/* roulang page: index */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }
        @media (max-width: 1024px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-card);
        }
        .btn-secondary {
            background: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.25);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-outline-sm {
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            border: 1px solid var(--primary);
            color: var(--primary);
            background: #FFFFFF;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }
        .btn-outline-sm:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 72px 0 64px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.88);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 16px;
        }
        .hero-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: var(--body);
            max-width: 620px;
            margin: 0 auto 28px;
        }
        .hero-search-wrap {
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
        }
        .hero-search-input {
            width: 100%;
            padding: 14px 20px;
            padding-right: 120px;
            border: 1px solid var(--border-soft);
            border-radius: 100px;
            font-size: 15px;
            background: #FFFFFF;
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .hero-search-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(45, 109, 204, 0.1);
            outline: none;
        }
        .hero-search-btn {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: 100px;
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
        }
        .hero-search-btn:hover {
            background: var(--primary-dark);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            color: var(--body);
            font-size: 13px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 100px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .hero-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* Section 通用 */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--body);
            max-width: 720px;
            margin-bottom: 36px;
        }
        .section-sm {
            padding: 56px 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-sm {
                padding: 40px 0;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
        }

        /* 指标看板 */
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .metric-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
            border: 1px solid var(--border-soft);
        }
        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .metric-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .metric-number.accent-num {
            color: var(--accent);
        }
        .metric-label {
            font-size: 14px;
            color: var(--body);
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .metric-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-card {
                padding: 18px 14px;
            }
            .metric-number {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .metric-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 服务矩阵 */
        .service-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 20px;
        }
        .service-card-large {
            grid-row: span 2;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .service-card-large:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .service-card-small {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .service-card-small:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .service-img {
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16 / 9;
            width: 100%;
        }
        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .service-card-large:hover .service-img img,
        .service-card-small:hover .service-img img {
            transform: scale(1.03);
        }
        .service-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 8px;
        }
        .service-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .service-desc {
            font-size: 15px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .service-features {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 14px;
        }
        .service-feature-tag {
            font-size: 12px;
            color: var(--body);
            background: #F3F4F6;
            padding: 4px 10px;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
            .service-card-large {
                grid-row: auto;
            }
        }

        /* 深度内容区 */
        .deep-section {
            background: var(--bg-soft);
            border-radius: 16px;
            padding: 40px;
        }
        .deep-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .deep-text {
            font-size: 16px;
            line-height: 1.85;
            color: var(--body);
            margin-bottom: 16px;
        }
        .deep-text:last-child {
            margin-bottom: 0;
        }
        .deep-img-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 20px;
        }
        .deep-img-grid img {
            border-radius: 10px;
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            box-shadow: var(--shadow-card);
        }
        @media (max-width: 768px) {
            .deep-section {
                padding: 24px 18px;
            }
            .deep-img-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 对比表格 */
        .compare-table-wrap {
            overflow-x: auto;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            min-width: 640px;
        }
        .compare-table th {
            background: var(--primary-light);
            color: var(--ink);
            font-weight: 600;
            text-align: left;
            padding: 16px 20px;
            font-size: 14px;
            border-bottom: 1px solid var(--border-soft);
            white-space: nowrap;
        }
        .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid #F3F4F6;
            color: var(--body);
            line-height: 1.6;
            vertical-align: top;
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table .dimension-label {
            font-weight: 600;
            color: var(--ink);
            white-space: nowrap;
        }
        .compare-table .highlight-cell {
            color: var(--primary);
            font-weight: 600;
        }

        /* 新闻 */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-item {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .news-date {
            font-size: 13px;
            color: #9CA3AF;
            white-space: nowrap;
            min-width: 88px;
            font-weight: 500;
        }
        .news-body {
            flex: 1;
            min-width: 220px;
        }
        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-summary {
            font-size: 14px;
            color: var(--body);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        @media (max-width: 768px) {
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 16px 18px;
            }
        }

        /* 精选分类 */
        .category-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .category-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            color: var(--ink);
            font-size: 14px;
            font-weight: 500;
            padding: 10px 20px;
            border-radius: 100px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .category-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .category-chip .chip-count {
            font-size: 12px;
            color: #9CA3AF;
            font-weight: 400;
        }

        /* 品牌介绍 */
        .brand-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--primary);
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: flex-start;
        }
        .brand-text {
            font-size: 16px;
            line-height: 1.85;
            color: var(--body);
            flex: 1;
            min-width: 260px;
        }
        .brand-text strong {
            color: var(--ink);
        }
        .brand-img-wrap {
            width: 200px;
            flex-shrink: 0;
            border-radius: 10px;
            overflow: hidden;
            aspect-ratio: 4 / 3;
        }
        .brand-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .brand-card {
                flex-direction: column;
                padding: 24px 20px;
            }
            .brand-img-wrap {
                width: 100%;
                aspect-ratio: 16 / 9;
            }
        }

        /* 版本更新 */
        .changelog-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .changelog-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid #F3F4F6;
            align-items: flex-start;
        }
        .changelog-item:last-child {
            border-bottom: none;
        }
        .changelog-version {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            min-width: 76px;
            background: var(--primary-light);
            padding: 4px 10px;
            border-radius: 6px;
            text-align: center;
        }
        .changelog-content {
            flex: 1;
        }
        .changelog-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .changelog-desc {
            font-size: 14px;
            color: var(--body);
            line-height: 1.65;
        }

