/* roulang page: index */
:root {
            --primary: #1B7A3D;
            --primary-dark: #0F5B2B;
            --primary-light: #E8F5EE;
            --primary-deep: #0A3D1F;
            --accent: #F5A623;
            --accent-light: #FFF3DF;
            --bg: #F6F8FA;
            --surface: #FFFFFF;
            --text: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
            --transition: 0.25s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-num: "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
            --container-width: 1180px;
            --section-gap: 4.5rem;
            --section-gap-mobile: 2.5rem;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 3px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 1rem;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 0.75rem 0;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .nav-logo .logo-text span {
            color: var(--primary);
        }

        .nav-search {
            flex: 1 1 auto;
            min-width: 200px;
            display: flex;
            align-items: center;
            position: relative;
            order: 2;
        }

        .nav-search input {
            width: 100%;
            border: 2px solid var(--border);
            border-radius: 999px;
            padding: 0.6rem 1rem 0.6rem 2.8rem;
            font-size: 0.95rem;
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
            color: var(--text);
        }

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

        .nav-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
            background: #fff;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 1rem;
            color: var(--text-muted);
            pointer-events: none;
            font-size: 0.95rem;
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 0.4rem;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .nav-hamburger:hover {
            background: var(--primary-light);
        }

        .nav-hamburger:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-menu-wrapper {
            width: 100%;
            order: 3;
            display: flex;
            align-items: center;
            justify-content: flex-start;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu > li {
            margin: 0;
            padding: 0;
        }

        .nav-menu > li > a {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-menu > li > a:hover,
        .nav-menu > li > a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-menu > li > a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
        }

        /* ========== Sections general ========== */
        main {
            display: block;
        }

        .section {
            padding: var(--section-gap) 0;
        }

        .section--alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section--dark {
            background: var(--primary-deep);
            color: #fff;
        }

        .section-head {
            margin-bottom: 2.25rem;
            max-width: 720px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.3rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 0.75rem;
        }

        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            letter-spacing: -0.5px;
            margin-bottom: 0.75rem;
        }

        .section-head p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .section--dark .section-head h2 {
            color: #fff;
        }

        .section--dark .section-head p {
            color: rgba(255,255,255,0.75);
        }

        .section--dark .section-head .section-tag {
            background: rgba(255,255,255,0.15);
            color: var(--accent);
        }

        /* ========== Hero / 指标看板 ========== */
        .hero-dashboard {
            background: linear-gradient(145deg, var(--primary-deep) 0%, #0D4B27 40%, #165830 100%);
            color: #fff;
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
        }

        .hero-dashboard::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(245,166,35,0.15) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-dashboard::before {
            content: '';
            position: absolute;
            bottom: -180px;
            left: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(27,122,61,0.35) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            font-size: 0.82rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }

        .hero-breadcrumb a {
            color: rgba(255,255,255,0.6);
        }

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

        .hero-title {
            font-size: 2.35rem;
            font-weight: 700;
            letter-spacing: -1px;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }

        .hero-title .highlight {
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 1.08rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .hero-metric-card {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius);
            padding: 1.1rem 1.25rem;
            backdrop-filter: blur(4px);
            transition: background var(--transition), transform var(--transition);
        }

        .hero-metric-card:hover {
            background: rgba(255,255,255,0.14);
            transform: translateY(-2px);
        }

        .hero-metric-label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.65);
            letter-spacing: 0.6px;
            text-transform: uppercase;
            margin-bottom: 0.4rem;
        }

        .hero-metric-value {
            font-size: 1.65rem;
            font-weight: 700;
            font-family: var(--font-num);
            letter-spacing: -0.5px;
            color: #fff;
            line-height: 1.2;
        }

        .hero-metric-value .unit {
            font-size: 0.85rem;
            font-weight: 400;
            color: rgba(255,255,255,0.6);
            margin-left: 2px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.85rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent);
            color: #1a1a1a;
            border-color: var(--accent);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: #E89A15;
            border-color: #E89A15;
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(245,166,35,0.35);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.45);
        }

        .btn-outline-light:hover,
        .btn-outline-light:focus {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

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

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(27,122,61,0.28);
        }

        .btn-lg {
            padding: 0.9rem 1.85rem;
            font-size: 1rem;
        }

        /* ========== 服务矩阵 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .service-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
            gap: 0.65rem;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .service-card:hover::before {
            opacity: 1;
        }

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

        .service-card .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
        }

        .service-icon--green {
            background: var(--primary);
        }
        .service-icon--orange {
            background: var(--accent);
            color: #1a1a1a;
        }
        .service-icon--teal {
            background: #0F766E;
        }
        .service-icon--blue {
            background: #3B5BDB;
        }
        .service-icon--red {
            background: #C44A4A;
        }
        .service-icon--purple {
            background: #6D4AC4;
        }

        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .service-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        .service-card .service-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
            align-self: flex-start;
        }

        /* ========== 结果对比表格 ========== */
        .compare-wrapper {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .compare-table-wrap {
            overflow-x: auto;
            padding: 0;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
            margin: 0;
        }

        .compare-table thead th {
            background: var(--primary-deep);
            color: #fff;
            font-weight: 600;
            font-size: 0.88rem;
            padding: 0.9rem 1.2rem;
            text-align: left;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .compare-table tbody td {
            padding: 0.9rem 1.2rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
            font-family: var(--font-num);
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr:hover td {
            background: var(--primary-light);
        }

        .compare-table .prob-high {
            font-weight: 700;
            color: var(--primary);
        }

        .compare-table .prob-mid {
            font-weight: 600;
            color: var(--accent);
        }

        .compare-note {
            background: #F9FAFB;
            padding: 1rem 1.5rem;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .compare-note i {
            color: var(--accent);
        }

        /* ========== 里程碑 ========== */
        .timeline {
            position: relative;
            padding-left: 1.5rem;
            list-style: none;
            margin: 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--border);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-left: 1.8rem;
            margin-bottom: 1.8rem;
            padding-bottom: 0.5rem;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -1.5rem;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--primary-light);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.15);
            z-index: 1;
        }

        .timeline-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.35rem;
            letter-spacing: -0.2px;
        }

        .timeline-item .timeline-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-family: var(--font-num);
            display: block;
            margin-bottom: 0.35rem;
        }

        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        /* ========== 资讯列表 ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .news-card .news-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #E9ECEF;
        }

        .news-card .news-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
            loading: lazy;
        }

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

        .news-card .news-body {
            padding: 1.25rem 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }

        .news-card .news-tag {
            display: inline-block;
            background: var(--accent-light);
            color: #8A6A00;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.25rem 0.7rem;
            border-radius: 4px;
            align-self: flex-start;
        }

        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            line-height: 1.45;
            letter-spacing: -0.3px;
        }

        .news-card h3 a {
            color: var(--text);
            transition: color var(--transition);
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-card .news-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-top: auto;
            padding-top: 0.5rem;
        }

        /* ========== 平台保障 ========== */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .assurance-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.4rem 1.25rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .assurance-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .assurance-item .assurance-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin: 0 auto 0.85rem;
        }

        .assurance-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.4rem;
        }

        .assurance-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow-sm);
        }

        .brand-intro h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 1.2rem;
            letter-spacing: -0.5px;
        }

        .brand-intro p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 1rem;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        .brand-intro .brand-highlight {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== 快速解答 ========== */
        .quick-qa-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

        .quick-qa-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.35rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .quick-qa-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .quick-qa-card h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .quick-qa-card h4 i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        .quick-qa-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        /* ========== FAQ Accordion ========== */
        .accordion {
            list-style: none;
            margin: 0;
            padding: 0;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--surface);
        }

        .accordion-item {
            border-bottom: 1px solid var(--border);
        }

        .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            background: #fff;
            transition: background var(--transition), color var(--transition);
            gap: 1rem;
            line-height: 1.45;
        }

        .accordion-title:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .accordion-title .accordion-toggle {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform 0.3s ease, color var(--transition);
        }

        .accordion-item.is-active .accordion-title .accordion-toggle {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .accordion-content {
            display: none;
            padding: 0 1.5rem 1.25rem;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .accordion-item.is-active .accordion-content {
            display: block;
        }

        /* ========== 转化表单 ========== */
        .calc-form-wrapper {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .calc-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .calc-form-left {
            padding: 2rem 2.25rem;
            background: #fff;
        }

        .calc-form-left h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5rem;
            letter-spacing: -0.4px;
        }

        .calc-form-left p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        .form-group {
            margin-bottom: 1.2rem;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.4rem;
            letter-spacing: 0.3px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            color: var(--text);
            background: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.1);
        }

        .form-group input.error {
            border-color: #C0392B;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        .calc-form-right {
            padding: 2rem 2.25rem;
            background: var(--primary-deep);
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .calc-form-right h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 0.75rem;
            letter-spacing: -0.2px;
        }

        .calc-preview-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.7rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.15);
            font-size: 0.9rem;
        }

        .calc-preview-row:last-child {
            border-bottom: none;
        }

        .calc-preview-row .preview-label {
            color: rgba(255,255,255,0.7);
        }

        .calc-preview-row .preview-value {
            font-weight: 700;
            font-family: var(--font-num);
            color: #fff;
            font-size: 1.05rem;
        }

        .calc-preview-row .preview-value.win {
            color: var(--accent);
        }
        .calc-preview-row .preview-value.draw {
            color: #A8D5BA;
        }
        .calc-preview-row .preview-value.lose {
            color: #F0A8A8;
        }

        .calc-form-note {
            margin-top: 0.75rem;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.55);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        /* ========== 术语解释 ========== */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .glossary-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.4rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .glossary-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .glossary-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.2px;
        }

        .glossary-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        /* ========== 适用场景 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .scenario-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.4rem 1.5rem;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .scenario-card .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin: 0 auto 0.8rem;
        }

        .scenario-card h4 {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.4rem;
        }

        .scenario-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255,255,255,0.75);
            padding: 3.5rem 0 1.5rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }

        .footer-brand .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1a1a1a;
            font-weight: 700;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .footer-brand .footer-logo span {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 0.75rem;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 0.6rem;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.7);
            font-size: 0.85rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8rem;
        }

        .footer-bottom .footer-copy {
            color: rgba(255,255,255,0.55);
        }

        .footer-bottom .footer-disclaimer {
            color: rgba(255,255,255,0.45);
            font-size: 0.78rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .footer-bottom .footer-disclaimer i {
            color: var(--accent);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .assurance-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .quick-qa-grid {
                grid-template-columns: 1fr;
            }

            .calc-form-grid {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            :root {
                --section-gap: 3rem;
                --section-gap-mobile: 2.25rem;
            }

            .header-inner {
                flex-wrap: nowrap;
                gap: 0.5rem;
            }

            .nav-search {
                order: 2;
                flex: 1 1 auto;
                min-width: 100px;
            }

