:root { color-scheme: dark; --bg:#0f1419; --text:#f2efe9; --muted:#a9b4bf; --accent:#3cc6c0; }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--text); font:17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 2rem 1rem 4rem; }
h1 { font-size: 1.8rem; line-height: 1.2; } h2 { font-size: 1.2rem; margin-top: 2rem; }
a { color: var(--accent); } .muted { color: var(--muted); } nav a { margin-right: 1rem; }