:root {
  --bg: #fbfaf7;
  --fg: #1d2420;
  --muted: #5b655f;
  --line: #dcdad2;
  --accent: #2f6b57;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141815;
    --fg: #e8ece9;
    --muted: #9aa59f;
    --line: #2a322d;
    --accent: #7fc4a8;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main, header, footer { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 28px; padding-bottom: 8px; display: flex; gap: 20px; align-items: baseline; flex-wrap: wrap; }
header a.brand { font-weight: 650; color: var(--fg); text-decoration: none; }
header nav a { margin-right: 16px; }
a { color: var(--accent); }
h1 { font-size: 2rem; line-height: 1.2; margin: 1.6rem 0 0.6rem; }
h2 { font-size: 1.25rem; margin: 2.2rem 0 0.4rem; }
p, li { max-width: 65ch; }
.lede { font-size: 1.15rem; color: var(--muted); }
.note { color: var(--muted); font-size: 0.95rem; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); }
th { font-weight: 600; }
footer { padding-top: 40px; padding-bottom: 48px; color: var(--muted); font-size: 0.9rem; }
@media (max-width: 520px) { table { font-size: 0.9rem; } }