            .nav-hamburger {
                display: block;
                order: 3;
                flex-shrink: 0;
            }

            .nav-menu-wrapper {
                display: none;
                order: 4;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.5rem;
                border-top: 1px solid var(--border);
                margin-top: 0.5rem;
            }

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

            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 0;
            }

            .nav-menu > li > a {
                display: block;
                padding: 0.75rem 0.5rem;
                border-bottom: 1px solid var(--border);
                border-radius: 0;
            }

            .nav-menu > li:last-child > a {
                border-bottom: none;
            }

            .hero-dashboard {
                padding: 2.25rem 0 2rem;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }

            .hero-metric-card {
                padding: 0.85rem 1rem;
            }

            .hero-metric-value {
                font-size: 1.35rem;
            }

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

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

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

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

            .section-head h2 {
                font-size: 1.45rem;
            }

            .brand-intro {
                padding: 1.75rem 1.5rem;
            }

            .calc-form-left,
            .calc-form-right {
                padding: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }

            .nav-logo .logo-text {
                font-size: 0.95rem;
            }

            .nav-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }

            .hero-title {
                font-size: 1.55rem;
                letter-spacing: -0.5px;
            }

            .hero-metrics {
                grid-template-columns: 1fr;
            }

            .btn-lg {
                padding: 0.75rem 1.4rem;
                font-size: 0.92rem;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .form-row {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #1B7A3D;
        --primary-dark: #0F5B2B;
        --primary-light: #E8F5EE;
        --primary-deep: #0A3D1F;
        --accent: #F5A623;
        --accent-light: #FFF3DF;
        --bg: #F6F8FA;
        --surface: #FFFFFF;
        --text: #1F2937;
        --text-secondary: #4B5563;
        --text-muted: #6B7280;
        --border: #E5E7EB;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 16px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
        --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
        --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
        --transition: 0.25s ease;
        --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        --font-num: "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
        --container-width: 1180px;
        --section-gap: 4.5rem;
        --section-gap-mobile: 2.5rem;
    }
    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }
    body {
        font-family: var(--font);
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        min-height: 100vh;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover,
    a:focus {
        color: var(--primary-dark);
        text-decoration: none;
    }
    a:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
        border-radius: 3px;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    select,
    textarea {
        font-family: var(--font);
        font-size: 1rem;
    }
    .container {
        max-width: var(--container-width);
        margin: 0 auto;
        padding: 0 1.5rem;
    }
    /* ========== Header / Nav ========== */
    .site-header {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    }
    .header-inner {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.75rem;
        padding: 0.75rem 0;
    }
    .nav-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        flex-shrink: 0;
    }
    .nav-logo .logo-icon {
        width: 38px;
        height: 38px;
        background: var(--primary);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.2rem;
        font-weight: 700;
        letter-spacing: -0.5px;
        flex-shrink: 0;
    }
    .nav-logo .logo-text {
        font-size: 1.12rem;
        font-weight: 700;
        color: var(--text);
        white-space: nowrap;
        letter-spacing: -0.3px;
    }
    .nav-logo .logo-text span {
        color: var(--primary);
    }
    .nav-search {
        flex: 1 1 auto;
        min-width: 200px;
        display: flex;
        align-items: center;
        position: relative;
        order: 2;
    }
    .nav-search input {
        width: 100%;
        border: 2px solid var(--border);
        border-radius: 999px;
        padding: 0.6rem 1rem 0.6rem 2.8rem;
        font-size: 0.95rem;
        background: var(--bg);
        transition: border-color var(--transition), box-shadow var(--transition);
        color: var(--text);
    }
    .nav-search input::placeholder {
        color: var(--text-muted);
    }
    .nav-search input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
        background: #fff;
    }
    .nav-search .search-icon {
        position: absolute;
        left: 1rem;
        color: var(--text-muted);
        pointer-events: none;
        font-size: 0.95rem;
    }
    .nav-hamburger {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--text);
        cursor: pointer;
        padding: 0.4rem;
        border-radius: 6px;
        transition: background var(--transition);
    }
    .nav-hamburger:hover {
        background: var(--primary-light);
    }
    .nav-hamburger:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
    }
    .nav-menu-wrapper {
        width: 100%;
        order: 3;
        display: flex;
        align-items: center;
        justify-content: flex-start;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 0.15rem;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: wrap;
    }
    .nav-menu > li {
        margin: 0;
        padding: 0;
    }
    .nav-menu > li > a {
        display: inline-block;
        padding: 0.5rem 0.9rem;
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: 6px;
        transition: color var(--transition), background var(--transition);
        white-space: nowrap;
    }
    .nav-menu > li > a:hover,
    .nav-menu > li > a:focus {
        color: var(--primary);
        background: var(--primary-light);
    }
    .nav-menu > li > a.active {
        color: #fff;
        background: var(--primary);
        font-weight: 600;
    }
    /* ========== Main / Section Common ========== */
    main {
        display: block;
    }
    .section {
        padding: var(--section-gap) 0;
    }
    .section-alt {
        background: var(--surface);
    }
    .section-deep {
        background: linear-gradient(145deg, #0A3D1F 0%, #0F5B2B 55%, #1B7A3D 100%);
        color: #fff;
    }
    .section-head {
        margin-bottom: 2rem;
    }
    .section-title {
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 0.5rem;
        letter-spacing: -0.3px;
        line-height: 1.4;
    }
    .section-subtitle {
        font-size: 1rem;
        color: var(--text-secondary);
        margin-bottom: 0;
        max-width: 680px;
    }
    .section-deep .section-title {
        color: #fff;
    }
    .section-deep .section-subtitle {
        color: rgba(255,255,255,0.82);
    }
    /* ========== Breadcrumb ========== */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.75);
        margin-bottom: 1rem;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: rgba(255,255,255,0.85);
        transition: color var(--transition);
    }
    .breadcrumb a:hover {
        color: #fff;
    }
    .breadcrumb i {
        font-size: 0.7rem;
        color: rgba(255,255,255,0.5);
    }
    .breadcrumb .current {
        color: var(--accent);
        font-weight: 600;
    }
    /* ========== Category Hero ========== */
    .category-hero {
        background: linear-gradient(145deg, #0A3D1F 0%, #0F5B2B 55%, #1B7A3D 100%);
        color: #fff;
        padding: 3.5rem 0;
        position: relative;
        overflow: hidden;
    }
    .category-hero::before {
        content: "";
        position: absolute;
        right: -120px;
        top: -80px;
        width: 420px;
        height: 420px;
        border-radius: 50%;
        background: rgba(27,122,61,0.22);
        pointer-events: none;
    }
    .category-hero::after {
        content: "";
        position: absolute;
        right: 140px;
        bottom: -160px;
        width: 320px;
        height: 320px;
        border-radius: 50%;
        background: rgba(245,166,35,0.12);
        pointer-events: none;
    }
    .category-hero .container {
        position: relative;
        z-index: 1;
    }
    .category-hero-grid {
        display: grid;
        grid-template-columns: 1.15fr 0.85fr;
        gap: 3rem;
        align-items: center;
    }
    .category-hero h1 {
        font-size: 2.1rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 1rem;
        letter-spacing: -0.4px;
        line-height: 1.35;
    }
    .category-hero p {
        font-size: 1.05rem;
        color: rgba(255,255,255,0.86);
        margin-bottom: 0;
        max-width: 540px;
        line-height: 1.8;
    }
    .hero-stats-panel {
        background: rgba(255,255,255,0.08);
        border: 1px solid rgba(255,255,255,0.14);
        border-radius: var(--radius-lg);
        padding: 1.5rem;
        backdrop-filter: blur(8px);
    }
    .hero-stats-panel .hsp-title {
        font-size: 0.9rem;
        text-transform: uppercase;
        letter-spacing: 1.5px;
        color: rgba(255,255,255,0.7);
        margin-bottom: 1rem;
        font-weight: 600;
    }
    .hsp-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.7rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .hsp-row:last-child {
        border-bottom: none;
    }
    .hsp-label {
        font-size: 0.93rem;
        color: rgba(255,255,255,0.78);
    }
    .hsp-value {
        font-family: var(--font-num);
        font-weight: 700;
        font-size: 1.05rem;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .hsp-badge {
        display: inline-block;
        background: var(--accent);
        color: #1F2937;
        font-size: 0.75rem;
        font-weight: 700;
        padding: 0.15rem 0.55rem;
        border-radius: 999px;
    }
    /* ========== Filter Bar ========== */
    .filter-bar {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 0.75rem 1rem;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        flex-wrap: wrap;
        box-shadow: var(--shadow-sm);
    }
    .filter-label {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--text-secondary);
        white-space: nowrap;
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }
    .filter-tabs {
        display: flex;
        gap: 0.4rem;
        flex-wrap: wrap;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .filter-tabs li {
        margin: 0;
        padding: 0;
    }
    .filter-tabs button {
        background: transparent;
        border: 1px solid var(--border);
        border-radius: 999px;
        padding: 0.35rem 0.85rem;
        font-size: 0.85rem;
        color: var(--text-secondary);
        cursor: pointer;
        transition: all var(--transition);
        font-weight: 500;
    }
    .filter-tabs button:hover {
        border-color: var(--primary);
        color: var(--primary);
    }
    .filter-tabs button.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        font-weight: 600;
    }
    .filter-sort {
        margin-left: auto;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.85rem;
