/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0F1E3D;
            --color-primary-light: #1A2E5A;
            --color-accent: #D4A84B;
            --color-accent-hover: #C49A3E;
            --color-accent-light: #F0DFB0;
            --color-bg: #F5F7FA;
            --color-bg-alt: #FFFFFF;
            --color-bg-dark: #0A1528;
            --color-text: #1A1A2E;
            --color-text-light: #5A6A7E;
            --color-text-muted: #8A9AAD;
            --color-border: #E4E8EE;
            --color-success: #2A9D8F;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        /* ===== 基础 Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            overflow-x: hidden;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-primary);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--color-text-light);
        }
        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== 通用 spacing ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 50px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
            font-size: 2.2rem;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--color-text-light);
            max-width: 640px;
            margin: 0 auto 48px auto;
        }
        .divider {
            width: 60px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 4px;
            margin: 16px auto 32px auto;
        }
        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 1rem;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(212, 168, 75, 0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 75, 0.45);
            color: var(--color-primary);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(212, 168, 75, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-accent);
            border: 2px solid var(--color-accent);
        }
        .btn-outline:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-white {
            background: #fff;
            color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .btn-white:hover {
            background: var(--color-bg);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 1.1rem;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.9rem;
        }
        /* ===== 标签 / 徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 30px;
            background: var(--color-accent-light);
            color: var(--color-primary);
            letter-spacing: 0.3px;
        }
        .badge-blue {
            background: #DCE6F5;
            color: var(--color-primary-light);
        }
        .badge-green {
            background: #D4EDE9;
            color: #1A6B5E;
        }
        .tag {
            display: inline-block;
            padding: 2px 12px;
            font-size: 0.75rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            background: var(--color-bg);
            color: var(--color-text-light);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-primary);
        }
        /* ===== 卡片 ===== */
        .card {
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--color-border);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .card-body {
            padding: 24px;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .card-text {
            font-size: 0.95rem;
            color: var(--color-text-light);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .card-link {
            color: var(--color-accent-hover);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .card-link:hover {
            color: var(--color-accent);
        }
        /* ===== 网格 ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2-1 {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }
        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 30, 61, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(212, 168, 75, 0.15);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-brand i {
            color: var(--color-accent);
            font-size: 1.6rem;
        }
        .nav-brand a {
            color: #fff;
        }
        .nav-brand a:hover {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(212, 168, 75, 0.1);
        }
        .nav-links a.active {
            color: var(--color-accent);
            background: rgba(212, 168, 75, 0.12);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 4px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 30px;
            padding: 0 6px 0 18px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .nav-search:focus-within {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--color-accent);
        }
        .nav-search input {
            background: transparent;
            border: none;
            color: #fff;
            padding: 8px 0;
            font-size: 0.9rem;
            width: 140px;
            outline: none;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .nav-search button {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.5);
            padding: 8px 12px;
            cursor: pointer;
            border-radius: 50%;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--color-accent);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg-dark);
            margin-top: var(--nav-height);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
            opacity: 0.35;
            z-index: 1;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 21, 40, 0.88) 0%, rgba(15, 30, 61, 0.72) 50%, rgba(10, 21, 40, 0.88) 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 820px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 24px;
            border-radius: 30px;
            background: rgba(212, 168, 75, 0.18);
            color: var(--color-accent);
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 1px;
            border: 1px solid rgba(212, 168, 75, 0.25);
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 3.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .hero h1 span {
            color: var(--color-accent);
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px auto;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 4px;
        }
        /* ===== 核心服务 ===== */
        .services {
            background: var(--color-bg-alt);
        }
        .service-card {
            padding: 36px 28px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            transition: var(--transition);
            text-align: center;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-light);
        }
        .service-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px auto;
            border-radius: 16px;
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-primary);
        }
        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .service-card p {
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        /* ===== 分类入口 ===== */
        .category-section {
            background: var(--color-bg);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 16/9;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border);
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover img {
            transform: scale(1.05);
        }
        .category-card-overlay {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 24px;
            background: linear-gradient(transparent, rgba(10, 21, 40, 0.85));
            color: #fff;
        }
        .category-card-overlay h3 {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 4px;
        }
        .category-card-overlay p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--color-bg-alt);
        }
        .news-card {
            display: flex;
            gap: 20px;
            padding: 20px;
            background: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-accent-light);
        }
        .news-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 120px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--color-border);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-info .badge {
            align-self: flex-start;
            margin-bottom: 8px;
        }
        .news-info h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-info h4 a {
            color: var(--color-primary);
        }
        .news-info h4 a:hover {
            color: var(--color-accent-hover);
        }
        .news-info p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 8px;
        }
        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .stats-section .container {
            position: relative;
            z-index: 1;
        }
        .stats-section .section-title {
            color: #fff;
        }
        .stats-section .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(212, 168, 75, 0.25);
        }
        .stat-item .number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }
        /* ===== 使用流程 ===== */
        .process {
            background: var(--color-bg);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: 36px 20px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .process-step .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px auto;
            border-radius: 50%;
            background: var(--color-accent);
            color: var(--color-primary);
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .process-step h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg-alt);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--color-bg);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-accent-light);
        }
        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-primary);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--color-accent);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px 24px;
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0;
        }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px auto;
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 60px 0 30px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-brand {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.45);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.3);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-accent);
            color: var(--color-primary);
        }
        /* ===== 移动端导航 ===== */
        @media (max-width: 1024px) {
            .nav-search input {
                width: 100px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .section-padding {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat-number {
                font-size: 1.6rem;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-2-1 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(15, 30, 61, 0.98);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(212, 168, 75, 0.15);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-search {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .category-card {
                aspect-ratio: 4/3;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .number {
                font-size: 2rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .news-thumb {
                height: 140px;
            }
        }
        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        /* ===== 辅助类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category1 */
:root {
    --primary: #E63946;
    --primary-dark: #C1121F;
    --primary-light: #F1FAEE;
    --secondary: #1D3557;
    --secondary-light: #457B9D;
    --accent: #F4A261;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --text-dark: #1A1A2E;
    --text-muted: #6C757D;
    --text-light: #ADB5BD;
    --border: #E0E0E0;
    --border-light: #F0F0F0;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
    --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); color: var(--text-dark); background: var(--bg-white); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; padding-top: var(--header-h); }
a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ===== Header & Nav ===== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--header-h); background: var(--bg-white); border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-sm); transition: var(--transition); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; flex-wrap: nowrap; }
.nav-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-brand i { font-size: 28px; color: var(--primary); }
.nav-brand a { font-size: 22px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.5px; }
.nav-brand a:hover { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 4px; margin: 0 20px; flex-shrink: 0; }
.nav-links a { padding: 8px 18px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 500; color: var(--text-muted); transition: var(--transition); position: relative; white-space: nowrap; }
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.nav-links a.active::after { content: ''; position: absolute; bottom: -2px; left: 18px; right: 18px; height: 3px; background: var(--primary); border-radius: 2px; }
.nav-search { flex: 1; max-width: 280px; margin-left: 12px; }
.nav-search form { display: flex; border: 1px solid var(--border); border-radius: 50px; overflow: hidden; background: var(--bg-light); transition: var(--transition); }
.nav-search form:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(230,57,70,0.12); }
.nav-search input { flex: 1; border: none; padding: 8px 16px; font-size: 14px; background: transparent; outline: none; color: var(--text-dark); }
.nav-search input::placeholder { color: var(--text-light); }
.nav-search button { background: transparent; border: none; padding: 8px 16px; cursor: pointer; color: var(--text-muted); transition: var(--transition); }
.nav-search button:hover { color: var(--primary); }
.nav-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--text-dark); cursor: pointer; padding: 8px; border-radius: var(--radius-sm); transition: var(--transition); }
.nav-toggle:hover { background: var(--bg-light); }

