/* roulang page: index */
:root {
            --primary: #2E6FA3;
            --primary-dark: #1F5682;
            --primary-light: #DCE9F2;
            --bg: #F7FAFD;
            --card-bg: #FFFFFF;
            --text-main: #142B3C;
            --text-body: #34495E;
            --text-muted: #6C8298;
            --border: #E1EAF2;
            --border-input: #D6E2ED;
            --accent: #C9A14F;
            --accent-light: #F5EFE0;
            --shadow: 0 10px 30px rgba(28,60,90,0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 32px;
            --space-5: 48px;
            --space-6: 64px;
            --max-width: 1200px;
            --transition: 0.3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            background: #EEF3F8;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: transparent;
        }
        button {
            cursor: pointer;
        }
        :focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-3);
        }
        .section {
            padding: var(--space-6) 0;
        }
        .section--alt {
            background: #F0F5FA;
        }
        .section-header {
            margin-bottom: var(--space-4);
        }
        .section-header h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: var(--space-2);
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }
        .tag--accent {
            background: var(--accent-light);
            color: #8A6D2F;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn--primary {
            background: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(46,111,163,0.25);
        }
        .btn--primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(31,86,130,0.3);
        }
        .btn--outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn--outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn--sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn--lg {
            padding: 14px 36px;
            font-size: 16px;
        }
        .btn:active {
            transform: translateY(0);
        }
        /* Header */
        #site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        #site-header.scrolled {
            box-shadow: 0 4px 20px rgba(28,60,90,0.1);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-2) 0;
            gap: var(--space-2);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 14px;
            gap: 8px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46,111,163,0.12);
        }
        .search-box input {
            width: 160px;
            font-size: 14px;
            color: var(--text-main);
            background: transparent;
            border: none;
            padding: 4px 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box i {
            color: var(--text-muted);
            font-size: 14px;
        }
        .login-link {
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 12px;
            border-radius: 8px;
            transition: all var(--transition);
        }
        .login-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .header-nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 6px 0 var(--space-2);
            gap: var(--space-3);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            gap: 4px;
            flex-direction: column;
            cursor: pointer;
            transition: all var(--transition);
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary-light);
        }
        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: var(--space-2) var(--space-3);
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu a {
            padding: 12px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 10px;
            transition: all var(--transition);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .mobile-menu.open {
            display: flex;
        }

        /* Hero */
        .hero {
            background: #F0F5FA;
            border-bottom: 1px solid var(--border);
            padding: var(--space-5) 0 var(--space-4);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(46,111,163,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: var(--space-4);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: var(--space-2);
            letter-spacing: 0.01em;
        }
        .hero-content .hero-subtitle {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: var(--space-3);
            max-width: 560px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-2);
            margin-bottom: var(--space-3);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-3);
        }
        .hero-stat {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            text-align: center;
            min-width: 110px;
            box-shadow: 0 2px 8px rgba(28,60,90,0.04);
        }
        .hero-stat .stat-number {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .hero-stat .stat-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .hero-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            aspect-ratio: 4/3;
            background: #E4EDF5;
        }
        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .hero-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(20,43,60,0.35), transparent);
            pointer-events: none;
        }
        .hero-image .hero-image-caption {
            position: absolute;
            bottom: 14px;
            left: 16px;
            right: 16px;
            z-index: 2;
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.02em;
            text-shadow: 0 1px 4px rgba(0,0,0,0.2);
        }

        /* Data Board */
        .data-board {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-2);
        }
        .data-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-3);
            text-align: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .data-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(28,60,90,0.12);
        }
        .data-card .data-number {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .data-card .data-number.accent {
            color: var(--accent);
        }
        .data-card .data-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }
        .data-card .data-trend {
            font-size: 12px;
            color: #4CAF50;
            margin-top: 4px;
            display: inline-block;
            background: #E8F5E9;
            padding: 2px 10px;
            border-radius: 999px;
        }

