:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:#202a31;background:#f7f8fa;line-height:1.75}body{max-width:820px;margin:36px auto;padding:0 24px}nav{display:flex;flex-wrap:wrap;gap:20px;border-bottom:1px solid #d4dbe1;padding-bottom:16px}a{color:#205b83}h1,h2{line-height:1.3}h1{margin-top:36px}h2{margin-top:30px}code{overflow-wrap:anywhere;background:#e8edf2;padding:2px 5px}footer{margin-top:40px;border-top:1px solid #d4dbe1;padding-top:16px;color:#52616d}.notice{border-left:4px solid #205b83;background:#edf3f8;padding:12px 18px}li{margin-bottom:8px}