body{font-family:system-ui,-apple-system,sans-serif;line-height:1.6;color:#1a1a18;
       background:#f4f2ec;margin:0;padding:24px}
  main{max-width:760px;margin:0 auto;background:#fff;border:1px solid #e5e2d8;
       border-radius:14px;padding:28px 30px}
  h1{font-size:24px;margin:0 0 4px}h2{font-size:18px;margin:24px 0 6px}
  .muted{color:#777;font-size:14px;margin-bottom:18px}
  a{color:#1d9e75}ul{padding-left:20px}code{background:#f4f2ec;padding:1px 5px;border-radius:4px}
  footer{margin-top:28px;color:#999;font-size:13px;text-align:center}