        /* Service Matrix - asymmetric layout */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: var(--space-2);
        }
        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            grid-column: span 4;
        }
        .service-card:nth-child(1) { grid-column: span 5; }
        .service-card:nth-child(2) { grid-column: span 7; }
        .service-card:nth-child(3) { grid-column: span 4; }
        .service-card:nth-child(4) { grid-column: span 4; }
        .service-card:nth-child(5) { grid-column: span 4; }
        .service-card:nth-child(6) { grid-column: span 12; }
        .service-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(28,60,90,0.12);
        }
        .service-card .service-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #E4EDF5;
        }
        .service-card .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition);
        }
        .service-card:hover .service-img img {
            transform: scale(1.03);
        }
        .service-card .service-body {
            padding: var(--space-3);
        }
        .service-card .service-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .service-card .service-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .service-card .service-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .service-card .service-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Scene Topics */
        .scene-track {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-2);
        }
        .scene-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            cursor: pointer;
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 40px rgba(28,60,90,0.14);
        }
        .scene-card .scene-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: #E4EDF5;
        }
        .scene-card .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition);
        }
        .scene-card:hover .scene-img img {
            transform: scale(1.05);
        }
        .scene-card .scene-img .scene-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255,255,255,0.92);
            color: var(--text-main);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            z-index: 2;
        }
        .scene-card .scene-body {
            padding: var(--space-2) var(--space-3);
        }
        .scene-card .scene-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .scene-card .scene-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* Comparison */
        .comparison-section {
            background: var(--text-main);
            border-radius: var(--radius);
            padding: var(--space-5);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .comparison-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201,161,79,0.15), transparent 70%);
            border-radius: 50%;
        }
        .comparison-section .section-header h2 {
            color: #FFFFFF;
        }
        .comparison-section .section-header p {
            color: #B8C9D8;
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 80px 1fr;
            gap: var(--space-3);
            align-items: stretch;
            position: relative;
            z-index: 1;
        }
        .comparison-panel {
            background: #1E3A50;
            border-radius: var(--radius-sm);
            padding: var(--space-3);
            border: 1px solid #2E4A60;
        }
        .comparison-panel h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--space-2);
            padding-bottom: var(--space-2);
            border-bottom: 1px solid #2E4A60;
        }
        .comparison-panel ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .comparison-panel ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #D5E0EA;
            line-height: 1.5;
        }
        .comparison-panel ul li i {
            color: #4CAF50;
            flex-shrink: 0;
            font-size: 16px;
        }
        .comparison-panel ul li.warn i {
            color: #FFB74D;
        }
        .comparison-divider {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .comparison-divider span {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 0.05em;
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
            border-left: 3px solid var(--primary-light);
            display: flex;
            flex-direction: column;
            gap: var(--space-3);
        }
        .timeline-item {
            position: relative;
            padding-left: var(--space-3);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -39px;
            top: 5px;
            width: 14px;
            height: 14px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .timeline-item .timeline-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
            letter-spacing: 0.03em;
        }
        .timeline-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .timeline-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* News list */
        .news-list {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--space-3);
        }
        .news-main {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            gap: var(--space-2);
            padding: var(--space-2);
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(28,60,90,0.12);
        }
        .news-card .news-img {
            width: 160px;
            aspect-ratio: 4/3;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: #E4EDF5;
            flex-shrink: 0;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .news-card .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .news-card .news-content h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-content h3 a {
            color: var(--text-main);
        }
        .news-card .news-content h3 a:hover {
            color: var(--primary);
        }
        .news-card .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-card .news-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-3);
            box-shadow: var(--shadow);
            height: fit-content;
        }
        .news-sidebar h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: var(--space-2);
            padding-bottom: var(--space-2);
            border-bottom: 2px solid var(--primary-light);
        }
        .news-sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-sidebar ul li a {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.5;
            display: block;
            padding: 8px 10px;
            border-radius: 8px;
            transition: all var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-sidebar ul li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .empty-state {
            text-align: center;
            padding: var(--space-4);
            color: var(--text-muted);
            font-size: 15px;
            background: var(--card-bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
        }

        /* Guarantee */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-2);
        }
        .guarantee-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-3);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            text-align: center;
        }
        .guarantee-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(28,60,90,0.12);
        }
        .guarantee-card .guarantee-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-2);
            color: var(--primary);
            font-size: 22px;
        }
        .guarantee-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .guarantee-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* Quick answers */
        .quick-qa-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .quick-qa-item {
            display: flex;
            align-items: flex-start;
            gap: var(--space-2);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: var(--space-2) var(--space-3);
            transition: all var(--transition);
        }
        .quick-qa-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(28,60,90,0.08);
        }
        .quick-qa-item .qa-number {
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .quick-qa-item .qa-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .quick-qa-item .qa-content h4 a {
            color: var(--text-main);
        }
        .quick-qa-item .qa-content h4 a:hover {
            color: var(--primary);
        }
        .quick-qa-item .qa-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: var(--space-2) var(--space-3);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-2);
            transition: all var(--transition);
            -webkit-tap-highlight-color: transparent;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item summary:hover {
            background: #F8FBFE;
        }
        .faq-item .faq-answer {
            padding: 0 var(--space-3) var(--space-3);
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }
        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(28,60,90,0.08);
        }

        /* Gallery */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-2);
        }
        .gallery-item {
            aspect-ratio: 4/3;
            overflow: hidden;
            border-radius: var(--radius-sm);
            position: relative;
            background: #E4EDF5;
            cursor: pointer;
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition);
        }
        .gallery-item:hover img {
            transform: scale(1.06);
        }
        .gallery-item::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(20,43,60,0.3), transparent 50%);
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }
        .gallery-item:hover::after {
            opacity: 1;
        }
        .gallery-item .gallery-caption {
            position: absolute;
            bottom: 10px;
            left: 12px;
            right: 12px;
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 500;
            z-index: 2;
            opacity: 0;
            transition: opacity var(--transition);
            text-shadow: 0 1px 4px rgba(0,0,0,0.25);
        }
        .gallery-item:hover .gallery-caption {
            opacity: 1;
        }

