/* 基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
        }
        
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --light-gray: #f5f7fa;
            --dark-gray: #7f8c8d;
            --border-color: #e1e8ed;
            --text-color: #333;
            --sidebar-bg: #f8f9fa;
        }
        
        body {
            color: var(--text-color);
            line-height: 1.6;
            background-color: #f9f9f9;
            font-size: 14px;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* 头部样式 */
      
        /* 文章页面主体布局 */
        .article-main {
            padding: 40px 0;
            background-color: white;
            min-height: calc(100vh - 400px);
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 15px 0;
            margin-bottom: 30px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .breadcrumb .container {
            display: flex;
            align-items: center;
        }
        
        .breadcrumb a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .breadcrumb a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        
        .breadcrumb span {
            margin: 0 8px;
            color: var(--dark-gray);
        }
        
        .breadcrumb .current {
            color: var(--dark-gray);
            font-weight: 500;
        }
        
        /* 左右布局容器 */
        .article-layout {
            display: flex;
            gap: 40px;
        }
        
        /* 左侧文章内容区域 */
        .article-content {
            flex: 1;
            min-width: 0; /* 防止内容溢出 */
        }
        
        /* 右侧侧边栏区域 */
        .article-sidebar {
            width: 320px;
            flex-shrink: 0;
        }
        
        /* 文章头部 */
        .article-header {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 2px solid var(--secondary-color);
        }
        
        .article-title {
            font-size: 32px;
            line-height: 1.3;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 15px;
            color: var(--dark-gray);
            font-size: 14px;
        }
        
        .meta-item {
            display: flex;
            align-items: center;
        }
        
        .meta-item i {
            margin-right: 5px;
            color: var(--secondary-color);
        }
        
        .article-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }
        
        .keyword {
            background-color: var(--light-gray);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--primary-color);
            transition: all 0.3s;
        }
        
        .keyword:hover {
            background-color: var(--secondary-color);
            color: white;
            cursor: pointer;
        }
        
        /* 文章正文 */
        .article-body {
            font-size: 16px;
            line-height: 1.8;
        }
        
        .article-body h2 {
            font-size: 24px;
            color: var(--primary-color);
            margin: 30px 0 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .article-body h3 {
            font-size: 20px;
            color: var(--primary-color);
            margin: 25px 0 12px;
        }
        
        .article-body p {
            margin-bottom: 20px;
            text-align: justify;
        }
        
        .article-body ul, .article-body ol {
            margin-bottom: 20px;
            padding-left: 25px;
        }
        
        .article-body li {
            margin-bottom: 8px;
        }
        
        .article-image {
            margin: 25px 0;
            text-align: center;
        }
        
        .image-placeholder {
            background-color: #e9ecef;
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-gray);
            font-size: 18px;
            border-radius: 8px;
            margin-bottom: 10px;
        }
        
        .image-caption {
            font-size: 14px;
            color: var(--dark-gray);
            text-align: center;
            font-style: italic;
        }
        
        .highlight-box {
            background-color: var(--light-gray);
            border-left: 4px solid var(--secondary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 4px;
        }
        
        .highlight-box h4 {
            color: var(--primary-color);
            margin-bottom: 10px;
            font-size: 18px;
        }
        
        /* 文章底部导航 */
        .article-navigation {
            display: flex;
            justify-content: space-between;
            margin-top: 50px;
            padding-top: 25px;
            border-top: 1px solid var(--border-color);
        }
        
        .nav-item {
            width: 48%;
            padding: 15px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            transition: all 0.3s;
            text-decoration: none;
            color: var(--text-color);
        }
        
        .nav-item:hover {
            border-color: var(--secondary-color);
            background-color: rgba(52, 152, 219, 0.05);
            transform: translateY(-3px);
        }
        
        .nav-label {
            font-size: 12px;
            color: var(--dark-gray);
            text-transform: uppercase;
            margin-bottom: 5px;
        }
        
        .nav-title {
            font-weight: 600;
            color: var(--primary-color);
        }
        
        /* 右侧侧边栏 */
        .sidebar-section {
            background-color: var(--sidebar-bg);
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 30px;
            border: 1px solid var(--border-color);
        }
        
        .sidebar-title {
            font-size: 20px;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary-color);
            position: relative;
        }
        
