:root{--bg:#fbfaf7;--fg:#1d1d1b;--muted:#5d5c57;--line:#e4e1d8;--accent:#0f766e}
@media (prefers-color-scheme:dark){:root{--bg:#141413;--fg:#ecebe6;--muted:#a3a29b;--line:#2c2b28;--accent:#5eead4}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:40px 16px 64px}header{display:flex;gap:16px;flex-wrap:wrap;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:28px}
.brand{font-weight:700;font-size:20px;letter-spacing:.2px}nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:14px}nav a:hover{color:var(--accent)}
h1{font-size:28px;line-height:1.25;margin:0 0 8px}h2{font-size:19px;margin:32px 0 8px}p,li{color:var(--fg)}.muted{color:var(--muted);font-size:14px}
a{color:var(--accent)}hr{border:0;border-top:1px solid var(--line);margin:40px 0}footer{margin-top:48px;font-size:13px;color:var(--muted)}