        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-3);
        }
        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-3);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .review-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(28,60,90,0.12);
        }
        .review-card .review-header {
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }
        .review-card .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            overflow: hidden;
            background: #E4EDF5;
            flex-shrink: 0;
        }
        .review-card .review-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .review-card .review-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }
        .review-card .review-info .stars {
            color: var(--accent);
            font-size: 14px;
            letter-spacing: 2px;
        }
        .review-card .review-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }
        .review-card .review-source {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Form */
        .form-section {
            background: var(--text-main);
            border-radius: var(--radius);
            padding: var(--space-5);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .form-section::before {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(201,161,79,0.15), transparent 70%);
            border-radius: 50%;
        }
        .form-section .section-header h2 {
            color: #FFFFFF;
        }
        .form-section .section-header p {
            color: #B8C9D8;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: var(--space-4);
            position: relative;
            z-index: 1;
        }
        .form-info h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--space-2);
        }
        .form-info ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .form-info ul li {
            font-size: 14px;
            color: #D5E0EA;
            line-height: 1.6;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .form-info ul li i {
            color: var(--accent);
            font-style: normal;
            font-weight: 700;
        }
        .contact-form {
            background: #1E3A50;
            border-radius: var(--radius-sm);
            padding: var(--space-3);
            border: 1px solid #2E4A60;
        }
        .contact-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-2);
            margin-bottom: var(--space-2);
        }
        .contact-form .form-group {
            margin-bottom: var(--space-2);
        }
        .contact-form .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: #D5E0EA;
            margin-bottom: 6px;
        }
        .contact-form .form-group input,
        .contact-form .form-group select,
        .contact-form .form-group textarea {
            width: 100%;
            background: #FFFFFF;
            border: 1.5px solid transparent;
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--text-main);
            transition: all var(--transition);
        }
        .contact-form .form-group input:focus,
        .contact-form .form-group select:focus,
        .contact-form .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46,111,163,0.15);
        }
        .contact-form .form-group input.error,
        .contact-form .form-group textarea.error {
            border-color: #E53935;
            box-shadow: 0 0 0 3px rgba(229,57,53,0.12);
        }
        .contact-form .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }
        .contact-form .form-group .error-msg {
            font-size: 12px;
            color: #FF8A80;
            margin-top: 4px;
            display: none;
        }
        .contact-form .form-group .error-msg.show {
            display: block;
        }
        .form-success {
            text-align: center;
            padding: var(--space-3);
            background: #E8F5E9;
            color: #2E7D32;
            border-radius: 8px;
            font-weight: 500;
            display: none;
        }
        .form-success.show {
            display: block;
        }

        /* About */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: var(--space-4);
            align-items: center;
        }
        .about-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: var(--space-2);
        }
        .about-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: var(--space-2);
        }
        .about-text .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: var(--space-2);
        }
        .about-text .about-tags span {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 999px;
            font-weight: 500;
        }
        .about-image {
            aspect-ratio: 4/3;
            border-radius: var(--radius);
            overflow: hidden;
            background: #E4EDF5;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        /* Contact */
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-2);
        }
        .contact-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-3);
            text-align: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .contact-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 36px rgba(28,60,90,0.12);
        }
        .contact-card .contact-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-2);
            color: var(--primary);
            font-size: 20px;
        }
        .contact-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .contact-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* City sites */
        .city-sites {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .city-site-link {
            display: inline-block;
            padding: 10px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            box-shadow: 0 2px 6px rgba(28,60,90,0.04);
        }
        .city-site-link:hover {
            color: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(28,60,90,0.1);
        }

        /* Footer */
        footer {
            background: #142B3C;
            color: #B8C9D8;
            padding: var(--space-5) 0 var(--space-3);
            margin-top: var(--space-6);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--space-4);
            margin-bottom: var(--space-4);
        }
        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--space-2);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand h3 .brand-icon {
            width: 30px;
            height: 30px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: #8DA3B8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--space-2);
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: #8DA3B8;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: #FFFFFF;
        }
        .footer-col ul li {
            font-size: 14px;
            color: #8DA3B8;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid #1E3A50;
            padding-top: var(--space-3);
            text-align: center;
            font-size: 13px;
            color: #6C8298;
        }
        .footer-bottom a {
            color: #8DA3B8;
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .data-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .service-card:nth-child(1),
            .service-card:nth-child(2),
            .service-card:nth-child(3),
            .service-card:nth-child(4),
            .service-card:nth-child(5),
            .service-card:nth-child(6) {
                grid-column: span 6;
            }
            .scene-track {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--space-5) 0;
            }
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .hero-image {
                aspect-ratio: 16/9;
                order: 2;
            }
            .hero-content {
                order: 1;
            }
            .data-board {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-2);
            }
            .service-card:nth-child(1),
            .service-card:nth-child(2),
            .service-card:nth-child(3),
            .service-card:nth-child(4),
            .service-card:nth-child(5),
            .service-card:nth-child(6) {
                grid-column: span 12;
            }
            .scene-track {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: var(--space-2);
            }
            .comparison-divider span {
                transform: rotate(90deg);
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-img {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .contact-form .form-row {
                grid-template-columns: 1fr;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .about-image {
                order: -1;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .header-actions .search-box {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-nav-row {
                display: none;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .hero-stats {
                gap: var(--space-2);
            }
            .hero-stat {
                min-width: 90px;
                padding: 10px 14px;
            }
            .hero-stat .stat-number {
                font-size: 17px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--space-2);
            }
            .data-board {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-2);
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .gallery-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-2);
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-content .hero-subtitle {
                font-size: 14px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .comparison-section,
            .form-section {
                padding: var(--space-3);
            }
            .news-card {
                padding: var(--space-2);
            }
            .news-card .news-content h3 {
                font-size: 14px;
            }
            .brand {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .faq-item summary {
                font-size: 14px;
                padding: var(--space-2);
            }
            .timeline {
                padding-left: 22px;
            }
            .timeline-item::before {
                left: -29px;
                width: 12px;
                height: 12px;
            }
        }

