:root { --fg: #1f2328; --muted: #59636e; --link: #0b57d0; --bg: #ffffff; --line: #d1d9e0; }
@media (prefers-color-scheme: dark) {
  :root { --fg: #e6edf3; --muted: #9198a1; --link: #7cacf8; --bg: #0d1117; --line: #30363d; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 64px; }
h1 { font-size: 2rem; margin: 0 0 4px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
a { color: var(--link); }
.meta, .nav { color: var(--muted); font-size: 0.9rem; }
.nav { margin: 0 0 24px; }
ul, ol { padding-left: 1.4em; }
li { margin: 4px 0; }
.links li { margin: 8px 0; font-size: 1.05rem; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem; }