/* 全局样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        html, body {
		  height: 100%;
		}

		body {
		  display: flex;
		  flex-direction: column;
		  margin: 0;
		}
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        ul {
            list-style: none;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .btn {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 4px;
            font-size: 14px;
            transition: all 0.3s;
        }
        
        .btn-primary {
            background-color: #3385ff;
            color: white;
        }
        
        .btn-primary:hover {
            background-color: #2a6fd1;
        }
        
        .btn-outline {
            border: 1px solid #3385ff;
            color: #3385ff;
        }
        
        .btn-outline:hover {
            background-color: #f0f7ff;
        }
        
        /* 头部样式 */
        .header {
            background-color: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            border-bottom: 1px solid #eee;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 30px;
        }
        
        .logo-text {
            font-size: 20px;
            font-weight: bold;
            margin-left: 10px;
            color: #3385ff;
        }
        
        .header-nav {
            display: flex;
            align-items: center;
        }
        
        .nav-list {
            display: flex;
        }
        
        .nav-item {
            margin: 0 15px;
            position: relative;
        }
        
        .nav-item a {
            font-size: 15px;
            font-weight: 500;
            color: #333;
            transition: color 0.3s;
        }
        
        .nav-item a:hover {
            color: #3385ff;
        }
        
        .nav-item.active a {
            color: #3385ff;
        }
        
        .header-actions {
            display: flex;
            align-items: center;
        }
        
        .login-btn {
            margin-left: 20px;
        }
        
        /* 横幅广告 */
        .banner-ad {
            background-color: #f0f7ff;
            padding: 15px 0;
            text-align: center;
            font-size: 14px;
            color: #666;
        }
        
        .banner-ad a {
            color: #3385ff;
            font-weight: 500;
        }
        
        /* 主横幅 */
        .main-banner {
            background: linear-gradient(135deg, #3385ff, #2a6fd1);
            color: white;
            padding: 60px 0;
            text-align: center;
            margin-bottom: 30px;
        }
        
        .banner-title {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 20px;
        }
        
        .banner-desc {
            font-size: 18px;
            margin-bottom: 30px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .banner-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
        }
        

        /* 文章列表 */
        .article-section {
            margin-bottom: 10px;
        }
        
        .article-list {
            background-color: #fff;
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        
        .article-item {
            padding: 15px 0;
            border-bottom: 1px solid #eee;
        }
        
        .article-item:last-child {
            border-bottom: none;
        }
        
        .article-title {
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 5px;
        }
        
        .article-meta {
            font-size: 12px;
            color: #999;
        }
        

        /* 响应式设计 */
        @media (max-width: 1024px) {
            .footer-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                padding: 10px 0;
            }
            
            .logo {
                margin-bottom: 10px;
            }
            
            .nav-list {
                flex-wrap: wrap;
                justify-content: center;
                margin: 10px 0;
            }
            
            .nav-item {
                margin: 5px 10px;
            }
            
            .header-actions {
                margin-top: 10px;
            }
            
            .main-banner {
                padding: 40px 0;
            }
            
            .banner-title {
                font-size: 28px;
            }
            
            .banner-desc {
                font-size: 16px;
            }
            
            .product-grid, .opensource-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-container {
                grid-template-columns: 1fr;
            }
        }