/* roulang page: article */
:root {
            --primary: #2E6FA3;
            --primary-dark: #1F5682;
            --primary-light: #DCE9F2;
            --bg: #F7FAFD;
            --card-bg: #FFFFFF;
            --text-main: #142B3C;
            --text-body: #34495E;
            --text-muted: #6C8298;
            --border: #E1EAF2;
            --border-input: #D6E2ED;
            --accent: #C9A14F;
            --accent-light: #F5EFE0;
            --shadow: 0 10px 30px rgba(28,60,90,0.08);
            --shadow-hover: 0 16px 40px rgba(28,60,90,0.14);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 32px;
            --space-5: 48px;
            --space-6: 64px;
            --max-width: 1200px;
            --transition: 0.3s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        main {
            flex: 1;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            background: #EEF3F8;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: transparent;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-3);
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
            cursor: pointer;
            border: 1.5px solid transparent;
        }
        .btn--primary {
            background: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(46,111,163,0.25);
        }
        .btn--primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(31,86,130,0.3);
        }
        .btn--outline {
            background: #FFFFFF;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn--outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn--sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn--lg {
            padding: 14px 36px;
            font-size: 16px;
        }
        .btn:active {
            transform: translateY(0);
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #FFFFFF;
        }
        .tag--accent {
            background: var(--accent-light);
            color: #8A6D2F;
        }
        /* Header */
        #site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition), padding var(--transition);
        }
        #site-header.scrolled {
            box-shadow: 0 4px 20px rgba(28,60,90,0.1);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-2) 0;
            gap: var(--space-2);
            flex-wrap: wrap;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 14px;
            gap: 8px;
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 220px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46,111,163,0.12);
        }
        .search-box svg {
            flex-shrink: 0;
            color: var(--text-muted);
        }
        .search-box input {
            flex: 1;
            font-size: 14px;
            color: var(--text-main);
            background: transparent;
            border: none;
            outline: none;
            min-width: 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }
        .header-nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-2);
            padding: var(--space-1) 0;
            border-top: 1px solid var(--border);
            transition: all var(--transition);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .main-nav a {
            display: inline-block;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: #FFFFFF;
            background: var(--primary);
        }
        .header-cta {
            flex-shrink: 0;
        }
        /* Breadcrumb */
        .breadcrumb-bar {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: var(--space-2) 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--primary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb .sep {
            color: #B8C7D4;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text-body);
            font-weight: 500;
            word-break: break-all;
        }
        /* Article Hero */
        .article-hero {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: var(--space-5) 0 var(--space-4);
        }
        .article-hero h1 {
            font-size: clamp(24px, 3.2vw, 36px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: var(--space-3);
            letter-spacing: 0.01em;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-2);
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: var(--bg);
            border-radius: 999px;
        }
        .article-meta .meta-item svg {
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .article-meta .meta-category {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 600;
        }
        /* Article Body */
        .article-body {
            padding: var(--space-5) 0;
        }
        .article-body .container {
            max-width: 820px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            word-wrap: break-word;
            overflow-wrap: break-word;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.45;
            margin: var(--space-5) 0 var(--space-3);
            padding-top: var(--space-2);
            border-top: 1px solid var(--border);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: var(--space-4) 0 var(--space-2);
        }
        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: var(--space-3) 0 var(--space-2);
        }
        .article-content h5,
        .article-content h6 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin: var(--space-3) 0 var(--space-2);
        }
        .article-content p {
            margin-bottom: var(--space-3);
        }
        .article-content ul,
        .article-content ol {
            margin: var(--space-2) 0 var(--space-3);
            padding-left: 24px;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: var(--space-1);
            line-height: 1.8;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition);
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content blockquote {
            margin: var(--space-3) 0;
            padding: var(--space-3) var(--space-4);
            background: #F0F5FA;
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-body);
        }
        .article-content img {
            margin: var(--space-3) 0;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: var(--space-3) 0;
            font-size: 15px;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content table th {
            background: var(--primary-light);
            color: var(--text-main);
            font-weight: 600;
        }
        .article-content code {
            background: #F0F5FA;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }
        .article-content pre {
            background: #142B3C;
            color: #E8EEF4;
            padding: var(--space-3);
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: var(--space-3) 0;
        }
        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-not-found {
            text-align: center;
            padding: var(--space-6) var(--space-3);
            background: #FFFFFF;
            border: 1px dashed var(--border);
            border-radius: var(--radius);
        }
        .article-not-found p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: var(--space-3);
        }
        /* Article Gallery */
        .article-gallery {
            padding: var(--space-5) 0;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-3);
        }
        .gallery-grid figure {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            background: #FFFFFF;
            border: 1px solid var(--border);
        }
        .gallery-grid figure:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .gallery-grid img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .gallery-grid figcaption {
            padding: var(--space-2) var(--space-3);
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }
        /* Related Posts */
        .related-posts {
            padding: var(--space-5) 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-3);
        }
        .related-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .related-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card-body {
            padding: var(--space-3);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: var(--space-1);
        }
        .related-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
        }
        .related-card-body h3 a {
            color: inherit;
            transition: color var(--transition);
        }
        .related-card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-body .related-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            padding-top: var(--space-1);
            border-top: 1px solid var(--border);
        }
        /* Article Back */
        .article-back {
            padding: 0 0 var(--space-4);
        }
        .article-back .container {
            max-width: 820px;
        }
        .back-row {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-2);
            align-items: center;
        }
        /* Tags Cloud */
        .article-tags {
            padding: var(--space-4) 0;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .tags-cloud .tag {
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--bg);
            color: var(--text-body);
            transition: all var(--transition);
        }
        .tags-cloud .tag:hover {
            background: var(--primary);
            color: #FFFFFF;
        }
        .tags-cloud .tags-label {
            font-weight: 600;
            color: var(--text-main);
            font-size: 14px;
            margin-right: 4px;
        }
        /* CTA Section */
        .article-cta {
            padding: var(--space-5) 0;
        }
        .cta-panel {
            background: linear-gradient(135deg, #142B3C 0%, #1F5682 100%);
            border-radius: var(--radius);
            padding: var(--space-5) var(--space-4);
            color: #FFFFFF;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: var(--space-4);
            align-items: center;
            box-shadow: 0 12px 32px rgba(20,43,60,0.24);
        }
        .cta-panel h2 {
            font-size: clamp(20px, 2.4vw, 26px);
            font-weight: 700;
            margin-bottom: var(--space-1);
            color: #FFFFFF;
        }
        .cta-panel p {
            font-size: 14px;
            color: #C5D8E8;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            gap: var(--space-2);
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        .cta-actions .btn--primary {
            background: #FFFFFF;
            color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(0,0,0,0.2);
        }
        .cta-actions .btn--primary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .cta-actions .btn--outline {
            background: transparent;
            color: #FFFFFF;
            border-color: rgba(255,255,255,0.6);
        }
        .cta-actions .btn--outline:hover {
            background: rgba(255,255,255,0.1);
            color: #FFFFFF;
        }
        /* Footer */
        footer {
            background: #142B3C;
            color: #C5D8E8;
            padding: var(--space-5) 0 var(--space-3);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-4);
            margin-bottom: var(--space-4);
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: var(--space-2);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand h3 .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #FFFFFF;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: var(--space-2);
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li,
        .footer-col ul li a {
            font-size: 14px;
            color: #C5D8E8;
            line-height: 1.6;
        }
        .footer-col ul li a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: var(--space-3);
            text-align: center;
            font-size: 13px;
            color: #9BB0C4;
        }
        .footer-bottom a {
            color: #C5D8E8;
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }
        /* Section Header Shared */
        .section {
            padding: var(--space-5) 0;
        }
        .section-header {
            margin-bottom: var(--space-4);
        }
        .section-header h2 {
            font-size: clamp(22px, 2.6vw, 28px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: var(--space-2);
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }
        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .search-box {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .header-nav-row {
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-2) 0;
                border-top: 1px solid var(--border);
            }
            .header-nav-row.open {
                display: flex;
            }
            .main-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
            }
            .main-nav a {
                padding: 10px 16px;
                font-size: 15px;
                border-radius: 8px;
            }
            .header-cta {
                padding: var(--space-2) 0 2px;
            }
            .header-cta .btn {
                width: 100%;
            }
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-2);
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: var(--space-2);
            }
            .article-hero {
                padding: var(--space-3) 0;
            }
            .article-hero h1 {
                font-size: clamp(20px, 2.2vw, 26px);
            }
            .article-body {
                padding: var(--space-3) 0;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .cta-panel {
                grid-template-columns: 1fr;
                padding: var(--space-3) var(--space-3);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .tags-cloud {
                gap: 8px;
            }
            .tags-cloud .tag {
                font-size: 12px;
                padding: 5px 12px;
            }
        }
        @media (max-width: 520px) {
            .gallery-grid {
                grid-template-columns: 1fr;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .brand {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
            .back-row .btn {
                width: 100%;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn {
                flex: 1;
                justify-content: center;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .breadcrumb .current {
                max-width: 150px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2E6FA3;
            --primary-dark: #1F5682;
            --primary-light: #DCE9F2;
            --bg: #F7FAFD;
            --card-bg: #FFFFFF;
            --text-main: #142B3C;
            --text-body: #34495E;
            --text-muted: #6C8298;
            --border: #E1EAF2;
            --border-input: #D6E2ED;
            --accent: #C9A14F;
            --accent-light: #F5EFE0;
            --shadow: 0 10px 30px rgba(28,60,90,0.08);
            --shadow-hover: 0 16px 40px rgba(28,60,90,0.14);
            --radius: 16px;
            --radius-sm: 10px;
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 32px;
            --space-5: 48px;
            --space-6: 64px;
            --max-width: 1200px;
            --transition: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            background: #EEF3F8;
            border-radius: var(--radius-sm);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: transparent;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-3);
        }
        .section {
            padding: var(--space-6) 0;
        }
        .section--alt {
            background: #F0F5FA;
        }
        .section-header {
            margin-bottom: var(--space-4);
        }
        .section-header h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: var(--space-2);
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }
        .tag--accent {
            background: var(--accent-light);
            color: #8A6D2F;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
        }
        .btn--primary {
