/* roulang page: index */
:root {
            --color-primary: #1a56db;
            --color-primary-hover: #1e40af;
            --color-primary-light: #dbeafe;
            --color-accent: #f59e0b;
            --color-accent-hover: #d97706;
            --color-accent-light: #fef3c7;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-error: #ef4444;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
            --shadow-lg: 0 10px 25px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.1);
            --shadow-primary: 0 4px 16px rgba(26,86,219,0.25);
            --shadow-accent: 0 4px 16px rgba(245,158,11,0.25);
            --transition-fast: 150ms ease;
            --transition: 250ms ease;
            --transition-slow: 400ms ease;
            --font-sans: 'Inter', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
        }

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

        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

        a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; border: none; outline: none; }
        input { font-family: inherit; outline: none; }
        ul, ol { list-style: none; }

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

        /* Header & Navigation - SaaS Command Bar Style */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover { opacity: 0.85; }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .main-nav a:hover { color: var(--color-primary); background: var(--color-primary-light); }
        .main-nav a.active { color: var(--color-primary); background: var(--color-primary-light); font-weight: 600; }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-box input {
            width: 200px;
            padding: 10px 16px 10px 40px;
            border: 1.5px solid var(--color-border);
            border-radius: 50px;
            font-size: 0.875rem;
            background: var(--color-surface);
            color: var(--color-text);
            transition: all var(--transition-fast);
        }
        .search-box input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
            width: 240px;
        }
        .search-box .search-icon {
            position: absolute;
            left: 14px;
            color: var(--color-text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-primary);
        }
        .btn-primary:hover { background: var(--color-primary-hover); box-shadow: 0 6px 20px rgba(26,86,219,0.35); transform: translateY(-1px); }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-primary); }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }
        .btn-outline:hover { background: var(--color-primary-light); border-color: var(--color-primary-hover); }
        .btn-lg { padding: 14px 32px; font-size: 1rem; }
        .btn-accent { background: var(--color-accent); color: #1e293b; box-shadow: var(--shadow-accent); }
        .btn-accent:hover { background: var(--color-accent-hover); box-shadow: 0 6px 20px rgba(245,158,11,0.35); transform: translateY(-1px); }
        .mobile-menu-toggle { display: none; background: none; font-size: 1.5rem; color: var(--color-text); padding: 8px; border-radius: var(--radius-sm); }
        .mobile-menu-toggle:hover { background: var(--color-bg); }

        /* Hero Section */
        .hero {
            position: relative;
            padding: 80px 0 90px;
            background: linear-gradient(160deg, #0f172a 0%, #1e293b 40%, #1a3a6b 100%);
            overflow: hidden;
            color: #fff;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.28;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(transparent, var(--color-bg));
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .hero-content { max-width: 560px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.2);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero-badge .badge-dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; animation: pulse-dot 2s infinite; }
        @keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .hero h1 .highlight { color: var(--color-accent); }
        .hero p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 480px;
        }
        .hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 420px;
        }
        .hero-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            z-index: 2;
        }
        .hero-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: #fff; }
        .hero-stat-row { display: flex; gap: 20px; margin-top: 16px; }
        .hero-stat {
            text-align: center;
            background: rgba(255,255,255,0.08);
            padding: 14px 18px;
            border-radius: var(--radius);
        }
        .hero-stat .stat-num { font-size: 1.5rem; font-weight: 800; color: var(--color-accent); }
        .hero-stat .stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.6); margin-top: 4px; }
        .hero-card-shadow {
            position: absolute;
            top: 16px;
            left: 16px;
            right: -16px;
            bottom: -16px;
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: var(--radius-lg);
            z-index: 0;
            transform: rotate(-1deg);
        }

        /* Section Common */
        .section { padding: 70px 0; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
        }
        .section-header h2 { font-size: 2rem; font-weight: 800; letter-spacing: -0.01em; color: var(--color-text); margin-bottom: 12px; }
        .section-header p { color: var(--color-text-secondary); max-width: 600px; margin: 0 auto; font-size: 1rem; }

        /* Features Grid */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-slow);
        }
        .feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
        .feature-card:hover::before { transform: scaleX(1); }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 20px;
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
        .feature-card p { color: var(--color-text-secondary); font-size: 0.9rem; line-height: 1.6; }

        /* Category Cards */
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .category-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            display: block;
            color: inherit;
        }
        .category-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
        .category-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .category-card-img img { transform: scale(1.05); }
        .category-card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(transparent 50%, rgba(0,0,0,0.5));
        }
        .category-card-body { padding: 20px 22px; }
        .category-card-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .category-card-body p { color: var(--color-text-secondary); font-size: 0.85rem; line-height: 1.5; }
        .category-card-body .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 50px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        /* Latest Posts / CMS List */
        .posts-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .post-item {
            display: flex;
            gap: 18px;
            background: var(--color-surface);
            border-radius: var(--radius);
            padding: 18px 20px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }
        .post-item:hover { box-shadow: var(--shadow-md); border-color: transparent; }
        .post-item-img {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .post-item-img img { width: 100%; height: 100%; object-fit: cover; }
        .post-item-info { flex: 1; min-width: 0; }
        .post-item-info .post-date { font-size: 0.78rem; color: var(--color-text-muted); margin-bottom: 4px; }
        .post-item-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item-info h4 a { color: var(--color-text); }
        .post-item-info h4 a:hover { color: var(--color-primary); }
        .post-item-info .post-excerpt {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item-info .post-category {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 50px;
            background: var(--color-accent-light);
            color: var(--color-accent-hover);
            margin-bottom: 6px;
        }
        .posts-empty { text-align: center; padding: 40px; color: var(--color-text-muted); font-size: 1rem; background: var(--color-surface); border-radius: var(--radius); border: 2px dashed var(--color-border); }

        /* Stats Section */
        .stats-bg { background: var(--color-primary); color: #fff; padding: 60px 0; position: relative; overflow: hidden; }
        .stats-bg::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.1; }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; position: relative; z-index: 1; text-align: center; }
        .stat-item .stat-value { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.02em; }
        .stat-item .stat-desc { font-size: 0.9rem; opacity: 0.85; margin-top: 6px; }

        /* Process / Steps */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .step-card {
            text-align: center;
            padding: 30px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-card h4 { font-weight: 700; margin-bottom: 8px; font-size: 1rem; }
        .step-card p { font-size: 0.85rem; color: var(--color-text-secondary); }

        /* FAQ */
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--color-surface); border: 1px solid var(--color-border-light); border-radius: var(--radius); overflow: hidden; transition: all var(--transition-fast); }
        .faq-item:hover { border-color: var(--color-primary); }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            background: none;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .faq-question .faq-icon { color: var(--color-primary); font-size: 0.8rem; transition: transform var(--transition-fast); }
        .faq-item.open .faq-question .faq-icon { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 20px; font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            border-radius: var(--radius-xl);
            padding: 60px 50px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin: 40px 0 60px;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.2; }
        .cta-section > * { position: relative; z-index: 1; }
        .cta-section h2 { font-size: 2rem; font-weight: 800; margin-bottom: 14px; }
        .cta-section p { color: rgba(255,255,255,0.8); margin-bottom: 28px; font-size: 1rem; max-width: 500px; margin-left: auto; margin-right: auto; }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 50px 0 30px;
            font-size: 0.88rem;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
        .footer-col h4 { color: #fff; font-weight: 700; margin-bottom: 16px; font-size: 0.95rem; }
        .footer-col p { line-height: 1.7; }
        .footer-col a { display: block; padding: 4px 0; color: rgba(255,255,255,0.6); transition: color var(--transition-fast); }
        .footer-col a:hover { color: #fff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.45); }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner { grid-template-columns: 1fr; gap: 36px; }
            .hero-content { max-width: 100%; text-align: center; margin: 0 auto; }
            .hero p { max-width: 100%; margin-left: auto; margin-right: auto; }
            .hero-buttons { justify-content: center; }
            .hero-visual { display: none; }
            .hero h1 { font-size: 2.2rem; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .posts-list { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .site-header { height: auto; min-height: var(--nav-height); }
            .header-inner { flex-wrap: wrap; padding: 10px 0; }
            .main-nav { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--color-surface); flex-direction: column; padding: 12px; gap: 2px; border-bottom: 2px solid var(--color-border); box-shadow: var(--shadow-lg); }
            .main-nav.open { display: flex; }
            .main-nav a { padding: 12px 16px; border-radius: var(--radius-sm); }
            .header-actions { gap: 6px; }
            .search-box input { width: 140px; }
            .search-box input:focus { width: 160px; }
            .mobile-menu-toggle { display: block; }
            .hero { padding: 50px 0 60px; }
            .hero h1 { font-size: 1.75rem; }
            .hero p { font-size: 0.95rem; }
            .section { padding: 44px 0; }
            .section-header h2 { font-size: 1.5rem; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
            .steps-grid { grid-template-columns: 1fr; }
            .cta-section { padding: 36px 24px; margin: 24px 0 40px; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .post-item { flex-direction: column; }
            .post-item-img { width: 100%; height: 150px; }
        }

        @media (max-width: 520px) {
            .hero h1 { font-size: 1.45rem; }
            .hero-buttons { flex-direction: column; align-items: center; }
            .hero-buttons .btn { width: 100%; justify-content: center; }
            .search-box input { width: 110px; font-size: 0.8rem; }
            .search-box input:focus { width: 120px; }
            .btn { padding: 8px 16px; font-size: 0.82rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-item .stat-value { font-size: 1.8rem; }
            .posts-list { grid-template-columns: 1fr; }
        }

/* roulang page: article */
:root {
            --primary: #1a56db;
            --primary-dark: #1447b3;
            --primary-light: #e8effc;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-on-dark: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
        }

        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
        body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}
        img{max-width:100%;height:auto;display:block}
        a{text-decoration:none;color:inherit;transition:color var(--transition)}
        button,input,textarea{font-family:inherit;font-size:inherit}
        ul,ol{list-style:none}

        .container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
        @media(max-width:768px){.container{padding:0 16px}}

