:root {
  --bg: #fbfaf7;
  --fg: #1d1d1b;
  --muted: #5f5f5a;
  --accent: #0b6e4f;
  --rule: #e2dfd6;
  --card: #ffffff;
  --warn: #8a4b00;
  --warn-bg: #fff4e5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --fg: #ececea;
    --muted: #a7a7a2;
    --accent: #5fc9a3;
    --rule: #2c3036;
    --card: #1d2024;
    --warn: #f0b76a;
    --warn-bg: #2a2114;
  }
}
* { box-sizing: border-box; }
html { font-size: 17px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.55;
}
header.site {
  border-bottom: 1px solid var(--rule);
  padding: 14px 16px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
header.site .inner, main, footer.site .inner {
  max-width: 820px;
  margin: 0 auto;
}
header.site .inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: baseline;
}
header.site a { color: var(--fg); text-decoration: none; }
header.site a.brand { font-weight: 700; letter-spacing: 0.02em; }
header.site nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
header.site nav a { color: var(--muted); font-size: 0.92rem; }
header.site nav a:hover { color: var(--accent); }
main { padding: 28px 16px 56px; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 1.3rem; margin: 34px 0 8px; }
h3 { font-size: 1.05rem; margin: 24px 0 6px; }
p.lede { font-size: 1.1rem; color: var(--muted); margin-top: 0; }
a { color: var(--accent); }
small, .muted { color: var(--muted); }
table {
  border-collapse: collapse;
  width: 100%;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.9rem;
  margin: 12px 0 18px;
}
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; color: var(--muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-wrap { overflow-x: auto; }
.notice {
  background: var(--warn-bg);
  color: var(--warn);
  border-left: 4px solid var(--warn);
  padding: 10px 14px;
  margin: 18px 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.95rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 14px 0;
}
.card h3 { margin-top: 0; }
blockquote {
  margin: 12px 0;
  padding: 2px 14px;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}
code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86rem;
}
pre {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
}
ul, ol { padding-left: 1.3em; }
li { margin: 4px 0; }
footer.site {
  border-top: 1px solid var(--rule);
  padding: 18px 16px 28px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.88rem;
  color: var(--muted);
}
dl.meta { font-family: system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 0.92rem; }
dl.meta dt { font-weight: 600; margin-top: 8px; }
dl.meta dd { margin: 0; }