:root {
  --ink: #1b2a4a;
  --body: #34405a;
  --muted: #6a7488;
  --cobalt: #1f4fa8;
  --ground: #fbfaf6;
  --rule: #dfe3ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef1f7;
    --body: #c9d0dd;
    --muted: #8d97aa;
    --cobalt: #8fb0ef;
    --ground: #10182a;
    --rule: #2a3550;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--body);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  border-bottom: 1px solid var(--rule); padding-bottom: 12px; margin-bottom: 24px; }
.brand { font-weight: 700; letter-spacing: 0.04em; color: var(--cobalt); text-decoration: none; }
.lang a { color: var(--muted); }
h1 { color: var(--ink); font-size: 1.9rem; line-height: 1.2; margin: 0 0 4px; }
h2 { color: var(--ink); font-size: 1.2rem; margin: 32px 0 8px; }
.updated { color: var(--muted); font-size: 0.9rem; margin: 0 0 24px; }
a { color: var(--cobalt); }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin: 8px 0; }
th, td { text-align: left; vertical-align: top; padding: 8px 8px 8px 0; border-bottom: 1px solid var(--rule); }
th { color: var(--ink); }
.scroll { overflow-x: auto; }
.todo { background: #ffe9a8; color: #3b2f00; padding: 0 4px; border-radius: 3px; }
footer { margin-top: 48px; color: var(--muted); font-size: 0.9rem; }