        /* 保障图标条 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .guarantee-item {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .guarantee-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .guarantee-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 12px;
        }
        .guarantee-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .guarantee-desc {
            font-size: 13px;
            color: var(--body);
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: 10px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item.open {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            transition: color var(--transition), background var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
            background: #FAFBFC;
        }
        .faq-badge {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .faq-toggle {
            margin-left: auto;
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
        }
        .faq-toggle::before,
        .faq-toggle::after {
            content: '';
            position: absolute;
            background: var(--body);
            border-radius: 2px;
            transition: transform var(--transition);
        }
        .faq-toggle::before {
            width: 14px;
            height: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-toggle::after {
            width: 2px;
            height: 14px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-item.open .faq-toggle::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px 60px;
            font-size: 15px;
            line-height: 1.75;
            color: var(--body);
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* 转化表单 */
        .form-section {
            background: var(--bg-soft);
            border-radius: 16px;
            padding: 40px;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 32px;
            align-items: start;
        }
        .form-info-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .form-info-text {
            font-size: 15px;
            line-height: 1.75;
            color: var(--body);
            margin-bottom: 10px;
        }
        .form-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            font-size: 15px;
            color: var(--ink);
            background: #FFFFFF;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(45, 109, 204, 0.1);
            outline: none;
        }
        .form-textarea {
            resize: vertical;
            min-height: 88px;
        }
        @media (max-width: 768px) {
            .form-section {
                padding: 24px 18px;
            }
            .form-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--footer-dark);
            color: #D1D5DB;
            padding: 32px 0;
            font-size: 14px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
            text-align: center;
        }
        .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .footer-logo .logo-highlight {
            color: #60A5FA;
        }
        .footer-copy {
            color: #9CA3AF;
            font-size: 13px;
            line-height: 1.6;
        }
        .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .footer-links a {
            color: #9CA3AF;
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-sep {
            color: #4B5563;
        }

        /* 面包屑（分类页用，首页不显示具体） */
        .breadcrumb {
            font-size: 14px;
            color: var(--body);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .separator {
            margin: 0 6px;
            color: #9CA3AF;
        }