            background: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(46,111,163,0.25);
        }
        .btn--primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(31,86,130,0.3);
        }
        .btn--outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn--outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn--sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn--lg {
            padding: 14px 36px;
            font-size: 16px;
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        #site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition), padding var(--transition);
        }
        #site-header.scrolled {
            box-shadow: 0 4px 20px rgba(28,60,90,0.1);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-2) 0;
            gap: var(--space-2);
            transition: padding var(--transition);
        }
        #site-header.scrolled .header-brand-row {
            padding: 6px 0;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 14px;
            gap: 8px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .search-box input {
            width: 140px;
            font-size: 14px;
            color: var(--text-main);
            background: transparent;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            color: var(--text-muted);
        }
        .header-nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-1) 0 var(--space-2);
            gap: var(--space-2);
            transition: all var(--transition);
        }
        #site-header.scrolled .header-nav-row {
            padding: 4px 0 8px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: #FFFFFF;
            background: var(--primary);
            font-weight: 600;
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            flex-shrink: 0;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--primary-light);
        }
        .hamburger span {
            width: 22px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: var(--space-2) 0 var(--space-3);
            gap: var(--space-1);
            border-top: 1px solid var(--border);
        }
        .mobile-nav a {
            padding: 10px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
        }
        .mobile-nav a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .mobile-nav a.active {
            background: var(--primary);
            color: #FFFFFF;
        }
        main {
            min-height: 60vh;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: var(--space-3);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--primary-dark);
            font-weight: 500;
        }
        .category-hero {
            padding: var(--space-5) 0 var(--space-4);
            background: linear-gradient(180deg, #FFFFFF 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
        }
        .category-hero-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: var(--space-5);
            align-items: center;
        }
        .category-hero h1 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: var(--space-2);
        }
        .category-hero .sub {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.85;
            max-width: 560px;
        }
        .category-hero .meta-row {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            margin-top: var(--space-3);
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 16px;
        }
        .hero-stat strong {
            color: var(--accent);
            font-size: 16px;
        }
        .category-hero-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            aspect-ratio: 4/3;
        }
        .category-hero-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
        }
        .filter-bar {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            flex-wrap: wrap;
            padding: var(--space-3) 0;
            border-bottom: 1px solid var(--border);
            margin-bottom: var(--space-4);
        }
        .filter-bar .label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            flex-shrink: 0;
        }
        .filter-chip {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text-body);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-chip.selected {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
            font-weight: 600;
        }
        .info-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--space-3);
        }
        .info-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }
        .info-card .card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #EEF3F8;
        }
        .info-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition);
        }
        .info-card:hover .card-img img {
            transform: scale(1.04);
        }
        .info-card .card-body {
            padding: var(--space-3);
            display: flex;
            flex-direction: column;
            gap: var(--space-1);
            flex: 1;
        }
        .info-card .card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: 0;
        }
        .info-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .info-card .card-meta {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
        }
        .info-card .card-meta .cat {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: var(--space-2);
        }
        .gallery-grid figure {
            margin: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/3;
            background: #EEF3F8;
        }
        .gallery-grid figure img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform var(--transition);
        }
        .gallery-grid figure:hover img {
            transform: scale(1.05);
        }
        .gallery-grid figcaption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px 12px 10px;
            font-size: 12px;
            color: #FFFFFF;
            background: linear-gradient(transparent, rgba(20,43,60,0.75));
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        }
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-3);
        }
        .news-item {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: var(--space-3);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .news-item .news-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #EEF3F8;
            min-height: 100%;
        }
        .news-item .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .news-item .news-body {
            padding: var(--space-3);
            display: flex;
            flex-direction: column;
            gap: var(--space-1);
        }
        .news-item .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: 0;
        }
        .news-item .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
        }
        .news-item .news-meta .cat {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }
        .empty-state {
            text-align: center;
            padding: var(--space-5) var(--space-3);
            background: var(--card-bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            color: var(--text-muted);
            font-size: 15px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: var(--space-3);
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: var(--space-3);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: var(--space-1);
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .related-card h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
        }
        .related-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item summary {
            padding: var(--space-3);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-2);
            list-style: none;
            outline: none;
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item summary .arrow {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 14px;
            transition: transform var(--transition);
        }
        .faq-item[open] summary .arrow {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 var(--space-3) var(--space-3);
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius);
            padding: var(--space-5);
            box-shadow: 0 16px 40px rgba(46,111,163,0.25);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-5);
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            right: 100px;
            bottom: -100px;
            width: 200px;
            height: 200px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }
        .cta-banner > * {
            position: relative;
            z-index: 1;
        }
        .cta-banner h2 {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.4;
            margin-bottom: var(--space-2);
        }
        .cta-banner p {
            font-size: 15px;
            color: rgba(255,255,255,0.85);
            line-height: 1.8;
        }
        .cta-banner .cta-actions {
            display: flex;
            gap: var(--space-2);
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .cta-banner .btn--light {
            background: #FFFFFF;
            color: var(--primary);
            border: none;
        }
        .cta-banner .btn--light:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-4);
        }
        .contact-info-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-4);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .contact-info-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
        }
        .contact-info-card .contact-line {
            display: flex;
            align-items: flex-start;
            gap: var(--space-2);
            font-size: 14px;
            color: var(--text-body);
        }
        .contact-info-card .contact-line svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            color: var(--primary);
            margin-top: 4px;
        }
        .consult-form-wrap {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-4);
            box-shadow: var(--shadow);
        }
        .consult-form-wrap h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: var(--space-3);
        }
        .form-group {
            margin-bottom: var(--space-2);
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .form-control {
            width: 100%;
            padding: 10px 16px;
            border: 1.5px solid var(--border-input);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-main);
            background: #FFFFFF;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
            outline: none;
        }
        .form-control.error {
            border-color: #E35D6A;
            box-shadow: 0 0 0 3px rgba(227,93,106,0.15);
        }
        .form-control.success {
            border-color: #4CAF50;
        }
        .form-error-msg {
            display: none;
            font-size: 12px;
            color: #E35D6A;
            margin-top: 4px;
        }
        .form-error-msg.visible {
            display: block;
        }
        .form-success-msg {
            display: none;
            padding: var(--space-3);
            background: #E8F5E9;
            color: #2E7D32;
            border-radius: var(--radius-sm);
            font-size: 14px;
            margin-top: var(--space-2);
            text-align: center;
        }
        .form-success-msg.visible {
            display: block;
        }
        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }
        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C8298' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }
        footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: var(--space-6) 0 var(--space-3);
            margin-top: var(--space-5);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-4);
            margin-bottom: var(--space-4);
        }
        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: var(--space-2);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand h3 .brand-icon {
            width: 28px;
            height: 28px;
            font-size: 13px;
            border-radius: 7px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: var(--space-2);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: var(--space-1);
        }
        .footer-col ul li {
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 14px;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: var(--space-3);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .category-hero-img {
                aspect-ratio: 16/7;
            }
            .cta-banner {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
            .cta-banner .cta-actions {
                justify-content: flex-start;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .header-nav-row {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav.open {
                display: flex;
            }
            .section {
                padding: var(--space-5) 0;
            }
            .news-item {
                grid-template-columns: 1fr;
            }
            .news-item .news-img {
                aspect-ratio: 16/7;
                min-height: auto;
            }
            .info-card-grid {
                grid-template-columns: 1fr 1fr;
            }
            .gallery-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .info-card-grid {
                grid-template-columns: 1fr;
            }
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .filter-bar {
                gap: var(--space-1);
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 12px;
            }
            .search-box input {
                width: 80px;
            }
            .header-brand-row {
                flex-wrap: wrap;
            }
            .brand {
                font-size: 17px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: var(--space-3);
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2E6FA3;
            --primary-dark: #1F5682;
            --primary-light: #DCE9F2;
            --bg: #F7FAFD;
            --card-bg: #FFFFFF;
            --text-main: #142B3C;
            --text-body: #34495E;
            --text-muted: #6C8298;
            --border: #E1EAF2;
            --border-input: #D6E2ED;
            --accent: #C9A14F;
            --accent-light: #F5EFE0;
            --shadow: 0 10px 30px rgba(28,60,90,0.08);
            --radius: 16px;
            --radius-sm: 10px;
            --space-1: 8px;
            --space-2: 16px;
            --space-3: 24px;
            --space-4: 32px;
            --space-5: 48px;
            --space-6: 64px;
            --max-width: 1200px;
            --transition: 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            background: #EEF3F8;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-3);
        }
        .section {
            padding: var(--space-6) 0;
        }
        .section--alt {
            background: #F0F5FA;
        }
        .section-header {
            margin-bottom: var(--space-4);
        }
        .section-header h2 {
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: var(--space-2);
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.8;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            letter-spacing: 0.02em;
        }
        .tag--accent {
            background: var(--accent-light);
            color: #8A6D2F;
        }
        .tag--solid {
            background: var(--primary);
            color: #FFFFFF;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            line-height: 1.4;
            border: none;
        }
        .btn--primary {
            background: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(46,111,163,0.25);
        }
        .btn--primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(31,86,130,0.3);
        }
        .btn--outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn--outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn--sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn--lg {
            padding: 14px 36px;
            font-size: 16px;
        }
        .btn:active {
            transform: translateY(0);
        }

