-5px) rotate(1.1deg); }\n        .stuck-note.n3 { background: var(--note-pink); transform: rotate(-.8deg); }\n        .stuck-note.n3:hover { transform: translateY(-5px) rotate(-1.2deg); }\n        .stuck-note.n4 { background: var(--note-blue); transform: rotate(.5deg); }\n        .stuck-note.n4:hover { transform: translateY(-5px) rotate(.9deg); }\n        .stuck-pin {\n            position: absolute;\n            top: -12px; left: 24px;\n            width: 22px; height: 22px;\n            background: var(--red);\n            border: 2px solid var(--ink);\n            border-radius: 50%;\n            box-shadow: 2px 3px 0 rgba(43, 38, 32, .3);\n        }\n        .stuck-note h3 { display: flex; align-items: center; gap: .6rem; font-size: 1.08rem; }\n        .stuck-note h3 i { color: var(--red); }\n        .stuck-note p { color: var(--ink-soft); font-size: .95rem; margin-bottom: .6rem; }\n        .stuck-fix {\n            font-family: 'Itim', cursive;\n            font-size: .95rem;\n            color: var(--ink);\n            background: rgba(250, 245, 234, .75);\n            border-left: 4px solid var(--gold-deep);\n            padding: .5rem .8rem;\n            border-radius: 0 10px 10px 0;\n        }\n        .stuck-fix i { color: var(--gold-deep); margin-right: .35rem; }\n\n        /* ============ TESTIMONIALS ============ */\n        .voices-section { padding: var(--space-section) 0; }\n        .voices-head { max-width: 560px; }\n        .voice-card {\n            background: #fff;\n            border: var(--sketch-border);\n            border-radius: var(--sketch-radius);\n            padding: 1.6rem 1.5rem 1.4rem;\n            box-shadow: var(--shadow-note);\n            height: 100%;\n            transition: transform .2s ease, box-shadow .2s ease;\n        }\n        .voice-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-note-hover); }\n        .voice-quote {\n            font-family: 'Itim', cursive;\n            font-size: 1.05rem;\n            color: var(--ink);\n            margin-bottom: 1.1rem;\n        }\n        .voice-quote i { color: var(--gold); margin-right: .4rem; }\n        .voice-meta { display: flex; align-items: center; gap: .8rem; }\n        .voice-avatar {\n            width: 44px; height: 44px;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            font-family: 'Itim', cursive;\n            font-size: 1.05rem;\n            color: var(--dark);\n            background: var(--gold);\n            border: 2px solid var(--ink);\n            border-radius: 50% 46% 54% 50% / 48% 52% 48% 52%;\n        }\n        .voice-meta strong { display: block; font-size: .95rem; }\n        .voice-meta span { font-size: .82rem; color: var(--ink-soft); }\n        .voice-stars { color: var(--gold-deep); font-size: .8rem; margin-top: .15rem; }\n\n        /* ============ FAQ ============ */\n        .faq-section {\n            padding: var(--space-section) 0;\n            background: var(--paper-soft);\n            border-top: 3px dashed rgba(43, 38, 32, .25);\n        }\n        .faq-list { margin-top: 2rem; }\n        .faq-item {\n            background: #fff;\n            border: var(--sketch-border);\n            border-radius: 14px 6px 16px 8px;\n            margin-bottom: 1rem;\n            box-shadow: 3px 4px 0 rgba(43, 38, 32, .12);\n            overflow: hidden;\n        }\n        .faq-item summary {\n            list-style: none;\n            display: flex;\n            justify-content: space-between;\n            align-items: center;\n            gap: 1rem;\n            padding: 1.1rem 1.4rem;\n            font-weight: 700;\n            font-size: 1.02rem;\n            cursor: pointer;\n            transition: background .2s ease;\n        }\n        .faq-item summary::-webkit-details-marker { display: none; }\n        .faq-item summary:hover { background: var(--note-yellow); }\n        .faq-item summary .faq-toggle {\n            flex: 0 0 30px;\n            width: 30px; height: 30px;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            border: 2px solid var(--ink);\n            border-radius: 50%;\n            font-size: .8rem;\n            transition: transform .25s ease, background .25s ease;\n        }\n        .faq-item[open] summary .faq-toggle { transform: rotate(45deg); background: var(--gold); }\n        .faq-body {\n            padding: 0 1.4rem 1.2rem;\n            color: var(--ink-soft);\n            font-size: .98rem;\n            border-top: 1px dashed rgba(43, 38, 32, .25);\n        }\n        .faq-body p { margin: .9rem 0 0; }\n\n        /* ============ FINAL CTA ============ */\n        .final-cta {\n            padding: var(--space-section) 0;\n            background: var(--dark);\n            position: relative;\n            overflow: hidden;\n        }\n        .final-cta::before {\n            content: '\\2660  \\2665  \\2663  \\2666';\n            position: absolute;\n            font-size: 9rem;\n            letter-spacing: 3rem;\n            color: rgba(197, 160, 89, .07);\n            top: 50%; left: 50%;\n            transform: translate(-50%, -50%);\n            white-space: nowrap;\n            pointer-events: none;\n        }\n        .final-cta .container { position: relative; z-index: 1; text-align: center; }\n        .final-cta h2 { color: #FBF7ED; max-width: 680px; margin: 0 auto 1rem; }\n        .final-cta h2 .hl { color: var(--gold); }\n        .final-cta p { color: rgba(245, 240, 228, .82); max-width: 560px; margin: 0 auto 1.8rem; }\n        .cta-pay-row {\n            display: flex;\n            flex-wrap: wrap;\n            justify-content: center;\n            gap: .8rem;\n            margin-top: 