/* roulang page: category2 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
            z-index: 60;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 7px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            padding: 20px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #9CA3AF;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--ink);
            font-weight: 600;
        }
        .category-hero {
            background: linear-gradient(135deg, var(--primary-light) 0%, #F0F5FF 40%, #FFFFFF 100%);
            border-bottom: 1px solid var(--border-soft);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            top: -120px;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(45, 109, 204, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            font-size: 34px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .category-hero p {
            font-size: 17px;
            line-height: 1.85;
            color: var(--body);
            max-width: 720px;
            margin-bottom: 0;
        }
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-soft);
        }
        .section-title {
            font-size: 26px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--body);
            max-width: 720px;
            margin-bottom: 40px;
            line-height: 1.8;
        }
        .interleave-grid {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .interleave-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: stretch;
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .interleave-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .interleave-item.reverse .interleave-image {
            order: 2;
        }
        .interleave-item.reverse .interleave-content {
            order: 1;
        }
        .interleave-image {
            min-height: 280px;
            background-size: cover;
            background-position: center;
            position: relative;
            aspect-ratio: 16/9;
        }
        .interleave-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .interleave-content {
            padding: 28px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .interleave-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .interleave-content p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 4px;
            white-space: nowrap;
        }
        .stat-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 48px;
        }
        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .stat-card .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-card .stat-number.accent {
            color: var(--accent);
        }
        .stat-card .stat-label {
            font-size: 14px;
            color: var(--body);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .process-step {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 28px 22px;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
        }
        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.75;
        }
        .faq-section {
            background: var(--bg-soft);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: 10px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--ink);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-badge {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
        }
        .faq-question .faq-arrow {
            margin-left: auto;
            flex-shrink: 0;
            color: #9CA3AF;
            transition: transform var(--transition);
            font-size: 18px;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.85;
            margin: 0;
            padding-top: 4px;
            border-top: 1px solid #F3F4F6;
        }
        .cta-section {
            background: #FFFFFF;
            padding: 72px 0;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 2fr 3fr;
            gap: 40px;
            align-items: start;
        }
        .cta-info h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .cta-info p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .cta-form {
            background: var(--bg-soft);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            font-size: 15px;
            background: #FFFFFF;
            color: var(--ink);
            transition: border-color var(--transition), box-shadow var(--transition);
            box-sizing: border-box;
            appearance: none;
            -webkit-appearance: none;
        }
        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 109, 204, 0.12);
            outline: none;
        }
        .form-textarea {
            min-height: 110px;
            resize: vertical;
        }
        .form-select {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .site-footer {
            background: var(--footer-dark);
            color: #D1D5DB;
            padding: 48px 0 32px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .footer-logo .logo-highlight {
            color: var(--primary);
        }
        .footer-copy {
            font-size: 14px;
            line-height: 1.9;
            color: #9CA3AF;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
        }
        .footer-links a {
            color: #D1D5DB;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }
        .footer-sep {
            color: #6B7280;
        }
        @media (max-width: 1024px) {
            .interleave-item {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .section-title {
                font-size: 21px;
            }
            .interleave-item {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .interleave-item.reverse .interleave-image {
                order: 1;
            }
            .interleave-item.reverse .interleave-content {
                order: 2;
            }
            .interleave-image {
                min-height: 200px;
                aspect-ratio: 16/9;
            }
            .interleave-content {
                padding: 22px 18px;
            }
            .interleave-content h3 {
                font-size: 18px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stat-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 26px;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .cta-form {
                padding: 24px 18px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .site-footer {
                padding: 36px 0 24px;
            }
        }
        @media (max-width: 520px) {
            .stat-strip {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 13px;
                padding: 14px 0;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .section-title {
                font-size: 19px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }
        @media (max-width: 1024px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
        }
        .btn-accent:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: #FFFFFF;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            border-radius: 4px;
            padding: 4px 10px;
        }
        .section-title {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: var(--body);
            max-width: 700px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            padding: 20px 0;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #9CA3AF;
        }
        .breadcrumb .current {
            color: var(--ink);
            font-weight: 500;
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 16px 20px;
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: 10px;
            box-shadow: 0 1px 4px rgba(17, 24, 39, 0.04);
        }
        .filter-tag {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 20px;
            background: #F3F4F6;
            color: var(--body);
            cursor: default;
            transition: all var(--transition);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #FFFFFF;
        }
        .filter-tag:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .service-card {
            display: flex;
            flex-direction: row;
            align-items: stretch;
            gap: 24px;
            padding: 24px;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition), transform var(--transition);
            margin-bottom: 20px;
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .service-card-img {
            flex-shrink: 0;
            width: 200px;
            border-radius: 10px;
            overflow: hidden;
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .service-card-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .service-card-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .service-card-content p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .service-card-content .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 12px;
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: 10px;
            margin-bottom: 8px;
            overflow: hidden;
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 20px 24px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-soft);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
        }
        .faq-question .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition);
            font-size: 14px;
            color: #9CA3AF;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 20px 64px;
            font-size: 15px;
            color: var(--body);
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .form-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            border: 1px solid var(--border-soft);
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            font-size: 15px;
            color: var(--ink);
            background: #FFFFFF;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .site-footer {
            background: var(--footer-dark);
            color: #D1D5DB;
            padding: 48px 0 32px;
            margin-top: 64px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .footer-logo .logo-highlight {
            color: var(--primary);
        }
        .footer-copy {
            font-size: 14px;
            line-height: 1.8;
            color: #9CA3AF;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #D1D5DB;
        }
        .footer-links a {
            color: #D1D5DB;
        }
        .footer-links a:hover {
            color: var(--primary-light);
            text-decoration: underline;
        }
        .footer-sep {
            color: #6B7280;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 22px;
            }
            .service-card {
                flex-direction: column;
                padding: 16px;
            }
            .service-card-img {
                width: 100%;
            }
            .service-card-img img {
                aspect-ratio: 16/9;
            }
            .form-card {
                padding: 20px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px 16px 46px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 20px;
            }
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }
        .hero-bento {
            display: grid;
            grid-template-columns: 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 16px;
            padding: 40px 0;
        }
        .hero-bento-main {
            grid-column: 1 / -1;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            border: 1px solid var(--border-soft);
            position: relative;
            overflow: hidden;
        }
        .hero-bento-main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .hero-bento-small {
            background: var(--primary-light);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
        }
        .hero-bento-cta {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            color: #FFFFFF;
        }
        @media (max-width: 768px) {
            .hero-bento {
                grid-template-columns: 1fr;
                padding: 24px 0;
            }
            .hero-bento-main {
                grid-column: 1;
                padding: 24px;
            }
        }
        .timeline-step {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 20px;
        }
        .timeline-step .step-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .timeline-step .step-content h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .timeline-step .step-content p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.7;
        }
        .comparison-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            padding: 24px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .comparison-row {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 8px;
            padding: 12px 0;
            border-bottom: 1px solid #F3F4F6;
        }
        .comparison-row.header-row {
            font-weight: 600;
            color: var(--ink);
            border-bottom: 2px solid var(--primary-light);
        }
        .comparison-row .col-label {
            font-weight: 500;
            color: var(--ink);
        }
        .comparison-row .col-before {
            color: var(--body);
        }
        .comparison-row .col-after {
            color: var(--primary);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .comparison-row {
                grid-template-columns: 1fr;
                gap: 4px;
                padding: 10px 0;
            }
        }
        .news-card {
            display: flex;
            gap: 16px;
            align-items: center;
            padding: 16px 20px;
            background: #FFFFFF;
            border-radius: 10px;
            border: 1px solid var(--border-soft);
            box-shadow: 0 1px 4px rgba(17, 24, 39, 0.04);
            margin-bottom: 10px;
            transition: box-shadow var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-card);
        }
        .news-date {
            flex-shrink: 0;
            font-size: 12px;
            color: #9CA3AF;
            min-width: 70px;
        }
        .news-info h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .news-info p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .news-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }
        @media (max-width: 1023px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo .logo-highlight {
            color: var(--primary);
        }
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }
        @media (max-width: 1023px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }
        @media (max-width: 767px) {
            .nav-logo {
                font-size: 18px;
            }
            .nav-container {
                min-height: 60px;
            }
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background-color: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #9CA3AF;
        }
        .breadcrumb .current {
            color: var(--ink);
            font-weight: 500;
        }

