/* 全局重置与字体 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #222;
            background: #fafafa;
            padding: 20px;
        }
        .container {
            max-width: 800px;
            margin: 0 auto;
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        header {
            border-bottom: 2px solid #eee;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        header h1 {
            font-size: 2rem;
            font-weight: 600;
        }
        nav a {
            color: #0366d6;
            text-decoration: none;
            margin-right: 15px;
        }
        nav a:hover {
            text-decoration: underline;
        }
        article {
            margin-bottom: 30px;
        }
        article h2 {
            font-size: 1.8rem;
            margin: 20px 0 10px;
        }
        article p {
            margin: 10px 0;
        }
        article code {
            background: #f0f0f0;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.9em;
        }
        article pre {
            background: #f6f8fa;
            padding: 16px;
            border-radius: 6px;
            overflow-x: auto;
        }
        footer {
            margin-top: 40px;
            padding-top: 15px;
            border-top: 1px solid #eee;
            font-size: 0.9rem;
            color: #666;
            text-align: center;
        }
        /* 对图片和表格等的基本支持 */
        img {
            max-width: 100%;
            height: auto;
        }
        table {
            border-collapse: collapse;
            width: 100%;
            margin: 15px 0;
        }
        th, td {
            border: 1px solid #ddd;
            padding: 8px 12px;
            text-align: left;
        }
        th {
            background: #f6f8fa;
        }