:root { color-scheme: light dark; }
body { margin: 0; font-family: system-ui, sans-serif; line-height: 1.55; }
main { max-width: 720px; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
h1 { font-weight: 500; }
h2 { margin-top: 2rem; font-size: 1.1rem; }
.meta { opacity: .7; font-size: .9rem; }
a { color: inherit; }
code { font-size: .95em; }