:root{--bg:#fafaf9;--surface:#fff;--border:#ecebe8;--text:#1a1a19;--muted:#57564f;--signal:#e8492a}
@media (prefers-color-scheme:dark){:root{--bg:#141413;--surface:#1c1c1a;--border:#2c2c29;--text:#f2f1ee;--muted:#b9b8b3;--signal:#f0573a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:40px 16px 80px}
header{display:flex;align-items:center;gap:10px;margin-bottom:32px}
header img{width:28px;height:28px}
header a{color:var(--text);text-decoration:none;font-weight:600}
h1{font-size:30px;line-height:1.2;margin:0 0 8px}
h2{font-size:20px;margin:36px 0 8px}
h3{font-size:16px;margin:20px 0 4px}
p,li{color:var(--text)}
.muted{color:var(--muted);font-size:14px}
ul{padding-left:22px}
li{margin:4px 0}
a{color:var(--signal)}
hr{border:0;border-top:1px solid var(--border);margin:48px 0}
code{font:13px/1.4 ui-monospace,Menlo,monospace;background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:1px 4px}