/* roulang page: index */
:root {
            /* Primary Palette */
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --bg-tertiary: #0A3B2B;
            --bg-card: #082E20;
            --bg-card-hover: #0D402F;
            
            /* Accent */
            --accent-amber: #F59E0B;
            --accent-amber-dark: #B45309;
            --accent-amber-light: #FCD34D;
            --accent-leaf: #10B981;
            --accent-leaf-dark: #047857;
            
            /* Text */
            --text-primary: #F0FDF4;
            --text-secondary: #A7F3D0;
            --text-muted: #6B7280;
            --text-warm: #FEF3C7;
            
            /* Borders & Shadows */
            --border-subtle: rgba(245, 158, 11, 0.15);
            --border-gold: rgba(245, 158, 11, 0.4);
            --shadow-amber: 0 4px 20px rgba(245, 158, 11, 0.15);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(245,158,11,0.25);
            
            /* Typography */
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            
            /* Radius */
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            
            /* Spacing */
            --space-section: 80px;
            --space-container: 1200px;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        
        .container {
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 26, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            padding: 0;
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo-link {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo-link i {
            font-size: 1.6rem;
            color: var(--accent-amber);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            background: var(--bg-tertiary);
            color: var(--accent-amber);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--accent-amber);
            color: var(--bg-primary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none;
            color: var(--bg-primary);
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-amber);
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35);
        }
        .mobile-menu-trigger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }
        
        /* Hero Section - Skewed */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #031A12 0%, #062E20 60%, #0A3B2B 100%);
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            margin-top: 72px;
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0% 100%);
            padding: 40px 0 100px;
        }
        .hero-bg-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/bb842607012ab121.jpg') center/cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-text {
            flex: 1 1 500px;
        }
        .hero-label {
            display: inline-block;
            background: rgba(16, 185, 129, 0.2);
            border: 1px solid var(--accent-leaf);
            color: var(--accent-leaf);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero-text h1 {
            font-family: var(--font-display);
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.25;
            color: #FFFFFF;
            margin-bottom: 20px;
        }
        .hero-text h1 span {
            color: var(--accent-amber);
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
            line-height: 1.7;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary-gold {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-amber);
            transition: all 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
        }
        .btn-outline-leaf {
            background: transparent;
            border: 2px solid var(--accent-leaf);
            color: var(--accent-leaf);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-leaf:hover {
            background: var(--accent-leaf);
            color: #fff;
        }
        .hero-visual {
            flex: 0 0 380px;
            background: rgba(8, 46, 32, 0.6);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
            width: 100%;
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .hero-stat {
            flex: 1;
            text-align: center;
        }
        .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-amber);
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        
        /* Sections General */
        .section {
            padding: var(--space-section) 0;
        }
        .section-dark {
            background: var(--bg-secondary);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 48px;
            max-width: 700px;
        }
        
        /* KPI Board */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
            gap: 24px;
        }
        .kpi-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all 0.3s;
        }
        .kpi-card:hover {
            border-color: var(--accent-amber);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .kpi-icon {
            font-size: 2.2rem;
            color: var(--accent-amber);
            margin-bottom: 12px;
        }
        .kpi-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
        }
        .kpi-label {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 4px;
        }
        
        /* Service Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
            gap: 28px;
        }
        .matrix-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
        }
        .matrix-card:hover {
            border-color: var(--accent-amber);
            box-shadow: var(--shadow-card-hover);
        }
        .matrix-img {
            height: 180px;
            object-fit: cover;
        }
        .matrix-body {
            padding: 20px;
        }
        .matrix-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .matrix-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .matrix-tag {
            background: rgba(245,158,11,0.15);
            color: var(--accent-amber);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        
        /* Compare Table */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
        }
        .compare-table th {
            background: var(--bg-tertiary);
            padding: 16px;
            font-weight: 700;
            text-align: left;
            color: var(--accent-amber);
        }
        .compare-table td {
            padding: 16px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }
        .check-icon {
            color: var(--accent-leaf);
        }
        .cross-icon {
            color: #EF4444;
        }
        
        /* Milestones */
        .timeline {
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-gold);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 32px;
        }
        .timeline-dot {
            position: absolute;
            left: -29px;
            top: 4px;
            width: 14px;
            height: 14px;
            background: var(--accent-amber);
            border-radius: 50%;
            border: 3px solid var(--bg-primary);
        }
        .timeline-item h3 {
            font-weight: 700;
            margin-bottom: 6px;
        }
        .timeline-item p {
            color: var(--text-secondary);
        }
        
        /* CMS List Area */
        .cms-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }
        .cms-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
        }
        .cms-card:hover {
            border-color: var(--accent-amber);
            transform: translateY(-4px);
        }
        .cms-card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
        }
        .cms-card-body {
            padding: 18px;
        }
        .cms-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: #fff;
        }
        .cms-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .cms-card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        
        /* Platform Security */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
            gap: 20px;
        }
        .security-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            background: var(--bg-card);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }
        .security-item i {
            font-size: 2rem;
            color: var(--accent-amber);
        }
        