2rem;\n        }\n        .pay-badge {\n            display: inline-flex;\n            align-items: center;\n            gap: .5rem;\n            color: #E8E2D4;\n            font-size: .9rem;\n            font-weight: 600;\n            border: 1px dashed rgba(197, 160, 89, .55);\n            border-radius: 999px;\n            padding: .45rem 1.05rem;\n        }\n        .pay-badge i { color: var(--gold); }\n\n        /* ============ FOOTER ============ */\n        .main-footer {\n            background: var(--dark-2);\n            color: #C9C2B2;\n            padding: 3.8rem 0 0;\n            border-top: 3px solid var(--gold);\n        }\n        .footer-grid {\n            display: grid;\n            grid-template-columns: 1.6fr 1fr 1fr 1fr;\n            gap: 2.5rem;\n            padding-bottom: 2.6rem;\n        }\n        .main-footer h3 {\n            font-family: 'Itim', cursive;\n            color: var(--gold);\n            font-size: 1.25rem;\n            margin-bottom: .9rem;\n        }\n        .main-footer h4 {\n            color: #F0EADC;\n            font-size: 1rem;\n            margin-bottom: 1rem;\n            padding-bottom: .5rem;\n            border-bottom: 2px dashed rgba(197, 160, 89, .35);\n            display: inline-block;\n        }\n        .footer-about p { font-size: .93rem; color: #B4AC9B; }\n        .footer-badges { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; }\n        .footer-badge {\n            display: inline-flex;\n            align-items: center;\n            gap: .4rem;\n            font-size: .8rem;\n            font-weight: 700;\n            color: var(--gold);\n            border: 1px solid rgba(197, 160, 89, .5);\n            border-radius: 8px;\n            padding: .3rem .7rem;\n        }\n        .footer-links { list-style: none; }\n        .footer-links li { margin-bottom: .55rem; }\n        .footer-links a { color: #B4AC9B; font-size: .93rem; transition: color .2s ease, padding-left .2s ease; }\n        .footer-links a:hover { color: var(--gold); padding-left: 4px; }\n        .footer-links i { color: var(--gold); width: 18px; }\n        .footer-bottom {\n            border-top: 1px dashed rgba(197, 160, 89, .3);\n            padding: 1.2rem 0;\n            text-align: center;\n            font-size: .85rem;\n            color: #8F8878;\n        }\n        .footer-bottom a { color: var(--gold); }\n\n        /* ============ FAB ============ */\n        .fab-support {\n            position: fixed;\n            left: 1rem;\n            bottom: 6rem;\n            z-index: 90;\n            width: 64px; height: 64px;\n            display: flex;\n            align-items: center;\n            justify-content: center;\n            background: radial-gradient(circle at 32% 28%, #3A3730, var(--dark) 70%);\            border: 3px solid var(--gold);
            border-radius: 50%;
            color: var(--gold);
            font-size: 1.5rem;
            opacity: .7;
            box-shadow: 0 4px 20px rgba(255, 215, 0, .3), inset 0 2px 4px rgba(255, 255, 255, .12);
            animation: fabFloat 3.2s ease-in-out infinite;
            transition: transform .2s ease, opacity .2s ease, box-shadow .2s ease;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            color: var(--gold);
            box-shadow: 0 6px 28px rgba(255, 215, 0, .45);
        }
        .fab-support:hover i { animation: fabSpin .6s ease; }
        .fab-support:active { transform: scale(.95) translateY(2px); }
        .fab-support .fab-dot {
            position: absolute;
            top: 4px; right: 4px;
            width: 13px; height: 13px;
            background: var(--red);
            border: 2px solid var(--dark);
            border-radius: 50%;
            animation: fabBlink 1.4s ease-in-out infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-7px); }
        }
        @keyframes fabSpin {
            from { transform: rotate(0); }
            to { transform: rotate(360deg); }
        }
        @keyframes fabBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: .3; }
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root { --space-section: 4.2rem; }
            h1 { font-size: 2.15rem; }
            h2 { font-size: 1.7rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
        }
        @media (max-width: 768px) {
            body { font-size: 15.5px; }
            .cat-hero { padding: 3.8rem 0 4.4rem; }
            .steps-rail::before { display: none; }
            .step-item { margin-bottom: 2.2rem; }
            .showcase-img-frame { margin-bottom: 2.2rem; transform: rotate(-.8deg); }
            .hero-quick-stats { gap: .7rem; }
            .stat-chip { padding: .6rem 1rem; }
            .stuck-note { margin-bottom: 1.4rem; height: auto; }
            .voice-card { margin-bottom: 1.4rem; height: auto; }
        }
        @media (max-width: 520px) {
            :root { --space-section: 3.2rem; }
            h1 { font-size: 1.72rem; }
            h2 { font-size: 1.42rem; }
            .logo span { font-size: 1.02rem; }
            .btn-signup { padding: .42rem .8rem; font-size: .85rem; }
            .btn-login { font-size: .85rem; }
            .header-actions { gap: .45rem; }
            .cat-hero { margin-top: 62px; }
            .cat-hero .hero-sub { font-size: 1rem; }
            .hero-cta-row { flex-direction: column; align-items: stretch; }
            .btn-primary-sketch, .btn-ghost-sketch { justify-content: center; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
            .fab-support { width: 54px; height: 54px; font-size: 1.25rem; bottom: 5rem; }
            .final-cta::before { font-size: 5rem; letter-spacing: 1.4rem; }
        }