        /* Header */
        #site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition), padding var(--transition);
        }
        #site-header.scrolled {
            box-shadow: 0 4px 20px rgba(28,60,90,0.1);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-2) 0;
            gap: var(--space-2);
            flex-wrap: wrap;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .brand:hover {
            color: var(--primary);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--space-2);
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 14px;
            gap: 8px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46,111,163,0.12);
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-body);
            width: 140px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box .fa-search {
            color: var(--text-muted);
            font-size: 13px;
        }
        .header-nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 6px 0 var(--space-2);
            gap: var(--space-2);
            flex-wrap: wrap;
            border-top: 1px solid var(--border);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 4px 2px;
            position: relative;
            transition: color var(--transition);
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-cta {
            display: flex;
            align-items: center;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            padding: 4px 8px;
        }
        @media (max-width: 768px) {
            .header-brand-row {
                flex-wrap: nowrap;
            }
            .search-box input {
                width: 100px;
            }
            .header-nav-row {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--space-1);
            }
            .main-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                width: 100%;
            }
            .main-nav a {
                display: block;
                width: 100%;
                padding: 6px 0;
            }
            .mobile-toggle {
                display: block;
            }
            .header-nav-row.mobile-collapsed {
                display: none;
            }
            .header-nav-row.mobile-open {
                display: flex;
            }
            .header-cta {
                width: 100%;
            }
            .header-cta .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* Breadcrumb + Category Hero */
        .cat-hero {
            padding: var(--space-5) 0 var(--space-4);
            background: linear-gradient(180deg, #FFFFFF 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: var(--space-2);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .cat-hero h1 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: var(--space-2);
        }
        .cat-hero .lead {
            font-size: 16px;
            color: var(--text-body);
            max-width: 760px;
            line-height: 1.8;
        }
        .cat-hero .hero-meta {
            display: flex;
            gap: var(--space-3);
            margin-top: var(--space-3);
            flex-wrap: wrap;
        }
        .cat-hero .hero-meta span {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .cat-hero .hero-meta .fa-circle {
            font-size: 5px;
            color: var(--accent);
        }

