:root{--bg:#F7F7F5;--ink:#111;--ink2:#6B6B66;--line:#E4E4E0;--surface:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#0E0E0E;--ink:#F3F3F1;--ink2:#9A9A94;--line:#2A2A28;--surface:#161615}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Helvetica Neue",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
main{max-width:680px;margin:0 auto;padding:48px 20px 80px}
header{display:flex;align-items:center;gap:12px;margin-bottom:48px}
header a{color:inherit;text-decoration:none;font-weight:600;font-size:19px;display:flex;align-items:center;gap:12px}
svg.logo{width:34px;height:34px}
h1{font-size:40px;line-height:1.1;letter-spacing:-.02em;margin:0 0 16px}
h2{font-size:20px;margin:40px 0 8px}
p,li{color:var(--ink)}
.muted{color:var(--ink2)}
a{color:var(--ink)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px 24px;margin:24px 0}
nav{display:flex;gap:20px;margin-top:56px;padding-top:20px;border-top:1px solid var(--line);font-size:15px}
nav a{color:var(--ink2)}
.big{font-size:84px;font-weight:600;letter-spacing:-.03em;line-height:1}