        /* ========== HEADER / NAV ========== */
        .site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);transition:box-shadow var(--transition)}
        .site-header.scrolled{box-shadow:var(--shadow-sm)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);gap:20px}
        .logo-link{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:var(--text);letter-spacing:-0.01em;flex-shrink:0}
        .logo-icon{width:38px;height:38px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--primary),#3b82f6);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:1.1rem;flex-shrink:0}
        .main-nav{display:flex;align-items:center;gap:4px;flex-shrink:0}
        .main-nav a{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--radius-sm);font-size:0.925rem;font-weight:500;color:var(--text-secondary);transition:all var(--transition);white-space:nowrap;position:relative}
        .main-nav a:hover{color:var(--primary);background:var(--primary-light)}
        .main-nav a.active{color:var(--primary);background:var(--primary-light);font-weight:600}
        .header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
        .search-trigger{width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:var(--bg-white);display:flex;align-items:center;just-content:center;cursor:pointer;color:var(--text-secondary);transition:all var(--transition);font-size:1rem}
        .search-trigger:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow-xs)}
        .btn-nav-cta{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:0.9rem;background:var(--primary);color:#fff;border:none;cursor:pointer;transition:all var(--transition);white-space:nowrap}
        .btn-nav-cta:hover{background:var(--primary-dark);box-shadow:var(--shadow);transform:translateY(-1px)}
        .mobile-menu-btn{display:none;width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-white);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;z-index:101}
        .mobile-menu-btn span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:all var(--transition)}
        .mobile-menu-btn.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
        .mobile-menu-btn.open span:nth-child(2){opacity:0}
        .mobile-menu-btn.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

        @media(max-width:1024px){
            .main-nav{gap:2px}
            .main-nav a{padding:6px 12px;font-size:0.875rem}
            .btn-nav-cta{padding:7px 14px;font-size:0.85rem}
        }
        @media(max-width:768px){
            .mobile-menu-btn{display:flex}
            .main-nav{position:fixed;top:var(--nav-height);left:0;right:0;background:var(--bg-white);flex-direction:column;padding:16px;gap:2px;border-bottom:2px solid var(--border);box-shadow:var(--shadow-lg);transform:translateY(-120%);opacity:0;pointer-events:none;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);z-index:99}
            .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
            .main-nav a{width:100%;padding:12px 16px;border-radius:var(--radius);font-size:1rem;justify-content:flex-start}
            .header-actions .btn-nav-cta{display:none}
            .header-actions .btn-nav-cta.mobile-visible{display:inline-flex}
        }

        /* ========== PAGE BANNER ========== */
        .page-banner{position:relative;padding:60px 0;background:linear-gradient(135deg,var(--bg-dark) 0%,#1e3a5f 50%,#0f172a 100%);overflow:hidden;text-align:center}
        .page-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.25;z-index:0}
        .page-banner .container{position:relative;z-index:1}
        .breadcrumb{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:20px;flex-wrap:wrap;font-size:0.875rem;color:var(--text-light)}
        .breadcrumb a{color:var(--text-on-dark);opacity:0.75;transition:opacity var(--transition)}
        .breadcrumb a:hover{opacity:1;color:var(--accent)}
        .breadcrumb .sep{opacity:0.5;font-size:0.7rem}
        .breadcrumb .current{color:var(--accent);font-weight:500;opacity:1}
        .page-banner-title{font-size:2.2rem;font-weight:800;color:#fff;letter-spacing:-0.02em;margin-bottom:8px;line-height:1.25}
        .page-banner-meta{display:flex;align-items:center;justify-content:center;gap:20px;color:rgba(255,255,255,0.75);font-size:0.9rem;flex-wrap:wrap}
        .page-banner-meta .meta-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.12);padding:5px 14px;border-radius:20px;font-weight:500;color:var(--accent);backdrop-filter:blur(4px)}

        @media(max-width:768px){
            .page-banner{padding:40px 0}
            .page-banner-title{font-size:1.5rem}
            .page-banner-meta{gap:12px;font-size:0.8rem}
        }

        /* ========== ARTICLE CONTENT SECTION ========== */
        .article-section{padding:56px 0}
        .article-layout{display:grid;grid-template-columns:1fr 300px;gap:48px;align-items:start}
        .article-main{min-width:0}
        .article-sidebar{position:sticky;top:calc(var(--nav-height) + 24px)}

        .article-featured-image{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);margin-bottom:32px}
        .article-featured-image img{width:100%;aspect-ratio:16/9;object-fit:cover}
        .article-body{background:var(--bg-white);border-radius:var(--radius-lg);padding:40px 44px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}
        .article-body h2{font-size:1.5rem;font-weight:700;color:var(--text);margin:32px 0 14px;line-height:1.35}
        .article-body h2:first-child{margin-top:0}
        .article-body h3{font-size:1.2rem;font-weight:600;color:var(--text);margin:24px 0 10px}
        .article-body p{margin-bottom:16px;color:var(--text);line-height:1.85;font-size:1.02rem}
        .article-body p:last-child{margin-bottom:0}
        .article-body ul,.article-body ol{margin:12px 0 20px;padding-left:24px}
        .article-body li{margin-bottom:8px;line-height:1.75}
        .article-body ul li{list-style:disc}
        .article-body ol li{list-style:decimal}
        .article-body blockquote{margin:24px 0;padding:20px 24px;border-left:4px solid var(--primary);background:var(--primary-light);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text);font-style:italic}
        .article-body img{border-radius:var(--radius);margin:20px 0;width:100%}
        .article-body a{color:var(--primary);font-weight:500;text-decoration:underline;text-underline-offset:3px}
        .article-body a:hover{color:var(--primary-dark)}
        .article-body strong{font-weight:700;color:var(--text)}
        .article-body code{background:var(--bg);padding:2px 8px;border-radius:4px;font-size:0.9em;color:var(--primary-dark)}
        .article-body pre{background:var(--bg-dark);color:#e2e8f0;padding:20px 24px;border-radius:var(--radius);overflow-x:auto;margin:20px 0;font-size:0.9rem;line-height:1.6}