        color: var(--text-muted);
    }
    .filter-sort select {
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 0.35rem 0.6rem;
        font-size: 0.85rem;
        background: var(--surface);
        color: var(--text);
        cursor: pointer;
    }
    .filter-sort select:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 2px rgba(27,122,61,0.12);
    }
    /* ========== Article Cards List ========== */
    .article-list {
        display: flex;
        flex-direction: column;
        gap: 1.25rem;
    }
    .article-card {
        display: grid;
        grid-template-columns: 220px 1fr;
        gap: 0;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition);
    }
    .article-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-2px);
    }
    .article-thumb {
        width: 220px;
        min-height: 150px;
        background-size: cover;
        background-position: center;
        display: block;
    }
    .article-body {
        padding: 1.25rem 1.5rem;
        display: flex;
        flex-direction: column;
        gap: 0.4rem;
    }
    .article-tags {
        display: flex;
        gap: 0.4rem;
        flex-wrap: wrap;
        margin-bottom: 0.2rem;
    }
    .article-tag {
        font-size: 0.72rem;
        font-weight: 600;
        background: var(--primary-light);
        color: var(--primary);
        padding: 0.2rem 0.6rem;
        border-radius: 999px;
        letter-spacing: 0.3px;
    }
    .article-title-link {
        font-size: 1.12rem;
        font-weight: 700;
        color: var(--text);
        line-height: 1.45;
        letter-spacing: -0.2px;
        transition: color var(--transition);
        display: inline-block;
    }
    .article-title-link:hover {
        color: var(--primary);
    }
    .article-summary {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.65;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 0;
    }
    .article-meta {
        display: flex;
        align-items: center;
        gap: 1rem;
        font-size: 0.82rem;
        color: var(--text-muted);
        margin-top: auto;
    }
    .article-meta i {
        margin-right: 0.3rem;
        color: var(--text-muted);
    }
    /* ========== Data Summary ========== */
    .data-summary-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
    .data-summary-card {
        background: rgba(255,255,255,0.08);
        border: 1px solid rgba(255,255,255,0.14);
        border-radius: var(--radius);
        padding: 1.5rem 1.25rem;
        text-align: center;
        transition: background var(--transition), border-color var(--transition);
    }
    .data-summary-card:hover {
        background: rgba(255,255,255,0.13);
        border-color: rgba(255,255,255,0.25);
    }
    .data-number {
        font-family: var(--font-num);
        font-size: 2.2rem;
        font-weight: 700;
        color: #fff;
        letter-spacing: -0.5px;
        margin-bottom: 0.25rem;
    }
    .data-number .unit {
        font-size: 1rem;
        font-weight: 500;
        color: rgba(255,255,255,0.7);
        margin-left: 0.15rem;
    }
    .data-label {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.75);
        font-weight: 500;
    }
    /* ========== Category Entry ========== */
    .category-entry-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.25rem;
    }
    .category-entry-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 1.5rem 1.25rem;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        text-decoration: none;
    }
    .category-entry-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
        border-color: var(--primary);
    }
    .ce-icon {
        width: 44px;
        height: 44px;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        margin-bottom: 0.4rem;
    }
    .ce-title {
        font-size: 1.02rem;
        font-weight: 700;
        color: var(--text);
        line-height: 1.4;
    }
    .ce-desc {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 0;
    }
    /* ========== Related Links ========== */
    .related-link-list {
        display: flex;
        flex-direction: column;
        gap: 0.65rem;
    }
    .related-link-item {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 1rem 1.25rem;
        transition: border-color var(--transition), box-shadow var(--transition);
        text-decoration: none;
    }
    .related-link-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-sm);
    }
    .related-link-item i {
        color: var(--primary);
        font-size: 1rem;
        width: 20px;
        text-align: center;
    }
    .related-link-text {
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text);
    }
    /* ========== FAQ Accordion ========== */
    .faq-accordion {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
    }
    .faq-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        transition: border-color var(--transition), box-shadow var(--transition);
    }
    .faq-item:hover {
        border-color: #d1d5db;
    }
    .faq-item.open {
        border-color: var(--primary);
        box-shadow: var(--shadow-md);
    }
    .faq-question {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 1rem 1.25rem;
        cursor: pointer;
        background: none;
        border: none;
        width: 100%;
        text-align: left;
        font-size: 0.98rem;
        font-weight: 600;
        color: var(--text);
        transition: color var(--transition);
        font-family: var(--font);
        line-height: 1.5;
    }
    .faq-question:hover {
        color: var(--primary);
    }
    .faq-question .faq-icon {
        width: 26px;
        height: 26px;
        background: var(--primary-light);
        color: var(--primary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8rem;
        flex-shrink: 0;
        transition: transform var(--transition);
    }
    .faq-item.open .faq-question .faq-icon {
        transform: rotate(45deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 1.25rem;
    }
    .faq-item.open .faq-answer {
        max-height: 200px;
        padding: 0 1.25rem 1.25rem;
    }
    .faq-answer p {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.75;
        margin-bottom: 0;
    }
    /* ========== CTA Subscription ========== */
    .cta-subscribe-card {
        background: linear-gradient(135deg, #0F5B2B 0%, #1B7A3D 100%);
        border-radius: var(--radius-lg);
        padding: 2.5rem;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        align-items: center;
        color: #fff;
    }
    .cta-subscribe-left h3 {
        font-size: 1.4rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 0.6rem;
    }
    .cta-subscribe-left p {
        font-size: 0.95rem;
        color: rgba(255,255,255,0.85);
        margin-bottom: 0;
        line-height: 1.75;
    }
    .cta-subscribe-form {
        display: flex;
        gap: 0.6rem;
        align-items: center;
    }
    .cta-subscribe-form input {
        flex: 1;
        border: none;
        border-radius: 999px;
        padding: 0.7rem 1.25rem;
        font-size: 0.92rem;
        background: rgba(255,255,255,0.95);
        color: var(--text);
    }
    .cta-subscribe-form input:focus {
        outline: 3px solid var(--accent);
        outline-offset: 1px;
    }
    .btn-accent {
        background: var(--accent);
        color: #1F2937;
        border: none;
        border-radius: 999px;
        padding: 0.7rem 1.5rem;
        font-weight: 700;
        font-size: 0.92rem;
        cursor: pointer;
        transition: background var(--transition), transform var(--transition);
        white-space: nowrap;
        box-shadow: 0 3px 10px rgba(245,166,35,0.35);
    }
    .btn-accent:hover {
        background: #E6960D;
        transform: translateY(-1px);
    }
    .btn-accent:focus-visible {
        outline: 3px solid #fff;
        outline-offset: 2px;
    }
    /* ========== Footer ========== */
    .site-footer {
        background: var(--primary-deep);
        color: rgba(255,255,255,0.75);
        padding: 3.5rem 0 1.5rem;
        margin-top: var(--section-gap);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 2.5rem;
        margin-bottom: 2rem;
    }
    .footer-brand .footer-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        margin-bottom: 1rem;
    }
    .footer-logo .logo-icon {
        width: 36px;
        height: 36px;
        background: rgba(255,255,255,0.12);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1rem;
    }
    .footer-logo span {
        font-size: 1.1rem;
        font-weight: 700;
        color: #fff;
    }
    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.75;
        max-width: 280px;
        margin-bottom: 0;
    }
    .footer-col h4 {
        font-size: 0.95rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 1rem;
        letter-spacing: 0.5px;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 0.55rem;
    }
    .footer-col ul li {
        margin: 0;
        padding: 0;
    }
    .footer-col ul li a {
        color: rgba(255,255,255,0.72);
        font-size: 0.9rem;
        transition: color var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
    }
    .footer-col ul li a:hover {
        color: #fff;
    }
    .footer-col ul li a i {
        font-size: 0.65rem;
        color: var(--accent);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.12);
        padding-top: 1.25rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 1rem;
    }
    .footer-copy {
        font-size: 0.82rem;
        color: rgba(255,255,255,0.6);
    }
    .footer-disclaimer {
        font-size: 0.82rem;
        color: rgba(255,255,255,0.55);
        display: flex;
        align-items: center;
        gap: 0.4rem;
    }
    .footer-disclaimer i {
        color: var(--accent);
    }
    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .category-hero-grid {
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .data-summary-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .category-entry-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .cta-subscribe-card {
            grid-template-columns: 1fr;
        }
    }
    @media (max-width: 768px) {
        .nav-hamburger {
            display: block;
        }
        .nav-menu-wrapper {
            display: none;
            flex-direction: column;
            align-items: stretch;
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 0.5rem 0;
        }
        .nav-menu-wrapper.open {
            display: flex;
        }
        .nav-menu {
            flex-direction: column;
            align-items: stretch;
            gap: 0;
        }
        .nav-menu > li > a {
            display: block;
            padding: 0.75rem 1rem;
            border-radius: 0;
        }
        .article-card {
            grid-template-columns: 1fr;
        }
        .article-thumb {
            width: 100%;
            min-height: 200px;
        }
        .filter-bar {
            flex-direction: column;
            align-items: stretch;
            gap: 0.5rem;
        }
        .filter-sort {
            margin-left: 0;
        }
        .section {
            padding: var(--section-gap-mobile) 0;
        }
        .section-title {
            font-size: 1.35rem;
        }
        .category-hero h1 {
            font-size: 1.6rem;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
    }
    @media (max-width: 520px) {
        .data-summary-grid {
            grid-template-columns: 1fr;
        }
        .category-entry-grid {
            grid-template-columns: 1fr;
        }
        .cta-subscribe-form {
            flex-direction: column;
            align-items: stretch;
        }
        .cta-subscribe-card {
            padding: 1.5rem;
        }
        .header-inner {
            gap: 0.5rem;
        }
        .nav-search {
            min-width: 100%;
        }
    }

