:root {
  --bg: #fbfaf8;
  --fg: #1d1d1f;
  --muted: #5f6368;
  --rule: #e3e1dc;
  --accent: #1f5fa8;
  --ph-bg: #fff3c4;
  --ph-fg: #6b4e00;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161718;
    --fg: #e8e6e3;
    --muted: #a0a4a8;
    --rule: #2e3033;
    --accent: #7fb0ec;
    --ph-bg: #4a3b0a;
    --ph-fg: #ffe28a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 46rem; margin: 0 auto; padding: 2rem 1rem 4rem; }
.lang { text-align: right; font-size: .9rem; color: var(--muted); }
.lang a { color: var(--accent); text-decoration: none; }
.lang [aria-current] { font-weight: 600; color: var(--fg); }
h1 { font-size: 1.75rem; line-height: 1.25; margin: 1.5rem 0 .5rem; }
h2 { font-size: 1.2rem; margin: 2.25rem 0 .5rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
h3 { font-size: 1rem; margin: 1.25rem 0 .25rem; }
p, li, dd { overflow-wrap: anywhere; }
.meta { color: var(--muted); font-size: .9rem; }
.note { font-size: .9rem; color: var(--muted); border-left: 3px solid var(--rule); padding-left: .75rem; }
.basis { margin-top: .25rem; }
a { color: var(--accent); }
ol.alpha { list-style: lower-alpha; }
ol, ul { padding-left: 1.5rem; }
li { margin: .35rem 0; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; }
dt { font-weight: 600; }
dd { margin: 0; }
@media (max-width: 520px) {
  dl { grid-template-columns: 1fr; gap: 0; }
  dd { margin-bottom: .5rem; }
}
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: .9rem; }
.notice { margin: 1rem 0; padding: .75rem 1rem; border: 1px solid var(--accent); border-radius: 6px; font-size: .95rem; }