:root{--bg:#fafaf9;--fg:#1c1917;--muted:#57534e;--line:#e7e5e4;--accent:#2563eb}
@media (prefers-color-scheme:dark){:root{--bg:#0c0a09;--fg:#f5f5f4;--muted:#a8a29e;--line:#292524;--accent:#60a5fa}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:720px;margin:0 auto;padding:48px 16px}
header{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:40px}
.logo{font-weight:700;font-size:24px;letter-spacing:-.02em;color:var(--fg);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:14px}
nav a:first-child{margin-left:0}
nav a:hover,a{color:var(--accent)}
h1{font-size:36px;line-height:1.2;letter-spacing:-.02em;margin:0 0 16px}
h2{font-size:18px;margin:32px 0 8px}
p,li{color:var(--muted)}
.lead{font-size:19px}
footer{border-top:1px solid var(--line);margin-top:56px;padding-top:16px;font-size:13px;color:var(--muted)}
footer a{color:var(--muted);margin-right:16px}