/* ===== Page Banner ===== */
.page-banner { position: relative; padding: 100px 0 80px; background: linear-gradient(135deg, var(--secondary) 0%, #0B1A2E 100%); overflow: hidden; min-height: 320px; display: flex; align-items: center; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.15; mix-blend-mode: overlay; }
.page-banner .container { position: relative; z-index: 2; text-align: center; }
.page-banner h1 { font-size: 42px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -0.5px; }
.page-banner p { font-size: 18px; color: rgba(255,255,255,0.80); max-width: 640px; margin: 0 auto; line-height: 1.8; }
.page-banner .breadcrumb { margin-bottom: 20px; font-size: 14px; color: rgba(255,255,255,0.60); }
.page-banner .breadcrumb a { color: rgba(255,255,255,0.80); }
.page-banner .breadcrumb a:hover { color: #fff; }
.page-banner .breadcrumb span { margin: 0 6px; color: rgba(255,255,255,0.40); }

/* ===== Section Common ===== */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 52px; }
.section-header h2 { font-size: 34px; font-weight: 800; color: var(--text-dark); margin-bottom: 12px; letter-spacing: -0.3px; }
.section-header p { font-size: 17px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.section-header .tagline { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 4px 16px; border-radius: 50px; margin-bottom: 12px; letter-spacing: 0.5px; }
.bg-light { background: var(--bg-light); }

/* ===== Intro Block ===== */
.intro-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.intro-block .intro-text h3 { font-size: 28px; font-weight: 700; margin-bottom: 20px; color: var(--text-dark); }
.intro-block .intro-text p { font-size: 16px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.intro-block .intro-text ul { margin-top: 16px; }
.intro-block .intro-text ul li { padding: 8px 0 8px 28px; position: relative; font-size: 15px; color: var(--text-dark); }
.intro-block .intro-text ul li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; position: absolute; left: 0; top: 8px; color: var(--primary); font-size: 14px; }
.intro-block .intro-image { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.intro-block .intro-image img { width: 100%; height: 400px; object-fit: cover; transition: var(--transition); }
.intro-block .intro-image:hover img { transform: scale(1.02); }

/* ===== Category Cards Grid ===== */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cat-card { background: var(--bg-white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: var(--transition); cursor: pointer; }
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--primary); }
.cat-card .cat-icon { height: 100px; display: flex; align-items: center; justify-content: center; font-size: 42px; color: var(--primary); background: var(--primary-light); }
.cat-card .cat-body { padding: 20px 22px 24px; }
.cat-card .cat-body h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.cat-card .cat-body p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
.cat-card .cat-body .tag { display: inline-block; background: var(--bg-light); color: var(--text-muted); font-size: 12px; padding: 2px 12px; border-radius: 50px; margin-right: 6px; }

/* ===== Hot Events List ===== */
.event-list { display: grid; gap: 20px; }
.event-item { display: flex; gap: 24px; background: var(--bg-white); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: var(--transition); align-items: center; }
.event-item:hover { box-shadow: var(--shadow-md); border-color: var(--border); }
.event-item .event-img { width: 120px; height: 90px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; }
.event-item .event-img img { width: 100%; height: 100%; object-fit: cover; }
.event-item .event-info { flex: 1; }
.event-item .event-info h4 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.event-item .event-info p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.event-item .event-meta { display: flex; gap: 16px; margin-top: 8px; font-size: 13px; color: var(--text-light); }
.event-item .event-meta i { margin-right: 4px; }
.event-item .event-badge { background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 50px; white-space: nowrap; }

/* ===== Stats / Data Block ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { background: var(--bg-white); border-radius: var(--radius); padding: 36px 24px; text-align: center; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: var(--transition); }
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-card .stat-num { font-size: 42px; font-weight: 800; color: var(--primary); line-height: 1.2; margin-bottom: 8px; }
.stat-card .stat-label { font-size: 15px; color: var(--text-muted); font-weight: 500; }