/* roulang page: category2 */
/* ============ DESIGN TOKENS ============ */
        :root {
            --paper: #FBF5E9;
            --paper-deep: #F4EBD8;
            --paper-card: #FFFDF6;
            --ink: #2E2A24;
            --ink-soft: #6B6154;
            --line: #2E2A24;
            --red: #C0392B;
            --red-deep: #96281B;
            --gold: #B8860B;
            --gold-soft: #E8C874;
            --note-yellow: #FFF3B0;
            --note-pink: #FFD9DC;
            --note-green: #D9F0C4;
            --note-blue: #CDE8F6;
            --sketch-radius: 255px 15px 225px 15px / 15px 225px 15px 255px;
            --sketch-radius-sm: 125px 10px 115px 10px / 10px 115px 10px 125px;
            --shadow-note: 3px 4px 0 rgba(46, 42, 36, 0.14);
            --shadow-lift: 5px 7px 0 rgba(46, 42, 36, 0.18);
            --font-head: 'Baloo 2', 'Be Vietnam Pro', sans-serif;
            --font-body: 'Be Vietnam Pro', sans-serif;
        }

        /* ============ BASE / RESET ============ */
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.65;
            color: var(--ink);
            background-color: var(--paper);
            background-image:
                radial-gradient(rgba(46,42,36,0.045) 1px, transparent 1px),
                linear-gradient(180deg, rgba(232,200,116,0.10), transparent 320px);
            background-size: 26px 26px, 100% 100%;
        }
        img { max-width: 100%; display: block; }
        a { color: var(--red); text-decoration: none; transition: color .2s ease; }
        a:hover, a:focus { color: var(--red-deep); }
        a:focus-visible, button:focus-visible { outline: 3px dashed var(--gold); outline-offset: 3px; }
        button { font-family: inherit; cursor: pointer; }
        h1, h2, h3, h4 { font-family: var(--font-head); color: var(--ink); line-height: 1.25; margin-top: 0; }
        p { margin: 0 0 1rem; }
        .container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