        /* Quick Answers */
        .qa-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px,1fr));
            gap: 20px;
        }
        .qa-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px;
            border-left: 4px solid var(--accent-amber);
        }
        .qa-card h4 {
            font-weight: 700;
            margin-bottom: 8px;
        }
        
        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 20px;
            color: var(--text-secondary);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-size: 0.9rem;
        }
        .footer-col a:hover {
            color: var(--accent-amber);
        }
        .footer-bottom {
            text-align: center;
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            font-size: 0.85rem;
        }
        
        /* FAB */
        .fab {
            position: fixed;
            left: 24px;
            bottom: 96px;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent-amber), #B45309);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg-primary);
            font-size: 1.4rem;
            box-shadow: 0 6px 25px rgba(245,158,11,0.35);
            z-index: 50;
            transition: all 0.3s;
            border: 2px solid #FCD34D;
        }
        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(245,158,11,0.5);
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                flex-direction: column;
            }
            .hero-text h1 {
                font-size: 2.4rem;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--bg-primary);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-menu.open {
                display: flex;
            }
            .mobile-menu-trigger {
                display: block;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .hero-text h1 {
                font-size: 1.9rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --bg-tertiary: #0A3B2B;
            --bg-card: #082E20;
            --bg-card-hover: #0D402F;
            --accent-amber: #F59E0B;
            --accent-amber-dark: #B45309;
            --accent-amber-light: #FCD34D;
            --accent-leaf: #10B981;
            --accent-leaf-dark: #047857;
            --text-primary: #F0FDF4;
            --text-secondary: #A7F3D0;
            --text-muted: #6B7280;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245, 158, 11, 0.15);
            --border-gold: rgba(245, 158, 11, 0.4);
            --shadow-amber: 0 4px 20px rgba(245, 158, 11, 0.15);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(245,158,11,0.25);
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --space-section: 80px;
            --space-container: 1200px;
        }

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

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

        .container {
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 26, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-link {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .logo-link i {
            font-size: 1.6rem;
            color: var(--accent-amber);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-menu a {
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            background: var(--bg-tertiary);
            color: var(--accent-amber);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: var(--accent-amber);
            color: var(--bg-primary);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none;
            color: var(--bg-primary);
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-amber);
            transition: all 0.2s;
            white-space: nowrap;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35);
        }

        .mobile-menu-trigger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }

        .page-wrapper {
            padding-top: 72px;
        }

        .article-hero-bar {
            background: linear-gradient(135deg, #062E20 0%, #0A3B2B 100%);
            padding: 48px 0;
            border-bottom: 1px solid var(--border-subtle);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
        }

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

        .breadcrumb i {
            font-size: 0.7rem;
        }

        .article-hero-bar h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 16px;
            font-family: var(--font-display);
        }

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

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

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

        .article-category-tag {
            display: inline-block;
            background: var(--bg-tertiary);
            color: var(--accent-amber);
            padding: 6px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.85rem;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            padding: 60px 0;
        }

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

        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-subtle);
            line-height: 1.75;
            color: var(--text-primary);
            font-size: 1.05rem;
            word-wrap: break-word;
            overflow-wrap: break-word;
        }

        .article-content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-amber);
            margin: 40px 0 16px;
            line-height: 1.3;
            font-family: var(--font-display);
        }

        .article-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-warm);
            margin: 32px 0 12px;
        }

        .article-content p {
            margin-bottom: 16px;
        }

        .article-content ul, .article-content ol {
            margin-bottom: 16px;
            padding-left: 24px;
        }

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

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        .article-content .highlight-box {
            background: var(--bg-tertiary);
            border-left: 4px solid var(--accent-amber);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            margin: 24px 0;
        }

        .article-content .step-list {
            list-style: none;
            padding: 0;
            counter-reset: step-counter;
        }

        .article-content .step-list li {
            counter-increment: step-counter;
            position: relative;
            padding-left: 48px;
            margin-bottom: 24px;
        }

        .article-content .step-list li::before {
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 0;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--bg-primary);
        }

        .article-sidebar {
            position: sticky;
            top: 96px;
            align-self: start;
        }

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

        .sidebar-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-amber);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-subtle);
        }

        .related-link-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .related-link-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: all 0.2s;
        }

        .related-link-list li a:hover {
            background: var(--bg-tertiary);
            color: var(--accent-amber);
        }

        .related-link-list li a i {
            font-size: 0.85rem;
            color: var(--accent-amber);
        }

        .trust-badge-sidebar {
            background: linear-gradient(135deg, #062E20, #0A3B2B);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
        }