/* ===== Guide / Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step-card { background: var(--bg-white); border-radius: var(--radius); padding: 32px 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: var(--transition); position: relative; text-align: center; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-card .step-num { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 50%; background: var(--primary-light); color: var(--primary); font-size: 22px; font-weight: 800; margin-bottom: 16px; }
.step-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border-light); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; transition: var(--transition); background: var(--bg-white); }
.faq-item summary { padding: 18px 24px; font-size: 16px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: space-between; color: var(--text-dark); transition: var(--transition); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 14px; color: var(--text-light); transition: var(--transition); }
.faq-item[open] summary::after { content: '\f077'; color: var(--primary); }
.faq-item[open] { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(230,57,70,0.08); }
.faq-item .faq-answer { padding: 0 24px 20px; font-size: 15px; color: var(--text-muted); line-height: 1.8; }

/* ===== CTA ===== */
.cta-block { background: linear-gradient(135deg, var(--secondary) 0%, #0B1A2E 100%); border-radius: var(--radius-lg); padding: 64px 48px; text-align: center; position: relative; overflow: hidden; }
.cta-block::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.08; mix-blend-mode: overlay; }
.cta-block .container { position: relative; z-index: 2; }
.cta-block h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta-block p { font-size: 17px; color: rgba(255,255,255,0.80); max-width: 560px; margin: 0 auto 28px; }
.cta-block .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-block .btn-primary { background: var(--primary); color: #fff; padding: 14px 36px; border-radius: 50px; font-size: 16px; font-weight: 700; border: none; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.cta-block .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.35); }
.cta-block .btn-outline { background: transparent; color: #fff; padding: 14px 36px; border-radius: 50px; font-size: 16px; font-weight: 600; border: 2px solid rgba(255,255,255,0.40); cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.cta-block .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.10); transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer { background: #0F1A2E; color: rgba(255,255,255,0.75); padding: 60px 0 0; margin-top: 80px; }
.site-footer .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.site-footer .footer-brand .nav-brand { margin-bottom: 16px; }
.site-footer .footer-brand .nav-brand a { color: #fff; }
.site-footer .footer-brand .nav-brand i { color: var(--primary); }
.site-footer .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.60); max-width: 340px; }
.site-footer .footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
.site-footer .footer-col a { display: block; padding: 5px 0; font-size: 14px; color: rgba(255,255,255,0.60); transition: var(--transition); }
.site-footer .footer-col a:hover { color: var(--primary); padding-left: 4px; }
.site-footer .footer-col .footer-social { display: flex; gap: 12px; }
.site-footer .footer-col .footer-social a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); font-size: 18px; color: rgba(255,255,255,0.60); transition: var(--transition); }
.site-footer .footer-col .footer-social a:hover { background: var(--primary); color: #fff; }
.site-footer .footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.40); display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .cat-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .intro-block { grid-template-columns: 1fr; gap: 32px; }
    .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .page-banner h1 { font-size: 34px; }
}
@media (max-width: 768px) {
    body { padding-top: 64px; }
    :root { --header-h: 64px; }
    .nav-links { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 16px 24px; box-shadow: var(--shadow-md); border-bottom: 1px solid var(--border); gap: 8px; }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 12px 16px; }
    .nav-links a.active::after { display: none; }
    .nav-search { max-width: 180px; }
    .nav-toggle { display: block; }
    .page-banner { padding: 60px 0 50px; min-height: 240px; }
    .page-banner h1 { font-size: 28px; }
    .page-banner p { font-size: 15px; }
    .section { padding: 48px 0; }
    .section-header h2 { font-size: 26px; }
    .cat-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .steps-grid { grid-template-columns: 1fr; gap: 20px; }
    .event-item { flex-direction: column; gap: 14px; align-items: flex-start; }
    .event-item .event-img { width: 100%; height: 180px; }
    .intro-block .intro-image img { height: 240px; }
    .site-footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .cta-block { padding: 40px 24px; }
    .cta-block h2 { font-size: 24px; }
    .faq-item summary { font-size: 15px; padding: 14px 18px; }
    .faq-item .faq-answer { padding: 0 18px 16px; font-size: 14px; }
    .nav-search { max-width: 140px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .cat-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .page-banner h1 { font-size: 24px; }
    .section-header h2 { font-size: 22px; }
    .stat-card .stat-num { font-size: 32px; }
    .nav-brand a { font-size: 18px; }
    .nav-search { max-width: 100px; }
    .nav-search input { padding: 6px 10px; font-size: 13px; }
    .nav-search button { padding: 6px 10px; }
    .site-footer .footer-bottom { flex-direction: column; gap: 6px; }
    .cta-block .btn-group { flex-direction: column; align-items: center; }
}

