:root {
  --bg: #ffffff;
  --text: #1b2430;
  --muted: #5c6b7f;
  --accent: #1f8f78;
  --rule: #e2e8f0;
  --card: #f6f8fb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141821;
    --text: #e8eef7;
    --muted: #78879b;
    --accent: #4ec9b0;
    --rule: #273040;
    --card: #1b2230;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 2.5rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; }
h1 { font-size: 1.85rem; line-height: 1.25; margin: 0 0 1.5rem; }
h2 {
  font-size: 1.15rem;
  margin: 2.5rem 0 .75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}
p, li { margin: 0 0 1rem; }
ul { padding-left: 1.25rem; }
a { color: var(--accent); }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .9em;
  background: var(--card);
  padding: .1em .4em;
  border-radius: .25rem;
}
dl {
  margin: 0 0 1rem;
  padding: 1rem 1.25rem;
  background: var(--card);
  border-radius: .5rem;
}
dt { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
dd { margin: .15rem 0 .9rem; }
dd:last-child { margin-bottom: 0; }
nav { margin: 0 0 2rem; font-size: .9rem; color: var(--muted); }
footer { margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: .9rem; }