        .trust-badge-sidebar i {
            font-size: 2.4rem;
            color: var(--accent-amber);
            margin-bottom: 12px;
        }

        .trust-badge-sidebar p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        .article-cta-section {
            background: linear-gradient(135deg, #062E20 0%, var(--bg-tertiary) 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            margin: 60px 0;
            text-align: center;
            border: 1px solid var(--border-gold);
            position: relative;
            overflow: hidden;
        }

        .article-cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(245,158,11,0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .article-cta-section h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-amber);
            margin-bottom: 16px;
            font-family: var(--font-display);
            position: relative;
            z-index: 1;
        }

        .article-cta-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }

        .cta-btn-large {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            padding: 16px 40px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-amber);
            transition: all 0.3s;
            position: relative;
            z-index: 1;
        }

        .cta-btn-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
        }

        .not-found-card {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-subtle);
        }

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

        .not-found-card h2 {
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .not-found-card p {
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        .not-found-card a {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 32px;
            margin-top: 60px;
        }

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

        .footer-col h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-amber);
            margin-bottom: 20px;
        }

        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: 6px 0;
        }

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

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

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-hero-bar h1 {
                font-size: 2.2rem;
            }

            .article-sidebar {
                position: static;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(3, 26, 18, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
            }

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

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

            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: inline-block;
            }

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

            .article-content {
                padding: 24px;
            }

            .article-cta-section {
                padding: 40px 24px;
            }

            .article-cta-section h3 {
                font-size: 1.5rem;
            }

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

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }

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

            .header-actions {
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .article-hero-bar {
                padding: 32px 0;
            }

