:root{--bg:#F9F7F3;--fg:#1c2b33;--muted:#5b6b73;--link:#00695C;--line:#e3ded5}
@media (prefers-color-scheme:dark){:root{--bg:#0e1a20;--fg:#e8eef0;--muted:#9fb0b7;--link:#4dd0c0;--line:#25343c}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
header,main,footer{max-width:760px;margin:0 auto;padding:16px}
header{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;border-bottom:1px solid var(--line)}
.brand{font-weight:800;font-size:1.3rem;text-decoration:none;color:var(--fg)}
nav{display:flex;flex-wrap:wrap;gap:4px 16px}nav a{color:var(--link);padding:6px 0}nav a[aria-current]{font-weight:700}
h1{font-size:1.9rem;line-height:1.25}h2{font-size:1.2rem;margin-top:1.8em}.meta{color:var(--muted)}
a{color:var(--link)}footer{color:var(--muted);border-top:1px solid var(--line);margin-top:32px;font-size:.9rem}