/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #c9a84c;
            --secondary-light: #e0c56a;
            --secondary-dark: #a88a2e;
            --accent: #e85d3a;
            --accent-light: #f07a5a;
            --bg-body: #f8f7f4;
            --bg-white: #ffffff;
            --bg-light: #f0efe9;
            --bg-dark: #1a1a2e;
            --text-primary: #1a1a2e;
            --text-body: #3d3d4a;
            --text-muted: #7a7a8a;
            --text-white: #f8f7f4;
            --border: #e0ded9;
            --border-light: #f0efe9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 42, 108, 0.14);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 76px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 2px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.25; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-title {
            font-size: 2.2rem;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 2.5rem;
        }
        .text-center { text-align: center; }
        .text-center .section-subtitle { margin-left: auto; margin-right: auto; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            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: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--secondary); font-size: 1.3rem; }
        .logo span { color: var(--secondary); }
        .logo:hover { color: var(--primary); opacity: 0.9; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: width var(--transition);
            border-radius: 2px;
        }
        .nav-list a:hover { color: var(--primary); }
        .nav-list a:hover::after { width: 100%; }
        .nav-list a.active { color: var(--primary); font-weight: 600; }
        .nav-list a.active::after { width: 100%; background: var(--primary); }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: var(--text-white) !important;
            padding: 10px 24px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .nav-cta i { font-size: 0.85rem; }
        .menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero Section ===== */
        .hero {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 80px;
            min-height: 88vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(201, 168, 76, 0.10) 0%, transparent 70%);
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 76, 0.18);
            border: 1px solid rgba(201, 168, 76, 0.30);
            color: var(--secondary-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero h1 {
            font-size: 3.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }
        .hero h1 span { color: var(--secondary); }
        .hero p {
            font-size: 1.2rem;
            color: rgba(248, 247, 244, 0.85);
            line-height: 1.7;
            max-width: 600px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
        }
        .btn-primary {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(201, 168, 76, 0.30);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(248, 247, 244, 0.30);
        }
        .btn-outline:hover {
            background: rgba(248, 247, 244, 0.10);
            border-color: rgba(248, 247, 244, 0.60);
            transform: translateY(-2px);
            color: var(--text-white);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(248, 247, 244, 0.12);
        }
        .hero-stat h3 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
        }
        .hero-stat h3 span { color: var(--secondary); }
        .hero-stat p {
            font-size: 0.9rem;
            color: rgba(248, 247, 244, 0.60);
            margin-top: 2px;
        }

        /* ===== Features / Core Services ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--secondary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card:hover::before { transform: scaleX(1); }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: rgba(26, 42, 108, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: var(--text-white);
        }
        .feature-card h3 { font-size: 1.3rem; margin-bottom: 10px; }
        .feature-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

        /* ===== Categories / Topics ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: block;
            color: inherit;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
            color: inherit;
        }
        .category-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover img { transform: scale(1.05); }
        .category-body {
            padding: 20px 24px 24px;
        }
        .category-body .tag {
            display: inline-block;
            background: rgba(201, 168, 76, 0.12);
            color: var(--secondary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .category-body h3 { font-size: 1.2rem; margin-bottom: 6px; }
        .category-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            margin-top: 12px;
        }
        .category-link i { font-size: 0.75rem; transition: transform var(--transition); }
        .category-card:hover .category-link i { transform: translateX(4px); }

        /* ===== Latest News / CMS List ===== */
        .news-list { display: flex; flex-direction: column; gap: 20px; }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-white);
            padding: 24px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: transparent;
            transform: translateX(4px);
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            min-width: 120px;
        }
        .news-item .news-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--secondary-dark);
            background: rgba(201, 168, 76, 0.10);
            padding: 2px 12px;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .news-item .news-date {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .news-item .news-title {
            flex: 1;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            transition: color var(--transition);
        }
        .news-item:hover .news-title { color: var(--primary); }
        .news-item .news-excerpt {
            display: none;
        }
        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border);
        }

        /* ===== Stats / Data Block ===== */
        .stats-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 2;
        }
        .stat-card {
            text-align: center;
            padding: 24px 16px;
        }
        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-card .stat-label {
            font-size: 1rem;
            color: rgba(248, 247, 244, 0.80);
            font-weight: 500;
        }
        .stat-card .stat-desc {
            font-size: 0.85rem;
            color: rgba(248, 247, 244, 0.50);
            margin-top: 4px;
        }