        .section { padding: 72px 0; }
        .section-tag {
            display: inline-block;
            font-family: var(--font-head);
            font-weight: 700;
            font-size: .82rem;
            letter-spacing: .06em;
            text-transform: uppercase;
            color: var(--red-deep);
            background: var(--note-yellow);
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius-sm);
            padding: 4px 16px;
            box-shadow: var(--shadow-note);
            margin-bottom: 14px;
            transform: rotate(-1.2deg);
        }
        .section-title { font-size: 2rem; font-weight: 800; margin-bottom: .5rem; }
        .section-sub { color: var(--ink-soft); max-width: 640px; margin-bottom: 2.2rem; }
        .sketch-divider {
            border: none;
            border-top: 3px dashed rgba(46,42,36,0.25);
            margin: 0 auto;
            max-width: 1140px;
        }

        /* ============ HEADER / NAV ============ */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--paper-card);
            border-bottom: 3px solid var(--line);
            box-shadow: 0 3px 0 rgba(46,42,36,0.08);
        }
        .main-header .top-bar { background: transparent; padding: 12px 0; }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-head);
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--ink);
        }
        .logo i { color: var(--gold); font-size: 1.35rem; }
        .logo:hover { color: var(--red); }
        .main-nav {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            gap: 6px;
        }
        .main-nav li a {
            display: inline-block;
            font-family: var(--font-head);
            font-weight: 700;
            font-size: .98rem;
            color: var(--ink);
            padding: 8px 18px;
            border: 2px solid transparent;
            border-radius: var(--sketch-radius-sm);
            transition: all .2s ease;
        }
        .main-nav li a:hover { border-color: var(--line); background: var(--note-yellow); transform: rotate(-1deg); }
        .main-nav li a.active {
            background: var(--red);
            color: #FFFDF6;
            border-color: var(--line);
            box-shadow: var(--shadow-note);
            transform: rotate(-1.5deg);
        }
        .header-actions { display: inline-flex; align-items: center; gap: 10px; }
        .btn-login {
            font-family: var(--font-head);
            font-weight: 700;
            color: var(--ink);
            padding: 7px 10px;
        }
        .btn-login:hover { color: var(--red); text-decoration: underline wavy var(--gold); }
        .btn-signup {
            font-family: var(--font-head);
            font-weight: 800;
            background: var(--red);
            color: #FFFDF6;
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius-sm);
            padding: 7px 20px;
            box-shadow: var(--shadow-note);
            transition: all .2s ease;
        }
        .btn-signup:hover { background: var(--red-deep); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lift); }
        .mobile-menu-toggle {
            background: var(--paper-card);
            border: 2px solid var(--line);
            border-radius: 10px;
            padding: 6px 11px;
            font-size: 1.05rem;
            color: var(--ink);
            margin-left: 4px;
        }
        .mobile-nav {
            display: none;
            border-top: 2px dashed rgba(46,42,36,0.3);
            background: var(--paper-card);
            padding: 10px 20px 16px;
        }
        .mobile-nav.open { display: block; }
        .mobile-nav a {
            display: block;
            font-family: var(--font-head);
            font-weight: 700;
            padding: 10px 6px;
            color: var(--ink);
            border-bottom: 1px dashed rgba(46,42,36,0.2);
        }
        .mobile-nav a.active { color: var(--red); }

