/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e2a3a;
            --primary-light: #2a3a4e;
            --secondary: #b8975a;
            --secondary-light: #d4b47a;
            --accent: #c97d4a;
            --bg: #f7f5f0;
            --bg-card: #ffffff;
            --bg-alt: #ebe8e0;
            --bg-dark: #141c28;
            --text: #1e1e1e;
            --text-light: #6b6b6b;
            --text-white: #f5f3ef;
            --border: #e0dcd4;
            --border-light: #eeeae2;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--text);
        }

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

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            pointer-events: none;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(30, 42, 58, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 60px;
            padding: 8px 28px;
            width: 100%;
            max-width: 780px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.20);
            transition: var(--transition);
        }
        .nav-dock:hover {
            background: rgba(30, 42, 58, 0.94);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .nav-logo i {
            color: var(--secondary);
            font-size: 24px;
        }
        .nav-logo span {
            background: linear-gradient(135deg, #f5f3ef, var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.10);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--secondary);
            box-shadow: 0 2px 12px rgba(184, 151, 90, 0.30);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-cta .btn-ghost {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 30px;
            transition: var(--transition);
        }
        .nav-cta .btn-ghost:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-cta .btn-solid {
            background: var(--secondary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 2px 12px rgba(184, 151, 90, 0.25);
        }
        .nav-cta .btn-solid:hover {
            background: var(--secondary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(184, 151, 90, 0.35);
        }
        .nav-toggle {
            display: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 80px;
            left: 16px;
            right: 16px;
            z-index: 999;
            background: rgba(30, 42, 58, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            padding: 20px 24px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.30);
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.80);
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-menu a.active {
            color: #fff;
            background: var(--secondary);
        }
        .mobile-menu .mobile-cta {
            margin-top: 10px;
            padding: 14px 20px;
            border-radius: 12px;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            text-align: center;
        }
        .mobile-menu .mobile-cta:hover {
            background: var(--secondary-light);
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 560px;
            margin: 12px auto 0;
            line-height: 1.6;
        }
        .section-title .badge-sub {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 140px 24px 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.02);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg {
            transform: scale(1.00);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(145deg, rgba(20, 28, 40, 0.82) 0%, rgba(20, 28, 40, 0.40) 50%, rgba(20, 28, 40, 0.82) 100%);
        }
        .hero-wave {
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            color: var(--bg);
            fill: var(--bg);
        }
        .hero-wave svg {
            width: 100%;
            height: 100%;
            display: block;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
        }
        .hero-content .hero-badge {
            display: inline-block;
            background: rgba(184, 151, 90, 0.20);
            color: var(--secondary-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 22px;
            border-radius: 30px;
            border: 1px solid rgba(184, 151, 90, 0.25);
            letter-spacing: 1px;
            margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-content h1 {
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -1px;
            line-height: 1.15;
        }
        .hero-content h1 span {
            background: linear-gradient(135deg, var(--secondary-light), #e8d5a8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: clamp(16px, 2vw, 20px);
            color: rgba(245, 243, 239, 0.75);
            margin: 20px auto 36px;
            max-width: 600px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            background: var(--secondary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: 40px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(184, 151, 90, 0.30);
        }
        .hero-actions .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(184, 151, 90, 0.40);
        }
        .hero-actions .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            font-size: 16px;
            font-weight: 500;
            padding: 14px 36px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-item .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .hero-stats .stat-item .num i {
            color: var(--secondary);
            margin-right: 6px;
            font-size: 22px;
        }
        .hero-stats .stat-item .label {
            font-size: 13px;
            color: rgba(245, 243, 239, 0.55);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }

        /* ===== 板块通用 ===== */
        section {
            padding: 80px 0;
        }
        section.bg-alt {
            background: var(--bg-alt);
        }
        section.bg-white {
            background: var(--bg-card);
        }

        /* ===== 特色板块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--secondary);
            font-size: 26px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 分类入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .cat-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .cat-img {
            transform: scale(1.04);
        }
        .category-card .cat-body {
            padding: 24px 24px 28px;
        }
        .category-card .cat-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .category-card .cat-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .category-card .cat-body .cat-tag {
            display: inline-block;
            margin-top: 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--secondary);
            letter-spacing: 0.5px;
        }
        .category-card .cat-body .cat-tag i {
            margin-left: 4px;
            font-size: 12px;
            transition: var(--transition);
        }
        .category-card:hover .cat-body .cat-tag i {
            transform: translateX(4px);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -1px;
        }
        .stat-card .stat-num .suffix {
            font-size: 20px;
            color: var(--secondary);
        }
        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .news-card .news-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .news-card .news-body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .news-card .news-body .news-meta .cat-badge {
            background: var(--bg-alt);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-weight: 500;
            font-size: 12px;
        }
        .news-card .news-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
            color: var(--text);
        }
        .news-card .news-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }
        .news-card .news-body .news-link {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .news-body .news-link i {
            font-size: 12px;
            transition: var(--transition);
        }
        .news-card:hover .news-body .news-link i {
            transform: translateX(4px);
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            font-size: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
        }
        .news-empty i {
            font-size: 40px;
            color: var(--border);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== 流程板块 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 24px 32px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--secondary);
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            transition: var(--transition);
        }
        .step-card:hover .step-num {
            background: var(--secondary);
            color: #fff;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--secondary);
        }
        .faq-question {
            padding: 20px 28px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-question i {
            color: var(--secondary);
            font-size: 14px;
            transition: var(--transition);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 28px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 28px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(245, 243, 239, 0.70);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btn {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            padding: 16px 44px;
            border-radius: 40px;
            transition: var(--transition);
            box-shadow: 0 4px 24px rgba(184, 151, 90, 0.30);
        }
        .cta-section .cta-btn:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 36px rgba(184, 151, 90, 0.40);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(245, 243, 239, 0.70);
            padding: 48px 0 32px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-text i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(245, 243, 239, 0.55);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(245, 243, 239, 0.55);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(245, 243, 239, 0.40);
        }
        .footer-bottom a {
            color: rgba(245, 243, 239, 0.50);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta .btn-ghost,
            .nav-cta .btn-solid {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .nav-dock {
                padding: 6px 18px;
                max-width: 94%;
            }
            .hero {
                padding: 120px 20px 60px;
                min-height: 90vh;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 40px;
            }
            .hero-stats .stat-item .num {
                font-size: 22px;
            }
            section {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 28px;
            }
            .section-title p {
                font-size: 15px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-num {
                font-size: 28px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section .cta-btn {
                padding: 14px 32px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .nav-dock {
                padding: 4px 14px;
                border-radius: 40px;
            }
            .nav-logo {
                font-size: 16px;
            }
            .nav-logo i {
                font-size: 18px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
            }
            .hero-stats .stat-item .num {
                font-size: 18px;
            }
            .hero-stats .stat-item .label {
                font-size: 11px;
            }
            .section-title h2 {
                font-size: 24px;
            }
            .feature-card {
                padding: 28px 20px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .stat-num {
                font-size: 22px;
            }
            .faq-question {
                padding: 16px 20px;
                font-size: 14px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .footer-inner {
                gap: 20px;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .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: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --bg-body: #f7f8fa;
            --bg-card: #ffffff;
            --bg-section-alt: #eef1f5;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2233;
            --text-secondary: #4a5568;
            --text-muted: #8a94a6;
            --text-light: #ffffff;
            --border-light: #e2e6ed;
            --border-focus: #2a5a8c;
            --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 16px 48px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
            --header-height: 80px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
        }

        /* ========== Header / Dock Nav ========== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 24px;
            pointer-events: none;
        }
        .nav-dock {
            max-width: 960px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border: 1px solid rgba(255,255,255,0.5);
            box-shadow: 0 8px 32px rgba(0,0,0,0.08);
            border-radius: 60px;
            padding: 8px 20px 8px 24px;
            pointer-events: auto;
            transition: var(--transition);
        }
        .nav-dock:hover { box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .nav-logo i { color: var(--accent); font-size: 1.5rem; }
        .nav-logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
        .nav-links a.active {
            color: var(--text-light);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26,58,92,0.25);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .btn-ghost {
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            border: 1.5px solid var(--border-light);
            background: transparent;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-ghost:hover { border-color: var(--primary); background: rgba(26,58,92,0.04); color: var(--primary); }
        .btn-solid {
            padding: 8px 24px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            box-shadow: 0 4px 14px rgba(232,184,48,0.35);
            transition: var(--transition);
            text-decoration: none;
            border: none;
        }
        .btn-solid:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,184,48,0.45); color: #fff; }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--primary); padding: 4px 8px; border-radius: 8px; }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15,26,46,0.7);
            backdrop-filter: blur(8px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .mobile-menu.open { display: flex; opacity: 1; pointer-events: auto; }
        .mobile-menu a {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 40px;
            text-decoration: none;
            transition: var(--transition);
        }
        .mobile-menu a:hover { background: rgba(255,255,255,0.12); }
        .mobile-menu a.active { background: var(--accent); color: var(--primary); }
        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 24px;
            color: #fff;
            font-size: 2rem;
            background: none;
            border: none;
        }

        /* ===== Hero / Banner (Article) ===== */
        .article-banner {
            position: relative;
            padding: 100px 0 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            margin-top: -16px;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a { color: rgba(255,255,255,0.7); text-decoration: none; }
        .article-banner .breadcrumb a:hover { color: var(--accent); }
        .article-banner .breadcrumb span { color: var(--accent); }
        .article-banner .category-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .article-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 6px; color: var(--accent); }