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

            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .article-layout {
                padding: 40px 0;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --bg-tertiary: #0A3B2B;
            --bg-card: #082E20;
            --bg-card-hover: #0D402F;
            --accent-amber: #F59E0B;
            --accent-amber-dark: #B45309;
            --accent-amber-light: #FCD34D;
            --accent-leaf: #10B981;
            --accent-leaf-dark: #047857;
            --text-primary: #F0FDF4;
            --text-secondary: #A7F3D0;
            --text-muted: #6B7280;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245, 158, 11, 0.15);
            --border-gold: rgba(245, 158, 11, 0.4);
            --shadow-amber: 0 4px 20px rgba(245, 158, 11, 0.15);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(245,158,11,0.25);
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --space-section: 80px;
            --space-container: 1200px;
        }
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 72px;
        }
.container {
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
            position: fixed; top: 0; left: 0; width: 100%;
            background: rgba(3, 26, 18, 0.92); backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--border-subtle);
            z-index: 1000; height: 72px; display: flex; align-items: center;
        }
.header-inner {
            display: flex; align-items: center; justify-content: space-between;
            width: 100%; max-width: var(--space-container); margin: 0 auto; padding: 0 24px;
        }
.logo-link {
            font-size: 1.35rem; font-weight: 700; color: var(--accent-amber);
            display: flex; align-items: center; gap: 8px; white-space: nowrap;
        }
.logo-link i { font-size: 1.6rem; color: var(--accent-amber); }
.nav-menu { display: flex; align-items: center; gap: 8px; }
.nav-menu a {
            padding: 10px 18px; border-radius: var(--radius-md); font-weight: 500;
            color: var(--text-secondary); font-size: 0.95rem; transition: all 0.2s; white-space: nowrap;
        }
.nav-menu a:hover, .nav-menu a.active { background: var(--bg-tertiary); color: var(--accent-amber); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-login {
            background: transparent; border: 1px solid var(--border-gold); color: var(--accent-amber);
            padding: 9px 20px; border-radius: var(--radius-md); font-weight: 600;
            font-size: 0.9rem; cursor: pointer; transition: all 0.2s; white-space: nowrap;
        }
.btn-login:hover { background: var(--accent-amber); color: var(--bg-primary); }
.btn-signup {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none; color: var(--bg-primary); padding: 10px 24px; border-radius: var(--radius-md);
            font-weight: 700; font-size: 0.9rem; cursor: pointer; box-shadow: var(--shadow-amber);
            transition: all 0.2s; white-space: nowrap;
        }
.btn-signup:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35); }
.mobile-menu-trigger { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.8rem; cursor: pointer; }
.category-hero {
            position: relative; background: linear-gradient(135deg, #031A12 0%, #062E20 60%, #0A3B2B 100%);
            min-height: 70vh; display: flex; align-items: center; overflow: hidden;
            border-bottom: 1px solid var(--border-subtle);
        }
.category-hero .container { position: relative; z-index: 2; display: flex; align-items: center; gap: 48px; flex-wrap: wrap; }
.hero-content { flex: 1; min-width: 300px; }
.hero-visual { flex: 1; min-width: 300px; text-align: center; }
.hero-visual img { border-radius: var(--radius-lg); max-width: 400px; margin: 0 auto; box-shadow: var(--shadow-card); }
.hero-badge {
            display: inline-flex; align-items: center; gap: 6px;
            background: rgba(245, 158, 11, 0.15); border: 1px solid var(--border-gold);
            color: var(--accent-amber); padding: 8px 16px; border-radius: var(--radius-full);
            font-size: 0.85rem; font-weight: 600; margin-bottom: 20px;
        }
.hero-badge i { font-size: 0.9rem; }
.category-hero h1 {
            font-size: 2.8rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px;
            background: linear-gradient(135deg, var(--accent-amber-light), var(--accent-amber));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
        }
.hero-desc { color: var(--text-secondary); font-size: 1.15rem; line-height: 1.7; margin-bottom: 28px; }
.hero-stats { display: flex; gap: 32px; margin-bottom: 20px; }
.stat-item .stat-value { font-size: 2rem; font-weight: 700; color: var(--accent-amber); }
.stat-item .stat-label { font-size: 0.9rem; color: var(--text-muted); }
.btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none; color: var(--bg-primary); padding: 14px 32px; border-radius: var(--radius-md);
            font-weight: 700; font-size: 1rem; cursor: pointer; box-shadow: var(--shadow-amber);
            transition: all 0.25s; text-transform: uppercase; letter-spacing: 0.5px;
        }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4); }
section { padding: var(--space-section) 0; }
section:nth-child(even) { background: var(--bg-secondary); }
section:nth-child(odd) { background: var(--bg-primary); }
.section-header { margin-bottom: 48px; }
.section-header h2 { font-size: 2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
.section-header p { color: var(--text-secondary); font-size: 1.05rem; }
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.step-card {
            background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
            padding: 28px; transition: all 0.3s; position: relative;
        }
.step-card:hover { background: var(--bg-card-hover); border-color: var(--border-gold); transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.step-number {
            font-size: 3rem; font-weight: 800; background: linear-gradient(135deg, var(--accent-amber), var(--accent-leaf));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
            margin-bottom: 12px; line-height: 1;
        }
.step-card h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.step-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }
.requirements-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.req-card {
            background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
            padding: 24px; display: flex; gap: 16px; align-items: flex-start; transition: all 0.3s;
        }
.req-card:hover { border-color: var(--border-gold); }
.req-card .req-icon {
            font-size: 2rem; color: var(--accent-amber); flex-shrink: 0;
            width: 50px; height: 50px; display: flex; align-items: center; justify-content: center;
            background: rgba(245,158,11,0.1); border-radius: var(--radius-md);
        }
.req-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.req-card p { color: var(--text-secondary); font-size: 0.9rem; }
.issues-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.issue-card {
            background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
            padding: 24px; display: flex; gap: 14px; align-items: flex-start; transition: all 0.3s;
        }
.issue-card:hover { background: var(--bg-card-hover); border-color: var(--border-gold); }
.issue-icon {
            font-size: 1.8rem; color: #EF4444; flex-shrink: 0;
            width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
            background: rgba(239,68,68,0.1); border-radius: var(--radius-md);
        }
.issue-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.issue-card p { color: var(--text-secondary); font-size: 0.9rem; }