        /* Stats Board */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-3);
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: var(--space-3);
            box-shadow: var(--shadow);
            text-align: center;
        }
        .stat-card .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .stat-card .stat-icon {
            font-size: 24px;
            color: var(--accent);
            margin-bottom: var(--space-2);
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-2);
            }
            .stat-card .stat-number {
                font-size: 24px;
            }
        }

        /* Review Cards */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-3);
        }
        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(28,60,90,0.12);
        }
        .review-card .review-body {
            padding: var(--space-3);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .review-card .review-rating {
            color: var(--accent);
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: var(--space-2);
        }
        .review-card .review-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: var(--space-2);
            line-height: 1.4;
        }
        .review-card .review-text {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            flex: 1;
        }
        .review-card .review-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: var(--space-3);
            padding-top: var(--space-2);
            border-top: 1px solid var(--border);
        }
        .review-card .review-author {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .review-card .review-author .author-avatar {
            width: 28px;
            height: 28px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary-dark);
            font-weight: 600;
        }
        .review-card .review-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        @media (max-width: 1024px) {
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .review-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Gallery */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-2);
        }
        .gallery-grid img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .gallery-grid img:hover {
            transform: scale(1.03);
            box-shadow: 0 8px 24px rgba(28,60,90,0.15);
        }
        @media (max-width: 1024px) {
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 640px) {
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* News List */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: var(--space-2);
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(28,60,90,0.04);
        }
        .news-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .news-item img {
            width: 120px;
            height: 80px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .news-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: var(--space-2);
            align-items: center;
        }
        @media (max-width: 640px) {
            .news-item img {
                width: 80px;
                height: 60px;
            }
            .news-item {
                flex-direction: row;
                align-items: flex-start;
            }
        }