        /* ===== Main Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 44px;
            border: 1px solid var(--border-light);
        }
        .article-body .featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            object-fit: cover;
            max-height: 460px;
        }
        .article-body .lead {
            font-size: 1.2rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
            padding-left: 20px;
            border-left: 4px solid var(--accent);
        }
        .article-body p {
            margin-bottom: 20px;
            color: var(--text-primary);
            line-height: 1.8;
        }
        .article-body h2 {
            font-size: 1.7rem;
            margin: 40px 0 16px;
            color: var(--primary);
        }
        .article-body h3 {
            font-size: 1.3rem;
            margin: 32px 0 12px;
            color: var(--primary-light);
        }
        .article-body ul, .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 10px;
            line-height: 1.7;
            list-style: disc;
        }
        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 28px;
            background: var(--bg-section-alt);
            border-radius: var(--radius-sm);
            border-left: 4px solid var(--accent);
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body .content-image {
            margin: 28px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            padding: 6px 16px;
            border-radius: 40px;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span { font-weight: 600; color: var(--text-secondary); font-size: 0.9rem; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            border: 1px solid var(--border-light);
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
        }
        .sidebar-list-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-list-item:last-child { border-bottom: none; }
        .sidebar-list-item img {
            width: 72px;
            height: 54px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-list-item .info { flex: 1; }
        .sidebar-list-item .info a {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
            line-height: 1.4;
        }
        .sidebar-list-item .info a:hover { color: var(--accent); }
        .sidebar-list-item .info .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .sidebar-cta {
            text-align: center;
        }
        .sidebar-cta p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .sidebar-cta .btn-solid { display: inline-block; padding: 12px 32px; }

        /* ===== Related / After Article ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-section-alt);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 36px;
            text-align: center;
        }
        .related-section .section-title span { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 20px 22px;
        }
        .related-card .card-body .cat {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin: 8px 0 10px;
        }
        .related-card .card-body h4 a { color: var(--text-primary); }
        .related-card .card-body h4 a:hover { color: var(--accent); }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 10px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 60px 0 40px;
            background: var(--bg-card);
        }
        .faq-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 40px;
        }
        .faq-section .section-title span { color: var(--accent); }
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: var(--bg-body);
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover { background: var(--bg-section-alt); }
        .faq-question i { color: var(--accent); transition: transform 0.3s; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-answer.open {
            padding: 16px 24px 20px;
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-solid {
            font-size: 1.05rem;
            padding: 14px 40px;
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(232,184,48,0.4);
        }
        .cta-section .btn-solid:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(232,184,48,0.5); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 30px;
            flex-shrink: 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-text i { color: var(--accent); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.7; color: rgba(255,255,255,0.6); max-width: 320px; }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Utilities ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }

        /* ===== Not Found ===== */
        .not-found-container {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-container i {
            font-size: 4rem;
            color: var(--accent);
            margin-bottom: 24px;
        }
        .not-found-container h2 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .not-found-container p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .not-found-container .btn-solid {
            display: inline-block;
            padding: 12px 32px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(2,1fr); }
            .footer-inner { grid-template-columns: repeat(2,1fr); }
        }
        @media (max-width: 768px) {
            .site-header { top: 12px; padding: 0 12px; }
            .nav-dock { padding: 6px 12px 6px 16px; border-radius: 40px; gap: 8px; }
            .nav-links { display: none; }
            .nav-cta { display: none; }
            .nav-toggle { display: block; }
            .article-banner { padding: 80px 0 40px; }
            .article-banner h1 { font-size: 2rem; }
            .article-body { padding: 28px 20px; }
            .article-body h2 { font-size: 1.4rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .article-banner h1 { font-size: 1.6rem; }
            .article-meta { gap: 12px; font-size: 0.85rem; flex-direction: column; align-items: flex-start; }
            .article-body { padding: 20px 16px; }
            .article-body .lead { font-size: 1.05rem; padding-left: 14px; }
            .related-section .section-title { font-size: 1.4rem; }
            .faq-section .section-title { font-size: 1.4rem; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }
            .sidebar-card { padding: 20px; }
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1a42;
            --secondary: #e8a87c;
            --secondary-light: #f0c8a8;
            --accent: #f4a261;
            --bg: #faf8f6;
            --bg-alt: #f0ece8;
            --bg-card: #ffffff;
            --text: #1e1e2a;
            --text-light: #5a5a6e;
            --text-muted: #8a8a9e;
            --border: #e0dbd4;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 80px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--text);
        }

