* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Microsoft YaHei'; }
        
        /* 顶部关键词 */
        .keywords {
            background: #f5f5f5;
            padding: 10px;
            text-align: center;
            font-size: 14px;
        }
        
        /* 头部LOGO和名称 */
        .header {
            text-align: center;
            padding: 20px 0;
            border-bottom: 1px solid #eee;
        }
        .header img { max-height: 60px; }
        
        /* 导航栏 */
        .navbar {
            background: #333;
            color: white;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .nav-container {
            display: flex;
            justify-content: center;
            padding: 15px 0;
        }
        .nav-item {
            padding: 0 20px;
            color: white;
            text-decoration: none;
        }
        
        /* 综合内容区 */
        .content {
            display: flex;
            padding: 30px 5%;
        }
        .left-sidebar {
            width: 30%;
            padding-right: 30px;
        }
        .right-content {
            width: 70%;
        }
        .company-info {
            margin-bottom: 30px;
        }
        .video-container {
            width: 100%;
            margin-bottom: 20px;
        }
        video, .factory-img {
            width: 100%;
            max-height: 300px;
            object-fit: cover;
        }
        
        /* 产品展示 */
        .products {
            padding: 30px 5%;
        }
        .product-row {
            display: flex;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .product-item {
            width: 16.66%;
            padding: 10px;
            text-align: center;
        }
        .product-img {
            width: 100%;
            height: 120px;
            object-fit: contain;
            border: 1px solid #eee;
        }
        
        /* 技术文章 */
        .articles {
            padding: 30px 5%;
            background: #f9f9f9;
        }
        
        /* 页脚 */
        .footer {
            background: #333;
            color: white;
            padding: 30px 5%;
            text-align: center;
        }
        
        /* 移动端悬浮导航 */
        .mobile-nav {
            display: none;
            position: fixed;
            bottom: 0;
            width: 100%;
            background: #333;
            z-index: 100;
        }
        .mobile-nav-container {
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
        }
        .mobile-nav-item {
            color: white;
            text-decoration: none;
            text-align: center;
            font-size: 12px;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .left-sidebar { display: none; }
            .right-content { width: 100%; }
            .product-item { width: 50%; }
            .mobile-nav { display: block; }
        }
    </style>