:root{--bg:#f6f7f9;--fg:#11151c;--muted:#5b6472;--accent:#6d4aff;--card:#fff;--border:#e2e5ea;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#0b0d12;--fg:#e8ebf1;--muted:#8d96a7;--accent:#8b6dff;--card:#12151c;--border:#262c39;color-scheme:dark}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:46rem;margin:0 auto;padding:3rem 1rem 4rem}h1{font-size:1.75rem;line-height:1.25;margin:0 0 .25rem}h2{font-size:1.15rem;margin:2rem 0 .5rem}
p,li{color:var(--fg)}.muted{color:var(--muted);font-size:.9rem}a{color:var(--accent)}nav{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2rem;font-size:.95rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:1rem 1.25rem;margin:1rem 0}hr{border:0;border-top:1px solid var(--border);margin:2.5rem 0}