        /* ============ HERO BANNER (short) ============ */
        .cat-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(251,245,233,0.96) 0%, rgba(251,245,233,0.88) 46%, rgba(251,245,233,0.55) 100%);
        }
        .cat-hero .container { position: relative; z-index: 1; padding-top: 54px; padding-bottom: 54px; }
        .breadcrumb-line {
            font-size: .85rem;
            color: var(--ink-soft);
            margin-bottom: 12px;
        }
        .breadcrumb-line a { color: var(--ink-soft); text-decoration: underline dotted; }
        .breadcrumb-line a:hover { color: var(--red); }
        .cat-hero h1 {
            font-size: 2.45rem;
            font-weight: 800;
            max-width: 720px;
            margin-bottom: .8rem;
        }
        .cat-hero h1 .marker {
            background: linear-gradient(transparent 55%, var(--note-yellow) 55%);
            padding: 0 4px;
        }
        .cat-hero .lead-text { max-width: 620px; color: var(--ink-soft); font-size: 1.05rem; margin-bottom: 1.4rem; }
        .hero-cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-head);
            font-weight: 800;
            font-size: 1.02rem;
            background: var(--red);
            color: #FFFDF6;
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius-sm);
            padding: 12px 28px;
            box-shadow: var(--shadow-lift);
            transition: all .2s ease;
        }
        .btn-primary:hover { background: var(--red-deep); color: #fff; transform: translateY(-3px) rotate(-1deg); }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-head);
            font-weight: 700;
            color: var(--ink);
            background: var(--paper-card);
            border: 2px dashed var(--line);
            border-radius: var(--sketch-radius-sm);
            padding: 11px 24px;
            transition: all .2s ease;
        }
        .btn-ghost:hover { background: var(--note-blue); color: var(--ink); transform: rotate(1deg); }
        .hero-scribbles { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: .88rem; color: var(--ink-soft); }
        .hero-scribbles span i { color: var(--gold); margin-right: 6px; }

        /* ============ 3-STEP STRIP ============ */
        .steps-strip { padding: 64px 0 56px; }
        .step-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; position: relative; }
        .step-item {
            background: var(--paper-card);
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius);
            padding: 26px 24px 22px;
            box-shadow: var(--shadow-note);
            position: relative;
            transition: transform .2s ease, box-shadow .2s ease;
        }
        .step-item:hover { transform: translateY(-4px) rotate(-0.6deg); box-shadow: var(--shadow-lift); }
        .step-item::before {
            content: "";
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%) rotate(-3deg);
            width: 84px;
            height: 22px;
            background: rgba(232,200,116,0.55);
            border: 1px solid rgba(184,134,11,0.35);
        }
        .step-num {
            font-family: var(--font-head);
            font-weight: 800;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px; height: 42px;
            background: var(--note-yellow);
            border: 2px solid var(--line);
            border-radius: 50% 46% 52% 48% / 48% 52% 46% 52%;
            margin-bottom: 12px;
        }
        .step-item h3 { font-size: 1.18rem; font-weight: 800; margin-bottom: .4rem; }
        .step-item p { color: var(--ink-soft); font-size: .94rem; margin-bottom: .6rem; }
        .step-item .step-link { font-family: var(--font-head); font-weight: 700; font-size: .9rem; }
        .step-item .step-link i { font-size: .78rem; margin-left: 4px; }

        /* ============ DEMO / HAND CHART ============ */
        .demo-section { background: var(--paper-deep); border-top: 3px solid var(--line); border-bottom: 3px solid var(--line); }
        .demo-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
        .demo-media { position: relative; }
        .demo-media img {
            border: 3px solid var(--line);
            border-radius: var(--sketch-radius);
            box-shadow: var(--shadow-lift);
            transform: rotate(-1.4deg);
        }
        .demo-media .photo-caption {
            position: absolute;
            bottom: -16px;
            right: 8px;
            background: var(--note-pink);
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius-sm);
            font-family: var(--font-head);
            font-weight: 700;
            font-size: .85rem;
            padding: 6px 16px;
            transform: rotate(2deg);
            box-shadow: var(--shadow-note);
        }
        .hand-list { list-style: none; margin: 0 0 1.4rem; padding: 0; }
        .hand-list li {
            display: flex;
            align-items: baseline;
            gap: 14px;
            padding: 11px 4px;
            border-bottom: 2px dashed rgba(46,42,36,0.22);
        }
        .hand-list li:last-child { border-bottom: none; }
        .hand-rank {
            flex: 0 0 34px;
            font-family: var(--font-head);
            font-weight: 800;
            color: var(--gold);
            font-size: 1.05rem;
        }
        .hand-name { font-weight: 700; flex: 0 0 170px; }
        .hand-desc { color: var(--ink-soft); font-size: .92rem; }