        .article-not-found{text-align:center;padding:80px 40px;background:var(--bg-white);border-radius:var(--radius-lg);border:1px solid var(--border)}
        .article-not-found .icon{font-size:4rem;margin-bottom:20px;opacity:0.6}
        .article-not-found h2{font-size:1.6rem;margin-bottom:12px;color:var(--text)}
        .article-not-found p{color:var(--text-secondary);margin-bottom:24px}
        .btn-back{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:var(--primary);color:#fff;border-radius:var(--radius);font-weight:600;transition:all var(--transition);border:none;cursor:pointer}
        .btn-back:hover{background:var(--primary-dark);box-shadow:var(--shadow);transform:translateY(-1px)}

        /* ========== SIDEBAR ========== */
        .sidebar-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);margin-bottom:24px}
        .sidebar-card h4{font-size:1.05rem;font-weight:700;margin-bottom:16px;color:var(--text);display:flex;align-items:center;gap:8px}
        .sidebar-card h4::before{content:'';width:4px;height:18px;background:var(--primary);border-radius:2px;flex-shrink:0}
        .sidebar-post-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border-light);transition:all var(--transition)}
        .sidebar-post-item:last-child{border-bottom:none;padding-bottom:0}
        .sidebar-post-item:hover .sidebar-post-title{color:var(--primary)}
        .sidebar-post-thumb{width:64px;height:48px;border-radius:var(--radius-sm);object-fit:cover;flex-shrink:0;background:var(--bg)}
        .sidebar-post-info{flex:1;min-width:0}
        .sidebar-post-title{font-size:0.875rem;font-weight:600;color:var(--text);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--transition)}
        .sidebar-post-date{font-size:0.78rem;color:var(--text-light);margin-top:4px}
        .sidebar-tags{display:flex;flex-wrap:wrap;gap:8px}
        .sidebar-tag{display:inline-block;padding:5px 12px;background:var(--bg);border-radius:20px;font-size:0.8rem;color:var(--text-secondary);transition:all var(--transition);border:1px solid transparent}
        .sidebar-tag:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}

        @media(max-width:1024px){
            .article-layout{grid-template-columns:1fr 260px;gap:32px}
        }
        @media(max-width:768px){
            .article-layout{grid-template-columns:1fr}
            .article-sidebar{position:static}
            .article-body{padding:24px 20px}
            .article-section{padding:36px 0}
        }

        /* ========== RELATED POSTS ========== */
        .related-section{padding:56px 0;background:var(--bg-white);border-top:1px solid var(--border)}
        .section-label{display:inline-flex;align-items:center;gap:8px;font-size:0.85rem;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:0.04em;margin-bottom:12px}
        .section-title{font-size:2rem;font-weight:800;color:var(--text);letter-spacing:-0.02em;margin-bottom:8px}
        .section-subtitle{color:var(--text-secondary);font-size:1.05rem;margin-bottom:36px}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .related-card{background:var(--bg);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-light);transition:all var(--transition);cursor:pointer}
        .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border)}
        .related-card-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-dark)}
        .related-card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
        .related-card:hover .related-card-img img{transform:scale(1.04)}
        .related-card-body{padding:20px}
        .related-card-tag{font-size:0.78rem;color:var(--primary);font-weight:600;margin-bottom:6px}
        .related-card-title{font-size:1.05rem;font-weight:700;color:var(--text);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px;transition:color var(--transition)}
        .related-card:hover .related-card-title{color:var(--primary)}
        .related-card-date{font-size:0.8rem;color:var(--text-light)}

        @media(max-width:768px){
            .related-grid{grid-template-columns:1fr}
            .section-title{font-size:1.5rem}
            .related-section{padding:36px 0}
        }

        /* ========== CTA SECTION ========== */
        .cta-section{padding:64px 0}
        .cta-card{background:linear-gradient(135deg,var(--bg-dark) 0%,#1e3a5f 60%,#0f172a 100%);border-radius:var(--radius-xl);padding:56px 48px;text-align:center;position:relative;overflow:hidden;box-shadow:var(--shadow-xl)}
        .cta-card::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.15;z-index:0}
        .cta-card>*{position:relative;z-index:1}
        .cta-card h3{font-size:2rem;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:-0.02em}
        .cta-card p{color:rgba(255,255,255,0.8);font-size:1.1rem;margin-bottom:28px;max-width:520px;margin-left:auto;margin-right:auto}
        .cta-card .btn-cta{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:var(--accent);color:#0f172a;font-weight:700;font-size:1rem;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition);letter-spacing:0.01em}
        .cta-card .btn-cta:hover{background:#fbbf24;box-shadow:0 8px 24px rgba(245,158,11,0.35);transform:translateY(-2px)}

        @media(max-width:768px){
            .cta-card{padding:36px 24px}
            .cta-card h3{font-size:1.5rem}
            .cta-card p{font-size:0.95rem}
        }

        /* ========== FOOTER ========== */
        .site-footer{background:var(--bg-dark);color:var(--text-on-dark);padding:56px 0 0;margin-top:0}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.1)}
        .footer-col h4{font-size:1.05rem;font-weight:700;margin-bottom:16px;color:#fff}
        .footer-col p{font-size:0.9rem;color:rgba(255,255,255,0.65);line-height:1.7}
        .footer-col a{display:block;font-size:0.9rem;color:rgba(255,255,255,0.6);padding:5px 0;transition:color var(--transition)}
        .footer-col a:hover{color:var(--accent)}
        .footer-bottom{text-align:center;padding:20px 0;font-size:0.85rem;color:rgba(255,255,255,0.45)}