        /* 卡片 */
        .brand-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            overflow: hidden;
            border: 1px solid var(--border-soft);
        }
        .brand-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .brand-card-featured {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            overflow: hidden;
            border: 1px solid var(--border-soft);
        }
        .brand-card-featured:hover {
            box-shadow: var(--shadow-card-hover);
        }
        @media (max-width: 767px) {
            .brand-card-featured {
                grid-template-columns: 1fr;
                gap: 0;
            }
        }
        .brand-card-featured .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .brand-card-featured .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .brand-card-featured:hover .card-image img {
            transform: scale(1.03);
        }
        .brand-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .brand-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .brand-card:hover .card-image img {
            transform: scale(1.03);
        }

        /* 标签 */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 500;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 4px;
            white-space: nowrap;
        }
        .badge-accent {
            background-color: #FEF3C7;
            color: var(--accent-dark);
        }

        /* FAQ */
        .faq-item {
            background: #FFFFFF;
            border-radius: 10px;
            border: 1px solid var(--border-soft);
            margin-bottom: 8px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: var(--primary-light);
        }
        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--ink);
            font-size: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-badge {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            font-size: 14px;
            font-weight: 700;
        }
        .faq-question .faq-icon {
            margin-left: auto;
            flex-shrink: 0;
            color: #9CA3AF;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
        }
        .faq-answer-inner {
            padding: 0 20px 20px 60px;
            color: var(--body);
            font-size: 15px;
            line-height: 1.75;
        }

        /* 表单 */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            font-size: 15px;
            color: var(--ink);
            background: #FFFFFF;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 109, 204, 0.1);
        }
        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            margin-bottom: 6px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--footer-dark);
            color: #D1D5DB;
            padding: 40px 0;
            margin-top: 80px;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            text-align: center;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .footer-logo .logo-highlight {
            color: var(--accent);
        }
        .footer-copy {
            font-size: 14px;
            line-height: 1.8;
            color: #9CA3AF;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
        }
        .footer-links a {
            color: #D1D5DB;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-sep {
            color: #6B7280;
        }
        @media (max-width: 767px) {
            .site-footer {
                padding: 32px 0;
                margin-top: 56px;
            }
            .footer-container {
                gap: 12px;
            }
            .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        /* 分类页特有 */
        .category-hero {
            padding: 48px 0 32px;
            background: var(--bg-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .category-hero .subtitle {
            font-size: 16px;
            color: var(--body);
            max-width: 720px;
            line-height: 1.75;
        }
        @media (max-width: 767px) {
            .category-hero {
                padding: 32px 0 24px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
        }

        /* 网格卡片高度差异 */
        .grid-card-tall .card-image {
            aspect-ratio: 16/10;
        }
        .grid-card-medium .card-image {
            aspect-ratio: 16/9;
        }
        .grid-card-short .card-image {
            aspect-ratio: 16/12;
        }

        /* 区块标题 */
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--body);
            line-height: 1.75;
            max-width: 720px;
        }
        @media (max-width: 767px) {
            .section-title {
                font-size: 20px;
            }
        }

        /* 深度内容区 */
        .deep-content {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            padding: 40px;
        }
        @media (max-width: 767px) {
            .deep-content {
                padding: 24px 20px;
            }
        }

        /* 滚动效果 */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 400ms ease, transform 400ms ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category4 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        @media (max-width: 1023px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
            z-index: 2;
        }

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

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

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
            z-index: 2;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }

        .mobile-menu a:hover {
            color: var(--primary);
        }

        @media (max-width: 1023px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }

        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25);
        }

        .btn-accent:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            padding: 20px 0 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--body);
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            color: #9CA3AF;
        }

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

        /* 分类页头部 */
        .cat-header {
            padding: 32px 0 28px;
            border-bottom: 1px solid var(--border-soft);
            margin-bottom: 40px;
        }

        .cat-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.2;
            margin-bottom: 12px;
        }

        .cat-header .cat-desc {
            font-size: 16px;
            color: var(--body);
            max-width: 860px;
            line-height: 1.85;
        }

        /* 时间线 */
        .timeline-section {
            padding: 16px 0 56px;
        }

        .timeline-wrapper {
            position: relative;
            padding-left: 32px;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-soft);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 32px;
            padding-left: 24px;
        }

        .timeline-item:last-child {
            padding-bottom: 8px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 109, 204, 0.12);
            z-index: 1;
        }

        .timeline-item .tl-card {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 28px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .timeline-item .tl-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .timeline-item .tl-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        .timeline-item .tl-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 10px;
        }

        .timeline-item .tl-summary {
            font-size: 15px;
            color: var(--body);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .timeline-item .tl-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .timeline-item .tl-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 10px;
            border-radius: 4px;
            white-space: nowrap;
        }

        .timeline-item .tl-img {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 14px;
            aspect-ratio: 21 / 9;
            background-color: var(--bg-soft);
        }