/* roulang page: article */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a020;
            --secondary-light: #f0b840;
            --secondary-dark: #c08010;
            --accent: #d9452b;
            --bg-light: #f7f9fc;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #7a8a9a;
            --text-white: #f0f4f8;
            --border-light: #e2e8f0;
            --border-medium: #c8d0da;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.08);
            --shadow-md: 0 6px 24px rgba(26, 58, 92, 0.12);
            --shadow-lg: 0 16px 48px rgba(26, 58, 92, 0.16);
            --shadow-glow: 0 0 30px rgba(232, 160, 32, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --nav-top-height: 44px;
        }

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

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

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

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--secondary);
            outline: none;
        }
        a:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

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

        @media screen and (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 20px rgba(26, 58, 92, 0.06);
            transition: var(--transition);
            min-height: var(--header-height);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--header-height);
            gap: 16px;
        }

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

        .nav-brand i {
            font-size: 1.8rem;
            color: var(--secondary);
            filter: drop-shadow(0 2px 8px rgba(232, 160, 32, 0.3));
        }

        .nav-brand a {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-brand a:hover {
            color: var(--primary-light);
        }

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

        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 58, 92, 0.2);
        }
        .nav-links a.active:hover {
            background: var(--primary-light);
        }

        .nav-search {
            flex-shrink: 0;
            margin-left: auto;
        }

        .nav-search form {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: 30px;
            overflow: hidden;
            transition: var(--transition);
        }
        .nav-search form:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(232, 160, 32, 0.15);
        }

        .nav-search input[type="text"] {
            border: none;
            background: transparent;
            padding: 8px 16px;
            font-size: 0.9rem;
            color: var(--text-primary);
            outline: none;
            min-width: 160px;
        }
        .nav-search input[type="text"]::placeholder {
            color: var(--text-light);
        }

        .nav-search button {
            background: transparent;
            border: none;
            padding: 8px 16px 8px 4px;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-search button:hover {
            color: var(--secondary);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 92, 0.06);
        }

        @media screen and (max-width: 820px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
                text-align: left;
            }
            .nav-search {
                margin-left: 0;
                flex: 1;
                max-width: 200px;
            }
            .nav-search input[type="text"] {
                min-width: 100px;
            }
            .nav-toggle {
                display: block;
            }
        }

        @media screen and (max-width: 520px) {
            .site-header .container {
                gap: 8px;
            }
            .nav-brand a {
                font-size: 1.1rem;
            }
            .nav-brand i {
                font-size: 1.4rem;
            }
            .nav-search input[type="text"] {
                min-width: 80px;
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .nav-search button {
                padding: 6px 10px 6px 2px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 220px;
            display: flex;
            align-items: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 160, 32, 0.12), transparent 70%);
            pointer-events: none;
        }

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

        .page-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 8px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }

        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
        }
        .page-banner .breadcrumb a:hover {
            color: var(--secondary);
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .page-banner .meta-info {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 12px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .page-banner .meta-info i {
            margin-right: 4px;
            color: var(--secondary);
        }
        .page-banner .meta-info .category-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 30px;
            background: var(--secondary);
            color: var(--primary-dark);
            font-size: 0.8rem;
            font-weight: 600;
        }