.version-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.version-table { width: 100%; border-collapse: collapse; background: var(--bg-card); min-width: 700px; }
.version-table th {
            background: var(--bg-tertiary); color: var(--accent-amber); font-weight: 700; text-align: left;
            padding: 14px 18px; font-size: 0.9rem; border-bottom: 2px solid var(--border-gold);
        }
.version-table td {
            padding: 14px 18px; border-bottom: 1px solid var(--border-subtle); color: var(--text-secondary); font-size: 0.9rem;
        }
.version-table tr:hover td { background: var(--bg-tertiary); }
.badge-stable {
            background: rgba(16,185,129,0.15); color: var(--accent-leaf); padding: 4px 12px;
            border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600; display: inline-block;
        }
.badge-beta {
            background: rgba(245,158,11,0.15); color: var(--accent-amber); padding: 4px 12px;
            border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600; display: inline-block;
        }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.testimonial-card {
            background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
            padding: 24px; transition: all 0.3s;
        }
.testimonial-card:hover { border-color: var(--border-gold); box-shadow: var(--shadow-card-hover); }
.testimonial-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.testimonial-avatar {
            width: 44px; height: 44px; border-radius: var(--radius-full); background: var(--bg-tertiary);
            display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--accent-amber);
        }
.testimonial-header .stars { color: var(--accent-amber); font-size: 0.9rem; }
.testimonial-card .username { font-weight: 600; color: var(--text-primary); }
.testimonial-card .comment { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }
.cta-section {
            background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
            padding: var(--space-section) 0; text-align: center; border-top: 1px solid var(--border-subtle);
        }
.cta-section h2 { font-size: 2rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
.cta-section p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; }
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.news-card {
            background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg);
            overflow: hidden; transition: all 0.3s;
        }
.news-card:hover { border-color: var(--border-gold); transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.news-card img { width: 100%; height: 200px; object-fit: cover; }
.news-card-body { padding: 20px; }
.news-card-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }
.news-card-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; margin-bottom: 12px; }
.news-card-body .news-date { color: var(--text-muted); font-size: 0.8rem; }
.empty-state { text-align: center; padding: 40px; color: var(--text-muted); font-size: 1rem; }
.site-footer {
            background: var(--bg-secondary); border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px; margin-top: 0;
        }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; margin-bottom: 32px; }
.footer-col h5 { color: var(--accent-amber); font-weight: 700; margin-bottom: 14px; font-size: 1rem; }
.footer-col a { display: block; color: var(--text-secondary); padding: 4px 0; font-size: 0.9rem; }
.footer-col a:hover { color: var(--accent-amber); }
.footer-bottom { text-align: center; color: var(--text-muted); font-size: 0.85rem; padding-top: 20px; border-top: 1px solid var(--border-subtle); }
.fab-left {
            position: fixed; left: 20px; bottom: 100px; z-index: 50;
            width: 56px; height: 56px; border-radius: var(--radius-full);
            background: radial-gradient(circle at 30% 30%, var(--accent-amber-light), var(--accent-amber-dark));
            border: 2px solid var(--accent-amber); display: flex; align-items: center; justify-content: center;
            color: var(--bg-primary); font-size: 1.6rem; cursor: pointer;
            box-shadow: 0 6px 25px rgba(245,158,11,0.35); transition: all 0.3s; opacity: 0.8;
        }
.fab-left:hover { opacity: 1; transform: scale(1.1); }
@media (max-width: 1024px) {
            .category-hero h1 { font-size: 2.2rem; }
            .category-hero .container { flex-direction: column; text-align: center; }
            .hero-visual img { max-width: 300px; }
            .hero-stats { justify-content: center; }
        }
@media (max-width: 768px) {
            .nav-menu { display: none; flex-direction: column; position: absolute; top: 72px; left: 0; width: 100%; background: rgba(3,26,18,0.98); padding: 16px; border-bottom: 1px solid var(--border-subtle); }
            .nav-menu.open { display: flex; }
            .mobile-menu-trigger { display: block; }
            .header-actions .btn-login, .header-actions .btn-signup { padding: 8px 14px; font-size: 0.8rem; }
            .category-hero h1 { font-size: 1.8rem; }
            .stat-item .stat-value { font-size: 1.5rem; }
            section { padding: 48px 0; }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --bg-tertiary: #0A3B2B;
            --bg-card: #082E20;
            --bg-card-hover: #0D402F;
            --accent-amber: #F59E0B;
            --accent-amber-dark: #B45309;
            --accent-amber-light: #FCD34D;
            --accent-leaf: #10B981;
            --accent-leaf-dark: #047857;
            --text-primary: #F0FDF4;
            --text-secondary: #A7F3D0;
            --text-muted: #6B7280;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245, 158, 11, 0.15);
            --border-gold: rgba(245, 158, 11, 0.4);
            --shadow-amber: 0 4px 20px rgba(245, 158, 11, 0.15);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(245,158,11,0.25);
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --space-section: 80px;
            --space-container: 1200px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        .container {
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 26, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo-link {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo-link i { font-size: 1.6rem; color: var(--accent-amber); }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-menu a {
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover, .nav-menu a.active { background: var(--bg-tertiary); color: var(--accent-amber); }
        .header-actions { display: flex; align-items: center; gap: 12px; }
        .btn-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-login:hover { background: var(--accent-amber); color: var(--bg-primary); }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none;
            color: var(--bg-primary);
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-amber);
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-signup:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35); }
        .mobile-menu-trigger { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.8rem; cursor: pointer; }
        .section { padding: var(--space-section) 0; }
        .section-dark { background: var(--bg-secondary); }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .hero-category {
            position: relative;
            background: linear-gradient(135deg, #031A12 0%, #062E20 60%, #0A3B2B 100%);
            min-height: 70vh;
            display: flex;
            align-items: center;
            padding-top: 80px;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: url('/assets/images/ee60e2b30b4ef534.jpg') center/cover no-repeat;
            opacity: 0.25;
            mask-image: linear-gradient(to left, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
        }
        .hero-content { position: relative; z-index: 2; max-width: 650px; }