/* roulang page: category2 */
:root {
            --primary: #1B7A3D;
            --primary-dark: #0F5B2B;
            --primary-light: #E8F5EE;
            --primary-deep: #0A3D1F;
            --accent: #F5A623;
            --accent-light: #FFF3DF;
            --bg: #F6F8FA;
            --surface: #FFFFFF;
            --text: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
            --transition: 0.25s ease;
            --font: "PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
            --font-num: "Roboto","PingFang SC","Microsoft YaHei",sans-serif;
            --container-width: 1180px;
            --section-gap: 3rem;
            --section-gap-mobile: 2.25rem;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 1rem;
        }
        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--surface);
        }
        .section-dark {
            background: var(--primary-deep);
            color: #fff;
        }
        .section-tight {
            padding: 2.5rem 0;
        }
        .section-title {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 1.75rem;
            max-width: 720px;
            line-height: 1.7;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.75);
        }
        .text-accent {
            color: var(--accent) !important;
        }
        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.2px;
            background: var(--primary-light);
            color: var(--primary-dark);
            line-height: 1.6;
            white-space: nowrap;
        }
        .badge-accent {
            background: var(--accent-light);
            color: #8A5A00;
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-muted);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all var(--transition);
            line-height: 1.5;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(27,122,61,0.25);
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: var(--primary-light);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1F2937;
            border-color: var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #E0940F;
            border-color: #E0940F;
            color: #1F2937;
            box-shadow: 0 4px 12px rgba(245,166,35,0.3);
            transform: translateY(-1px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.6);
        }
        .btn-outline-light:hover,
        .btn-outline-light:focus {
            background: rgba(255,255,255,0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
        }
        /* Header / Nav */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 0.75rem 0;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .nav-logo .logo-text {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }
        .nav-logo .logo-text span {
            color: var(--primary);
        }
        .nav-search {
            flex: 1 1 240px;
            min-width: 200px;
            display: flex;
            align-items: center;
            position: relative;
            order: 2;
        }
        .nav-search input {
            width: 100%;
            border: 2px solid var(--border);
            border-radius: 999px;
            padding: 0.6rem 1rem 0.6rem 2.8rem;
            font-size: 0.95rem;
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
            background: #fff;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 1rem;
            color: var(--text-muted);
            pointer-events: none;
            font-size: 0.95rem;
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 0.4rem;
            border-radius: 6px;
            transition: background var(--transition);
            order: 3;
        }
        .nav-hamburger:hover {
            background: var(--primary-light);
        }
        .nav-hamburger:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .nav-menu-wrapper {
            width: 100%;
            order: 4;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            transition: all var(--transition);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-menu>li {
            margin: 0;
            padding: 0;
        }
        .nav-menu>li>a {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .nav-menu>li>a:hover,
        .nav-menu>li>a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu>li>a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 0.5rem 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.85rem;
            flex-wrap: wrap;
        }
        .breadcrumb-nav li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-muted);
        }
        .breadcrumb-nav li a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb-nav li a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav li .sep {
            color: var(--border);
            font-size: 0.7rem;
        }
        .breadcrumb-nav li.current {
            color: var(--primary);
            font-weight: 600;
        }
        /* Category H1 Area */
        .category-head {
            background: var(--surface);
            padding: 2rem 0 1.5rem;
            border-bottom: 1px solid var(--border);
        }
        .category-head h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin: 0.25rem 0 0.5rem;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .category-head .category-desc {
            font-size: 1.02rem;
            color: var(--text-muted);
            margin: 0;
            max-width: 760px;
            line-height: 1.7;
        }
        /* Filter Bar */
        .filter-bar {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 0.75rem 0;
            position: sticky;
            top: 64px;
            z-index: 50;
        }
        .filter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .filter-tabs {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .filter-tab {
            padding: 0.4rem 1.1rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tab:hover,
        .filter-tab:focus {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .filter-sort label {
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
            margin: 0;
        }
        .filter-sort select {
            padding: 0.4rem 1rem;
            border-radius: 6px;
            border: 1px solid var(--border);
            background: var(--bg);
            font-size: 0.85rem;
            color: var(--text);
            cursor: pointer;
            transition: border-color var(--transition);
            min-width: 130px;
        }
        .filter-sort select:focus {
            outline: none;
            border-color: var(--primary);
        }
        /* Tool List */
        .tool-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .tool-card {
            display: flex;
            gap: 1.5rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.25rem;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .tool-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #D1D5DB;
            transform: translateY(-2px);
        }
        .tool-card-img {
            flex-shrink: 0;
            width: 220px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--bg);
        }
        .tool-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .tool-card:hover .tool-card-img img {
            transform: scale(1.04);
        }
        .tool-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            min-width: 0;
        }
        .tool-card-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .tool-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            line-height: 1.4;
            letter-spacing: -0.2px;
        }
        .tool-card-title a {
            color: var(--text);
            transition: color var(--transition);
        }
        .tool-card-title a:hover {
            color: var(--primary);
        }
        .tool-card-summary {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .tool-card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 0.25rem;
            flex-wrap: wrap;
        }
        .tool-card-meta i {
            margin-right: 0.3rem;
            color: var(--primary);
        }
        .list-more {
            display: flex;
            justify-content: center;
            margin-top: 1.5rem;
        }
        /* Stats Section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .stat-card {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius);
            padding: 1.5rem;
            text-align: center;
            transition: background var(--transition), border-color var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.14);
            border-color: rgba(255,255,255,0.3);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent);
            font-family: var(--font-num);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-label {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.75);
            margin-top: 0.4rem;
            font-weight: 500;
        }
        .stat-unit {
            font-size: 1rem;
            color: rgba(255,255,255,0.6);
            font-weight: 400;
        }
        /* Category Entry */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .category-entry-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            box-shadow: var(--shadow-sm);
            display: block;
        }
        .category-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
            color: var(--primary);
        }
        .category-entry-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin: 0 auto 0.75rem;
            transition: background var(--transition), color var(--transition);
        }
        .category-entry-card:hover .category-entry-icon {
            background: var(--primary);
            color: #fff;
        }
        .category-entry-name {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin: 0;
            transition: color var(--transition);
        }
        .category-entry-card:hover .category-entry-name {
            color: var(--primary);
        }
        /* Related Links */
        .related-links-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .related-links-list li {
            padding: 0;
            margin: 0;
        }
        .related-links-list a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.8rem 1rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .related-links-list a i {
            color: var(--primary);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .related-links-list a:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateX(3px);
        }
        /* FAQ */
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition);
        }
        .accordion-item:hover {
            border-color: #D1D5DB;
        }
        .accordion-item.is-active {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.25rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: color var(--transition);
            line-height: 1.5;
        }
        .accordion-title:hover {
            color: var(--primary);
        }
        .accordion-title::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .accordion-item.is-active .accordion-title::after {
            content: '\f068';
        }
        .accordion-content {
            display: none;
            padding: 0 1.25rem 1.25rem;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }
        /* CTA Section */
        .cta-box {
            background: var(--primary-deep);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: rgba(245,166,35,0.12);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 250px;
            height: 250px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 240px;
        }
        .cta-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 0.5rem;
            letter-spacing: -0.3px;
        }
        .cta-content p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
            margin: 0;
            max-width: 480px;
        }
        .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }
        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255,255,255,0.8);
            padding: 3rem 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
        }
        .footer-brand {
            max-width: 320px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }
        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
        }
        .footer-logo span {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.2px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin: 0;
            color: rgba(255,255,255,0.65);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin: 0 0 1rem;
            letter-spacing: 0.2px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 0.85rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
            color: var(--accent);
        }
        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding: 1rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-disclaimer {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer-disclaimer i {
            color: var(--accent);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 2.5rem;
                --section-gap-mobile: 2rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .category-entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .tool-card {
                gap: 1rem;
                padding: 1rem;
            }
            .tool-card-img {
                width: 170px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                max-width: 100%;
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 640px) {
            :root {
                --section-gap: 2rem;
                --section-gap-mobile: 2rem;
            }
            .container {
                padding: 0 1rem;
            }
            .header-inner {
                padding: 0.5rem 0;
                gap: 0.5rem;
            }
            .nav-hamburger {
                display: block;
            }
            .nav-search {
                order: 4;
                flex-basis: 100%;
                min-width: 100%;
            }
            .nav-menu-wrapper {
                display: none;
                order: 5;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.5rem;
            }
            .nav-menu-wrapper.is-open {
                display: block;
            }
            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                gap: 0.25rem;
            }
            .nav-menu>li>a {
                display: block;
                padding: 0.7rem 1rem;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .filter-bar {
                top: 54px;
                padding: 0.5rem 0;
            }
            .filter-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 0.5rem;
            }
            .filter-tabs {
                overflow-x: auto;
                flex-wrap: nowrap;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 0.25rem;
            }
            .filter-tab {
                flex-shrink: 0;
            }
            .filter-sort {
                justify-content: space-between;
            }
            .tool-card {
                flex-direction: column;
                padding: 1rem;
                gap: 0.75rem;
            }
            .tool-card-img {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .tool-card-title {
                font-size: 1.05rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .stat-card {
                padding: 1rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .category-entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .category-entry-card {
                padding: 1rem;
            }
            .cta-box {
                padding: 1.5rem;
                flex-direction: column;
                text-align: center;
            }
            .cta-content p {
                max-width: 100%;
            }
            .cta-actions {
                justify-content: center;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .category-head h1 {
                font-size: 1.6rem;
            }
        }
        @media (min-width: 641px) and (max-width: 1024px) {
            .nav-search {
                flex: 1 1 180px;
                min-width: 160px;
            }
        }
        @media (min-width: 641px) {
            .nav-menu-wrapper {
                display: flex !important;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1B7A3D;
            --primary-dark: #0F5B2B;
            --primary-light: #E8F5EE;
            --primary-deep: #0A3D1F;
            --accent: #F5A623;
            --accent-light: #FFF3DF;
            --bg: #F6F8FA;
            --surface: #FFFFFF;
            --text: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
            --transition: 0.25s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-num: "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
            --container-width: 1180px;
            --section-gap: 3rem;
            --section-gap-mobile: 2.25rem;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }

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

        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 3px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 1rem;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 0.75rem 0;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .nav-logo .logo-text span {
            color: var(--primary);
        }

        .nav-search {
            flex: 1 1 auto;
            min-width: 200px;
            display: flex;
            align-items: center;
            position: relative;
            order: 2;
            max-width: 420px;
            margin-left: auto;
        }

        .nav-search input {
            width: 100%;
            border: 2px solid var(--border);
            border-radius: 999px;
            padding: 0.55rem 1rem 0.55rem 2.7rem;
            font-size: 0.92rem;
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
            color: var(--text);
            appearance: none;
            -webkit-appearance: none;
        }

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

        .nav-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
            background: #fff;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 0.95rem;
            color: var(--text-muted);
            pointer-events: none;
            font-size: 0.9rem;
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.45rem;
            color: var(--text);
            cursor: pointer;
            padding: 0.4rem;
            border-radius: 6px;
            transition: background var(--transition);
            order: 3;
        }

        .nav-hamburger:hover {
            background: var(--primary-light);
        }

        .nav-hamburger:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-menu-wrapper {
            width: 100%;
            order: 4;
            display: flex;
            align-items: center;
            justify-content: flex-start;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.12rem;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu>li {
            margin: 0;
            padding: 0;
        }

        .nav-menu>li>a {
            display: inline-block;
            padding: 0.45rem 0.85rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-menu>li>a:hover,
        .nav-menu>li>a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            padding: 1.25rem 0 0.25rem;
            font-size: 0.88rem;
            color: var(--text-muted);
        }

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

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

        .breadcrumb-bar .sep {
            margin: 0 0.5rem;
            color: var(--border);
        }

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

        /* ========== Category Hero ========== */
        .cat-hero {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-dark) 55%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2.5rem 2.25rem;
            margin-top: 1rem;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            pointer-events: none;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            right: 80px;
            bottom: -100px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(245,166,35,0.12);
            pointer-events: none;
        }

        .cat-hero .cat-tag {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            border: 1px solid rgba(255,255,255,0.25);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            letter-spacing: 0.3px;
            margin-bottom: 1rem;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .cat-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
            line-height: 1.35;
            letter-spacing: -0.5px;
            position: relative;
            z-index: 1;
            color: #fff;
        }

        .cat-hero p {
            font-size: 1rem;
            color: rgba(255,255,255,0.88);
            margin: 0;
            max-width: 720px;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0.75rem 1rem;
            box-shadow: var(--shadow-sm);
        }

        .filter-bar .filter-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .filter-tabs li {
            margin: 0;
        }

        .filter-tabs .filter-tab {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            border-radius: 999px;
            transition: all var(--transition);
            white-space: nowrap;
            background: var(--surface);
            cursor: pointer;
        }

        .filter-tabs .filter-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .filter-tabs .filter-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .filter-sort label {
            font-size: 0.82rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .filter-sort select {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.35rem 0.6rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
            background: var(--surface);
            transition: border-color var(--transition);
            cursor: pointer;
            appearance: auto;
            -webkit-appearance: auto;
        }

        .filter-sort select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.1);
        }

