:root { --bg: #ffffff; --ink: #161823; --muted: #5c5e69; --accent: #fe2c55; color-scheme: light; }
@media (prefers-color-scheme: dark) { :root { --bg: #000000; --ink: #ffffff; --muted: #a7a8b0; color-scheme: dark; } }
a:hover { color: var(--accent); }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 "Segoe UI", system-ui, -apple-system, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 40px 20px 60px; }
a { color: inherit; }
h1 { font-size: 2.2rem; letter-spacing: -0.02em; margin: 12px 0; }
h2 { font-size: 1.3rem; margin: 28px 0 8px; }
p, li { color: var(--muted); }