:root{--bg:#fff;--fg:#1f2328;--muted:#59636e;--accent:#2a7f62;--line:#e6e8eb}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--fg:#e6e6e6;--muted:#9aa4af;--accent:#5fc9a1;--line:#272b33}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 16px 64px}
h1{font-size:1.9rem;line-height:1.2;margin:0 0 .25rem}h2{font-size:1.2rem;margin:2rem 0 .5rem}
p,li{margin:.5rem 0}.meta{color:var(--muted);font-size:.9rem;margin-bottom:2rem}
a{color:var(--accent)}nav{font-size:.9rem;margin-bottom:1.5rem}nav a{margin-right:1rem}
footer{margin-top:3rem;padding-top:1rem;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}