:root { --accent:#1c7094; --text:#1d1d1f; --muted:#6e6e73; --bg:#f5f5f7; --card:#fff; }
@media (prefers-color-scheme: dark) { :root { --text:#f5f5f7; --muted:#a1a1a6; --bg:#000; --card:#1c1c1e; --accent:#4fb3d9; } }
* { box-sizing:border-box; }
body { margin:0; font:17px/1.55 -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif; color:var(--text); background:var(--bg); }
main { max-width:720px; margin:0 auto; padding:32px 20px 64px; }
header { display:flex; align-items:center; gap:16px; margin-bottom:24px; }
header img { width:72px; height:72px; border-radius:16px; }
h1 { font-size:32px; margin:0; } h2 { font-size:22px; margin:32px 0 8px; } h3 { font-size:18px; margin:20px 0 4px; }
.sub { color:var(--muted); margin:2px 0 0; }
.card { background:var(--card); border-radius:16px; padding:20px 22px; margin:16px 0; }
a { color:var(--accent); } p { margin:8px 0; } ul { padding-left:22px; }
.muted { color:var(--muted); font-size:15px; }
nav a { margin-right:16px; }