        /* ============ STICKING POINTS (sticky notes) ============ */
        .notes-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
        .note-card {
            border: 2px solid var(--line);
            border-radius: 6px 18px 8px 20px;
            padding: 24px 24px 20px;
            box-shadow: var(--shadow-note);
            position: relative;
            transition: transform .2s ease;
        }
        .note-card:hover { transform: rotate(0deg) translateY(-4px); }
        .note-card.n-yellow { background: var(--note-yellow); transform: rotate(-0.8deg); }
        .note-card.n-pink { background: var(--note-pink); transform: rotate(0.7deg); }
        .note-card.n-green { background: var(--note-green); transform: rotate(0.5deg); }
        .note-card.n-blue { background: var(--note-blue); transform: rotate(-0.6deg); }
        .note-card::before {
            content: "";
            position: absolute;
            top: -11px;
            left: 26px;
            width: 70px;
            height: 20px;
            background: rgba(255,255,255,0.55);
            border: 1px solid rgba(46,42,36,0.2);
            transform: rotate(-2deg);
        }
        .note-card h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: .45rem; }
        .note-card h3 i { color: var(--red-deep); margin-right: 8px; }
        .note-card p { font-size: .93rem; color: #4A4238; margin-bottom: .5rem; }
        .note-fix {
            font-size: .88rem;
            font-weight: 600;
            background: rgba(255,255,255,0.6);
            border-left: 4px solid var(--red);
            padding: 8px 12px;
            border-radius: 4px;
        }
        .note-fix strong { color: var(--red-deep); }

        /* ============ CASES ============ */
        .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
        .case-card {
            background: var(--paper-card);
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius);
            overflow: hidden;
            box-shadow: var(--shadow-note);
            transition: transform .2s ease, box-shadow .2s ease;
        }
        .case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
        .case-card img { height: 165px; width: 100%; object-fit: cover; border-bottom: 2px solid var(--line); filter: saturate(.92); }
        .case-body { padding: 20px 22px 22px; }
        .case-quote { font-size: .93rem; color: var(--ink-soft); font-style: italic; margin-bottom: .9rem; }
        .case-meta { display: flex; align-items: center; justify-content: space-between; }
        .case-name { font-family: var(--font-head); font-weight: 800; font-size: .95rem; }
        .case-name small { display: block; font-family: var(--font-body); font-weight: 400; color: var(--ink-soft); font-size: .78rem; }
        .case-stat {
            font-family: var(--font-head);
            font-weight: 800;
            font-size: .85rem;
            color: var(--red-deep);
            background: var(--note-yellow);
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius-sm);
            padding: 3px 12px;
            transform: rotate(-2deg);
        }

        /* ============ FAQ (Foundation accordion, restyled) ============ */
        .faq-wrap { max-width: 780px; }
        .accordion { background: transparent; }
        .accordion-item { margin-bottom: 16px; }
        .accordion-title {
            font-family: var(--font-head);
            font-weight: 700;
            font-size: 1.02rem;
            color: var(--ink);
            background: var(--paper-card);
            border: 2px solid var(--line) !important;
            border-radius: var(--sketch-radius-sm);
            padding: 16px 52px 16px 22px;
        }
        .accordion-title:hover, .accordion-title:focus { background: var(--note-yellow); color: var(--ink); }
        .accordion-title::before { font-size: 1.4rem; color: var(--red); margin-top: -0.7rem; }
        .is-active > .accordion-title { background: var(--note-yellow); border-radius: 14px 14px 0 0; }
        .accordion-content {
            border: 2px dashed var(--line) !important;
            border-top: none !important;
            background: var(--paper-card);
            color: var(--ink-soft);
            font-size: .95rem;
            border-radius: 0 0 14px 14px;
            padding: 18px 22px;
        }