        @media(max-width:768px){
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
            .footer-col:first-child{grid-column:1/-1}
        }
        @media(max-width:520px){
            .footer-grid{grid-template-columns:1fr;gap:24px}
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a56db;
            --color-primary-hover: #1648b8;
            --color-primary-light: #e8f0fe;
            --color-accent: #f59e0b;
            --color-accent-hover: #d97706;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-success-light: #d1fae5;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --container-max: 1200px;
            --container-narrow: 900px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 72px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .container--narrow {
            max-width: var(--container-narrow);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

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

        .header-logo {
            flex-shrink: 0;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .header-logo:hover {
            opacity: 0.82;
        }

        .header-logo .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            list-style: none;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .header-search input {
            width: 200px;
            padding: 9px 14px 9px 36px;
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            background: var(--color-bg);
            color: var(--color-text);
            transition: all var(--transition-fast);
        }

        .header-search input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08);
            width: 240px;
            background: var(--color-surface);
        }

        .header-search .search-icon {
            position: absolute;
            left: 13px;
            pointer-events: none;
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            padding: 10px 22px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(26, 86, 219, 0.2);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-hover);
            color: var(--color-primary-hover);
        }

        .btn-lg {
            padding: 13px 30px;
            font-size: 1rem;
            border-radius: var(--radius-full);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #1e293b;
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
            transform: translateY(-1px);
        }

        .btn-accent:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 6px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center 35%;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(30, 41, 59, 0.82) 0%,
                    rgba(30, 41, 59, 0.72) 60%,
                    rgba(30, 41, 59, 0.88) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

        .banner-breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .banner-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }

        .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.6;
        }

        .banner-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
            flex-wrap: wrap;
        }

        .banner-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }

        .banner-meta .meta-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-accent);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section--alt {
            background: var(--color-surface);
        }

        .section--dark {
            background: #1e293b;
            color: #fff;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 5px 14px;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing-sm);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin-bottom: var(--spacing-xs);
            line-height: 1.3;
        }

        .section--dark .section-title {
            color: #fff;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section--dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== OVERVIEW CARDS ========== */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .overview-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .overview-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 4px;
            border-radius: 0 0 4px 4px;
            background: var(--color-primary);
            opacity: 0;
            transition: all var(--transition-base);
        }

        .overview-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-primary);
        }

        .overview-card:hover::before {
            opacity: 1;
            width: 80px;
        }

        .overview-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.6rem;
            color: var(--color-primary);
            transition: transform var(--transition-base);
        }

        .overview-card:hover .card-icon {
            transform: scale(1.08);
        }

        .overview-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .overview-card p {
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== STEP GUIDE ========== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            max-width: 760px;
            margin: 0 auto;
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-md);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md) var(--spacing-lg);
            transition: all var(--transition-base);
        }

        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateX(4px);
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.15rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.25);
        }

        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--color-text);
        }

        .step-content p {
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .step-content .step-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--color-success-light);
            color: var(--color-success);
            margin-top: 6px;
        }

        /* ========== FEATURE GRID ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .feature-card {
            display: flex;
            gap: var(--spacing-md);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: all var(--transition-base);
            align-items: flex-start;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .feature-card-img {
            flex-shrink: 0;
            width: 120px;
            height: 90px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-border-light);
        }

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

        .feature-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--color-text);
        }

        .feature-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        .feature-card-body .feature-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 9px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
            color: var(--color-primary);
            margin-top: 6px;
        }

        /* ========== SAFETY SECTION ========== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .safety-card {
            text-align: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-sm);
            transition: all var(--transition-base);
        }

        .safety-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-3px);
        }

        .safety-icon {
            font-size: 2.4rem;
            margin-bottom: var(--spacing-sm);
        }

        .safety-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: #fff;
        }

        .safety-card p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-md);
            background: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-base);
            color: var(--color-text-secondary);
        }

        .faq-item.open .faq-arrow {
            background: var(--color-primary-light);
            color: var(--color-primary);
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 var(--spacing-md);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        .faq-answer p {
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, #1a56db 0%, #1e40af 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-sm);
        }

        .cta-inner p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }

        .cta-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-white {
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            box-shadow: var(--shadow-md);
        }

        .btn-white:hover {
            background: #f1f5f9;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .btn-white-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }

        .btn-white-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

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

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.01em;
        }

        .footer-col p {
            font-size: 0.875rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col a {
            display: block;
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: all var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.825rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .overview-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .header-search input {
                width: 150px;
            }
            .header-search input:focus {
                width: 180px;
            }
            .banner-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }
            .header-logo {
                font-size: 1.2rem;
            }
            .main-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                gap: 4px;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .main-nav::-webkit-scrollbar {
                display: none;
            }
            .main-nav a {
                font-size: 0.8rem;
                padding: 7px 12px;
            }
            .header-actions {
                order: 2;
                margin-left: auto;
            }
            .header-search input {
                width: 120px;
                font-size: 0.8rem;
                padding: 8px 10px 8px 30px;
            }
            .header-search input:focus {
                width: 150px;
            }
            .btn {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .overview-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .safety-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .banner-title {
                font-size: 1.8rem;
            }
            .banner-subtitle {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .feature-card {
                flex-direction: column;
            }
            .feature-card-img {
                width: 100%;
                height: 160px;
            }
            .page-banner {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
            }
            .step-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .step-item:hover {
                transform: none;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 6px;
            }
            .header-logo {
                font-size: 1.1rem;
            }
            .header-search input {
                width: 100px;
                padding: 7px 8px 7px 26px;
                font-size: 0.75rem;
            }
            .header-search input:focus {
                width: 120px;
            }
            .header-search .search-icon {
                left: 9px;
                font-size: 0.75rem;
            }
            .btn {
                padding: 7px 13px;
                font-size: 0.75rem;
                border-radius: var(--radius-full);
            }
            .main-nav a {
                font-size: 0.75rem;
                padding: 6px 10px;
            }
            .banner-title {
                font-size: 1.5rem;
            }
            .banner-subtitle {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-inner h2 {
                font-size: 1.5rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .page-banner {
                padding: var(--spacing-lg) 0;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0f1729;
            --primary-light: #1a2744;
            --accent: #c8a45c;
            --accent-hover: #d4b368;
            --accent-soft: #f5ecd7;
            --bg: #f7f8fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1729;
            --text: #1a1a2e;
            --text-secondary: #5a6170;
            --text-muted: #8b919e;
            --text-light: #aeb5c0;
            --border: #e5e7ec;
            --border-light: #f0f1f5;
            --shadow-sm: 0 1px 3px rgba(15, 23, 41, 0.06);
            --shadow: 0 4px 16px rgba(15, 23, 41, 0.08);
            --shadow-md: 0 8px 30px rgba(15, 23, 41, 0.10);
            --shadow-lg: 0 16px 48px rgba(15, 23, 41, 0.12);
            --shadow-xl: 0 24px 64px rgba(15, 23, 41, 0.16);
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --container-narrow: 960px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition);
        }

        .logo-link:hover {
            opacity: 0.82;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }

        .main-nav a:hover {
            color: var(--primary);
            background: rgba(15, 23, 41, 0.04);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(15, 23, 41, 0.06);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 9px 16px;
            transition: all var(--transition);
            min-width: 200px;
        }

        .search-box:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(200, 164, 92, 0.10);
            background: var(--bg-white);
        }

        .search-box i {
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .search-box input {
            flex: 1;
            font-size: 0.9rem;
            color: var(--text);
            background: transparent;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: var(--text-light);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--accent);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(200, 164, 92, 0.25);
        }

        .btn-nav-cta:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 16px rgba(200, 164, 92, 0.35);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-xs);
            font-size: 1.3rem;
            color: var(--text);
            flex-shrink: 0;
            transition: background var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(15, 23, 41, 0.06);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding: 14px 0;
            font-size: 0.88rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-bar .sep {
            color: var(--text-light);
            font-size: 0.7rem;
        }

        .breadcrumb-bar .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            padding: 60px 0 56px;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 41, 0.88) 0%, rgba(15, 23, 41, 0.72) 40%, rgba(26, 39, 68, 0.65) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .banner-content {
            max-width: 680px;
        }

        .banner-label {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-xl);
            background: rgba(200, 164, 92, 0.2);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            border: 1px solid rgba(200, 164, 92, 0.3);
        }

        .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .banner-content .banner-desc {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.65;
            max-width: 520px;
            margin-bottom: 20px;
        }

        .banner-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .banner-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .banner-stat .stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: -0.01em;
        }

        .banner-stat .stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.65);
        }

        /* ========== MAIN CONTENT ========== */
        .page-main {
            flex: 1;
            padding: 36px 0 60px;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .section-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-header .section-sub {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .section-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
            white-space: nowrap;
        }

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

        .section-link i {
            font-size: 0.7rem;
            transition: transform var(--transition);
        }

        .section-link:hover i {
            transform: translateX(3px);
        }

        /* ========== FEATURED CARDS ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 44px;
        }

        .featured-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
            position: relative;
        }

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

        .featured-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .featured-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .featured-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .featured-card .rank-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-xs);
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 8px rgba(200, 164, 92, 0.35);
            z-index: 2;
        }

        .featured-card .card-category-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 4px 12px;
            border-radius: var(--radius-xl);
            background: rgba(15, 23, 41, 0.78);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 500;
            z-index: 2;
            backdrop-filter: blur(6px);
        }

        .featured-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card .card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.55;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .featured-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .featured-card .card-meta i {
            font-size: 0.7rem;
        }

        /* ========== ARTICLE LIST ========== */
        .article-list-section {
            margin-bottom: 44px;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .article-item {
            display: flex;
            gap: 18px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 16px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            align-items: center;
        }

        .article-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--border);
            transform: translateY(-2px);
        }

        .article-item .article-thumb {
            width: 120px;
            height: 80px;
            border-radius: var(--radius-xs);
            overflow: hidden;
            flex-shrink: 0;
        }

        .article-item .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-item:hover .article-thumb img {
            transform: scale(1.06);
        }

        .article-item .article-info {
            flex: 1;
            min-width: 0;
        }

        .article-item .article-info h3 {
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 5px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .article-item:hover .article-info h3 {
            color: var(--accent);
        }

        .article-item .article-info .article-excerpt {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .article-item .article-meta-row {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .article-item .tag-pill {
            display: inline-block;
            padding: 2px 10px;
            border-radius: var(--radius-xl);
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 0.74rem;
            font-weight: 500;
            white-space: nowrap;
        }

        /* ========== TOPICS CLOUD ========== */
        .topics-section {
            margin-bottom: 44px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .topics-section h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .topics-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .topic-tag {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-xl);
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-secondary);
            border: 1.5px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .topic-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-soft);
        }

