:root { --bg: #fafaf9; --text: #1c1917; --muted: #57534e; --accent: #4f46e5; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c0a09; --text: #f5f5f4; --muted: #a8a29e; --accent: #a5b4fc; }
}
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 system-ui, -apple-system, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { margin: 0 0 16px; }
h2 { margin: 32px 0 8px; font-size: 1.15rem; }
a { color: var(--accent); }
.muted { color: var(--muted); }