:root { --bg:#ffffff; --fg:#1f2328; --muted:#59636e; --link:#0969da; }
@media (prefers-color-scheme: dark) { :root { --bg:#0d1117; --fg:#e6edf3; --muted:#9198a1; --link:#4493f8; } }
body { background:var(--bg); color:var(--fg); font:16px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif; margin:0; }
main { max-width:680px; margin:0 auto; padding:48px 16px; }
h1 { font-size:1.8rem; margin:0 0 8px; } h2 { font-size:1.15rem; margin-top:32px; }
p, li { color:var(--fg); } .muted { color:var(--muted); } a { color:var(--link); }