        .timeline-item .tl-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 767px) {
            .timeline-wrapper {
                padding-left: 20px;
            }
            .timeline-item {
                padding-left: 14px;
            }
            .timeline-item::before {
                left: -20px;
                width: 10px;
                height: 10px;
                top: 8px;
            }
            .timeline-wrapper::before {
                left: 5px;
            }
            .timeline-item .tl-card {
                padding: 18px 16px;
            }
            .timeline-item .tl-title {
                font-size: 17px;
            }
        }

        /* 指标卡 */
        .tech-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin: 32px 0 48px;
        }

        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .stat-card .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--body);
            line-height: 1.5;
        }

        @media (max-width: 1023px) {
            .tech-stats {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .tech-stats {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-section {
            padding: 48px 0 56px;
            background-color: var(--bg-soft);
        }

        .faq-heading {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 28px;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 10px;
            margin-bottom: 8px;
            overflow: hidden;
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-item.active {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-badge {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms ease, padding 200ms ease;
            padding: 0 22px;
            font-size: 15px;
            color: var(--body);
            line-height: 1.85;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }

        .faq-item.active .faq-question {
            color: var(--primary);
        }

        /* CTA */
        .cta-section {
            padding: 56px 0 64px;
        }

        .cta-card {
            background: linear-gradient(135deg, #FFFFFF 0%, #F0F5FE 100%);
            border: 1px solid var(--border-soft);
            border-radius: 16px;
            padding: 48px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: var(--shadow-card);
        }

        .cta-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .cta-content p {
            font-size: 15px;
            color: var(--body);
            max-width: 520px;
            line-height: 1.8;
        }

        @media (max-width: 767px) {
            .cta-card {
                flex-direction: column;
                text-align: center;
                padding: 32px 20px;
                align-items: stretch;
            }
            .cta-content p {
                max-width: 100%;
            }
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--footer-dark);
            padding: 40px 0 36px;
            color: #D1D5DB;
        }

        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .footer-logo .logo-highlight {
            color: #60A5FA;
        }

        .footer-copy {
            font-size: 13px;
            line-height: 1.9;
            color: #9CA3AF;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
        }

        .footer-links a {
            color: #D1D5DB;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-sep {
            color: #6B7280;
        }

        /* 技术能力标签行 */
        .tech-capabilities {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 16px 0 24px;
        }

        .tech-cap {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            transition: background-color var(--transition);
        }

        .tech-cap:hover {
            background-color: #D6E4FB;
        }

        /* 技术优势列表 */
        .advantage-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin: 32px 0 48px;
        }

        .advantage-item {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
        }

        .advantage-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .advantage-item p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.75;
        }

        @media (max-width: 1023px) {
            .advantage-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .advantage-list {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        @media (max-width: 1023px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }

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

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

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }

        .mobile-menu a:hover {
            color: var(--primary);
        }

        @media (max-width: 1023px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }

        @media (max-width: 767px) {
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
                font-size: 18px;
            }
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }

        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
        }

        .btn-accent:active {
            transform: translateY(0);
        }

        .btn-outline {
            background-color: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            padding: 20px 0 12px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb a:hover {
            text-decoration: underline;
        }

        .breadcrumb-sep {
            color: #9CA3AF;
        }

        .breadcrumb-current {
            color: var(--ink);
            font-weight: 500;
        }

        /* 分类标题区 */
        .category-hero {
            background: linear-gradient(135deg, var(--primary-light) 0%, #FFFFFF 55%, #F7F9FC 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            margin-bottom: 32px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
        }

        .category-hero h1 {
            font-size: 32px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
        }

        .category-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--body);
            max-width: 800px;
            margin-bottom: 20px;
        }

        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 14px;
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
        }

        /* 主内容区 + 侧边栏布局 */
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 32px;
            align-items: start;
            margin-bottom: 64px;
        }

        @media (max-width: 1023px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* 主列表 */
        .main-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .list-card {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .list-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .list-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #9CA3AF;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }

        .list-card-badge {
            display: inline-block;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        .list-card-summary {
            font-size: 15px;
            line-height: 1.75;
            color: var(--body);
            margin-bottom: 16px;
        }

        .list-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .read-more-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition), gap var(--transition);
        }

        .read-more-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
            gap: 8px;
        }

        /* 侧边栏 */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 84px;
        }

        @media (max-width: 1023px) {
            .sidebar {
                position: static;
                top: auto;
            }
        }

        .sidebar-widget {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        .sidebar-widget-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .search-box {
            display: flex;
            gap: 8px;
        }

        .search-box input {
            flex: 1;
            padding: 10px 14px;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--ink);
            background: #FFFFFF;
            transition: border-color var(--transition);
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }

        .search-box button {
            padding: 10px 18px;
            background: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition);
            white-space: nowrap;
        }

        .search-box button:hover {
            background: var(--primary-dark);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            display: inline-block;
            padding: 6px 14px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition);
        }

        .tag-cloud a:hover {
            background: var(--primary);
            color: #FFFFFF;
        }

        .mini-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .mini-list-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .mini-list-thumb {
            width: 64px;
            height: 48px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--primary-light);
        }

        .mini-list-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 4px;
        }

        .mini-list-info h4 a:hover {
            color: var(--primary);
        }

        .mini-list-info span {
            font-size: 12px;
            color: #9CA3AF;
        }

