@import url('https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400;6..72,500;6..72,600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --paper: #fcf8f1;
  --panel: #f3ede1;
  --ink: #1a1815;
  --sub: #544e46;
  --faint: #8b847a;
  --rule: #1a1815;
  --hair: #ddd4c4;
  --grid: #e9e2d5;
  --ox: #4d5223;
  --ox-dim: #8d9269;
  --ok: #2f5d3a;
  --warn: #8a6d1f;
  --bad: #a33d2e;
  --serif: 'Newsreader', Georgia, serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); font: 16px/1.5 var(--serif); }
a { color: var(--ink); }
a:hover { color: var(--ox); }
.gut { padding-left: clamp(20px, 3vw, 44px); padding-right: clamp(20px, 3vw, 44px); }
.eyebrow {
  font: 12px/1.6 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--sub); margin-bottom: 14px;
}

header {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(24px, 4vw, 64px); align-items: end;
  padding-top: 34px; padding-bottom: 26px; border-bottom: 2px solid var(--rule);
}
h1 { font-size: clamp(34px, 5.4vw, 56px); font-weight: 400; letter-spacing: -.02em; line-height: 1; }
h1 .dot { color: var(--ox); }
.thesis { font-size: clamp(15px, 1.5vw, 18px); color: var(--sub); margin-top: 14px; max-width: 62ch; }
.thesis strong { color: var(--ink); font-weight: 400; border-bottom: 1px solid var(--ox); }

.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 18px; }
.fact { border-top: 1px solid var(--hair); padding-top: 8px; }
.fact dt { font: 11px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.fact dd { font-size: 22px; }
.fact dd small { font-size: 13px; color: var(--sub); }

section { padding-top: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--hair); }

/* Prose beside a takeaway rather than a narrow column with a blank half.
   A wide screen should be used, not left empty. */
.split {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(20px, 3vw, 46px); align-items: start; margin-top: 8px;
}
.split p { max-width: none; }
.takeaway { border-left: 2px solid var(--ox); padding: 2px 0 2px 16px; }
.takeaway dt {
  font: 11px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  color: var(--faint); margin-top: 12px;
}
.takeaway dt:first-child { margin-top: 0; }
.takeaway dd { font-size: 19px; line-height: 1.35; }
.takeaway dd small { display: block; font-size: 13px; color: var(--sub); margin-top: 2px; }
h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 400; margin-bottom: 6px; }
h3 { font-size: 18px; font-weight: 400; margin: 22px 0 6px; }
p { max-width: 74ch; margin-bottom: 12px; color: var(--sub); }
/* The intro to a figure sits alone above it, so a 74ch cap leaves most of a wide
   screen blank. It gets more room; body prose inside a split gets none. */
p.lead { color: var(--ink); max-width: 104ch; }
p strong { color: var(--ink); font-weight: 400; }
code { font: .9em var(--mono); background: var(--panel); padding: 1px 4px; }

.figure { border: 1px solid var(--rule); background: var(--panel); margin-top: 20px; }
.figcap {
  font: 11px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  color: var(--sub); padding: 8px 14px; border-bottom: 1px solid var(--hair);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.toolbar {
  display: flex; gap: 14px; align-items: center; flex-wrap: wrap;
  padding: 10px 14px; border-bottom: 1px solid var(--hair);
}
.pick { display: flex; gap: 0; border: 1px solid var(--ink); }
.pick button {
  font: 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .07em;
  background: transparent; color: var(--sub); border: 0; border-right: 1px solid var(--hair);
  padding: 8px 10px; cursor: pointer;
}
.pick button:last-child { border-right: 0; }
.pick button[aria-pressed="true"] { background: var(--ox); color: var(--paper); }
.picklabel { font: 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--faint); }

.scrub { display: flex; align-items: center; gap: 10px; flex: 1 1 300px; min-width: 220px; }
.scrub input[type=range] { flex: 1; accent-color: var(--ox); min-width: 110px; }