        @media screen and (max-width: 768px) {
            .page-banner {
                padding: 40px 0 32px;
                min-height: 160px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .meta-info {
                gap: 12px;
                font-size: 0.8rem;
            }
        }

        @media screen and (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.25rem;
            }
            .page-banner .meta-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        /* ===== Main Content ===== */
        .article-main {
            padding: 48px 0 60px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        @media screen and (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 260px;
                gap: 28px;
            }
        }

        @media screen and (max-width: 768px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        .article-content {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .article-content:hover {
            box-shadow: var(--shadow-md);
        }

        .article-content .content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }

        .article-content .content-body p {
            margin-bottom: 1.4em;
        }

        .article-content .content-body h2,
        .article-content .content-body h3 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            color: var(--primary-dark);
            font-weight: 700;
            line-height: 1.4;
        }

        .article-content .content-body h2 {
            font-size: 1.6rem;
        }
        .article-content .content-body h3 {
            font-size: 1.3rem;
        }

        .article-content .content-body ul,
        .article-content .content-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-content .content-body li {
            margin-bottom: 0.5em;
        }

        .article-content .content-body img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content .content-body blockquote {
            border-left: 4px solid var(--secondary);
            padding: 12px 20px;
            margin: 1.6em 0;
            background: rgba(232, 160, 32, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-content .content-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content .content-body a:hover {
            color: var(--secondary);
        }

        .article-content .content-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 0.95rem;
        }
        .article-content .content-body th,
        .article-content .content-body td {
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            text-align: left;
        }
        .article-content .content-body th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .article-content .content-body tr:nth-child(even) {
            background: var(--bg-light);
        }

        .article-content .content-body code {
            background: var(--bg-light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }

        .article-content .content-body pre {
            background: var(--bg-dark);
            color: #e8e8e8;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.6em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-content .content-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .article-not-found i {
            font-size: 3.6rem;
            color: var(--text-light);
            margin-bottom: 20px;
            display: block;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .sidebar-card:hover {
            box-shadow: var(--shadow-md);
        }

        .sidebar-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card .card-title i {
            color: var(--secondary);
        }

        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }

        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .sidebar-list a:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }
        .sidebar-list a i {
            color: var(--primary-light);
            font-size: 0.8rem;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            background: var(--bg-light);
            color: var(--text-secondary);
            font-size: 0.85rem;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-decoration: none;
        }
        .sidebar-tags .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        @media screen and (max-width: 768px) {
            .article-content {
                padding: 24px 16px;
            }
            .article-content .content-body {
                font-size: 1rem;
            }
            .article-content .content-body h2 {
                font-size: 1.35rem;
            }
            .article-content .content-body h3 {
                font-size: 1.15rem;
            }
        }

        @media screen and (max-width: 520px) {
            .article-content {
                padding: 16px 12px;
                border-radius: var(--radius-md);
            }
            .article-content .content-body {
                font-size: 0.95rem;
            }
            .sidebar-card {
                padding: 16px 14px;
            }
        }

        /* ===== Related Articles ===== */
        .related-section {
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--border-light);
        }

        .related-section .section-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section .section-title i {
            color: var(--secondary);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        @media screen and (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media screen and (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-decoration: none;
            color: inherit;
            display: block;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .related-card .card-img {
            height: 140px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

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

        .related-card .card-body h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .card-body .meta i {
            margin-right: 3px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 48px 0 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .nav-brand a {
            color: #fff;
            font-size: 1.3rem;
        }
        .site-footer .nav-brand i {
            font-size: 1.6rem;
        }

        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-top: 12px;
            line-height: 1.7;
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            position: relative;
            padding-bottom: 8px;
        }
        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--secondary);
        }

        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 6px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        .site-footer .footer-col a:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }

        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 0;
        }
        .site-footer .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }

        @media screen and (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media screen and (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mt-3 {
            margin-top: 36px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            font-size: 0.95rem;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            background: var(--secondary);
            color: var(--primary-dark);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            font-size: 0.95rem;
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: var(--primary-dark);
        }