        /* ===== Process / How It Works ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(to right, var(--secondary), var(--primary), var(--secondary));
            opacity: 0.20;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 16px;
            border: 3px solid var(--bg-body);
            box-shadow: 0 0 0 3px var(--primary);
        }
        .process-step h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .process-step p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: background var(--transition);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
        }
        .faq-question:hover { background: rgba(26, 42, 108, 0.02); }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: var(--text-white);
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(248, 247, 244, 0.80);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }
        .cta-content .btn-primary {
            font-size: 1.1rem;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(248, 247, 244, 0.70);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(248, 247, 244, 0.08);
            margin-bottom: 28px;
        }
        .footer-brand .logo {
            color: var(--text-white);
            font-size: 1.4rem;
            margin-bottom: 12px;
        }
        .footer-brand .logo i { color: var(--secondary); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(248, 247, 244, 0.55);
            max-width: 300px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(248, 247, 244, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(248, 247, 244, 0.40);
        }
        .footer-bottom a { color: rgba(248, 247, 244, 0.50); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .categories-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid::before { display: none; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
            .hero h1 { font-size: 2.8rem; }
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 24px 32px 32px;
                gap: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                transition: all 0.35s ease;
                pointer-events: none;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a { font-size: 1.05rem; padding: 8px 0; }
            .nav-cta { justify-content: center; margin-top: 8px; }
            .menu-toggle { display: flex; }
            .hero { min-height: auto; padding-top: calc(var(--header-height) + 24px); padding-bottom: 48px; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1.05rem; }
            .hero-stats { gap: 24px; }
            .hero-stat h3 { font-size: 1.6rem; }
            .section { padding: 56px 0; }
            .section-title { font-size: 1.8rem; }
            .features-grid { grid-template-columns: 1fr; gap: 20px; }
            .categories-grid { grid-template-columns: 1fr; gap: 20px; }
            .news-item { flex-direction: column; gap: 10px; padding: 18px 20px; }
            .news-item .news-meta { min-width: auto; }
            .process-grid { grid-template-columns: 1fr; gap: 28px; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-card .stat-number { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .cta-content h2 { font-size: 1.8rem; }
            .faq-question { font-size: 0.95rem; padding: 16px 18px; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; width: 100%; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-item .news-title { font-size: 0.95rem; }
        }

        /* ===== Utility ===== */
        .gap-8 { gap: 8px; }
        .mt-16 { margin-top: 16px; }
        .mb-8 { margin-bottom: 8px; }
        .flex-wrap { flex-wrap: wrap; }
        .items-center { align-items: center; }
        .justify-center { justify-content: center; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2a3a;
            --primary-light: #2c4050;
            --primary-dark: #0f1a24;
            --accent: #c9a96e;
            --accent-hover: #b8924e;
            --accent-light: #e8d5b8;
            --bg-light: #f8f7f4;
            --bg-white: #ffffff;
            --bg-dark: #1a2a3a;
            --text-dark: #1a1a1a;
            --text-body: #3a3a3a;
            --text-light: #6a6a6a;
            --text-muted: #9a9a9a;
            --text-on-dark: #f0ede8;
            --border-light: #e5e1da;
            --border-medium: #d0cac2;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.06);
            --shadow-lg: 0 20px 50px rgba(0,0,0,0.08);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.10);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            padding-top: var(--header-h);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        button, input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 600; line-height: 1.3; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 48px 0; }
        .section-title {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }
        .section-sub {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 640px;
            margin-bottom: 2.5rem;
        }
        .text-center { text-align: center; }
        .mx-auto { margin-left: auto; margin-right: auto; }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }
        .logo i { color: var(--accent); font-size: 1.3rem; }
        .logo span { color: var(--accent); font-weight: 400; }
        .logo:hover { color: var(--primary); opacity: 0.88; }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.01em;
            transition: var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-list a:hover::after,
        .nav-list a.active::after { width: 100%; }
        .nav-list a:hover { color: var(--primary); }
        .nav-list a.active { color: var(--primary); font-weight: 600; }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .nav-list a.nav-cta::after { display: none; }
        .nav-list a.nav-cta:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(201,169,110,0.3);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: var(--border-light); }

        /* ===== Mobile Nav ===== */
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px 28px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                padding: 14px 0;
                width: 100%;
                border-bottom: 1px solid var(--border-light);
                font-size: 1rem;
            }
            .nav-list a:last-of-type { border-bottom: none; }
            .nav-list a.nav-cta {
                margin-top: 12px;
                justify-content: center;
                padding: 12px 22px;
                width: auto;
            }
            .nav-list a::after { display: none; }
            .nav-list a.active { color: var(--accent); }
        }

