:root {
  --bg: #fbfaf7;
  --text: #1f1d1a;
  --muted: #6b665e;
  --line: #e4e0d8;
  --link: #2f5d8a;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161513;
    --text: #ebe8e2;
    --muted: #a39d93;
    --line: #34312c;
    --link: #8db8e2;
    --card: #1e1c19;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  font-size: 16px;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header.site { border-bottom: 1px solid var(--line); }
header.site .inner { max-width: 720px; margin: 0 auto; padding: 14px 16px; display: flex; gap: 16px; align-items: baseline; flex-wrap: wrap; }
header.site a.brand { font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
nav a { color: var(--muted); font-size: 14px; margin-right: 12px; }
h1 { font-size: 26px; line-height: 1.4; margin: 8px 0 16px; }
h2 { font-size: 19px; margin: 36px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 20px 0 4px; }
a { color: var(--link); }
p, li { overflow-wrap: anywhere; }
.muted { color: var(--muted); font-size: 14px; }
.lead { font-size: 17px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; margin: 8px 0; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--card); white-space: nowrap; }
dl.facts { display: grid; grid-template-columns: minmax(8em, max-content) 1fr; gap: 0; border-top: 1px solid var(--line); }
dl.facts dt, dl.facts dd { margin: 0; padding: 10px 8px; border-bottom: 1px solid var(--line); }
dl.facts dt { font-weight: 600; }
@media (max-width: 520px) {
  dl.facts { grid-template-columns: 1fr; }
  dl.facts dt { border-bottom: none; padding-bottom: 0; }
}
footer { max-width: 720px; margin: 0 auto; padding: 24px 16px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
footer a { color: var(--muted); margin-right: 12px; }