        .sidebar-title:after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 60px;
            height: 2px;
            background-color: var(--accent-color);
        }
        
        /* 热门文章列表 */
        .popular-articles {
            list-style: none;
        }
        .popular-articles li a{display: flex;}
        .popular-article {
            padding: 15px 0;
            border-bottom: 1px dashed var(--border-color);
            display: block;
            text-decoration: none;
            color: var(--text-color);
            transition: all 0.3s;
        }
        
        .popular-article:last-child {
            border-bottom: none;
        }
        
        .popular-article:hover {
            padding-left: 10px;
            color: var(--secondary-color);
        }
        
        .article-rank {
            display: inline-block;
            width: 24px;
            height: 24px;
            background-color: var(--light-gray);
            color: var(--primary-color);
            text-align: center;
            line-height: 24px;
            border-radius: 50%;
            margin-right: 10px;
            font-size: 12px;
            font-weight: bold;
        }
        
        .popular-article:nth-child(1) .article-rank {
            background-color: #ff6b6b;
            color: white;
        }
        
        .popular-article:nth-child(2) .article-rank {
            background-color: #ffa726;
            color: white;
        }
        
        .popular-article:nth-child(3) .article-rank {
            background-color: #42a5f5;
            color: white;
        }
        
        .popular-article-title {
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .popular-article-meta {
            font-size: 12px;
            color: var(--dark-gray);
        }
        
        /* 产品分类 */
        .category-list {
            list-style: none;
        }
        
        .category-item {
            margin-bottom: 10px;
        }
        
        .category-link {
            display: flex;
            justify-content: space-between;
            padding: 12px 15px;
            background-color: white;
            border-radius: 6px;
            text-decoration: none;
            color: var(--text-color);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        
        .category-link:hover {
            border-color: var(--secondary-color);
            background-color: rgba(52, 152, 219, 0.05);
            color: var(--secondary-color);
        }
        
        .category-count {
            background-color: var(--light-gray);
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 12px;
            color: var(--dark-gray);
        }
        
        /* 联系我们侧边栏 */
        .contact-sidebar {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1a2530 100%);
            color: white;
        }
        
        .contact-sidebar .sidebar-title {
            color: white;
            border-bottom-color: var(--secondary-color);
        }
        
        .contact-sidebar .sidebar-title:after {
            background-color: white;
        }
        
        .contact-info-sidebar p {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        
        .contact-info-sidebar i {
            margin-right: 10px;
            color: var(--secondary-color);
            flex-shrink: 0;
            margin-top: 3px;
        }
        
        .contact-btn {
            display: block;
            background-color: var(--secondary-color);
            color: white;
            text-align: center;
            padding: 12px;
            border-radius: 6px;
            text-decoration: none;
            margin-top: 20px;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .contact-btn:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        /* 页脚样式 */
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 40px 0 0;
            margin-top: 60px;
        }
        
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 30px;
        }
        
        .footer-column {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
            padding-right: 30px;
        }
        
        .footer-column h4 {
            font-size: 20px;
            margin-bottom: 20px;
            color: white;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h4:after {
            content: '';
            position: absolute;
            width: 40px;
            height: 2px;
            background-color: var(--secondary-color);
            bottom: 0;
            left: 0;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        
        .copyright {
            background-color: rgba(0, 0, 0, 0.2);
            text-align: center;
            padding: 20px 0;
            font-size: 14px;
            color: #aaa;
        }
        
        .copyright a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .article-layout {
                flex-direction: column;
            }
            
            .article-sidebar {
                width: 100%;
            }
            
            .article-title {
                font-size: 28px;
            }
        }
        
        @media (max-width: 768px) {
            .article-title {
                font-size: 24px;
            }
            
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
            
            .article-navigation {
                flex-direction: column;
                gap: 15px;
            }
            
            .nav-item {
                width: 100%;
            }
            
            .nav-links {
                flex-wrap: wrap;
            }
            
            .nav-links a {
                padding: 15px 20px;
            }
            
            .footer-column {
                padding-right: 0;
            }
        }
        
        @media (max-width: 576px) {
            .article-title {
                font-size: 22px;
            }
            
            .article-body h2 {
                font-size: 20px;
            }
            
            .article-body h3 {
                font-size: 18px;
            }
            
            .article-body {
                font-size: 15px;
            }
            
            .image-placeholder {
                height: 200px;
            }
        }