        /* ===== Category Banner ===== */
        .category-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary-dark) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 80px 24px 60px;
            isolation: isolate;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,36,0.82) 0%, rgba(26,42,58,0.65) 100%);
            z-index: 1;
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .category-banner h1 {
            font-size: 3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .category-banner h1 i { color: var(--accent); margin-right: 10px; }
        .category-banner p {
            font-size: 1.15rem;
            color: rgba(248,247,244,0.85);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .category-banner .banner-tags span {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            color: var(--accent-light);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            border: 1px solid rgba(201,169,110,0.25);
        }

        /* ===== Guide Intro ===== */
        .guide-intro {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .guide-intro .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .guide-intro .intro-text h2 { font-size: 1.8rem; margin-bottom: 16px; }
        .guide-intro .intro-text p { color: var(--text-light); margin-bottom: 16px; }
        .guide-intro .intro-text .highlight {
            color: var(--accent);
            font-weight: 600;
        }
        .guide-intro .intro-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
            background: var(--border-light);
        }
        .guide-intro .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .guide-intro .intro-image:hover img { transform: scale(1.02); }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-light);
        }
        .content-card .card-img {
            aspect-ratio: 16/10;
            background: var(--border-light);
            overflow: hidden;
        }
        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .content-card:hover .card-img img { transform: scale(1.04); }
        .content-card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .content-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .content-card h3 a { color: var(--text-dark); }
        .content-card h3 a:hover { color: var(--accent); }
        .content-card .card-excerpt {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .content-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .content-card .card-meta i { margin-right: 4px; color: var(--accent); }

        /* ===== Features / Sub Categories ===== */
        .sub-categories {
            background: var(--bg-white);
        }
        .sub-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .sub-item {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sub-item:hover {
            border-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .sub-item .icon-box {
            width: 56px;
            height: 56px;
            background: var(--accent-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: var(--accent);
            font-size: 1.4rem;
            transition: var(--transition);
        }
        .sub-item:hover .icon-box {
            background: var(--accent);
            color: #fff;
        }
        .sub-item h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .sub-item p { font-size: 0.88rem; color: var(--text-light); }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--primary-dark);
            color: var(--text-on-dark);
            padding: 60px 0;
        }
        .stats-section .container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-section .stat-item h3 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 4px;
        }
        .stats-section .stat-item p {
            font-size: 0.95rem;
            color: rgba(248,247,244,0.7);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent-light); }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
            text-align: left;
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 0;
            text-align: center;
            isolation: isolate;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26,42,58,0.78);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(248,247,244,0.8);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201,169,110,0.35);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255,255,255,0.4);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-on-dark);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { color: #fff; font-size: 1.3rem; margin-bottom: 16px; display: inline-flex; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p {
            color: rgba(248,247,244,0.55);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 18px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(248,247,244,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(248,247,244,0.35);
        }
        .footer-bottom a { color: rgba(248,247,244,0.45); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
            .sub-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-section .container { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .guide-intro .grid-2 { grid-template-columns: 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .section-pad { padding: 56px 0; }
            .section-title { font-size: 1.6rem; }
            .category-banner h1 { font-size: 2rem; }
            .category-banner p { font-size: 1rem; }
            .card-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
            .sub-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stats-section .container { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .guide-intro .grid-2 { gap: 24px; }
        }
        @media (max-width: 520px) {
            .category-banner { min-height: 260px; padding: 60px 16px 40px; }
            .category-banner h1 { font-size: 1.6rem; }
            .sub-grid { grid-template-columns: 1fr; }
            .stats-section .container { grid-template-columns: 1fr; }
            .container { padding: 0 16px; }
            .btn { padding: 10px 24px; font-size: 0.9rem; }
            .nav-list a { font-size: 0.95rem; }
        }

/* roulang page: article */
:root {
    --primary: #b8942e;
    --primary-dark: #9a7a22;
    --primary-light: #d4b44a;
    --secondary: #1a1a2e;
    --bg: #f8f7f4;
    --bg-card: #ffffff;
    --bg-dark: #14141f;
    --text: #1e1e1e;
    --text-light: #6b6b6b;
    --text-white: #f8f7f4;
    --border: #e5e3dc;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --max-w: 1200px;
    --gap: 2rem;
    --section-py: 5rem;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }

/* header */
.site-header { background: var(--bg-card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(12px); background: rgba(255,255,255,0.92); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-size: 1.5rem; font-weight: 700; color: var(--text); letter-spacing: -0.5px; display: flex; align-items: center; gap: 8px; }
.logo i { color: var(--primary); font-size: 1.4rem; }
.logo span { color: var(--primary); }
.nav-list { display: flex; align-items: center; gap: 0.25rem; }
.nav-list li a { display: block; padding: 0.5rem 1rem; font-size: 0.95rem; font-weight: 500; color: var(--text-light); border-radius: var(--radius-sm); transition: var(--transition); position: relative; }
.nav-list li a:hover { color: var(--text); background: rgba(184,148,46,0.06); }
.nav-list li a.active { color: var(--primary); background: rgba(184,148,46,0.08); }
.nav-list li a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--primary); border-radius: 2px; }
.nav-list li a.nav-cta { background: var(--primary); color: #fff; padding: 0.5rem 1.25rem; border-radius: 50px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.nav-list li a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(184,148,46,0.30); }
.menu-toggle { display: none; font-size: 1.5rem; color: var(--text); padding: 0.5rem; background: none; border: none; }

/* article hero */
.article-hero { position: relative; padding: 4rem 0 2.5rem; background: var(--bg-dark); overflow: hidden; }
.article-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.25; }
.article-hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(20,20,31,0.88) 0%, rgba(26,26,46,0.72) 100%); }
.article-hero .container { position: relative; z-index: 2; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-bottom: 1.25rem; }
.article-category { display: inline-block; padding: 0.25rem 1rem; background: var(--primary); color: #fff; font-size: 0.8rem; font-weight: 600; border-radius: 50px; letter-spacing: 0.3px; }
.article-date { color: rgba(248,247,244,0.55); font-size: 0.85rem; display: flex; align-items: center; gap: 6px; }
.article-date i { font-size: 0.75rem; }
.article-hero h1 { font-size: 2.8rem; font-weight: 800; color: var(--text-white); line-height: 1.2; letter-spacing: -0.5px; max-width: 800px; margin-bottom: 1rem; }
.article-hero .article-intro { font-size: 1.1rem; color: rgba(248,247,244,0.7); max-width: 680px; line-height: 1.7; }
.article-hero .article-stats { display: flex; gap: 1.5rem; margin-top: 1.5rem; }
.article-hero .article-stats span { color: rgba(248,247,244,0.4); font-size: 0.85rem; display: flex; align-items: center; gap: 6px; }
.article-hero .article-stats i { font-size: 0.8rem; }

/* main content */
.article-main { padding: 3rem 0 4rem; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 3rem; }
.article-body { background: var(--bg-card); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow); }
.article-cover-img { width: 100%; border-radius: var(--radius); margin-bottom: 2rem; max-height: 480px; object-fit: cover; }
.article-content { font-size: 1.05rem; line-height: 1.9; color: var(--text); }
.article-content p { margin-bottom: 1.25rem; }
.article-content h2 { font-size: 1.6rem; font-weight: 700; margin: 2rem 0 1rem; color: var(--secondary); }
.article-content h3 { font-size: 1.25rem; font-weight: 700; margin: 1.5rem 0 0.75rem; }
.article-content ul, .article-content ol { margin: 1rem 0 1.5rem 1.5rem; }
.article-content li { margin-bottom: 0.5rem; }
.article-content blockquote { border-left: 4px solid var(--primary); background: rgba(184,148,46,0.06); padding: 1.25rem 1.5rem; margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light); font-style: italic; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-dark); }
.article-footer-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.article-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.article-tags span { display: inline-block; padding: 0.2rem 0.8rem; background: rgba(184,148,46,0.08); color: var(--primary); font-size: 0.8rem; border-radius: 50px; font-weight: 500; }
.article-share { display: flex; align-items: center; gap: 0.75rem; color: var(--text-light); font-size: 0.9rem; }
.article-share a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg); color: var(--text-light); transition: var(--transition); }
.article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-card { background: var(--bg-card); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); }
.sidebar-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--primary); display: inline-block; }
.sidebar-card ul li { padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.sidebar-card ul li:last-child { border-bottom: none; }
.sidebar-card ul li a { font-size: 0.9rem; color: var(--text-light); display: block; transition: var(--transition); }
.sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
.sidebar-card ul li a i { margin-right: 8px; color: var(--primary); font-size: 0.75rem; }
.sidebar-cta { background: linear-gradient(135deg, var(--secondary), #2a2a4e); color: var(--text-white); }
.sidebar-cta h3 { color: var(--primary-light); border-bottom-color: var(--primary); }
.sidebar-cta p { font-size: 0.9rem; color: rgba(248,247,244,0.7); margin-bottom: 1rem; line-height: 1.6; }
.sidebar-cta .btn { width: 100%; text-align: center; }