        /* ========== Article List ========== */
        .section-block {
            padding: var(--section-gap) 0 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .section-head h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .section-head .section-sub {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        .article-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }

        .article-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: row;
            transition: box-shadow var(--transition), transform var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .article-card .card-img {
            width: 200px;
            min-height: 140px;
            flex-shrink: 0;
            overflow: hidden;
            position: relative;
            background: var(--primary-light);
        }

        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .article-card .card-body {
            padding: 1.1rem 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
            min-width: 0;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            flex-wrap: wrap;
        }

        .article-card .card-meta .badge-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: 999px;
            letter-spacing: 0.2px;
        }

        .article-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 0.5rem;
            line-height: 1.45;
            color: var(--text);
        }

        .article-card h3 a {
            color: var(--text);
            transition: color var(--transition);
        }

        .article-card h3 a:hover {
            color: var(--primary);
        }

        .article-card .card-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0.6rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card .card-link {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            transition: color var(--transition);
        }

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

        /* ========== Data Stats ========== */
        .stats-panel {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.75rem;
            box-shadow: var(--shadow-sm);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .stat-item {
            text-align: center;
            padding: 1rem 0.5rem;
            border-radius: var(--radius);
            background: var(--bg);
        }

        .stat-item .stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-num);
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }

        /* ========== Category Entry ========== */
        .cat-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .cat-entry-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.5rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            transition: box-shadow var(--transition), transform var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .cat-entry-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
            border-radius: 4px 0 0 4px;
        }

        .cat-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .cat-entry-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0;
            color: var(--text);
        }

        .cat-entry-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.65;
        }

        .cat-entry-card a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            margin-top: 0.4rem;
            transition: color var(--transition);
        }

        .cat-entry-card a:hover {
            color: var(--primary-dark);
        }

        /* ========== Related Articles ========== */
        .related-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0.75rem;
        }

        .related-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0.85rem 1.1rem;
            transition: box-shadow var(--transition), transform var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .related-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .related-item .ri-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .related-item .ri-content {
            flex: 1;
            min-width: 0;
        }

        .related-item .ri-content a {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
            display: block;
        }

        .related-item .ri-content a:hover {
            color: var(--primary);
        }

        .related-item .ri-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.15rem;
        }

        /* ========== CTA Section ========== */
        .cta-panel {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary-dark) 60%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2.5rem;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(245,166,35,0.15);
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 0.6rem;
            color: #fff;
            letter-spacing: -0.3px;
            position: relative;
            z-index: 1;
        }

        .cta-panel p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.88);
            margin: 0 0 1.5rem;
            max-width: 620px;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }

        .cta-panel .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.5;
            letter-spacing: 0.2px;
        }

        .btn-primary {
            background: var(--accent);
            color: #1F2937;
        }

        .btn-primary:hover {
            background: #e6951a;
            color: #1F2937;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(245,166,35,0.35);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,0.12);
            color: #fff;
            border-color: #fff;
            transform: translateY(-1px);
        }

        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

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

        /* ========== Footer ========== */
        .site-footer {
            background: #0F1A14;
            color: #CBD5D0;
            margin-top: var(--section-gap);
            padding: 3rem 0 1.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }

        .footer-brand .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .footer-brand .footer-logo span {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
        }

        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.75;
            color: #A8B5AE;
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin: 0 0 1rem;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            color: #A8B5AE;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: color var(--transition);
        }

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

        .footer-col ul li a i {
            font-size: 0.65rem;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding-top: 1.25rem;
            font-size: 0.8rem;
            color: #8A9A91;
        }

        .footer-disclaimer {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #8A9A91;
        }

        .footer-disclaimer i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .article-list {
                grid-template-columns: 1fr;
            }

            .article-card .card-img {
                width: 170px;
                min-height: 130px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .cat-entry-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 1.5rem;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 2.5rem;
            }

            .cat-hero {
                padding: 1.75rem 1.5rem;
            }

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

            .cat-hero p {
                font-size: 0.92rem;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }

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

            .cat-entry-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.6rem;
            }

            .filter-sort {
                margin-left: 0;
                width: 100%;
            }

            .filter-sort select {
                flex: 1;
                width: 100%;
            }
        }

        @media (max-width: 640px) {
            .nav-hamburger {
                display: block;
            }

            .nav-search {
                order: 2;
                max-width: none;
                flex: 1 1 calc(100% - 60px);
            }

            .nav-menu-wrapper {
                display: none;
                width: 100%;
                order: 5;
                padding: 0.5rem 0 0.25rem;
                border-top: 1px solid var(--border);
                margin-top: 0.25rem;
            }

            .nav-menu-wrapper.is-open {
                display: block;
            }

            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                gap: 0.15rem;
            }

            .nav-menu>li>a {
                display: block;
                padding: 0.6rem 0.8rem;
                font-size: 0.95rem;
            }

            .article-card {
                flex-direction: column;
            }

            .article-card .card-img {
                width: 100%;
                min-height: 180px;
                aspect-ratio: 16/9;
            }

            .article-card .card-body {
                padding: 1rem 1.1rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }

            .stat-item .stat-num {
                font-size: 1.4rem;
            }

            .cta-panel {
                padding: 1.75rem 1.5rem;
            }

            .cta-panel h2 {
                font-size: 1.25rem;
            }

            .section-head h2 {
                font-size: 1.3rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }

            .cat-hero h1 {
                font-size: 1.35rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1B7A3D;
            --primary-dark: #0F5B2B;
            --primary-light: #E8F5EE;
            --primary-deep: #0A3D1F;
            --accent: #F5A623;
            --accent-light: #FFF3DF;
            --bg: #F6F8FA;
            --surface: #FFFFFF;
            --text: #1F2937;
            --text-secondary: #4B5563;
            --text-muted: #6B7280;
            --border: #E5E7EB;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
            --transition: 0.25s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-num: "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
            --container-width: 1180px;
            --section-gap: 3rem;
            --section-gap-mobile: 2.25rem;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            font-size: 1rem;
        }

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

        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 3px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 1rem;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            padding: 0.75rem 0;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .nav-logo .logo-text {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .nav-logo .logo-text span {
            color: var(--primary);
        }

        .nav-search {
            flex: 1 1 auto;
            min-width: 200px;
            display: flex;
            align-items: center;
            position: relative;
            order: 2;
        }

        .nav-search input {
            width: 100%;
            border: 2px solid var(--border);
            border-radius: 999px;
            padding: 0.6rem 1rem 0.6rem 2.8rem;
            font-size: 0.95rem;
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
            color: var(--text);
        }

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

        .nav-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
            background: #fff;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 1rem;
            color: var(--text-muted);
            pointer-events: none;
            font-size: 0.95rem;
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 0.4rem;
            border-radius: 6px;
            transition: background var(--transition);
            order: 1;
        }

        .nav-hamburger:hover {
            background: var(--primary-light);
        }

        .nav-hamburger:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-menu-wrapper {
            width: 100%;
            order: 3;
            display: flex;
            align-items: center;
            justify-content: flex-start;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu > li {
            margin: 0;
            padding: 0;
        }

        .nav-menu > li > a {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-menu > li > a:hover,
        .nav-menu > li > a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 0.75rem 0;
        }

        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: var(--text-muted);
        }

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

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

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

        .breadcrumb-bar .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== Section ========== */
        .section {
            padding: var(--section-gap) 0;
        }

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

        .section-deep {
            background: var(--primary-deep);
            color: #fff;
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5rem;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .section-deep .section-title {
            color: #fff;
        }
        .section-deep .section-subtitle {
            color: rgba(255,255,255,0.75);
        }

        /* ========== Category H1 ========== */
        .category-hero {
            padding: 2.25rem 0 1.5rem;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }

        .category-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.6rem;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .category-hero .category-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 780px;
        }

        /* ========== Data Summary Cards ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .stat-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.35rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-card .stat-number {
            font-family: var(--font-num);
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.3rem;
            letter-spacing: -0.5px;
        }

        .stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.4;
        }

        .stat-card .stat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: 0.6rem;
        }

        .stat-card.deep {
            background: var(--primary-deep);
            border-color: var(--primary-deep);
            color: #fff;
        }
        .stat-card.deep .stat-number {
            color: #fff;
        }
        .stat-card.deep .stat-label {
            color: rgba(255,255,255,0.75);
        }
        .stat-card.deep .stat-icon {
            background: rgba(255,255,255,0.15);
            color: var(--accent);
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.6rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0.8rem 1.2rem;
            box-shadow: var(--shadow-sm);
            margin-bottom: 1.75rem;
        }

        .filter-bar .filter-label {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-right: 0.4rem;
            white-space: nowrap;
        }

        .filter-tag {
            display: inline-block;
            padding: 0.4rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ========== Article List Cards ========== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .article-card {
            display: grid;
            grid-template-columns: 240px 1fr;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            min-height: 150px;
        }

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

        .article-card .card-thumb {
            position: relative;
            overflow: hidden;
            background: var(--primary-light);
            min-height: 150px;
        }

        .article-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .article-card .card-body {
            padding: 1.35rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .article-card .card-body h3 {
            font-size: 1.12rem;
            font-weight: 700;
            line-height: 1.45;
            margin: 0;
        }

        .article-card .card-body h3 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .article-card .card-body h3 a:hover {
            color: var(--primary);
        }

        .article-card .card-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: auto;
        }

        .article-card .card-meta .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .article-card .card-meta .meta-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 4px;
        }

        .article-card .card-meta .meta-tag.accent {
            background: var(--accent-light);
            color: var(--accent);
        }

        .article-list .load-more {
            text-align: center;
            padding: 1rem 0;
        }

        .article-list .load-more a {
            display: inline-block;
            padding: 0.7rem 2rem;
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .article-list .load-more a:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ========== Category Entrance ========== */
        .cat-entrance-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .cat-entrance-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.75rem;
            text-align: left;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .cat-entrance-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .cat-entrance-card .cat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.25rem;
            margin-bottom: 0.8rem;
        }

        .cat-entrance-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 0.4rem;
            color: var(--text);
        }

        .cat-entrance-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0 0 0.8rem;
            line-height: 1.5;
        }

        .cat-entrance-card a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
        }
        .cat-entrance-card a:hover {
            color: var(--primary-dark);
        }

        /* ========== Related Links ========== */
        .related-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .related-links li {
            margin-bottom: 0.6rem;
        }

        .related-links li a {
            display: block;
            padding: 0.8rem 1.2rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
        }

        .related-links li a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* ========== CTA Box ========== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 2rem;
            align-items: center;
            color: #fff;
        }

        .cta-box h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: #fff;
        }

        .cta-box p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
            margin: 0;
            line-height: 1.6;
        }

        .cta-box .cta-btn {
            display: inline-block;
            padding: 0.8rem 2rem;
            background: var(--accent);
            color: #fff;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }

        .cta-box .cta-btn:hover {
            background: #e6930f;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0,0,0,0.25);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255,255,255,0.85);
            padding: 3rem 0 1.5rem;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.15);
            margin-bottom: 1.5rem;
        }

        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }

        .site-footer .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .site-footer .footer-logo span {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }

        .site-footer .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            margin: 0;
            max-width: 300px;
        }

        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.3px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .site-footer .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 0.85rem;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

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

        .site-footer .footer-col ul li a i {
            font-size: 0.7rem;
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.55);
        }

        .site-footer .footer-disclaimer i {
            color: var(--accent);
            margin-right: 0.3rem;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-card {
                grid-template-columns: 190px 1fr;
            }
            .cat-entrance-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-box {
                grid-template-columns: 1fr;
                text-align: center;
                padding: 2.25rem 1.5rem;
            }
            .cta-box .cta-btn {
                justify-self: center;
            }
        }

        @media (max-width: 640px) {
            :root {
                --section-gap: var(--section-gap-mobile);
            }
            .container {
                padding: 0 1rem;
            }
            .header-inner {
                flex-wrap: nowrap;
            }
            .nav-hamburger {
                display: inline-flex;
            }
            .nav-search {
                order: 2;
                min-width: 0;
                flex: 1 1 auto;
            }
            .nav-search input {
                padding: 0.55rem 0.75rem 0.55rem 2.4rem;
                font-size: 0.88rem;
            }
            .nav-search .search-icon {
                left: 0.75rem;
                font-size: 0.85rem;
            }
            .nav-menu-wrapper {
                display: none;
                width: 100%;
                order: 3;
                flex-direction: column;
                align-items: stretch;
                padding-top: 0.5rem;
            }
            .nav-menu-wrapper.open {
                display: flex;
            }
            .nav-menu {
                flex-direction: column;
                align-items: stretch;
                gap: 0.2rem;
                width: 100%;
            }
            .nav-menu > li > a {
                display: block;
                padding: 0.65rem 1rem;
                font-size: 0.95rem;
            }
            .nav-logo .logo-text {
                font-size: 0.95rem;
                white-space: normal;
                line-height: 1.2;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-card {
                padding: 1rem 1.1rem;
            }
            .stat-card .stat-number {
                font-size: 1.45rem;
            }
            .filter-bar {
                padding: 0.7rem 0.9rem;
                gap: 0.4rem;
            }
            .filter-tag {
                padding: 0.35rem 0.8rem;
                font-size: 0.78rem;
            }
            .article-card {
                grid-template-columns: 1fr;
            }
            .article-card .card-thumb {
                min-height: 180px;
                height: 180px;
            }
            .article-card .card-body {
                padding: 1rem 1.1rem;
            }
            .cat-entrance-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
            }
        }

        @media (max-width: 420px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .article-card .card-thumb {
                min-height: 150px;
                height: 150px;
            }
            .filter-bar .filter-label {
                width: 100%;
                margin-bottom: 0.2rem;
            }
        }

/* roulang page: category5 */
:root {
        --primary: #1B7A3D;
        --primary-dark: #0F5B2B;
        --primary-light: #E8F5EE;
        --primary-deep: #0A3D1F;
        --accent: #F5A623;
        --accent-light: #FFF3DF;
        --bg: #F6F8FA;
        --surface: #FFFFFF;
        --text: #1F2937;
        --text-secondary: #4B5563;
        --text-muted: #6B7280;
        --border: #E5E7EB;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 16px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
        --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
        --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
        --transition: 0.25s ease;
        --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        --font-num: "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
        --container-width: 1180px;
        --section-gap: 3rem;
        --section-gap-mobile: 2.25rem;
    }
    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }
    body {
        font-family: var(--font);
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        min-height: 100vh;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover,
    a:focus {
        color: var(--primary-dark);
        text-decoration: none;
    }
    a:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
        border-radius: 3px;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    select,
    textarea {
        font-family: var(--font);
        font-size: 1rem;
    }
    .container {
        max-width: var(--container-width);
        margin: 0 auto;
        padding: 0 1.5rem;
    }
    /* Header / Nav */
    .site-header {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    }
    .header-inner {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.75rem;
        padding: 0.75rem 0;
    }
    .nav-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        flex-shrink: 0;
    }
    .nav-logo .logo-icon {
        width: 38px;
        height: 38px;
        background: var(--primary);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.2rem;
        font-weight: 700;
        letter-spacing: -0.5px;
        flex-shrink: 0;
    }
    .nav-logo .logo-text {
        font-size: 1.12rem;
        font-weight: 700;
        color: var(--text);
        white-space: nowrap;
        letter-spacing: -0.3px;
    }
    .nav-logo .logo-text span {
        color: var(--primary);
    }
    .nav-search {
        flex: 1 1 auto;
        min-width: 200px;
        display: flex;
        align-items: center;
        position: relative;
        order: 2;
    }
    .nav-search input {
        width: 100%;
        border: 2px solid var(--border);
        border-radius: 999px;
        padding: 0.6rem 1rem 0.6rem 2.8rem;
        font-size: 0.95rem;
        background: var(--bg);
        transition: border-color var(--transition), box-shadow var(--transition);
        color: var(--text);
    }
    .nav-search input::placeholder {
        color: var(--text-muted);
    }
    .nav-search input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
        background: #fff;
    }
    .nav-search .search-icon {
        position: absolute;
        left: 1rem;
        color: var(--text-muted);
        pointer-events: none;
        font-size: 0.95rem;
    }
    .nav-hamburger {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--text);
        cursor: pointer;
        padding: 0.4rem;
        border-radius: 6px;
        transition: background var(--transition);
    }
    .nav-hamburger:hover {
        background: var(--primary-light);
    }
    .nav-hamburger:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
    }
    .nav-menu-wrapper {
        width: 100%;
        order: 3;
        display: flex;
        align-items: center;
        justify-content: flex-start;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 0.15rem;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: wrap;
    }
    .nav-menu > li {
        margin: 0;
        padding: 0;
    }
    .nav-menu > li > a {
        display: inline-block;
        padding: 0.5rem 0.9rem;
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: 6px;
        transition: color var(--transition), background var(--transition);
        white-space: nowrap;
    }
    .nav-menu > li > a:hover,
    .nav-menu > li > a:focus {
        color: var(--primary);
        background: var(--primary-light);
    }
    .nav-menu > li > a.active {
        color: #fff;
        background: var(--primary);
        font-weight: 600;
    }
    /* Breadcrumb */
    .breadcrumb {
        background: transparent;
        padding: 1rem 0 0;
        margin: 0;
    }
    .breadcrumb ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        font-size: 0.9rem;
        color: var(--text-muted);
    }
    .breadcrumb li {
        display: flex;
        align-items: center;
    }
    .breadcrumb li + li::before {
        content: "›";
        margin: 0 0.5rem;
        color: var(--text-muted);
    }
    .breadcrumb a {
        color: var(--text-secondary);
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb .current {
        color: var(--primary);
        font-weight: 500;
    }
    /* Section Base */
    .section {
        padding: var(--section-gap) 0;
    }
    .section-alt {
        background: #fff;
    }
    .section-title {
        margin-bottom: 1.5rem;
    }
    .section-title h2 {
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 0.5rem;
        letter-spacing: -0.3px;
    }
    .section-title p {
        color: var(--text-secondary);
        font-size: 1rem;
        margin: 0;
        max-width: 700px;
    }
    /* Cards */
    .card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition);
        overflow: hidden;
    }
    .card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
    }
    .card-body {
        padding: 1.25rem;
    }
    .card-title {
        font-size: 1.15rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
        color: var(--text);
        line-height: 1.4;
    }
    .card-title a {
        color: var(--text);
    }
    .card-title a:hover {
        color: var(--primary);
    }
    .card-text {
        color: var(--text-secondary);
        font-size: 0.92rem;
        margin-bottom: 0.75rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .card-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 0.75rem;
        align-items: center;
        font-size: 0.82rem;
        color: var(--text-muted);
    }
    .badge {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary-dark);
        padding: 0.2rem 0.6rem;
        border-radius: 999px;
        font-size: 0.78rem;
        font-weight: 500;
    }
    .badge-accent {
        background: var(--accent-light);
        color: #B45F06;
    }
    /* Filter Bar */
    .filter-bar {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 0.75rem 1rem;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        flex-wrap: wrap;
        margin-bottom: 2rem;
        box-shadow: var(--shadow-sm);
    }
    .filter-bar label {
        font-size: 0.9rem;
        color: var(--text-secondary);
        margin: 0;
    }
    .filter-bar select {
        min-width: 150px;
        padding: 0.4rem 0.6rem;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        background: #fff;
        color: var(--text);
    }
    .filter-bar .filter-tags {
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    .filter-bar .filter-tags a {
        padding: 0.3rem 0.8rem;
        border-radius: 999px;
        background: var(--bg);
        color: var(--text-secondary);
        font-size: 0.85rem;
        transition: all var(--transition);
    }
    .filter-bar .filter-tags a:hover,
    .filter-bar .filter-tags a.active {
        background: var(--primary);
        color: #fff;
    }
    /* List Cards */
    .list-card {
        display: flex;
        flex-direction: column;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        margin-bottom: 1rem;
        overflow: hidden;
        transition: box-shadow var(--transition), transform var(--transition);
    }
    .list-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }
    .list-card img {
        width: 100%;
        height: 180px;
        object-fit: cover;
    }
    .list-card .list-content {
        padding: 1rem 1.25rem;
    }
    .list-card .list-title {
        font-size: 1.08rem;
        font-weight: 600;
        margin-bottom: 0.4rem;
        line-height: 1.4;
        color: var(--text);
    }
    .list-card .list-title a {
        color: var(--text);
    }
    .list-card .list-title a:hover {
        color: var(--primary);
    }
    .list-card .list-summary {
        color: var(--text-secondary);
        font-size: 0.9rem;
        margin-bottom: 0.6rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .list-card .list-meta {
        font-size: 0.8rem;
        color: var(--text-muted);
        display: flex;
        gap: 0.8rem;
        align-items: center;
    }
    @media (min-width: 640px) {
        .list-card {
            flex-direction: row;
        }
        .list-card img {
            width: 220px;
            height: auto;
            min-height: 140px;
            flex-shrink: 0;
        }
        .list-card .list-content {
            flex: 1;
        }
    }
    /* Stats */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 1rem;
    }
    .stat-card {
        background: var(--primary-deep);
        color: #fff;
        border-radius: var(--radius);
        padding: 1.25rem;
        text-align: center;
        box-shadow: var(--shadow-md);
    }
    .stat-card .stat-value {
        font-family: var(--font-num);
        font-size: 1.8rem;
        font-weight: 700;
        margin-bottom: 0.3rem;
    }
    .stat-card .stat-label {
        font-size: 0.88rem;
        color: rgba(255,255,255,0.85);
    }
    /* Related Links */
    .related-links {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 1.5rem;
    }
    .related-links ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 0.75rem;
    }
    .related-links li a {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        color: var(--text-secondary);
        font-size: 0.95rem;
        padding: 0.5rem 0.75rem;
        border-radius: 6px;
        transition: background var(--transition), color var(--transition);
    }
    .related-links li a:hover {
        background: var(--primary-light);
        color: var(--primary-dark);
    }
    /* FAQ */
    .faq-item {
        border: 1px solid var(--border);
        border-radius: var(--radius);
        background: var(--surface);
        margin-bottom: 0.75rem;
        overflow: hidden;
    }
    .faq-question {
        padding: 1rem 1.25rem;
        font-weight: 600;
        font-size: 1rem;
        color: var(--text);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        background: #fff;
        transition: background var(--transition);
        border: none;
        width: 100%;
        text-align: left;
    }
    .faq-question:hover {
        background: var(--primary-light);
    }
    .faq-question .faq-icon {
        transition: transform var(--transition);
        flex-shrink: 0;
        margin-left: 1rem;
    }
    .faq-question[aria-expanded="true"] .faq-icon {
        transform: rotate(45deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition) ease;
        background: #fff;
    }
    .faq-answer p {
        padding: 0 1.25rem 1rem;
        color: var(--text-secondary);
        margin: 0;
    }
    /* CTA */
    .cta-card {
        background: var(--primary);
        color: #fff;
        border-radius: var(--radius-lg);
        padding: 2rem 1.5rem;
        text-align: center;
        box-shadow: var(--shadow-lg);
    }
    .cta-card h3 {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
    }
    .cta-card p {
        font-size: 1rem;
        opacity: 0.95;
        margin-bottom: 1.25rem;
    }
    .btn {
        display: inline-block;
        padding: 0.75rem 1.5rem;
        border-radius: var(--radius-sm);
        font-weight: 600;
        font-size: 1rem;
        text-align: center;
        transition: all var(--transition);
        border: none;
        cursor: pointer;
    }
    .btn-primary {
        background: var(--accent);
        color: #1F2937;
    }
    .btn-primary:hover,
    .btn-primary:focus {
        background: #e69500;
        color: #1F2937;
    }
    .btn-outline {
        background: transparent;
        border: 2px solid #fff;
        color: #fff;
    }
    .btn-outline:hover,
    .btn-outline:focus {
        background: rgba(255,255,255,0.15);
        color: #fff;
    }
    /* Footer */
    .site-footer {
        background: var(--primary-deep);
        color: rgba(255,255,255,0.9);
        padding: 2.5rem 0 1.5rem;
        margin-top: 2rem;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 2rem;
    }
    .footer-brand .footer-logo {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 1.2rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 0.75rem;
    }
    .footer-brand .footer-logo .logo-icon {
        width: 32px;
        height: 32px;
        background: var(--accent);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #1F2937;
        font-size: 1rem;
    }
    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.6;
        opacity: 0.9;
        max-width: 380px;
    }
    .footer-col h4 {
        font-size: 1rem;
        font-weight: 600;
        color: #fff;
        margin-bottom: 0.75rem;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-col ul li {
        margin-bottom: 0.5rem;
    }
    .footer-col ul li a {
        color: rgba(255,255,255,0.8);
        font-size: 0.9rem;
        transition: color var(--transition);
    }
    .footer-col ul li a:hover {
        color: var(--accent);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.15);
        margin-top: 2rem;
        padding-top: 1.25rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.75rem;
        font-size: 0.85rem;
        opacity: 0.85;
    }
    .footer-disclaimer i {
        margin-right: 0.25rem;
    }
    /* Responsive */
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }
    @media (max-width: 640px) {
        :root {
            --section-gap: 2.25rem;
        }
        .header-inner {
            justify-content: space-between;
        }
        .nav-search {
            order: 3;
            width: 100%;
            min-width: 0;
        }
        .nav-hamburger {
            display: block;
        }
        .nav-menu-wrapper {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 0.5rem 1rem;
        }
        .nav-menu-wrapper.open {
            display: block;
        }
        .nav-menu {
            flex-direction: column;
            align-items: stretch;
            gap: 0;
        }
        .nav-menu > li > a {
            display: block;
            padding: 0.75rem 0.5rem;
            border-radius: 0;
            border-bottom: 1px solid var(--border);
        }
        .nav-menu > li:last-child > a {
            border-bottom: none;
        }
        .list-card img {
            height: 140px;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
    }
    @media (max-width: 520px) {
        .stats-grid {
            grid-template-columns: 1fr;
        }
    }

