:root{--bg:#fff;--ink:#1d1d1f;--dim:#6e6e73;--card:#f5f5f7;--line:#d2d2d7;--green:#1fa347}
@media (prefers-color-scheme:dark){:root{--bg:#1c1c1e;--ink:#f5f5f7;--dim:#a1a1a6;--card:#2a2a2e;--line:#3a3a3f;--green:#30d158}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 -apple-system,BlinkMacSystemFont,"SF Pro Text",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
main{max-width:720px;margin:0 auto;padding:56px 24px 80px}
header{display:flex;align-items:center;gap:12px;margin-bottom:40px}
header svg{width:44px;height:44px;flex:none}
header b{font:600 22px ui-rounded,"SF Pro Rounded",-apple-system,sans-serif;letter-spacing:-.01em}
header span{color:var(--dim);font-size:14px;display:block;font-weight:400}
h1{font:700 36px/1.15 ui-rounded,"SF Pro Rounded",-apple-system,sans-serif;letter-spacing:-.02em;margin:0 0 8px}
h2{font-size:21px;margin:36px 0 8px}
p,li{color:var(--ink)}
.dim{color:var(--dim)}
ul{padding-left:22px}
li{margin:6px 0}
.card{background:var(--card);border-radius:16px;padding:18px 20px;margin:16px 0}
code,pre{font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}
pre{background:var(--card);border-radius:12px;padding:14px 16px;overflow-x:auto;margin:10px 0}
a{color:var(--green)}
footer{margin-top:56px;padding-top:20px;border-top:1px solid var(--line);color:var(--dim);font-size:14px}