:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:#161616;background:#fff}
*{box-sizing:border-box}body{margin:0;line-height:1.7}.wrap{max-width:900px;margin:0 auto;padding:32px 20px 64px}
h1{font-size:2rem;margin-bottom:.35rem}h2{margin-top:2rem}h3{margin-top:1.35rem}
.meta{color:#666;font-size:.94rem}.notice{padding:14px 16px;background:#f5f5f5;border-radius:10px;margin:18px 0}
a{color:inherit}.footer{margin-top:48px;padding-top:20px;border-top:1px solid #ddd;color:#666;font-size:.9rem}
code{background:#f5f5f5;padding:.1rem .3rem;border-radius:.25rem}