/* roulang page: category6 */
:root {
        --primary: #1B7A3D;
        --primary-dark: #0F5B2B;
        --primary-light: #E8F5EE;
        --primary-deep: #0A3D1F;
        --accent: #F5A623;
        --accent-light: #FFF3DF;
        --bg: #F6F8FA;
        --surface: #FFFFFF;
        --text: #1F2937;
        --text-secondary: #4B5563;
        --text-muted: #6B7280;
        --border: #E5E7EB;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 16px;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
        --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
        --shadow-lg: 0 6px 24px rgba(0,0,0,0.1);
        --transition: 0.25s ease;
        --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        --font-num: "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
        --container-width: 1180px;
        --section-gap: 3.5rem;
        --section-gap-mobile: 2.25rem;
    }
    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }
    body {
        font-family: var(--font);
        background: var(--bg);
        color: var(--text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        min-height: 100vh;
        margin: 0;
        padding: 0;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover,
    a:focus {
        color: var(--primary-dark);
        text-decoration: none;
    }
    a:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
        border-radius: 3px;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    select,
    textarea {
        font-family: var(--font);
        font-size: 1rem;
    }
    .container {
        max-width: var(--container-width);
        margin: 0 auto;
        padding: 0 1.5rem;
    }
    /* ========== Header / Nav ========== */
    .site-header {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    }
    .header-inner {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.75rem;
        padding: 0.75rem 0;
    }
    .nav-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        flex-shrink: 0;
    }
    .nav-logo .logo-icon {
        width: 38px;
        height: 38px;
        background: var(--primary);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.2rem;
        font-weight: 700;
        letter-spacing: -0.5px;
        flex-shrink: 0;
    }
    .nav-logo .logo-text {
        font-size: 1.12rem;
        font-weight: 700;
        color: var(--text);
        white-space: nowrap;
        letter-spacing: -0.3px;
    }
    .nav-logo .logo-text span {
        color: var(--primary);
    }
    .nav-search {
        flex: 1 1 auto;
        min-width: 200px;
        display: flex;
        align-items: center;
        position: relative;
        order: 2;
    }
    .nav-search input {
        width: 100%;
        border: 2px solid var(--border);
        border-radius: 999px;
        padding: 0.6rem 1rem 0.6rem 2.8rem;
        font-size: 0.95rem;
        background: var(--bg);
        transition: border-color var(--transition), box-shadow var(--transition);
        color: var(--text);
    }
    .nav-search input::placeholder {
        color: var(--text-muted);
    }
    .nav-search input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(27,122,61,0.12);
        background: #fff;
    }
    .nav-search .search-icon {
        position: absolute;
        left: 1rem;
        color: var(--text-muted);
        pointer-events: none;
        font-size: 0.95rem;
    }
    .nav-hamburger {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--text);
        cursor: pointer;
        padding: 0.4rem;
        border-radius: 6px;
        transition: background var(--transition);
    }
    .nav-hamburger:hover {
        background: var(--primary-light);
    }
    .nav-hamburger:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 2px;
    }
    .nav-menu-wrapper {
        width: 100%;
        order: 3;
        display: flex;
        align-items: center;
        justify-content: flex-start;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 0.15rem;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: wrap;
    }
    .nav-menu > li {
        margin: 0;
        padding: 0;
    }
    .nav-menu > li > a {
        display: inline-block;
        padding: 0.5rem 0.9rem;
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--text-secondary);
        border-radius: 6px;
        transition: color var(--transition), background var(--transition);
        white-space: nowrap;
    }
    .nav-menu > li > a:hover,
    .nav-menu > li > a:focus {
        color: var(--primary);
        background: var(--primary-light);
    }
    .nav-menu > li > a.active {
        color: #fff;
        background: var(--primary);
        font-weight: 600;
    }
    /* ========== Breadcrumb ========== */
    .breadcrumb-area {
        padding: 2rem 0 0 0;
        margin-bottom: 0;
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.5rem;
        font-size: 0.85rem;
        color: var(--text-muted);
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .breadcrumb li {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    .breadcrumb li + li::before {
        content: "/";
        color: var(--border);
        margin-right: 0.5rem;
    }
    .breadcrumb a {
        color: var(--primary);
        font-weight: 500;
    }
    .breadcrumb a:hover {
        color: var(--primary-dark);
    }
    .breadcrumb .current {
        color: var(--text);
        font-weight: 600;
    }
    /* ========== Category Header ========== */
    .category-header {
        padding: 1.5rem 0 2rem 0;
    }
    .category-header h1 {
        font-size: 2.1rem;
        font-weight: 700;
        color: var(--text);
        margin: 0 0 0.75rem 0;
        line-height: 1.3;
    }
    .category-header .cat-desc {
        font-size: 1.02rem;
        color: var(--text-secondary);
        margin: 0;
        max-width: 780px;
        line-height: 1.7;
    }
    /* ========== Stats Strip ========== */
    .stats-strip-section {
        padding: 0 0 2.5rem 0;
    }
    .stats-strip {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.25rem;
    }
    .stat-block {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 1.5rem 1.25rem;
        text-align: center;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition);
    }
    .stat-block:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
    }
    .stat-block .stat-num {
        font-family: var(--font-num);
        font-size: 1.9rem;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
        margin-bottom: 0.4rem;
    }
    .stat-block .stat-label {
        font-size: 0.86rem;
        color: var(--text-muted);
        font-weight: 500;
    }
    /* ========== List Cards Section ========== */
    .list-section {
        padding: 0 0 3rem 0;
    }
    .list-section .section-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 0.75rem;
        margin-bottom: 1.5rem;
    }
    .list-section .section-head h2 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text);
        margin: 0;
    }
    .list-section .section-head .more-link {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
    }
    .list-section .section-head .more-link:hover {
        color: var(--primary-dark);
    }
    .qa-card-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    .qa-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 1.25rem;
        display: flex;
        gap: 1rem;
        align-items: flex-start;
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition), transform var(--transition);
    }
    .qa-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
    }
    .qa-card .qa-thumb {
        flex-shrink: 0;
        width: 110px;
        height: 82px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        position: relative;
    }
    .qa-card .qa-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .qa-card .qa-body {
        flex: 1;
        min-width: 0;
    }
    .qa-card .qa-body .qa-title {
        font-size: 1.02rem;
        font-weight: 600;
        color: var(--text);
        margin: 0 0 0.4rem 0;
        line-height: 1.4;
    }
    .qa-card .qa-body .qa-title a {
        color: var(--text);
        transition: color var(--transition);
    }
    .qa-card .qa-body .qa-title a:hover {
        color: var(--primary);
    }
    .qa-card .qa-body .qa-excerpt {
        font-size: 0.88rem;
        color: var(--text-muted);
        margin: 0 0 0.5rem 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.5;
    }
    .qa-card .qa-body .qa-meta {
        display: flex;
        align-items: center;
        gap: 1rem;
        font-size: 0.78rem;
        color: var(--text-muted);
    }
    .qa-card .qa-body .qa-meta .tag {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary);
        padding: 0.15rem 0.6rem;
        border-radius: 999px;
        font-weight: 500;
        font-size: 0.75rem;
    }
    /* ========== FAQ Section ========== */
    .faq-section {
        padding: 2rem 0 3rem 0;
    }
    .faq-section .section-head {
        margin-bottom: 1.5rem;
    }
    .faq-section .section-head h2 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text);
        margin: 0;
    }
    .faq-section .section-head p {
        margin: 0.4rem 0 0 0;
        color: var(--text-muted);
        font-size: 0.95rem;
    }
    .faq-accordion {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }
    .faq-item {
        border-bottom: 1px solid var(--border);
    }
    .faq-item:last-child {
        border-bottom: none;
    }
    .faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 1.25rem 1.5rem;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text);
        text-align: left;
        cursor: pointer;
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 0.75rem;
        transition: background var(--transition), color var(--transition);
        line-height: 1.5;
    }
    .faq-question:hover {
        background: var(--primary-light);
        color: var(--primary-dark);
    }
    .faq-question:focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: -3px;
    }
    .faq-question .faq-icon {
        flex-shrink: 0;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: var(--primary-light);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8rem;
        transition: transform var(--transition), background var(--transition);
    }
    .faq-question[aria-expanded="true"] .faq-icon {
        transform: rotate(45deg);
        background: var(--primary);
        color: #fff;
    }
    .faq-answer {
        padding: 0 1.5rem 1.25rem 1.5rem;
        font-size: 0.95rem;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    .faq-answer p {
        margin: 0;
    }
    /* ========== Category Entry ========== */
    .category-entry-section {
        padding: 0 0 3rem 0;
    }
    .category-entry-section .section-head {
        margin-bottom: 1.25rem;
    }
    .category-entry-section .section-head h2 {
        font-size: 1.45rem;
        font-weight: 700;
        color: var(--text);
        margin: 0;
    }
    .cat-entry-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1rem;
    }
    .cat-entry-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 1.25rem 1.1rem;
        display: flex;
        align-items: center;
        gap: 0.85rem;
        transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
        box-shadow: var(--shadow-sm);
    }
    .cat-entry-card:hover {
        box-shadow: var(--shadow-md);
        border-color: var(--primary-light);
        transform: translateY(-3px);
    }
    .cat-entry-card .cat-entry-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: var(--primary-light);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
        flex-shrink: 0;
    }
    .cat-entry-card .cat-entry-title {
        font-size: 0.92rem;
        font-weight: 600;
        color: var(--text);
        line-height: 1.3;
    }
    .cat-entry-card a {
        color: var(--text);
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 0.85rem;
        width: 100%;
    }
    .cat-entry-card a:hover {
        color: var(--primary-dark);
    }
    /* ========== Related Articles ========== */
    .related-section {
        padding: 0 0 3rem 0;
    }
    .related-section .section-head {
        margin-bottom: 1.25rem;
    }
    .related-section .section-head h2 {
        font-size: 1.45rem;
        font-weight: 700;
        color: var(--text);
        margin: 0;
    }
    .related-list {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }
    .related-list-item {
        display: flex;
        align-items: center;
        gap: 1rem;
        padding: 1rem 1.25rem;
        border-bottom: 1px solid var(--border);
        transition: background var(--transition);
    }
    .related-list-item:last-child {
        border-bottom: none;
    }
    .related-list-item:hover {
        background: var(--primary-light);
    }
    .related-list-item .related-arrow {
        color: var(--primary);
        flex-shrink: 0;
        font-size: 0.85rem;
    }
    .related-list-item .related-text {
        flex: 1;
        min-width: 0;
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text);
    }
    .related-list-item a {
        color: var(--text);
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        width: 100%;
    }
    .related-list-item a:hover {
        color: var(--primary);
    }
    .related-list-item .related-tag {
        flex-shrink: 0;
        display: inline-block;
        background: var(--accent-light);
        color: var(--accent);
        padding: 0.2rem 0.65rem;
        border-radius: 999px;
        font-size: 0.75rem;
        font-weight: 600;
    }
    /* ========== CTA Section ========== */
    .cta-section {
        padding: 0 0 4rem 0;
    }
    .cta-panel {
        background: linear-gradient(135deg, var(--primary-dark) 0%, #0A3D1F 100%);
        border-radius: var(--radius-lg);
        padding: 2.5rem 2rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 1.5rem;
        box-shadow: var(--shadow-lg);
        position: relative;
        overflow: hidden;
    }
    .cta-panel::before {
        content: "";
        position: absolute;
        right: -60px;
        top: -60px;
        width: 200px;
        height: 200px;
        background: rgba(245,166,35,0.15);
        border-radius: 50%;
        pointer-events: none;
    }
    .cta-panel .cta-text {
        flex: 1;
        min-width: 260px;
        position: relative;
        z-index: 1;
    }
    .cta-panel .cta-text h2 {
        color: #fff;
        font-size: 1.45rem;
        font-weight: 700;
        margin: 0 0 0.6rem 0;
    }
    .cta-panel .cta-text p {
        color: rgba(255,255,255,0.82);
        margin: 0;
        font-size: 0.95rem;
        max-width: 520px;
    }
    .cta-panel .cta-btn-group {
        display: flex;
        gap: 0.75rem;
        flex-shrink: 0;
        position: relative;
        z-index: 1;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.7rem 1.4rem;
        border-radius: var(--radius-sm);
        font-size: 0.92rem;
        font-weight: 600;
        border: none;
        cursor: pointer;
        text-decoration: none;
        transition: background var(--transition), color var(--transition), box-shadow var(--transition);
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--accent);
        color: #1F2937;
    }
    .btn-primary:hover {
        background: #E0960E;
        color: #1F2937;
        box-shadow: 0 4px 14px rgba(245,166,35,0.4);
    }
    .btn-outline-light {
        background: transparent;
        color: #fff;
        border: 2px solid rgba(255,255,255,0.4);
    }
    .btn-outline-light:hover {
        background: rgba(255,255,255,0.1);
        color: #fff;
        border-color: rgba(255,255,255,0.7);
    }
    /* ========== Footer ========== */
    .site-footer {
        background: #0F1A14;
        color: rgba(255,255,255,0.78);
        padding: 3rem 0 1.5rem 0;
        margin-top: 1rem;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
        gap: 2rem;
        margin-bottom: 2rem;
    }
    .footer-brand .footer-logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        margin-bottom: 0.8rem;
    }
    .footer-brand .footer-logo .logo-icon {
        width: 34px;
        height: 34px;
        background: var(--primary);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1rem;
    }
    .footer-brand .footer-logo span {
        font-size: 1.05rem;
        font-weight: 700;
        color: #fff;
    }
    .footer-brand p {
        font-size: 0.88rem;
        margin: 0;
        line-height: 1.6;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 0.95rem;
        font-weight: 600;
        margin: 0 0 0.8rem 0;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-col ul li {
        margin-bottom: 0.45rem;
    }
    .footer-col ul li a {
        color: rgba(255,255,255,0.65);
        font-size: 0.86rem;
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        transition: color var(--transition);
    }
    .footer-col ul li a:hover {
        color: var(--accent);
    }
    .footer-col ul li a i {
        font-size: 0.7rem;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.12);
        padding-top: 1.25rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 0.75rem;
        font-size: 0.82rem;
    }
    .footer-bottom .footer-copy {
        color: rgba(255,255,255,0.5);
    }
    .footer-bottom .footer-disclaimer {
        color: rgba(255,255,255,0.5);
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }
    .footer-bottom .footer-disclaimer i {
        color: var(--accent);
        font-size: 0.8rem;
    }
    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        :root {
            --section-gap: 2.75rem;
        }
        .stats-strip {
            grid-template-columns: repeat(2, 1fr);
        }
        .qa-card-list {
            grid-template-columns: 1fr;
        }
        .cat-entry-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
    }
    @media (max-width: 640px) {
        :root {
            --section-gap: 2.25rem;
        }
        .header-inner {
            flex-wrap: wrap;
        }
        .nav-hamburger {
            display: block;
            order: 1;
        }
        .nav-logo {
            order: 0;
            flex: 0 1 auto;
        }
        .nav-search {
            order: 2;
            flex-basis: 100%;
            min-width: 100%;
        }
        .nav-menu-wrapper {
            display: none;
            order: 3;
            flex-direction: column;
            align-items: flex-start;
        }
        .nav-menu-wrapper.is-open {
            display: flex;
        }
        .nav-menu {
            flex-direction: column;
            align-items: flex-start;
            width: 100%;
            gap: 0;
        }
        .nav-menu > li {
            width: 100%;
        }
        .nav-menu > li > a {
            display: block;
            width: 100%;
            padding: 0.7rem 0.25rem;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }
        .category-header h1 {
            font-size: 1.6rem;
        }
        .category-header .cat-desc {
            font-size: 0.95rem;
        }
        .stats-strip {
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
        }
        .stat-block {
            padding: 1rem 0.75rem;
        }
        .stat-block .stat-num {
            font-size: 1.4rem;
        }
        .qa-card {
            flex-direction: column;
            gap: 0.75rem;
        }
        .qa-card .qa-thumb {
            width: 100%;
            height: 150px;
        }
        .faq-question {
            padding: 1rem 1rem;
            font-size: 0.94rem;
        }
        .faq-answer {
            padding: 0 1rem 1rem 1rem;
            font-size: 0.9rem;
        }
        .cat-entry-grid {
            grid-template-columns: 1fr;
            gap: 0.6rem;
        }
        .cta-panel {
            flex-direction: column;
            text-align: center;
            padding: 1.75rem 1.25rem;
        }
        .cta-panel .cta-btn-group {
            width: 100%;
            justify-content: center;
            flex-wrap: wrap;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .related-list-item {
            padding: 0.85rem 1rem;
        }
        .related-list-item .related-text {
            font-size: 0.88rem;
        }
    }
    @media (max-width: 480px) {
        .stats-strip {
            grid-template-columns: 1fr;
        }
        .stat-block .stat-num {
            font-size: 1.2rem;
        }
    }