        /* 服务能力区 */
        .service-section {
            background: var(--bg-soft);
            border-radius: var(--radius-card);
            padding: 56px 40px;
            margin-bottom: 64px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--body);
            line-height: 1.75;
            margin-bottom: 32px;
            max-width: 720px;
        }

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

        @media (max-width: 1023px) {
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 767px) {
            .capability-grid {
                grid-template-columns: 1fr;
            }
        }

        .capability-card {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .capability-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .capability-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .capability-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--body);
        }

        /* 流程区 */
        .process-section {
            margin-bottom: 64px;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        @media (max-width: 1023px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 767px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        .process-step {
            background: #FFFFFF;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            position: relative;
            text-align: center;
        }

        .process-step-num {
            display: inline-block;
            width: 36px;
            height: 36px;
            line-height: 36px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--body);
        }

        /* FAQ */
        .faq-section {
            margin-bottom: 64px;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 48px 40px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 24px;
        }

        .faq-item {
            border: 1px solid var(--border-soft);
            border-radius: 10px;
            background: #FFFFFF;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item.open {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            background: none;
            border: none;
            text-align: left;
            width: 100%;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: var(--bg-soft);
        }

        .faq-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 20px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--body);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        /* CTA区 */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            margin-bottom: 64px;
            color: #FFFFFF;
        }

        .cta-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .cta-text p {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.9);
            max-width: 520px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-white {
            background: #FFFFFF;
            color: var(--primary);
        }

        .btn-white:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-outline-white {
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: var(--footer-dark);
            color: #D1D5DB;
            padding: 32px 0;
        }

        .footer-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .footer-logo .logo-highlight {
            color: var(--accent);
        }

        .footer-copy {
            font-size: 14px;
            line-height: 1.7;
            color: #9CA3AF;
            text-align: center;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #D1D5DB;
        }

        .footer-links a {
            color: #D1D5DB;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-sep {
            color: #6B7280;
        }

        @media (max-width: 767px) {
            .footer-container {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .category-hero {
                padding: 32px 20px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .service-section {
                padding: 32px 20px;
            }
            .section-title {
                font-size: 22px;
            }
            .faq-section {
                padding: 32px 20px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .list-card {
                padding: 20px 16px;
            }
            .sidebar-widget {
                padding: 20px 16px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
        }

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

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

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }

        .mobile-menu a:hover {
            color: var(--primary);
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(45, 109, 204, 0.25);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

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

        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

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

        .btn-outline:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        /* 面包屑 */
        .breadcrumb-bar {
            background-color: var(--bg-soft);
            border-bottom: 1px solid var(--border-soft);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--body);
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            color: #9CA3AF;
            font-size: 12px;
        }

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

        /* 分类标题区 */
        .page-heading-section {
            background: linear-gradient(180deg, var(--bg-soft) 0%, #FFFFFF 100%);
            padding: 48px 0 36px;
            border-bottom: 1px solid var(--border-soft);
        }

        .page-heading-section h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .page-heading-section .subtitle {
            font-size: 17px;
            color: var(--body);
            max-width: 720px;
            line-height: 1.7;
        }

        /* 标签徽章 */
        .badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 4px;
            font-size: 12px;
            padding: 3px 10px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .badge-accent {
            background-color: #FEF3C7;
            color: #B45309;
        }

        .badge-date {
            font-size: 12px;
            color: #9CA3AF;
            letter-spacing: 0.3px;
        }

        /* 头条大卡 */
        .headline-card {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 0;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            margin-bottom: 32px;
            transition: box-shadow var(--transition);
            border: 1px solid var(--border-soft);
        }

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

        .headline-card .headline-img {
            position: relative;
            min-height: 280px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .headline-card .headline-img .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(17, 24, 39, 0) 40%, rgba(17, 24, 39, 0.4) 100%);
        }

        .headline-card .headline-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
        }

        .headline-card .headline-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
        }

        .headline-card .headline-body .headline-summary {
            font-size: 15px;
            color: var(--body);
            line-height: 1.75;
        }

        .headline-card .headline-body .headline-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* 小卡网格 */
        .mini-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }

        .mini-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .mini-card .mini-thumb {
            width: 100%;
            aspect-ratio: 16/9;
            border-radius: 8px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            margin-bottom: 6px;
        }

        .mini-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.4;
        }

        .mini-card .mini-summary {
            font-size: 14px;
            color: var(--body);
            line-height: 1.65;
            flex-grow: 1;
        }

        .mini-card .mini-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: auto;
        }

        /* 段落后推荐 */
        .recommend-section {
            background: var(--bg-soft);
            border-radius: var(--radius-card);
            padding: 32px;
            margin-bottom: 56px;
            border: 1px solid var(--border-soft);
        }

        .recommend-section .section-label {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .recommend-section .section-label i {
            color: var(--accent);
            font-size: 18px;
        }

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

        .recommend-item {
            background: #FFFFFF;
            border-radius: 10px;
            padding: 20px;
            border: 1px solid var(--border-soft);
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .recommend-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.45;
        }

        .recommend-item p {
            font-size: 13px;
            color: var(--body);
            line-height: 1.6;
            flex-grow: 1;
        }