        .hero-badge {
            display: inline-block;
            background: rgba(239, 68, 68, 0.15);
            border: 1px solid rgba(239, 68, 68, 0.3);
            color: #EF4444;
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.85rem;
            margin-bottom: 24px;
        }
        .hero-category h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.3;
            margin-bottom: 20px;
        }
        .hero-category p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .btn-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            border: none;
            box-shadow: 0 8px 24px rgba(245,158,11,0.3);
            transition: all 0.25s;
        }
        .btn-hero:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(245,158,11,0.45); }
        .metrics-row {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .metric-item {
            text-align: left;
        }
        .metric-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-amber);
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .issue-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
            margin-top: 32px;
        }
        .issue-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        .issue-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .issue-icon {
            font-size: 2.4rem;
            color: var(--accent-amber);
            margin-bottom: 20px;
        }
        .issue-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .issue-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 20px;
        }
        .btn-solution {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-amber);
            font-weight: 600;
            font-size: 0.9rem;
            transition: gap 0.2s;
        }
        .btn-solution:hover { gap: 10px; }
        .diagnostic-banner {
            background: linear-gradient(135deg, #0A3B2B, #062E20);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .diagnostic-text h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .diagnostic-text p { color: var(--text-secondary); }
        .btn-diagnostic {
            background: var(--accent-amber);
            color: var(--bg-primary);
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            white-space: nowrap;
            transition: all 0.2s;
        }
        .btn-diagnostic:hover { background: var(--accent-amber-light); transform: scale(1.04); }
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }
        .step-box {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
        }
        .step-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent-amber);
            opacity: 0.15;
            position: absolute;
            top: 16px;
            right: 24px;
            line-height: 1;
        }
        .step-box h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
        .step-box p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }
        .faq-section { margin-top: 40px; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            background: none;
            border: none;
            color: var(--text-primary);
            width: 100%;
            text-align: left;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            background: rgba(10, 59, 43, 0.5);
        }
        .faq-answer.open { max-height: 300px; }
        .faq-answer p { padding: 0 24px 20px; color: var(--text-secondary); }
        .cta-section {
            background: linear-gradient(135deg, #031A12 0%, #062E20 100%);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-xl);
            padding: 64px 40px;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.1rem;
        }
        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            padding: 16px 40px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 8px 28px rgba(245,158,11,0.3);
            transition: all 0.2s;
        }
        .btn-cta-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(245,158,11,0.45); }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: var(--space-section);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-amber);
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            padding: 6px 0;
            font-size: 0.95rem;
        }
        .footer-col a:hover { color: var(--accent-amber); }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: var(--bg-card);
            border: 2px solid var(--accent-amber);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-amber);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 6px 25px rgba(245, 158, 11, 0.25);
            transition: all 0.3s;
            opacity: 0.85;
        }
        .fab-left:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 8px 32px rgba(245, 158, 11, 0.45); }
        @media (max-width: 1024px) {
            .hero-category::before { width: 60%; opacity: 0.15; }
            .hero-category h1 { font-size: 2.2rem; }
            .diagnostic-banner { flex-direction: column; text-align: center; }
        }
        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .mobile-menu-trigger { display: block; }
            .nav-menu.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(3, 26, 18, 0.98);
                backdrop-filter: blur(20px);
                padding: 20px;
                gap: 6px;
                border-bottom: 1px solid var(--border-subtle);
            }
            .hero-category { min-height: auto; padding: 120px 0 60px; }
            .hero-category h1 { font-size: 1.9rem; }
            .hero-category::before { width: 100%; opacity: 0.1; }
            .metrics-row { gap: 20px; }
            .metric-value { font-size: 1.6rem; }
            .section { padding: 50px 0; }
        }
        @media (max-width: 520px) {
            .header-actions .btn-login, .header-actions .btn-signup { padding: 8px 14px; font-size: 0.8rem; }
            .logo-link { font-size: 1.1rem; }
            .hero-category h1 { font-size: 1.6rem; }
            .section-title { font-size: 1.5rem; }
            .issue-grid { grid-template-columns: 1fr; }
            .guide-steps { grid-template-columns: 1fr; }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --bg-tertiary: #0A3B2B;
            --bg-card: #082E20;
            --bg-card-hover: #0D402F;
            --accent-amber: #F59E0B;
            --accent-amber-dark: #B45309;
            --accent-amber-light: #FCD34D;
            --accent-leaf: #10B981;
            --accent-leaf-dark: #047857;
            --text-primary: #F0FDF4;
            --text-secondary: #A7F3D0;
            --text-muted: #6B7280;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245, 158, 11, 0.15);
            --border-gold: rgba(245, 158, 11, 0.4);
            --shadow-amber: 0 4px 20px rgba(245, 158, 11, 0.15);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(245,158,11,0.25);
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --space-section: 80px;
            --space-container: 1200px;
        }
*, *::before, *::after {
            box-sizing: border-box;
        }
body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
.container {
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }
img {
            max-width: 100%;
            height: auto;
            display: block;
        }
.site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 26, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
        }
.header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
.logo-link {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
.logo-link i {
            font-size: 1.6rem;
            color: var(--accent-amber);
        }
.nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
.nav-menu a {
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all 0.2s;
            white-space: nowrap;