        /* Quick QA */
        .qa-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
        }
        .qa-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: var(--space-3);
            display: flex;
            gap: var(--space-2);
            align-items: flex-start;
        }
        .qa-item .qa-index {
            width: 28px;
            height: 28px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
            color: var(--primary-dark);
            flex-shrink: 0;
        }
        .qa-item .qa-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .qa-item .qa-content p {
            font-size: 14px;
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
        }

        /* CTA Form */
        .cta-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: var(--space-4);
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: var(--space-4);
        }
        .cta-box .cta-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: var(--space-2);
        }
        .cta-box .cta-info p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .form-group {
            margin-bottom: var(--space-2);
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 4px;
        }
        .form-control {
            width: 100%;
            border: 1.5px solid var(--border-input);
            border-radius: 10px;
            padding: 10px 16px;
            font-size: 14px;
            color: var(--text-body);
            background: #FFFFFF;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46,111,163,0.12);
        }
        .form-control.error {
            border-color: #D64545;
        }
        .form-control.success {
            border-color: #3BAE6A;
        }
        textarea.form-control {
            resize: vertical;
            min-height: 90px;
        }
        select.form-control {
            appearance: auto;
        }
        .form-hint {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .form-error-text {
            font-size: 12px;
            color: #D64545;
            margin-top: 2px;
            display: none;
        }
        .form-error-text.show {
            display: block;
        }
        .form-success-msg {
            display: none;
            font-size: 14px;
            color: #3BAE6A;
            font-weight: 600;
            padding: 10px 16px;
            background: #EAF7F0;
            border-radius: 10px;
            margin-top: var(--space-2);
        }
        .form-success-msg.show {
            display: block;
        }
        @media (max-width: 768px) {
            .cta-box {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
        }

        /* Contact */
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-3);
        }
        .contact-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: var(--space-3);
            text-align: center;
            box-shadow: 0 4px 14px rgba(28,60,90,0.04);
        }
        .contact-card .contact-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: var(--space-2);
        }
        .contact-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .contact-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }
        @media (max-width: 768px) {
            .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Footer */
        footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: var(--space-5) 0 var(--space-2);
            margin-top: var(--space-4);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--space-4);
            margin-bottom: var(--space-4);
        }
        .footer-brand h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: var(--space-2);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: var(--space-2);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: var(--space-2);
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-3);
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}