        .recommend-item .rec-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .recommend-item .rec-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* FAQ */
        .faq-section {
            padding: 56px 0;
            background: #FFFFFF;
        }

        .faq-section h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 28px;
            text-align: center;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 10px;
            border: 1px solid var(--border-soft);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item.active {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
            border-color: var(--primary-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 20px;
            cursor: pointer;
            background: #FFFFFF;
            border: none;
            width: 100%;
            text-align: left;
            font-weight: 600;
            font-size: 16px;
            color: var(--ink);
            transition: background var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--bg-soft);
        }

        .faq-question .faq-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            font-size: 13px;
            font-weight: 700;
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }

        .faq-question .faq-arrow {
            margin-left: auto;
            color: #9CA3AF;
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 20px 20px 60px;
            font-size: 15px;
            color: var(--body);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            padding: 56px 0;
            background: var(--bg-soft);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .cta-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .cta-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-info p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .form-field {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .form-field label {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
        }

        .form-field input,
        .form-field select,
        .form-field textarea {
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--ink);
            background: #FFFFFF;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 109, 204, 0.08);
            outline: none;
        }

        .form-field textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-submit-btn {
            align-self: flex-start;
        }

        /* 页脚 */
        .site-footer {
            background: var(--footer-dark);
            color: #E5E7EB;
            padding: 36px 0 28px;
        }

        .footer-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .footer-logo .logo-highlight {
            color: #60A5FA;
        }

        .footer-copy {
            font-size: 13px;
            color: #9CA3AF;
            line-height: 1.8;
            text-align: center;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #9CA3AF;
        }

        .footer-links a {
            color: #D1D5DB;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #60A5FA;
            text-decoration: underline;
        }

        .footer-sep {
            color: #4B5563;
        }

        /* 杂志型布局增强样式 */
        .magazine-main {
            padding: 40px 0 0;
        }

        .headline-tag-group {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .section-divider {
            height: 1px;
            background: var(--border-soft);
            margin: 48px 0 32px;
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }

            .nav-left,
            .nav-right {
                gap: 14px;
            }

            .nav-link {
                font-size: 14px;
            }

            .headline-card {
                grid-template-columns: 1fr;
            }

            .headline-card .headline-img {
                min-height: 240px;
                aspect-ratio: 16/7;
            }

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

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

            .cta-card {
                grid-template-columns: 1fr;
                padding: 32px;
            }

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

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .nav-left,
            .nav-right {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .nav-container {
                justify-content: space-between;
            }

            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }

            .page-heading-section {
                padding: 32px 0 24px;
            }

            .page-heading-section h1 {
                font-size: 22px;
            }

            .page-heading-section .subtitle {
                font-size: 15px;
            }

            .headline-card .headline-body {
                padding: 20px;
            }

            .headline-card .headline-body h2 {
                font-size: 20px;
            }

            .headline-card .headline-body .headline-summary {
                font-size: 14px;
            }

            .mini-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .recommend-section {
                padding: 20px;
            }

            .cta-card {
                padding: 24px;
                gap: 24px;
            }

            .cta-info h3 {
                font-size: 20px;
            }

            .faq-section {
                padding: 40px 0;
            }

            .faq-section h2 {
                font-size: 22px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }

            .faq-answer-inner {
                padding: 0 16px 16px 44px;
                font-size: 14px;
            }

            .footer-container {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }

            .footer-links {
                justify-content: center;
            }

            .magazine-main {
                padding: 24px 0 0;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .mini-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (min-width: 1024px) {
            .nav-left,
            .nav-right {
                display: flex;
            }

            .mobile-menu-btn {
                display: none;
            }

            .mobile-menu {
                display: none !important;
            }
        }

@media (max-width: 767px) {
                        .deep-grid {
                            grid-template-columns: 1fr !important;
                            gap: 16px !important;
                        }
                    }

/* roulang page: category7 */
:root {
            --primary: #2D6DCC;
            --primary-dark: #2458A6;
            --primary-light: #E8F0FE;
            --accent: #F59E0B;
            --accent-dark: #D97706;
            --bg-soft: #F7F9FC;
            --ink: #111827;
            --body: #4B5563;
            --border-soft: #E5E7EB;
            --footer-dark: #1F2937;
            --radius-card: 14px;
            --radius-btn: 9px;
            --shadow-card: 0 4px 16px rgba(17, 24, 39, 0.06);
            --shadow-card-hover: 0 8px 28px rgba(45, 109, 204, 0.12);
            --shadow-nav: 0 1px 4px rgba(17, 24, 39, 0.06);
            --transition: 180ms ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.78;
            color: var(--body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        @media (max-width: 1024px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            border-bottom-color: var(--primary);
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: color var(--transition);
            z-index: 10;
        }

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

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

        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            background: none;
            border: none;
            cursor: pointer;
            gap: 5px;
            z-index: 10;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border-soft);
            box-shadow: var(--shadow-card);
            padding: 8px 16px 16px;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 49;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid #F3F4F6;
            color: var(--ink);
        }

        .mobile-menu a:hover {
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 17px;
            }
            .mobile-menu-btn {
                width: 40px;
                height: 44px;
            }
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            color: #FFFFFF;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }

        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.28);
        }

        .btn-accent:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-outline {
            background-color: #FFFFFF;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 7px;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
            padding: 16px 0;
        }

        .breadcrumb a {
            color: var(--body);
            transition: color var(--transition);
        }

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

        .breadcrumb-sep {
            color: #9CA3AF;
            user-select: none;
        }

        .breadcrumb-current {
            color: var(--primary);
            font-weight: 500;
        }

        /* 标签 */
        .tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 4px;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .tag:hover {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .tag-accent {
            background-color: #FEF3C7;
            color: #D97706;
        }

        .tag-accent:hover {
            background-color: var(--accent);
            color: #FFFFFF;
        }

        /* 资源表格样式 */
        .resource-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: #FFFFFF;
        }

        .resource-table thead {
            background-color: var(--primary-light);
        }

        .resource-table th {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-dark);
            text-align: left;
            padding: 16px 20px;
            letter-spacing: 0.3px;
            border-bottom: 2px solid var(--border-soft);
        }

        .resource-table tbody tr {
            border-bottom: 1px solid var(--border-soft);
            transition: background-color var(--transition);
        }

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

        .resource-table tbody tr:hover {
            background-color: #FAFBFE;
        }

        .resource-table td {
            padding: 18px 20px;
            vertical-align: middle;
            font-size: 14px;
            color: var(--body);
        }

        .resource-icon {
            width: 46px;
            height: 46px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--primary-light);
            color: var(--primary);
            flex-shrink: 0;
        }

        .resource-icon svg {
            width: 22px;
            height: 22px;
        }

        .resource-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 4px;
        }

        .resource-desc {
            font-size: 13px;
            color: var(--body);
            line-height: 1.6;
        }

        .resource-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 7px;
            padding: 8px 14px;
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .resource-download-btn:hover {
            background-color: var(--primary);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .resource-download-btn:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        /* 移动响应表格 */
        @media (max-width: 768px) {
            .resource-table thead {
                display: none;
            }
            .resource-table,
            .resource-table tbody,
            .resource-table tr,
            .resource-table td {
                display: block;
                width: 100%;
            }
            .resource-table tr {
                padding: 16px;
                border: 1px solid var(--border-soft);
                border-radius: var(--radius-card);
                margin-bottom: 12px;
                background: #FFFFFF;
            }
            .resource-table td {
                padding: 6px 0;
                border: none;
            }
            .resource-table td:first-child {
                display: flex;
                align-items: center;
                gap: 12px;
            }
            .resource-table td[data-label]::before {
                content: attr(data-label);
                display: block;
                font-size: 12px;
                font-weight: 600;
                color: var(--primary);
                margin-bottom: 2px;
                letter-spacing: 0.3px;
            }
        }

        /* FAQ */
        .faq-item {
            background: #FFFFFF;
            border-radius: 10px;
            border: 1px solid var(--border-soft);
            margin-bottom: 10px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            width: 100%;
            padding: 18px 20px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 6px;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-question .faq-arrow {
            margin-left: auto;
            font-size: 14px;
            color: #9CA3AF;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 320ms ease, padding 320ms ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.75;
            margin: 0;
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--footer-dark);
            color: #D1D5DB;
            padding: 40px 0 32px;
            margin-top: 72px;
        }

        .footer-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .footer-logo .logo-highlight {
            color: #60A5FA;
        }

        .footer-copy {
            font-size: 13px;
            line-height: 1.7;
            color: #9CA3AF;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #9CA3AF;
        }

        .footer-links a {
            color: #D1D5DB;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-sep {
            color: #4B5563;
        }

        /* CTA 区域 */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-light) 0%, #F0F6FF 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: space-between;
        }

        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 12px;
        }

        .cta-section p {
            font-size: 15px;
            color: var(--body);
            margin: 0;
            max-width: 520px;
        }

        /* 特色资源卡片 */
        .feature-resource-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: all var(--transition);
            border: 1px solid var(--border-soft);
        }

        .feature-resource-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }

        .feature-resource-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            background-color: var(--primary-light);
            color: var(--primary);
        }

        .feature-resource-card .feature-icon svg {
            width: 24px;
            height: 24px;
        }

        .feature-resource-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .feature-resource-card p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.65;
            margin: 0;
        }

        /* 过渡动画 */
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 分类说明区域 */
        .category-intro {
            display: flex;
            flex-wrap: wrap;
            gap: 36px;
            align-items: center;
            background: #FFFFFF;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px;
            border: 1px solid var(--border-soft);
        }

        .category-intro-text {
            flex: 1 1 55%;
            min-width: 280px;
        }

        .category-intro-text h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.25;
            margin: 0 0 16px;
        }

        .category-intro-text p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.8;
            margin: 0 0 12px;
        }

        .category-intro-image {
            flex: 1 1 35%;
            min-width: 260px;
            border-radius: 12px;
            overflow: hidden;
            aspect-ratio: 16/10;
            background-color: var(--primary-light);
        }

        .category-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 768px) {
            .category-intro {
                flex-direction: column;
                padding: 24px;
            }
            .category-intro-text h1 {
                font-size: 24px;
            }
            .category-intro-image {
                width: 100%;
            }
            .cta-section {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-section p {
                max-width: 100%;
            }
        }