.plot { display: block; width: 100%; height: auto; background: var(--paper); }

.readout {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  border-top: 1px solid var(--hair);
}
.readout div { padding: 9px 14px; border-right: 1px solid var(--hair); }
.readout div:last-child { border-right: 0; }
.readout dt { font: 10px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.readout dd { font-size: 19px; }
.readout dd small { font-size: 12px; color: var(--sub); }

.banner { padding: 9px 14px; border-top: 1px solid var(--hair); font: 12px/1.5 var(--mono); color: var(--sub); }
.banner.alarm { background: #f7e7e4; color: var(--bad); }
.banner.calm { background: #e9efe8; color: var(--ok); }

table.data { border-collapse: collapse; font: 13px/1.4 var(--mono); margin-top: 14px; width: 100%; }
table.data th, table.data td { border-bottom: 1px solid var(--hair); padding: 5px 10px 5px 0; text-align: right; }
table.data th:first-child, table.data td:first-child { text-align: left; }
table.data th { font-weight: 400; color: var(--faint); text-transform: uppercase; font-size: 11px; letter-spacing: .06em; }
table.data td.bad { color: var(--bad); }
table.data td.good { color: var(--ok); }

/* The losing axes as a row of cards, so they read as a set and fill the width. */
ul.map {
  list-style: none; display: grid; margin-top: 18px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  border: 1px solid var(--rule); background: var(--panel);
}
ul.map li {
  padding: 14px 16px; color: var(--sub); font-size: 15px; line-height: 1.45;
  border-right: 1px solid var(--hair); border-bottom: 1px solid var(--hair);
}
ul.map li b { color: var(--ink); font-weight: 400; display: block; margin-bottom: 4px; }
ul.map li .where { display: block; margin-top: 8px; font: 11px var(--mono); color: var(--ox); }

footer {
  padding-top: 26px; padding-bottom: 40px;
  font: 12px/1.7 var(--mono); color: var(--sub);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}

@media (max-width: 860px) {
  header { grid-template-columns: minmax(0, 1fr); gap: 26px; }
}

/* Wide content scrolls in its own box; the page itself never scrolls sideways. */
.grid-wrap { overflow-x: auto; padding: 4px 14px 10px; }
.grid-wrap table.data { margin-top: 6px; }
table.data th.why, table.data td.why { text-align: left; }
table.data td.why { text-align: left; color: var(--sub); font: 13px/1.45 var(--serif); }
table.data td.num { font-variant-numeric: tabular-nums; }

/* ---- shared nav shell ------------------------------------------------
   Written entirely in this page's own variables, so it takes the palette
   it is dropped into instead of importing a second one. */
html { scroll-padding-top: 96px; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px clamp(20px, 3vw, 44px);
}
.brand { font: 15px/1 var(--serif); text-decoration: none; color: var(--ink); }
.brand span { color: var(--ox); }
.navlinks { display: flex; gap: 18px; font: 12px/1 var(--mono); letter-spacing: .06em; }
.navlinks a { color: var(--sub); text-decoration: none; transition: color .18s ease; }
.navlinks a:hover { color: var(--ox); }
.tabs {
  position: sticky; top: 40px; z-index: 19;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule);
  display: flex; gap: 2px; overflow-x: auto; padding: 0 clamp(20px, 3vw, 44px);
}
.tabs a {
  flex: 0 0 auto; display: flex; align-items: center; min-height: 44px;
  padding: 0 13px; font: 11px/1 var(--mono); letter-spacing: .1em;
  text-transform: uppercase; color: var(--faint); text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.tabs a:hover { color: var(--sub); }
.tabs a[aria-current="true"] { color: var(--ox); border-bottom-color: var(--ox); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .tabs a, .navlinks a { transition: none; }
}

/* Brand marks in the nav, sized to the text and inheriting its colour. */
.navlinks a { display: inline-flex; align-items: center; gap: 7px; }
.navlinks svg { width: 15px; height: 15px; flex: 0 0 auto; }
.brand { letter-spacing: .005em; }