:root{--bg:#fbfbfa;--text:#1b1c1f;--muted:#62656c;--line:#e4e4e2;--accent:#d94a55}
@media (prefers-color-scheme:dark){:root{--bg:#111318;--text:#f2f2f4;--muted:#9a9ca3;--line:#262931;--accent:#f05a60}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",sans-serif;-webkit-font-smoothing:antialiased}
main{max-width:640px;margin:0 auto;padding:56px 20px 80px}
h1{font-size:34px;line-height:1.15;margin:0 0 8px;letter-spacing:-.01em}
h2{font-size:20px;margin:40px 0 8px}
p,li{color:var(--text)}
.lead{color:var(--muted);margin:0 0 32px}
.muted{color:var(--muted);font-size:15px}
a{color:var(--accent)}
nav{display:flex;gap:20px;margin-bottom:48px;font-size:15px}
nav a{text-decoration:none}
hr{border:0;border-top:1px solid var(--line);margin:48px 0 24px}
img.icon{width:72px;height:72px;border-radius:16px;margin-bottom:20px}