* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        :root {
            --primary-color: #2962ff;
            --primary-light: #eef4ff;
            --text-dark: #333333;
            --text-gray: #666666;
            --text-light: #999999;
            --border-color: #ebebeb;
            --card-shadow: 0 4px 12px rgba(41, 98, 255, 0.08);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }

        body {
            background-color: #f8f9fa;
            color: var(--text-dark);
            line-height: 1.6;
            /*padding-bottom: 60px;*/
        }

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

        /* 头部样式 */
        header {
            background: white;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            background: var(--primary-light);
            color: var(--primary-color);
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .logo h1 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-menu a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

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

        .nav-menu a.active {
            color: var(--primary-color);
        }

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary-color);
            border-radius: 1px;
        }

        /* Banner样式 */
        .banner {
            background: linear-gradient(135deg, #f0f5ff 0%, #e6f0ff 100%);
            padding: 60px 0;
            margin-bottom: 32px;
            border-radius: 16px;
            overflow: hidden;
            position: relative;
        }

        .banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 100%;
            height: 200%;
            background: radial-gradient(circle, rgba(41, 98, 255, 0.05) 0%, transparent 70%);
            transform: rotate(30deg);
        }

        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        .banner h1 {
            font-size: 32px;
            color: var(--text-dark);
            margin-bottom: 16px;
            font-weight: 700;
            line-height: 1.3;
        }

        .banner p {
            font-size: 18px;
            color: var(--text-gray);
            margin-bottom: 24px;
            line-height: 1.5;
        }

        .search-container {
            background: white;
            border-radius: 12px;
            padding: 8px;
            display: flex;
            width: 100%;
            max-width: 600px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }

        .search-container input {
            flex: 1;
            border: none;
            padding: 12px 16px;
            font-size: 16px;
            outline: none;
            background: transparent;
            color: var(--text-dark);
        }

        .search-container input::placeholder {
            color: var(--text-light);
        }

        .search-container button {
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 8px;
            padding: 12px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .search-container button:hover {
            background: #1a56e2;
            transform: translateY(-2px);
        }

        /* 面包屑导航 */
        .breadcrumb {
            padding: 16px 0;
            background: white;
            margin-bottom: 24px;
        }

        .breadcrumb ul {
            display: flex;
            list-style: none;
            font-size: 14px;
            color: var(--text-light);
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
        }

        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin: 0 8px;
        }

        .breadcrumb a {
            color: var(--text-gray);
            text-decoration: none;
        }

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

        .breadcrumb .active {
            color: var(--text-dark);
            font-weight: 500;
        }

        /* 主要内容区域 */
        .main-content {
            display: flex;
            gap: 32px;
            margin: 24px 0;
        }

        /* 侧边栏 */
        .sidebar {
            flex: 0 0 240px;
        }

        .sidebar-section {
            background: white;
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 24px;
            box-shadow: var(--card-shadow);
        }

        .sidebar h3 {
            font-size: 16px;
            margin-bottom: 16px;
            color: var(--text-dark);
            font-weight: 600;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border-color);
        }

        .category-list {
            list-style: none;
        }

        .category-list li {
            margin-bottom: 8px;
        }

        .category-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-gray);
            text-decoration: none;
            padding: 8px 12px;
            border-radius: 8px;
            transition: var(--transition);
            font-size: 14px;
            line-height: 1.4;
        }

        .category-list a:hover {
            background: var(--primary-light);
            color: var(--primary-color);
        }

        .category-list a.active {
            background: var(--primary-light);
            color: var(--primary-color);
            font-weight: 500;
        }

        .popular-articles {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .popular-article {
            padding: 10px 0;
        }

        .popular-article a {
            color: var(--text-dark);
            text-decoration: none;
            font-size: 14px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

        .popular-article a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }

        /* 文章列表 */
        .article-list {
            flex: 1;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }

        .section-header h2 {
            font-size: 24px;
            color: var(--text-dark);
            font-weight: 600;
        }

        .sort-options {
            display: flex;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .sort-options button {
            background: none;
            border: none;
            padding: 8px 16px;
            cursor: pointer;
            color: var(--text-gray);
            font-size: 14px;
            transition: var(--transition);
        }

        .sort-options button.active {
            background: var(--primary-light);
            color: var(--primary-color);
            font-weight: 500;
        }

        /* 文章卡片 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }

        .article-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(41, 98, 255, 0.12);
        }

        .article-tag {
            background: var(--primary-light);
            color: var(--primary-color);
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            margin: 16px 16px 0;
            width: fit-content;
        }

        .article-content {
            padding: 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-title {
            font-size: 18px;
            margin-bottom: 12px;
            line-height: 1.4;
            font-weight: 600;
        }

        .article-title a {
            color: var(--text-dark);
            text-decoration: none;
            transition: var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .article-excerpt {
            color: var(--text-gray);
            font-size: 14px;
            line-height: 1.5;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-light);
            font-size: 13px;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
            margin-top: auto;
        }

        .article-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .article-views {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            margin-top: 40px;
            gap: 8px;
        }

        .pagination a, .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            color: var(--text-gray);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .pagination .active {
            background: var(--primary-color);
            border-color: var(--primary-color);
            color: white;
            font-weight: 500;
        }

        /* 搜索结果高亮 */
        .highlight {
            background-color: #fff9db;
            color: #d32f2f;
            padding: 0 2px;
            border-radius: 3px;
            font-weight: 600;
        }

        /* 热门问题 */
        .popular-questions {
            background: white;
            border-radius: 12px;
            padding: 24px;
            margin-top: 24px;
            box-shadow: var(--card-shadow);
        }

        .popular-questions h2 {
            font-size: 20px;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .questions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 16px;
        }

        .question-card {
            padding: 16px;
            border-radius: 8px;
            transition: var(--transition);
            border-left: 3px solid var(--primary-color);
        }

        .question-card:hover {
            background: var(--primary-light);
            transform: translateX(3px);
        }

        .question-card a {
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 500;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .question-card a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .main-content {
                flex-direction: column;
            }
            
            .sidebar {
                flex: 0 0 auto;
                width: 100%;
            }
            
            .articles-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
            
            .nav-menu {
                width: 100%;
                overflow-x: auto;
                padding: 8px 0;
                white-space: nowrap;
            }
            
            .banner {
                padding: 40px 0;
            }
            
            .banner h1 {
                font-size: 26px;
            }
            
            .banner p {
                font-size: 16px;
            }
            
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            
            .sort-options {
                width: 100%;
                overflow-x: auto;
                white-space: nowrap;
            }
            
            .sort-options button {
                padding: 8px 12px;
            }
            
            .articles-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            
            .sidebar-section {
                padding: 12px;
            }
            
            .popular-questions {
                padding: 16px;
            }
            
            .search-container {
                flex-direction: column;
                border-radius: 8px;
            }
            
            .search-container input {
                width: 100%;
                margin-bottom: 8px;
            }
            
            .search-container button {
                width: 100%;
                border-radius: 8px;
            }
        }

        /* 搜索结果提示 */
        .search-result-header {
            background: white;
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 24px;
            box-shadow: var(--card-shadow);
        }

        .search-result-header h3 {
            font-size: 18px;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .search-result-header p {
            color: var(--text-gray);
            font-size: 14px;
        }

        .search-keyword {
            color: var(--primary-color);
            font-weight: 600;
        }
.highlight {
    background-color: #fff9db;
    color: #d32f2f;
    padding: 0 2px;
    border-radius: 3px;
    font-weight: 600;
}