        .topic-tag.hot {
            background: var(--accent-soft);
            border-color: var(--accent);
            color: var(--accent);
            font-weight: 600;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            margin-bottom: 44px;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-md);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 41, 0.9) 0%, rgba(15, 23, 41, 0.78) 100%);
            z-index: 1;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 560px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 20px;
            border-radius: var(--radius-xl);
            background: rgba(255, 255, 255, 0.12);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 3px rgba(200, 164, 92, 0.15);
        }

        .btn-cta-submit {
            padding: 13px 28px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.95rem;
            background: var(--accent);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(200, 164, 92, 0.35);
        }

        .btn-cta-submit:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 22px rgba(200, 164, 92, 0.45);
            transform: translateY(-2px);
        }

        /* ========== FAQ ========== */
        .faq-section {
            margin-bottom: 20px;
        }

        .faq-grid {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            text-align: left;
            transition: all var(--transition);
            cursor: pointer;
            background: transparent;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question i {
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            padding: 5px 0;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .search-box {
                min-width: 150px;
            }

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

            .page-banner {
                padding: 44px 0 40px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                gap: 12px;
            }

            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-slow);
                z-index: 999;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-xs);
                font-size: 0.95rem;
            }

            .mobile-toggle {
                display: flex;
            }

            .search-box {
                min-width: auto;
                flex: 1;
                max-width: 180px;
            }

            .btn-nav-cta {
                padding: 9px 16px;
                font-size: 0.82rem;
            }

            .featured-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .article-item {
                flex-direction: column;
                gap: 12px;
                padding: 14px;
            }

            .article-item .article-thumb {
                width: 100%;
                height: 160px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .banner-stats {
                gap: 16px;
            }

            .banner-stat .stat-num {
                font-size: 1.3rem;
            }

            .page-banner {
                padding: 32px 0 30px;
                border-radius: 0 0 var(--radius) var(--radius);
            }

            .cta-section {
                padding: 32px 20px;
            }

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

            .topics-section {
                padding: 20px;
            }
        }

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

            .logo-link {
                font-size: 1.05rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }

            .search-box {
                display: none;
            }

            .btn-nav-cta {
                font-size: 0.78rem;
                padding: 8px 14px;
            }

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

            .banner-content .banner-desc {
                font-size: 0.95rem;
            }

            .banner-stats {
                gap: 12px;
            }

            .page-banner {
                padding: 24px 0 22px;
            }

            .cta-form {
                flex-direction: column;
                gap: 10px;
            }

            .cta-form input {
                min-width: auto;
                width: 100%;
            }

            .btn-cta-submit {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }

            .faq-answer-inner {
                padding: 0 16px 16px;
                font-size: 0.86rem;
            }

            .topics-cloud {
                gap: 8px;
            }

            .topic-tag {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0f1f3a;
            --color-primary-light: #1a3055;
            --color-accent: #c8a45c;
            --color-accent-light: #d4b36a;
            --color-accent-pale: #f7efe0;
            --color-bg: #f7f8fa;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-soft: #5a6070;
            --color-text-muted: #8b919e;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f4;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 32px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 64px;
            --section-gap: 72px;
            --card-gap: 24px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        /* Header & Navigation - SaaS Command Bar Style */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }

        .logo-link:hover {
            opacity: 0.82;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(15, 31, 58, 0.04);
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(15, 31, 58, 0.06);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 10px;
            padding: 8px 14px;
            transition: all var(--transition-fast);
            min-width: 200px;
        }

        .header-search:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 164, 92, 0.1);
            background: var(--color-surface);
        }

        .header-search svg {
            width: 16px;
            height: 16px;
            color: var(--color-text-muted);
            flex-shrink: 0;
        }

        .header-search input {
            border: none;
            background: transparent;
            font-size: 0.88rem;
            color: var(--color-text);
            width: 100%;
            min-width: 100px;
        }

        .header-search input::placeholder {
            color: var(--color-text-muted);
        }

        .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 10px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
        }

        .btn-primary-sm:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-primary-sm:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Category Hero */
        .category-hero {
            background: linear-gradient(170deg, var(--color-primary) 0%, #162b4a 40%, #1a3355 100%);
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(200, 164, 92, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .category-hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast);
        }

        .category-hero-breadcrumb a:hover {
            color: #fff;
        }

        .category-hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .category-hero-breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }

        .category-hero-content {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-hero-text {
            flex: 1;
            min-width: 280px;
        }

        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(200, 164, 92, 0.18);
            color: var(--color-accent);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            border: 1px solid rgba(200, 164, 92, 0.25);
        }

        .category-hero-text h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 14px;
        }

        .category-hero-text h1 .accent {
            color: var(--color-accent);
        }

        .category-hero-text .hero-desc {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            max-width: 540px;
        }

        .category-hero-stats {
            display: flex;
            gap: 32px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            min-width: 110px;
            backdrop-filter: blur(4px);
        }

        .hero-stat-item .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }

        .hero-stat-item .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }

        /* Subcategory Filter Bar */
        .filter-bar {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 0;
            position: sticky;
            top: var(--header-height);
            z-index: 50;
        }

        .filter-bar-inner {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 12px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .filter-bar-inner::-webkit-scrollbar {
            display: none;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text-soft);
            background: transparent;
            border: 1px solid transparent;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .filter-tag:hover {
            color: var(--color-primary);
            background: rgba(15, 31, 58, 0.04);
        }

        .filter-tag.active {
            color: var(--color-primary);
            background: rgba(15, 31, 58, 0.07);
            border-color: rgba(15, 31, 58, 0.15);
            font-weight: 600;
        }

        /* Main Content Area */
        .category-main {
            padding: 48px 0 64px;
            flex: 1;
        }