        }
.nav-menu a:hover,
        .nav-menu a.active {
            background: var(--bg-tertiary);
            color: var(--accent-amber);
        }
.header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
.btn-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
.btn-login:hover {
            background: var(--accent-amber);
            color: var(--bg-primary);
        }
.btn-signup {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none;
            color: var(--bg-primary);
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-amber);
            transition: all 0.2s;
            white-space: nowrap;
        }
.btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35);
        }
.mobile-menu-trigger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }
.main-content {
            padding-top: 72px;
        }
section {
            padding: var(--space-section) 0;
        }
.hero-category {
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #0A3B2B 100%);
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
        }
.hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/649e2b8b320e007f.jpg') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
.hero-category .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
.hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0 0 20px;
            line-height: 1.2;
        }
.hero-text .accent {
            color: var(--accent-amber);
        }
.hero-text p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin: 0 0 32px;
            line-height: 1.7;
        }
.hero-visual {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            text-align: center;
        }
.security-metrics {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
.metric-item {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
        }
.metric-item:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-amber);
            transform: translateY(-3px);
        }
.metric-item .icon {
            font-size: 2.2rem;
            color: var(--accent-amber);
            margin-bottom: 12px;
        }
.metric-item h4 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-amber);
            margin: 0 0 6px;
        }
.metric-item span {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
.verification-steps {
            background: var(--bg-secondary);
        }
.steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }
.step-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
.step-card:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
.step-number {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(245, 158, 11, 0.15);
            position: absolute;
            top: 10px;
            right: 16px;
            line-height: 1;
        }
.step-card .icon {
            font-size: 2rem;
            color: var(--accent-amber);
            margin-bottom: 16px;
        }
.step-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
            position: relative;
        }
.step-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
            position: relative;
        }
.section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px;
        }
.section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
            margin: 0 0 20px;
        }
.threat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
.threat-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
        }
.threat-card:hover {
            border-color: #DC2626;
            box-shadow: 0 8px 32px rgba(220, 38, 38, 0.2);
        }
.threat-card .icon-danger {
            font-size: 2rem;
            color: #DC2626;
            margin-bottom: 16px;
        }
.threat-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
        }
.threat-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }
.checklist-container {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid var(--border-subtle);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px 40px;
            margin-top: 30px;
        }
.checklist-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
.checklist-item:last-child,
        .checklist-item:nth-last-child(2):nth-child(odd) {
            border-bottom: none;
        }
.checklist-item i {
            color: var(--accent-leaf);
            font-size: 1.2rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
.checklist-item div h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 4px;
        }
.checklist-item div p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.5;
        }
.blog-section {
            background: var(--bg-primary);
        }
.blog-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }
.blog-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
        }
.blog-card:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
.blog-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
.blog-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
.blog-card-body .cat {
            font-size: 0.8rem;
            color: var(--accent-amber);
            font-weight: 600;
            margin-bottom: 8px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
.blog-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
            line-height: 1.4;
        }
.blog-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.5;
            flex: 1;
        }
.blog-card-body .date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
.faq-section {
            background: var(--bg-secondary);
        }
.faq-list {
            max-width: 800px;
            margin: 30px auto 0;
        }
.faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--border-subtle);
            overflow: hidden;
        }
.faq-question {
            padding: 20px 24px;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
        }
.faq-question i {
            transition: transform 0.3s;
            color: var(--accent-amber);
        }
.faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s;
        }
.faq-answer p {
            padding: 0 24px 20px;
            margin: 0;
            color: var(--text-secondary);
            line-height: 1.7;
        }
.faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
.faq-item.active .faq-answer {
            max-height: 300px;
        }
.cta-section {
            background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
            text-align: center;
            padding: 70px 0;
        }
.cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--text-primary);
        }
.cta-section p {
            color: var(--text-secondary);
            margin: 0 0 32px;
            font-size: 1.1rem;
        }
.btn-cta {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            padding: 14px 40px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            box-shadow: var(--shadow-amber);
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }
.btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
        }
.site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 30px;
        }
.footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
.footer-col h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-amber);
            margin: 0 0 16px;
        }
.footer-col a {
            display: block;
            color: var(--text-secondary);
            padding: 5px 0;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
.footer-col a:hover {
            color: var(--accent-amber);
        }
.footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
.btn-link {
            color: var(--accent-amber);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
.btn-link:hover {
            color: var(--accent-amber-light);
        }
.no-posts {
            text-align: center;
            color: var(--text-muted);
            padding: 40px;
            font-style: italic;
        }

