:root {
  --paper: #f4f1ea;
  --paper-deep: #e9e4d9;
  --ink: #1d1c19;
  --stone: #8d887e;
  --line: #d4cec2;
  --red: #b64832;
  --blue: #31566b;
  --ochre: #b58a43;
  --blue-tint: #d9dfe0;
  --red-tint: #ecd8cf;
  --ochre-tint: #ece0c9;
  --sans: Arial, Helvetica, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --prose: 680px;
  --wide: 1080px;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--paper); color: var(--ink); }
body { font-family: var(--serif); font-size: 18px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration-color: var(--stone); text-underline-offset: 3px; }
a:hover { color: var(--red); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

/* Shared todd.sh back bar (light variant) */
.tsh-back { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 8px; height: 40px; padding: 0 20px;
  font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; text-decoration: none;
  background: var(--paper); color: var(--ink); border-bottom: 1px solid var(--line); transition: color .15s ease; }
.tsh-back:hover { color: var(--red); }
.tsh-back:focus-visible { outline: 2px solid var(--ink); outline-offset: -3px; }
.tsh-back span { font-size: 13px; line-height: 1; }

main { padding: 0 20px 80px; }
.prose { max-width: var(--prose); margin: 0 auto; }
.wide { max-width: var(--wide); margin: 0 auto; }

header.hero { max-width: var(--wide); margin: 0 auto; padding: 64px 0 28px; }
header.hero h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.04; letter-spacing: -.01em; margin: 0 0 18px; font-weight: 700; max-width: 14em; }
header.hero .dek { font-size: 21px; line-height: 1.5; max-width: 36em; margin: 0; color: #3b3935; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0; margin: 36px 0 0; border-top: 1px solid var(--ink); }
.stat { padding: 14px 16px 12px 0; border-bottom: 1px solid var(--line); }
.stat b { display: block; font-family: var(--serif); font-size: 34px; line-height: 1.1; font-weight: 400; font-variant-numeric: tabular-nums lining-nums; }
.stat span { font-family: var(--sans); font-size: 12px; color: var(--stone); letter-spacing: .02em; }

nav.toc { max-width: var(--wide); margin: 8px auto 0; display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 14px 0; border-bottom: 1px solid var(--line);
  font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
nav.toc a { text-decoration: none; color: var(--stone); padding: 6px 0; }
nav.toc a:hover { color: var(--red); }

section { padding: 72px 0 8px; }
section > .prose > h2, .section-head h2 { font-size: clamp(28px, 4vw, 38px); line-height: 1.15; margin: 0 0 16px; font-weight: 700; }
.eyebrow { font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--red); margin: 0 0 10px; }
p { margin: 0 0 18px; }
.note { font-family: var(--sans); font-size: 13px; line-height: 1.5; color: var(--stone); }
.kicker { font-size: 20px; }

.figure { max-width: var(--wide); margin: 28px auto 12px; }
.fig-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px 24px; margin-bottom: 10px; }
.fig-title { font-family: var(--sans); font-size: 14px; font-weight: 700; margin: 0; }
.fig-sub { font-family: var(--sans); font-size: 12px; color: var(--stone); margin: 2px 0 0; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-family: var(--sans); font-size: 12px; color: #3b3935; }
.legend i { display: inline-block; width: 18px; height: 0; border-top: 2px solid; vertical-align: middle; margin-right: 6px; }
.legend i.dash { border-top-style: dashed; }
.legend i.dot { width: 9px; height: 9px; border: 0; border-radius: 50%; }
.legend i.sq { width: 10px; height: 10px; border: 0; border-radius: 2px; }

/* Controls */
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 14px; font-family: var(--sans); }
.chip { font-family: var(--sans); font-size: 12px; min-height: 32px; padding: 6px 12px; border: 1px solid var(--line); background: transparent; color: var(--ink);
  border-radius: 999px; cursor: pointer; }
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.search { font-family: var(--sans); font-size: 14px; height: 40px; padding: 0 12px; border: 1px solid var(--ink); background: var(--paper); color: var(--ink);
  border-radius: 4px; min-width: 220px; }
select.search { padding-right: 28px; }

/* Charts */
svg text { font-family: var(--sans); fill: var(--ink); }
.axis text { font-size: 11px; fill: var(--stone); }
.axis path, .axis line { stroke: var(--line); }
.axis.clean path { display: none; }
.grid line { stroke: #e3ddd1; }
.grid path { display: none; }
.label { font-size: 12px; }
.muted { fill: var(--stone); }
.hover-line { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 2 3; }
.tip { position: absolute; pointer-events: none; z-index: 40; background: var(--ink); color: var(--paper); font-family: var(--sans); font-size: 12px; line-height: 1.45;
  padding: 8px 10px; border-radius: 4px; max-width: 260px; opacity: 0; transition: opacity .1s; }
.tip b { font-weight: 700; }
.tip .sw { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 6px; }

/* Small multiples */
.multiples { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 18px 16px; }
.mult { cursor: pointer; border: 0; background: none; padding: 0; text-align: left; color: inherit; }
.mult:hover .mult-name { color: var(--red); }
.mult-head { display: flex; justify-content: space-between; align-items: baseline; font-family: var(--sans); }
.mult-name { font-size: 14px; font-weight: 700; }
.mult-meta { font-size: 11px; color: var(--stone); font-variant-numeric: tabular-nums; }
.mult-gloss { font-family: var(--sans); font-size: 11px; color: var(--stone); margin: 0 0 2px; min-height: 16px; }
.group-label { grid-column: 1 / -1; font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--stone); border-bottom: 1px solid var(--line); padding: 10px 0 6px; }

/* Explorer */
.explorer { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 28px; align-items: start; }
.explorer-main { min-width: 0; }
.term-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; margin: 4px 0 4px; }
.term-title h3 { font-size: 34px; line-height: 1.1; margin: 0; }
.term-gloss { font-size: 18px; color: #3b3935; margin: 0 0 6px; }
.badge { font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: 3px 8px; border-radius: 3px;
  background: var(--paper-deep); color: var(--ink); }
.badge.rising { background: var(--blue-tint); color: #1f3a49; }
.badge.faded { background: var(--red-tint); color: #7a2e1f; }
.badge.cooling { background: var(--ochre-tint); color: #6e5022; }
.badge.staple { background: var(--paper-deep); }
.warn { font-family: var(--sans); font-size: 12px; color: #6e5022; background: var(--ochre-tint); padding: 8px 10px; border-radius: 4px; margin: 8px 0; }
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--ink); margin: 14px 0 6px; }
.facts div { padding: 8px 8px 8px 0; border-bottom: 1px solid var(--line); }
.facts b { display: block; font-size: 22px; font-weight: 400; font-variant-numeric: tabular-nums lining-nums; }
.facts span { font-family: var(--sans); font-size: 11px; color: var(--stone); }
.side h4 { font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; margin: 18px 0 6px; color: var(--stone); }
.side h4:first-child { margin-top: 0; }
.plist { list-style: none; margin: 0; padding: 0; font-family: var(--sans); font-size: 13px; }
.plist li { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0; border-bottom: 1px solid var(--line); }
.plist li span:last-child { color: var(--stone); white-space: nowrap; font-variant-numeric: tabular-nums; }
.plist .t { display: block; color: var(--stone); font-size: 11px; }
.term-index { display: flex; flex-wrap: wrap; gap: 4px 6px; margin: 0 0 22px; max-height: 136px; overflow: auto; padding: 8px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.chip-n { color: var(--stone); margin-left: 4px; font-variant-numeric: tabular-nums; }
.chip[aria-pressed="true"] .chip-n { color: var(--paper); opacity: .7; }
.term-index button { font-family: var(--sans); font-size: 12px; border: 0; background: none; padding: 3px 5px; cursor: pointer; color: var(--ink); border-radius: 3px; }
.term-index button:hover { color: var(--red); }
.term-index button[aria-current="true"] { background: var(--ink); color: var(--paper); }

/* Cards (who started it) */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.card { border: 1px solid var(--line); background: var(--paper); border-radius: 6px; padding: 16px 18px; }
.card h3 { margin: 0 0 2px; font-size: 24px; }
.card .g { font-family: var(--sans); font-size: 12px; color: var(--stone); margin: 0 0 10px; }
.card .row { display: grid; grid-template-columns: 96px 1fr; gap: 8px; font-family: var(--sans); font-size: 13px; padding: 6px 0; border-top: 1px solid var(--line); }
.card .row > span:first-child { font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--stone); padding-top: 2px; }
.card .row .who { line-height: 1.5; }
.card .yr { color: var(--stone); font-variant-numeric: tabular-nums; }

/* Meaning shift */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.colloc { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 18px; }
.colloc h5 { font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; margin: 0 0 6px; color: var(--stone);
  border-bottom: 1px solid var(--ink); padding-bottom: 4px; }
.colloc ol { list-style: none; margin: 0; padding: 0; font-family: var(--sans); font-size: 13px; }
.colloc li { display: flex; justify-content: space-between; padding: 3px 0; border-bottom: 1px solid var(--line); }
.colloc li span:last-child { color: var(--stone); font-variant-numeric: tabular-nums; font-size: 11px; }

/* Regions */
.region-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px; }
.region-col h4 { font-family: var(--sans); font-size: 13px; font-weight: 700; margin: 0 0 2px; }
.region-col .n { font-family: var(--sans); font-size: 11px; color: var(--stone); margin: 0 0 8px; }
.wordbars { list-style: none; margin: 0; padding: 0; font-family: var(--sans); font-size: 13px; }
.wordbars li { position: relative; padding: 3px 6px; margin: 2px 0; display: flex; justify-content: space-between; }
.wordbars li .bar { position: absolute; inset: 0 auto 0 0; background: var(--blue-tint); z-index: 0; border-radius: 2px; }
.wordbars li span { position: relative; z-index: 1; }
.wordbars li span:last-child { color: var(--stone); font-variant-numeric: tabular-nums; font-size: 11px; }

.method { background: var(--paper-deep); margin: 72px -20px 0; padding: 48px 20px 56px; }
.method h2 { font-size: 26px; margin: 0 0 14px; }
.method p, .method li { font-size: 16px; }
.method ul { padding-left: 20px; }
footer { font-family: var(--sans); font-size: 12px; color: var(--stone); max-width: var(--wide); margin: 0 auto; padding: 24px 0 40px; }

@media (max-width: 900px) {
  .explorer { grid-template-columns: 1fr; }
  .colloc { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  body { font-size: 17px; }
  header.hero { padding-top: 40px; }
  header.hero .dek { font-size: 18px; }
  .multiples { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards { grid-template-columns: 1fr; }
  .search { min-width: 0; width: 100%; }
  #cat-chips, #meaning-tabs { flex-wrap: nowrap; overflow-x: auto; width: 100%; padding-bottom: 4px; -webkit-overflow-scrolling: touch; }
  #cat-chips .chip, #meaning-tabs .chip { flex: 0 0 auto; }
}