        .category-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
            align-items: start;
        }

        /* Article Cards Grid */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

        .article-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #eef1f5;
        }

        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-card:hover .article-card-img img {
            transform: scale(1.04);
        }

        .article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            z-index: 2;
        }

        .article-card-badge.featured {
            background: var(--color-primary);
        }

        .article-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        .article-card-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-border);
            flex-shrink: 0;
        }

        .article-card-title {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--color-primary);
        }

        .article-card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }

        .article-card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .article-tag {
            font-size: 0.75rem;
            padding: 3px 10px;
            border-radius: 12px;
            background: rgba(15, 31, 58, 0.05);
            color: var(--color-text-soft);
            font-weight: 500;
            white-space: nowrap;
        }

        .article-card-read {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            display: flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
            transition: gap var(--transition-fast);
        }

        .article-card:hover .article-card-read {
            gap: 8px;
        }

        .article-card-read svg {
            width: 14px;
            height: 14px;
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 60px);
        }

        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            padding: 24px;
        }

        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-border-light);
            position: relative;
        }

        .sidebar-card h4::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .sidebar-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            line-height: 1.4;
        }

        .sidebar-list li a:hover {
            background: rgba(15, 31, 58, 0.04);
            color: var(--color-primary);
        }

        .sidebar-list .list-num {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(15, 31, 58, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--color-text-soft);
            flex-shrink: 0;
        }

        .sidebar-list li:nth-child(1) .list-num,
        .sidebar-list li:nth-child(2) .list-num,
        .sidebar-list li:nth-child(3) .list-num {
            background: var(--color-accent-pale);
            color: var(--color-accent);
        }

        /* Sidebar CTA Card */
        .sidebar-cta-card {
            background: linear-gradient(145deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            color: #fff;
            text-align: center;
            border: none;
        }

        .sidebar-cta-card .cta-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
        }

        .sidebar-cta-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .sidebar-cta-card p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
            line-height: 1.5;
        }

        .btn-sidebar-cta {
            display: inline-block;
            width: 100%;
            padding: 12px 20px;
            border-radius: 10px;
            font-size: 0.92rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
            text-align: center;
        }

        .btn-sidebar-cta:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow-md);
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .pagination .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-pale);
        }

        .pagination .page-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 700;
        }

        .pagination .page-btn.arrow {
            font-size: 1rem;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
            padding: 60px 0;
        }

        .cta-block {
            background: linear-gradient(150deg, var(--color-primary) 0%, #162d50 50%, var(--color-primary-light) 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(200, 164, 92, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-block>* {
            position: relative;
            z-index: 1;
        }

        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }

        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 500px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
        }

        .btn-cta-lg:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow-xl);
            transform: translateY(-2px);
        }

        .btn-cta-lg:active {
            transform: translateY(0);
        }

        /* FAQ Section */
        .faq-section {
            padding: 60px 0;
            background: var(--color-bg);
        }

        .faq-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-section .section-header h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .faq-section .section-header p {
            font-size: 0.95rem;
            color: var(--color-text-soft);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition-fast);
            border: none;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(15, 31, 58, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            font-size: 0.8rem;
            color: var(--color-text-soft);
            font-weight: 700;
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .sidebar-cta-card {
                grid-column: 1 / -1;
            }

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .category-hero-stats {
                gap: 16px;
            }

            .hero-stat-item {
                padding: 18px 20px;
                min-width: 90px;
            }

            .hero-stat-item .stat-num {
                font-size: 1.8rem;
            }

            .category-hero-text h1 {
                font-size: 2rem;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: 16px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }

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

            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }

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

            .header-search {
                display: none;
            }

            .header-actions .btn-primary-sm {
                padding: 8px 14px;
                font-size: 0.82rem;
            }

            .category-hero {
                padding: 40px 0 44px;
            }

            .category-hero-content {
                flex-direction: column;
                gap: 24px;
            }

            .category-hero-text h1 {
                font-size: 1.7rem;
            }

            .category-hero-stats {
                flex-direction: row;
                gap: 10px;
                width: 100%;
            }

            .hero-stat-item {
                flex: 1;
                min-width: 0;
                padding: 14px 12px;
            }

            .hero-stat-item .stat-num {
                font-size: 1.5rem;
            }

            .article-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .category-layout {
                gap: 20px;
            }

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

            .cta-block {
                padding: 36px 24px;
            }

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

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

            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }

            .pagination .page-btn {
                width: 36px;
                height: 36px;
                font-size: 0.82rem;
            }

            .container {
                padding: 0 16px;
            }

            .category-main {
                padding: 32px 0 48px;
            }

            .filter-bar-inner {
                gap: 4px;
            }

            .filter-tag {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

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

        @media (max-width: 520px) {
            .category-hero-text h1 {
                font-size: 1.45rem;
            }

            .category-hero-text .hero-desc {
                font-size: 0.9rem;
            }

            .category-hero-stats {
                gap: 6px;
            }

            .hero-stat-item {
                padding: 12px 10px;
            }

            .hero-stat-item .stat-num {
                font-size: 1.3rem;
            }

            .hero-stat-item .stat-label {
                font-size: 0.72rem;
            }

            .article-card-body {
                padding: 14px 16px 16px;
            }

            .article-card-title {
                font-size: 1rem;
            }

            .btn-cta-lg {
                width: 100%;
                justify-content: center;
            }

            .category-hero-badge {
                font-size: 0.75rem;
                padding: 5px 10px;
            }
        }