/* 基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
        }
        
        a {
            text-decoration: none;
            color: #0088cc;
            transition: color 0.3s;
        }
        
        a:hover {
            color: #006699;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* 头部样式 */
        header {
            background-color: #0088cc;
            color: white;
            padding: 15px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo a {
            color: white;
            font-size: 24px;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 28px;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 20px;
        }
        
        nav ul li a {
            color: white;
            font-weight: 500;
            padding: 5px 10px;
            border-radius: 4px;
        }
        
        nav ul li a:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            padding: 10px 0;
            background-color: #f0f0f0;
            font-size: 14px;
        }
        
        .breadcrumb a {
            color: #666;
        }
        
        .breadcrumb a:hover {
            color: #0088cc;
        }
        
        /* 主要内容区域 */
        main {
            display: flex;
            margin: 20px 0;
        }
        
        .content {
            flex: 3;
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            margin-right: 20px;
        }
        
        .sidebar {
            flex: 1;
        }
        
        .widget {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            margin-bottom: 20px;
        }
        
        .widget-title {
            font-size: 18px;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #0088cc;
            color: #0088cc;
            display: flex;
            align-items: center;
        }
        
        .widget-title i {
            margin-right: 8px;
        }
        
        /* 文章列表样式 */
        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        
        .article-item {
            border: 1px solid #eee;
            border-radius: 8px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .article-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .article-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        
        .article-content {
            padding: 15px;
        }
        
        .article-title {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        
        .article-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: #888;
            margin-bottom: 10px;
        }
        
        .article-meta i {
            margin-right: 5px;
        }
        
        .article-description {
            font-size: 14px;
            color: #666;
            line-height: 1.5;
        }
        
        /* 热门文章样式 */
        .hot-article-list {
            list-style: none;
        }
        
        .hot-article-item {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: center;
        }
        
        .hot-article-item:last-child {
            border-bottom: none;
        }
        
        .hot-article-item i {
            color: #ff6b6b;
            margin-right: 10px;
        }
        
        /* 友情链接样式 */
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .friend-links a {
            background-color: #f5f5f5;
            padding: 8px 15px;
            border-radius: 4px;
            font-size: 14px;
            transition: background-color 0.3s;
        }
        
        .friend-links a:hover {
            background-color: #e9e9e9;
        }
        
        /* 底部样式 */
        footer {
            background-color: #333;
            color: #ccc;
            padding: 30px 0 15px;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        
        .footer-section {
            flex: 1;
            margin-right: 20px;
        }
        
        .footer-section:last-child {
            margin-right: 0;
        }
        
        .footer-title {
            font-size: 18px;
            margin-bottom: 15px;
            color: white;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 8px;
        }
        
        .footer-links a {
            color: #ccc;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            padding-top: 15px;
            border-top: 1px solid #444;
            font-size: 14px;
        }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: #0088cc;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 20px;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
            z-index: 1000;
        }
        
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        
        .back-to-top:hover {
            background-color: #006699;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            main {
                flex-direction: column;
            }
            
            .content {
                margin-right: 0;
                margin-bottom: 20px;
            }
            
            .footer-content {
                flex-direction: column;
            }
            
            .footer-section {
                margin-right: 0;
                margin-bottom: 20px;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 15px;
                justify-content: center;
            }
            
            nav ul li {
                margin: 0 10px;
            }
            
            .article-list {
                grid-template-columns: 1fr;
            }
        }