:root {
  color-scheme: light dark;
  --text: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --bg: #fafaf9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #fafaf9;
    --muted: #a8a29e;
    --line: #292524;
    --bg: #0c0a09;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 17px/1.5 ui-sans-serif, system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
}
main { max-width: 40rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
.mark { letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.75rem; color: var(--muted); }
h1 { font-size: 2rem; line-height: 1.15; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.5rem; }
.lead, p { color: var(--text); }
.links a { display: inline-block; margin: 0 1rem 0.5rem 0; }
a { color: inherit; }
ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }
.note { color: var(--muted); font-size: 0.9rem; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }