/* Hallmark stamp: theme Almanac (dealt 1/3, over Blueprint and Editorial) · genre editorial · job: read notes · signature: the corrected figures, drawn as SVG · Floor: 0 FAIL · Reflex: long-document pages waive the 80-word screen rule, because these are study notes, not a marketing page */
:root {
  --color-paper: oklch(84% 0.012 245); --color-paper-2: oklch(81% 0.012 245); --color-paper-3: oklch(77% 0.012 245);
  --color-ink: oklch(16% 0.020 245); --color-ink-2: oklch(24% 0.018 245); --color-muted: oklch(38% 0.016 245);
  --color-rule: oklch(73% 0.013 240); --color-rule-2: oklch(32% 0.018 240);
  --color-accent: oklch(45% 0.180 350); --color-accent-2: oklch(37% 0.160 350); --color-accent-ink: oklch(97% 0.006 245); --color-focus: oklch(46% 0.190 350);
  --color-sheet: oklch(93.5% 0.008 245);
  --font-display: "Hanken Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Newsreader", ui-serif, Georgia, serif;
  --font-outlier: "IBM Plex Mono", ui-monospace, monospace;
  --radius-card: 0; --radius-pill: 2px; --rule-hair: 1px; --rule-bar: 2px;
  --space: 1rem; --measure: 72ch; --container: 1120px;
}
html, body { overflow-x: clip; }
html { scrollbar-color: var(--color-rule-2) var(--color-paper); }
* { box-sizing: border-box; }
body { margin: 0; background: var(--color-paper); color: var(--color-ink-2); font: 400 1.05rem/1.55 var(--font-body); }
h1, h2, h3, h4 { text-wrap: balance; font-family: var(--font-display); font-weight: 600; color: var(--color-ink); letter-spacing: -0.02em; line-height: 1.1; overflow-wrap: break-word; min-width: 0; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 0.98; margin: 0.4rem 0 0.6rem; }
h2 { font-size: 1.55rem; margin: 2.2rem 0 0.6rem; padding-top: 1rem; border-top: var(--rule-bar) solid var(--color-rule-2); }
h3 { font-size: 1.2rem; margin: 1.6rem 0 0.4rem; }
p { max-width: var(--measure); margin: 0.5rem 0; }
a { color: var(--color-ink); text-decoration-color: var(--color-accent); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }
.topbar { border-bottom: var(--rule-bar) solid var(--color-rule-2); background: var(--color-paper); }
.topbar .container { display: flex; gap: 1.5rem; align-items: baseline; flex-wrap: wrap; padding-top: 0.9rem; padding-bottom: 0.9rem; }
.wordmark { font-family: var(--font-display); font-weight: 600; color: var(--color-ink); text-decoration: none; font-size: 1.15rem; }
.wordmark span { color: var(--color-accent); }
.topbar nav { display: flex; gap: 1.25rem; flex-wrap: wrap; font-family: var(--font-display); font-size: 0.95rem; }
.topbar nav a { text-decoration: none; }
.hero { padding: 3.2rem 0 2.4rem; }
.hero p.lede { font-size: 1.25rem; max-width: 62ch; }
.sheet { background: var(--color-sheet); border-top: var(--rule-bar) solid var(--color-ink); padding: 1.8rem 1.6rem; margin: 1.5rem 0; }
.well { background: var(--color-paper-2); border-top: var(--rule-bar) solid var(--color-rule-2); padding: 1.2rem 1.4rem; margin: 1.4rem 0; }
.check { background: var(--color-sheet); border-top: var(--rule-bar) solid var(--color-accent); padding: 1rem 1.2rem; margin: 1.4rem 0; }
.check h3 { margin-top: 0; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.98rem; }
thead th { border-bottom: var(--rule-bar) solid var(--color-rule-2); font: 500 0.92rem/1.3 var(--font-body); color: var(--color-muted); text-align: left; padding: 0.5rem 0.6rem 0.5rem 0; }
td { border-top: var(--rule-hair) solid var(--color-rule); padding: 0.55rem 0.6rem 0.55rem 0; vertical-align: top; }
td.num, th.num, .num { font-family: var(--font-outlier); font-variant-numeric: tabular-nums; text-align: right; }
figure { margin: 1.6rem 0; }
figure svg { width: 100%; height: auto; display: block; background: var(--color-sheet); border: var(--rule-hair) solid var(--color-rule-2); }
figcaption { font: 500 0.92rem/1.4 var(--font-body); color: var(--color-muted); margin-top: 0.5rem; max-width: var(--measure); }
ul, ol { max-width: var(--measure); }
li { margin: 0.3rem 0; }
.chapter-list { list-style: none; padding: 0; margin: 1rem 0; max-width: none; }
.chapter-list li { border-top: var(--rule-hair) solid var(--color-rule); padding: 1.1rem 0; display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: baseline; }
.chapter-list .no { font-family: var(--font-outlier); font-size: 1.1rem; color: var(--color-accent); }
.chapter-list h2 { margin: 0; font-size: 1.3rem; border-top: none; padding-top: 0; }
.chapter-list p { margin: 0.25rem 0 0; color: var(--color-muted); }
.status { font-family: var(--font-display); font-size: 0.9rem; white-space: nowrap; }
.topic-list { list-style: none; padding: 0; }
.topic-list li { border-top: var(--rule-hair) solid var(--color-rule); padding: 0.7rem 0; }
.topic-list a { font-family: var(--font-display); font-weight: 600; text-decoration: none; }
.crumb { font-family: var(--font-display); font-size: 0.92rem; color: var(--color-muted); margin: 1.4rem 0 0; }
.crumb a { color: var(--color-muted); }
.pager { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; border-top: var(--rule-bar) solid var(--color-rule-2); margin-top: 2.5rem; padding-top: 1rem; font-family: var(--font-display); }
.btn { display: inline-block; border: var(--rule-hair) solid var(--color-ink); border-radius: var(--radius-pill); padding: 0.65rem 1.1rem; font: 500 0.95rem/1 var(--font-display); color: var(--color-ink); background: transparent; text-decoration: none; }
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }
.btn-primary:hover { background: var(--color-accent-2); }
footer { border-top: var(--rule-bar) solid var(--color-rule-2); margin-top: 3rem; padding: 1.6rem 0 2.4rem; color: var(--color-muted); font-size: 0.95rem; }
footer p { max-width: var(--measure); }
.formula { font-family: var(--font-outlier); background: var(--color-sheet); border: var(--rule-hair) solid var(--color-rule); padding: 0.8rem 1rem; overflow-x: auto; margin: 1rem 0; max-width: var(--measure); }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin: 1.2rem 0; }
.kv div { border-top: var(--rule-bar) solid var(--color-rule-2); padding-top: 0.6rem; }
.kv .num { font-size: 1.7rem; text-align: left; display: block; font-variant-numeric: tabular-nums; }
::selection { background: var(--color-accent); color: var(--color-accent-ink); }
a:active, .btn:active { background: var(--color-paper-2); }
.kv span { color: var(--color-muted); font-size: 0.92rem; }
@media (max-width: 640px) {
  .chapter-list li { grid-template-columns: 2.4rem 1fr; }
  .status { grid-column: 2; }
  .sheet { padding: 1.2rem 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}