:root {
  --ink: #1a1f29;
  --bg: #fcfaf6;
  --paper: #ffffff;
  --rule: #d8d3c8;
  --accent: #7c2c2c;
  --accent-2: #2c5b7c;
  --accent-3: #4a6b3a;
  --accent-4: #8a5a18;
  --muted: #5b6271;
  --quote-bg: #f5f1e8;
  --quote-border: #c9b58a;
  --code-bg: #f0ece2;
  --warn-bg: #fdf3e1;
  --warn-border: #d99a3a;
  --good-bg: #eef3e8;
  --good-border: #7a9a5a;
  --bad-bg: #f7e8e8;
  --bad-border: #b87070;
  --info-bg: #e8eef5;
  --info-border: #7a98b8;
}
* { box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; }
body {
  font-family: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  margin: 0;
  padding: 0;
}
.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 60px 56px 100px;
  background: var(--paper);
  border-left: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  min-height: 100vh;
}
header.cover {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 28px;
  margin-bottom: 40px;
}
header.cover .eyebrow {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 16px;
}
header.cover h1 { font-size: 36px; line-height: 1.15; margin: 0 0 12px; font-weight: 600; letter-spacing: -0.01em; }
header.cover .subtitle { font-size: 18px; color: var(--muted); font-style: italic; margin-bottom: 28px; }
header.cover .meta {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 13px; color: var(--muted);
  display: grid; grid-template-columns: max-content 1fr; gap: 4px 20px;
}
header.cover .meta dt { font-weight: 600; color: var(--ink); }
nav.crumbs {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 12px; letter-spacing: 0.04em;
  color: var(--muted); margin-bottom: 24px;
}
nav.crumbs a { color: var(--muted); text-decoration: none; }
nav.crumbs a:hover { color: var(--accent); }
nav.crumbs .sep { margin: 0 8px; color: var(--rule); }
h2 {
  font-size: 24px; margin-top: 52px; margin-bottom: 14px;
  padding-bottom: 8px; border-bottom: 1px solid var(--rule);
  font-weight: 600; letter-spacing: -0.005em;
}
h2 .num { font-family: "JetBrains Mono", "Menlo", monospace; color: var(--accent); margin-right: 12px; font-size: 18px; }
h3 { font-size: 17px; margin-top: 28px; margin-bottom: 8px; font-weight: 600; color: var(--ink); }
h4 {
  font-size: 13px; font-family: "Inter", -apple-system, sans-serif;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); margin-top: 22px; margin-bottom: 8px; font-weight: 600;
}
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 16px 0; padding-left: 26px; }
li { margin-bottom: 6px; }
strong { font-weight: 600; }
em { font-style: italic; }
code {
  font-family: "JetBrains Mono", "Menlo", monospace;
  font-size: 13px;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}
pre {
  font-family: "JetBrains Mono", "Menlo", monospace;
  font-size: 12.5px; line-height: 1.5;
  background: var(--code-bg);
  border: 1px solid var(--rule); border-radius: 4px;
  padding: 14px 16px; margin: 16px 0;
  overflow-x: auto;
}
pre code { background: transparent; padding: 0; }
.lede {
  font-size: 17px; line-height: 1.55;
  border-left: 3px solid var(--accent); padding: 4px 0 4px 18px;
  margin: 0 0 28px; color: var(--ink);
}
.callout {
  background: var(--warn-bg); border-left: 3px solid var(--warn-border);
  padding: 14px 18px; margin: 18px 0; font-size: 14px;
}
.callout.good { background: var(--good-bg); border-left-color: var(--good-border); }
.callout.bad  { background: var(--bad-bg);  border-left-color: var(--bad-border); }
.callout.info { background: var(--info-bg); border-left-color: var(--info-border); }
.callout strong { font-family: "Inter", -apple-system, sans-serif; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; display: block; margin-bottom: 4px; }
table.data {
  width: 100%; border-collapse: collapse; margin: 14px 0 22px;
  font-size: 13.5px;
}
table.data th, table.data td {
  text-align: left; padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
table.data th {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); font-weight: 600;
  border-bottom: 1.5px solid var(--ink);
}
table.data td.num, table.data th.num { font-family: "JetBrains Mono", "Menlo", monospace; text-align: right; white-space: nowrap; }
table.data tr:hover { background: #faf7ee; }
.fig {
  margin: 22px 0 26px;
  background: #fbf9f3;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 18px;
}
.fig svg { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.fig .caption {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 12px; color: var(--muted); text-align: center;
  margin-top: 12px; line-height: 1.45;
}
.fig .caption b { color: var(--ink); font-weight: 600; }
.kbd {
  font-family: "JetBrains Mono", "Menlo", monospace;
  font-size: 12px; background: var(--code-bg);
  border: 1px solid var(--rule); border-radius: 3px;
  padding: 1px 5px;
}
.tag {
  display: inline-block;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 3px;
  background: var(--code-bg); color: var(--accent);
  margin-right: 6px;
  vertical-align: 2px;
}
.tag.ok { background: var(--good-bg); color: #3d5a28; }
.tag.no { background: var(--bad-bg); color: #8a3030; }
.tag.maybe { background: var(--warn-bg); color: #8a5a18; }
.tag.info { background: var(--info-bg); color: #2c5b7c; }
hr.section { border: 0; border-top: 1px solid var(--rule); margin: 40px 0; }
.toc {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 13px;
  background: var(--quote-bg);
  border: 1px solid var(--quote-border);
  border-radius: 4px;
  padding: 16px 20px;
  margin: 0 0 36px;
  columns: 2;
  column-gap: 28px;
}
.toc a { color: var(--ink); text-decoration: none; display: block; padding: 3px 0; break-inside: avoid; }
.toc a:hover { color: var(--accent); }
.toc .num { font-family: "JetBrains Mono", "Menlo", monospace; color: var(--accent); margin-right: 8px; font-size: 11.5px; }
.cards {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin: 24px 0 32px;
}
.cards.three { grid-template-columns: 1fr 1fr 1fr; }
.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 20px 22px;
  text-decoration: none; color: var(--ink);
  display: block;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.card:hover { border-color: var(--accent); box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.card .card-num {
  font-family: "JetBrains Mono", "Menlo", monospace;
  font-size: 11px; color: var(--accent);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 6px;
}
.card .card-title {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 18px; font-weight: 600; line-height: 1.25;
  margin-bottom: 8px;
}
.card .card-desc {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 13px; color: var(--muted); line-height: 1.5;
}
nav.pager {
  margin-top: 60px; padding-top: 18px;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 13px;
}
nav.pager a { color: var(--muted); text-decoration: none; }
nav.pager a:hover { color: var(--accent); }
nav.pager .label {
  font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); display: block; margin-bottom: 2px;
}
nav.pager .title { color: var(--ink); font-weight: 600; }
nav.pager .next { text-align: right; }
footer.colophon {
  margin-top: 60px; padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 12px; color: var(--muted);
}
.statusline {
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 11.5px; letter-spacing: 0.04em;
  color: var(--muted);
  display: flex; gap: 18px; flex-wrap: wrap;
  margin: 14px 0 0;
}
.statusline span { display: inline-flex; align-items: center; gap: 6px; }
.statusline .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--good-border); display: inline-block;
}
.statusline .dot.warn { background: var(--warn-border); }
.statusline .dot.bad  { background: var(--bad-border); }
.statusline .dot.info { background: var(--info-border); }