@media (max-width: 1024px) {
            .hero-category .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .threat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .blog-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
@media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(3, 26, 18, 0.98);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 4px;
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-menu-trigger {
                display: block;
            }
            .header-actions {
                display: none;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .threat-grid {
                grid-template-columns: 1fr;
            }
            .checklist-container {
                grid-template-columns: 1fr;
            }
            .blog-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .security-metrics {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
@media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .hero-category {
                padding: 80px 0 50px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --bg-tertiary: #0A3B2B;
            --bg-card: #082E20;
            --bg-card-hover: #0D402F;
            --accent-amber: #F59E0B;
            --accent-amber-dark: #B45309;
            --accent-amber-light: #FCD34D;
            --accent-leaf: #10B981;
            --accent-leaf-dark: #047857;
            --text-primary: #F0FDF4;
            --text-secondary: #A7F3D0;
            --text-muted: #6B7280;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245, 158, 11, 0.15);
            --border-gold: rgba(245, 158, 11, 0.4);
            --shadow-amber: 0 4px 20px rgba(245, 158, 11, 0.15);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --shadow-card-hover: 0 12px 40px rgba(245,158,11,0.25);
            --font-primary: 'Segoe UI', 'Inter', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Times New Roman', serif;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --space-section: 80px;
            --space-container: 1200px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-primary);
            background-color: var(--bg-primary);
      , ft color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 72px;
        }
        .container {
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(3, 26, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--space-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo-link {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-amber);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo-link i {
            font-size: 1.6rem;
            color: var(--accent-amber);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a {
            padding: 10px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            background: var(--bg-tertiary);
            color: var(--accent-amber);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--accent-amber);
            color: var(--bg-primary);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            border: none;
            color: var(--bg-primary);
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-amber);
            transition: all 0.2s;
            white-space: nowrap;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.35);
        }
        .mobile-menu-trigger {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }
        /* Buttons */
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-amber), var(--accent-amber-dark));
            color: var(--bg-primary);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            transition: all 0.25s;
            box-shadow: var(--shadow-amber);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-gold);
            color: var(--accent-amber);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            transition: all 0.25s;
        }
        .btn-outline:hover {
            background: var(--accent-amber);
            color: var(--bg-primary);
        }
        /* Section Common */
        section {
            padding: 60px 0;
        }
        .section-label {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid var(--border-gold);
            border-radius: 50px;
            color: var(--accent-amber);
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .section-title {
            font-family: var(--font-display);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 40px;
            max-width: 700px;
        }
        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #0A3B2B 100%);
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-family: var(--font-display);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 20px;
        }
        .hero-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .hero-visual {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 24px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
        }
        .stat-badge {
            display: flex;
            gap: 24px;
            margin-top: 20px;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-amber);
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* Tabs */
        .tab-nav {
            display: flex;
            gap: 12px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .tab-btn {
            padding: 10px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            color: var(--text-secondary);
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
        }
        .tab-btn.active, .tab-btn:hover {
            background: var(--accent-amber);
            color: var(--bg-primary);
            border-color: var(--accent-amber);
        }
        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.3s;
            position: relative;
        }
        .strategy-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-gold);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .strategy-card .card-icon {
            width: 56px;
            height: 56px;
            background: rgba(245,158,11,0.12);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent-amber);
            margin-bottom: 20px;
        }
        .strategy-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .strategy-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .tip-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-amber);
            color: var(--bg-primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
        }
        /* Comparison Table */
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0 12px;
        }
        .compare-table th {
            text-align: left;
            padding: 16px 20px;
            color: var(--accent-amber);
            font-weight: 700;
            font-size: 0.95rem;
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
        }
        .compare-table td {
            padding: 14px 20px;
            background: var(--bg-card);
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
        }
        .compare-table tr td:first-child {
            font-weight: 600;
            color: var(--text-primary);
        }
        .highlight-row td {
            background: rgba(245,158,11,0.08);
            border-left: 3px solid var(--accent-amber);
        }
        /* Tips List */
        .tips-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .tips-list li {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--bg-card);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }
        .tips-list .tip-icon {
            width: 44px;
            height: 44px;
            background: rgba(16,185,129,0.15);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-leaf);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .tip-content h4 {
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .tip-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        /* News list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all 0.3s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .news-card img {
            height: 180px;
            object-fit: cover;
        }
        .news-card-body {
            padding: 20px;
        }
        .news-card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .news-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
            border-radius: var(--radius-xl);
            padding: 60px;
            text-align: center;
            border: 1px solid var(--border-gold);
            box-shadow: var(--shadow-amber);
        }
        .cta-section h2 {
            font-family: var(--font-display);
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.1rem;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            color: var(--accent-amber);
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            padding: 4px 0;
            font-size: 0.9rem;
        }
        .footer-col a:hover {
            color: var(--accent-amber);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .mobile-menu-trigger { display: block; }
            .section-title { font-size: 1.6rem; }
            .card-grid { grid-template-columns: 1fr; }
            .cta-section { padding: 32px; }
            .compare-table { font-size: 0.8rem; }
        }