/* related posts */
.related-section { padding: 3rem 0 4rem; background: var(--bg-card); }
.related-section .section-title { text-align: center; margin-bottom: 2.5rem; }
.related-section .section-title h2 { font-size: 2rem; font-weight: 800; color: var(--secondary); }
.related-section .section-title p { color: var(--text-light); margin-top: 0.5rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.related-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
.related-card-body { padding: 1.25rem; }
.related-card-body .rc-cat { font-size: 0.75rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.related-card-body h4 { font-size: 1rem; font-weight: 700; margin: 0.3rem 0 0.5rem; line-height: 1.4; }
.related-card-body h4 a { color: var(--text); }
.related-card-body h4 a:hover { color: var(--primary); }
.related-card-body .rc-date { font-size: 0.8rem; color: var(--text-light); }

/* faq */
.faq-section { padding: var(--section-py) 0; background: var(--bg); }
.faq-section .section-title { text-align: center; margin-bottom: 3rem; }
.faq-section .section-title h2 { font-size: 2rem; font-weight: 800; color: var(--secondary); }
.faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
.faq-item { background: var(--bg-card); border-radius: var(--radius); padding: 1.25rem 1.5rem; box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); }
.faq-item:hover { border-color: var(--primary-light); }
.faq-question { font-weight: 700; font-size: 1.05rem; display: flex; justify-content: space-between; align-items: center; cursor: pointer; color: var(--text); }
.faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { margin-top: 0.75rem; color: var(--text-light); line-height: 1.7; display: none; }
.faq-item.open .faq-answer { display: block; }

/* cta */
.cta-section { padding: var(--section-py) 0; background: var(--bg-dark); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover; opacity: 0.10; }
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { font-size: 2.4rem; font-weight: 800; color: var(--text-white); margin-bottom: 1rem; }
.cta-section p { font-size: 1.1rem; color: rgba(248,247,244,0.6); max-width: 600px; margin: 0 auto 1.5rem; }
.cta-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* btn */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 0.75rem 2rem; font-size: 1rem; font-weight: 600; border-radius: 50px; transition: var(--transition); border: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(184,148,46,0.30); }
.btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--secondary); }
.btn-white:hover { background: var(--bg); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }

/* error state */
.error-state { text-align: center; padding: 6rem 2rem; }
.error-state i { font-size: 4rem; color: var(--primary); margin-bottom: 1rem; }
.error-state h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.75rem; }
.error-state p { color: var(--text-light); margin-bottom: 1.5rem; }

/* footer */
.site-footer { background: var(--bg-dark); color: var(--text-white); padding: 3.5rem 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
.footer-brand .logo { color: var(--text-white); font-size: 1.4rem; margin-bottom: 1rem; }
.footer-brand p { color: rgba(248,247,244,0.5); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 1rem; color: var(--text-white); }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul li a { color: rgba(248,247,244,0.5); font-size: 0.9rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom { margin-top: 2.5rem; padding: 1.25rem 0; border-top: 1px solid rgba(248,247,244,0.08); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; color: rgba(248,247,244,0.3); font-size: 0.8rem; }
.footer-bottom a { color: rgba(248,247,244,0.5); }
.footer-bottom a:hover { color: var(--primary-light); }

/* responsive */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    :root { --section-py: 3rem; }
    .menu-toggle { display: block; }
    .nav-list { display: none; flex-direction: column; background: var(--bg-card); position: absolute; top: 72px; left: 0; right: 0; padding: 1rem; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
    .nav-list.open { display: flex; }
    .nav-list li a { padding: 0.75rem 1rem; width: 100%; }
    .article-hero h1 { font-size: 2rem; }
    .article-hero { padding: 3rem 0 2rem; }
    .article-body { padding: 1.5rem; }
    .article-sidebar { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .cta-section h2 { font-size: 1.8rem; }
    .article-hero .article-stats { flex-wrap: wrap; gap: 1rem; }
}
@media (max-width: 520px) {
    .article-hero h1 { font-size: 1.6rem; }
    .article-body { padding: 1rem; }
    .article-content { font-size: 0.95rem; }
    .article-footer-meta { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .btn { width: 100%; justify-content: center; }
    .header-inner { height: 64px; }
    .logo { font-size: 1.2rem; }
}