:root { color-scheme: light dark; --ink: #1d1d1f; --muted: #555; --bg: #fff; --line: #ddd; }
@media (prefers-color-scheme: dark) { :root { --ink: #eee; --muted: #aaa; --bg: #161616; --line: #333; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 -apple-system, system-ui, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 1.9rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 28px 0 6px; }
.meta { color: var(--muted); margin: 0 0 24px; }
a { color: inherit; }
footer { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }