/* 整体清爽样式 */
body {
    font-family: "Microsoft Yahei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f7f8fa;
    color: #333;
    line-height: 1.7;
}

/* 主内容区宽度适中 */
#main {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-weight: 600;
    color: #222;
    margin-top: 1.5em;
    margin-bottom: 0.8em;
}
h1 { font-size: 26px; border-left: 4px solid #42b983; padding-left: 12px; }
h2 { font-size: 22px; border-left: 3px solid #42b983; padding-left: 10px; }
h3 { font-size: 19px; }

/* 链接颜色 */
a { color: #42b983; text-decoration: none; }
a:hover { text-decoration: underline; }

/* 代码块样式 */
pre {
    background: #2d2d2d;
    color: #ccc;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 14px;
}
code {
    background: #f1f1f1;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 14px;
}

/* 段落间距 */
p { margin-bottom: 1em; }

/* 侧边栏隐藏/精简（可选） */
#sidebar { display: none; }