        /* ============ FINAL CTA ============ */
        .final-cta {
            position: relative;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            border-top: 3px solid var(--line);
        }
        .final-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(251,245,233,0.93);
        }
        .final-cta .container { position: relative; z-index: 1; text-align: center; padding-top: 78px; padding-bottom: 78px; }
        .final-cta h2 { font-size: 2rem; font-weight: 800; max-width: 640px; margin: 0 auto .8rem; }
        .final-cta p { color: var(--ink-soft); max-width: 560px; margin: 0 auto 1.6rem; }
        .cta-pay-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
        .pay-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-head);
            font-weight: 700;
            font-size: .85rem;
            background: var(--paper-card);
            border: 2px solid var(--line);
            border-radius: var(--sketch-radius-sm);
            padding: 7px 16px;
            color: var(--ink);
        }
        .pay-badge i { color: var(--red); }

        /* ============ FOOTER ============ */
        .main-footer {
            background: #2E2A24;
            color: #D8CFC0;
            border-top: 6px solid var(--gold);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .main-footer h3 { font-family: var(--font-head); color: var(--gold-soft); font-size: 1.25rem; font-weight: 800; margin-bottom: .8rem; }
        .main-footer h4 { font-family: var(--font-head); color: #FFFDF6; font-size: 1rem; font-weight: 700; margin-bottom: .9rem; }
        .footer-about p { font-size: .9rem; color: #B7AC99; }
        .footer-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
        .footer-badge {
            font-size: .78rem;
            font-weight: 600;
            border: 1px solid var(--gold);
            color: var(--gold-soft);
            border-radius: 999px;
            padding: 4px 12px;
        }
        .footer-links { list-style: none; margin: 0; padding: 0; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: #D8CFC0; font-size: .9rem; }
        .footer-links a:hover { color: var(--gold-soft); padding-left: 4px; }
        .footer-links i { color: var(--gold); width: 20px; }
        .footer-bottom {
            border-top: 1px dashed rgba(216,207,192,0.3);
            padding: 20px 0;
            font-size: .82rem;
            color: #8F8574;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
        }

        /* ============ FAB (royal chip, lower-left) ============ */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 200;
            width: 62px;
            height: 62px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: radial-gradient(circle at 32% 28%, #4A0007, #2B0004 70%);
            border: 4px solid #FFD700;
            border-radius: 50%;
            color: #FFD700;
            font-size: 1.45rem;
            opacity: .7;
            box-shadow: 0 4px 20px rgba(255,215,0,0.3), inset 0 0 0 2px rgba(255,255,255,0.12);
            animation: fabFloat 3.2s ease-in-out infinite;
            transition: transform .25s ease, opacity .25s ease;
        }
        .fab-support:hover { transform: scale(1.1); opacity: 1; color: #FFD700; }
        .fab-support:hover i { transform: rotate(360deg); transition: transform .5s ease; }
        .fab-support:active { transform: scale(0.95) translateY(2px); }
        .fab-support .fab-dot {
            position: absolute;
            top: 2px;
            right: 4px;
            width: 12px; height: 12px;
            background: #E0115F;
            border: 2px solid #FFFDF6;
            border-radius: 50%;
            animation: fabBlink 1.4s infinite;
        }
        @keyframes fabFloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
        @keyframes fabBlink { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .cat-hero h1 { font-size: 2.05rem; }
            .demo-grid { gap: 32px; }
            .case-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .section { padding: 54px 0; }
            .cat-hero h1 { font-size: 1.72rem; }
            .step-row { grid-template-columns: 1fr; gap: 30px; }
            .demo-grid { grid-template-columns: 1fr; }
            .demo-media { margin-bottom: 26px; }
            .notes-grid { grid-template-columns: 1fr; }
            .case-grid { grid-template-columns: 1fr; }
            .hand-name { flex-basis: 130px; }
            .main-nav { display: none; }
        }
        @media (max-width: 520px) {
            .cat-hero .container { padding-top: 40px; padding-bottom: 40px; }
            .cat-hero h1 { font-size: 1.5rem; }
            .section-title { font-size: 1.55rem; }
            .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
            .header-actions { gap: 6px; }
            .btn-signup { padding: 6px 12px; font-size: .85rem; }
            .btn-login { padding: 6px 4px; font-size: .85rem; }
            .logo span { font-size: .95rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; text-align: left; }
            .final-cta h2 { font-size: 1.5rem; }
            .fab-support { width: 54px; height: 54px; bottom: 84px; }
        }