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

        /* ===== Header / Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            pointer-events: none;
            padding: 0 24px;
        }
        .nav-dock {
            pointer-events: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px) saturate(1.2);
            -webkit-backdrop-filter: blur(18px) saturate(1.2);
            border-radius: 60px;
            padding: 8px 24px 8px 20px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.5);
            max-width: 1100px;
            width: 100%;
            transition: box-shadow var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 42, 108, 0.25);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-ghost {
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: all var(--transition);
            background: transparent;
        }
        .btn-ghost:hover {
            color: var(--primary);
            border-color: var(--primary-light);
            background: rgba(26, 42, 108, 0.04);
        }
        .btn-solid {
            padding: 8px 24px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border: none;
            box-shadow: 0 4px 16px rgba(26, 42, 108, 0.25);
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-solid:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 42, 108, 0.35);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== 移动端导航 ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            padding: 20px 24px 28px;
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.1);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            z-index: 999;
            flex-direction: column;
            gap: 12px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text);
            transition: background var(--transition);
        }
        .mobile-menu a:hover {
            background: rgba(26, 42, 108, 0.06);
        }
        .mobile-menu a.active {
            color: var(--primary);
            background: rgba(26, 42, 108, 0.08);
            font-weight: 600;
        }
        .mobile-menu .mobile-cta {
            display: flex;
            gap: 12px;
            margin-top: 8px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }
        .mobile-menu .mobile-cta .btn-ghost,
        .mobile-menu .mobile-cta .btn-solid {
            flex: 1;
            text-align: center;
        }

        @media (max-width: 900px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .nav-dock {
                padding: 6px 16px 6px 16px;
            }
        }

        /* ===== Banner / Hero 内页横幅 ===== */
        .page-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 60px 24px 80px;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
            letter-spacing: -0.02em;
        }
        .page-banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto 24px;
        }
        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .page-banner .banner-tags span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 260px;
                padding: 40px 16px 60px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .section-sub {
            text-align: center;
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 1rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            gap: 28px;
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        @media (max-width: 1024px) {
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .card-grid-2,
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ===== 卡片组件 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.03);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px 22px 24px;
        }
        .card-body .card-tag {
            display: inline-block;
            background: var(--secondary-light);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 30px;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-body h3 a {
            color: var(--text);
        }
        .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-body .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .card-body .card-meta i {
            margin-right: 4px;
        }

        /* ===== 特色分类卡片（大图风格） ===== */
        .feature-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            background: var(--primary-dark);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.55;
            transition: opacity var(--transition), transform var(--transition);
        }
        .feature-card:hover img {
            opacity: 0.4;
            transform: scale(1.04);
        }
        .feature-card .fc-overlay {
            position: relative;
            z-index: 2;
            padding: 30px 28px;
            width: 100%;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
        }
        .feature-card .fc-overlay .fc-tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 2px 14px;
            border-radius: 30px;
            margin-bottom: 10px;
        }
        .feature-card .fc-overlay h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .feature-card .fc-overlay p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.92rem;
            max-width: 80%;
        }
        @media (max-width: 768px) {
            .feature-card {
                min-height: 220px;
            }
            .feature-card .fc-overlay {
                padding: 20px 18px;
            }
            .feature-card .fc-overlay h3 {
                font-size: 1.1rem;
            }
            .feature-card .fc-overlay p {
                max-width: 100%;
                font-size: 0.85rem;
            }
        }

        /* ===== 列表区块 ===== */
        .list-group {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-card);
            padding: 18px 22px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.02);
        }
        .list-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }
        .list-item .li-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--secondary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
        }
        .list-item .li-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .list-item .li-content p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* ===== 数据/统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            padding: 32px 16px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.02);
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 12px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 740px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid rgba(0, 0, 0, 0.02);
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-question .faq-icon {
            font-size: 1.1rem;
            color: var(--primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 80px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-solid {
            background: #fff;
            color: var(--primary);
            font-size: 1.05rem;
            padding: 14px 40px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }
        .cta-section .btn-solid:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 16px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .logo-text i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 900px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 分割线 ===== */
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
            border-radius: 4px;
            margin: 0 auto 16px;
        }
        .divider-left {
            margin: 0 0 16px;
        }

        /* ===== 按钮通用 ===== */
        .btn-outline {
            display: inline-block;
            padding: 10px 28px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--primary);
            border: 2px solid var(--primary-light);
            background: transparent;
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== 图片装饰 ===== */
        .img-rounded {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-card);
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 20px 0 0;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        @media (max-width: 768px) {
            .breadcrumb {
                padding-left: 16px;
                padding-right: 16px;
                font-size: 0.82rem;
            }
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 480px) {
            .nav-logo span {
                font-size: 1rem;
            }
            .nav-logo i {
                font-size: 1.2rem;
            }
            .nav-dock {
                padding: 6px 12px 6px 14px;
            }
        }