:root {
  --bg: #fff;
  --ink: #202124;
  --muted: #5f6368;
  --line: #d9d9d9;
  --line-dark: #b9b9b9;
  --soft: #f6f6f6;
  --link: #0645ad;
  --focus: #8ab4f8;
  --warning: #9c2f20;
  --sans: Arial, Helvetica, sans-serif;
  --content: 980px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.52;
}
button, input, select { font: inherit; }
a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: #003f8f; }

.site-rail {
  width: min(var(--content), calc(100% - 32px));
  margin: 0 auto;
  padding: 17px 0 12px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 10px 24px;
  flex-wrap: nowrap;
}
.brand {
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}
.brand:hover { color: var(--ink); }
.site-rail nav {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: nowrap;
}
.site-rail nav a {
  color: #444;
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}
.site-rail nav a:hover { text-decoration: underline; }
.site-rail nav a.active {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
.site-rail nav a span { display: none; }
.rail-footer {
  margin-left: auto;
  font-size: 12px;
  white-space: nowrap;
}
.rail-footer span { display: none; }

main { margin: 0; }
.page-intro,
.section,
.page-directory,
.site-footer {
  width: min(var(--content), calc(100% - 32px));
  margin-left: auto;
  margin-right: auto;
}
.page-intro {
  padding: 44px 0 34px;
  border-bottom: 1px solid var(--line);
}
.home-intro { padding-top: 48px; }
h1, h2, h3, h4 { margin: 0; }
h1 {
  max-width: 760px;
  font-size: 34px;
  line-height: 1.18;
  font-weight: 700;
}
.page-intro-compact { padding-top: 36px; padding-bottom: 28px; }
.page-intro-compact h1 { font-size: 30px; }
.intro-copy {
  margin: 12px 0 0;
  max-width: 740px;
  color: #45494d;
  font-size: 16px;
  line-height: 1.58;
}
.intro-note {
  margin: 8px 0 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 14px;
}
.intro-links {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}
.intro-links a { font-size: 13px; }

.section {
  padding: 32px 0 40px;
  border-bottom: 1px solid var(--line);
}
.section-muted { background: transparent; }
.section-heading { margin-bottom: 18px; }
.section-heading h2,
h2 {
  font-size: 22px;
  line-height: 1.25;
  font-weight: 700;
}
.section-heading p,
.predictor-copy p {
  margin: 6px 0 0;
  color: var(--muted);
  max-width: 720px;
}

.page-directory { padding: 28px 0 52px; }
.directory-list { border-top: 1px solid var(--line-dark); }
.directory-list a {
  display: block;
  padding: 14px 0 15px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}
.directory-list a:hover strong { text-decoration-thickness: 2px; }
.directory-list a > span,
.directory-list b { display: none; }
.directory-list strong {
  color: var(--link);
  font-size: 16px;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.directory-list p {
  margin: 3px 0 0;
  color: var(--muted);
  max-width: 760px;
  font-size: 14px;
}

.dataset-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0 18px;
  border-bottom: 1px solid var(--line-dark);
}
.dataset-tab {
  appearance: none;
  margin: 0 0 -1px;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  padding: 7px 0 9px;
  text-align: left;
  color: var(--link);
  font-size: 13px;
  line-height: 1.25;
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.dataset-tab span {
  display: block;
  margin-top: 1px;
  color: #777;
  font-size: 11px;
  font-weight: 400;
  text-decoration: none;
}
.dataset-tab:hover { color: #003f8f; }
.dataset-tab.active {
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
  font-weight: 700;
  text-decoration: none;
}
.dataset-tab.active span { color: #666; }

.predictor-card {
  background: #fff;
  padding: 24px 0 0;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.predictor-copy { margin-bottom: 18px; }
.predictor-copy h3 { font-size: 18px; line-height: 1.3; }
.predictor-layout {
  display: grid;
  grid-template-columns: minmax(340px, 1.05fr) minmax(260px, .95fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.control-panel {
  padding: 19px 24px 20px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(150px, 1fr));
  gap: 12px 14px;
}
.field { display: grid; gap: 4px; }
.field.full { grid-column: 1 / -1; }
.field span, .score-filters span {
  color: #444;
  font-size: 12px;
  font-weight: 700;
}
.field em { color: #777; font-style: normal; font-weight: 400; }
input, select {
  width: 100%;
  min-height: 36px;
  padding: 0 8px;
  border: 1px solid #aaa;
  border-radius: 0;
  background: #fff;
  color: var(--ink);
  font-size: 13px;
}
input:focus, select:focus, button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}
.button {
  grid-column: 1 / -1;
  justify-self: start;
  min-height: 36px;
  padding: 0 13px;
  border: 1px solid #222;
  border-radius: 0;
  background: #333;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.button:hover { background: #111; }
.input-note {
  grid-column: 1 / -1;
  min-height: 18px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
.prediction-panel {
  padding: 20px 0 20px 24px;
  border-left: 1px solid var(--line);
}
.result-label {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}
.large-result {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 10px;
  color: var(--ink);
}
.large-result span { font-size: 38px; line-height: 1; font-weight: 700; }
.large-result small { font-size: 14px; font-weight: 700; color: #555; }
.result-copy { margin: 0 0 14px; color: #555; font-size: 13px; }
.detail-block { border-top: 1px solid var(--line); padding-top: 12px; color: var(--muted); font-size: 13px; }
.detail-block h4 { margin: 0 0 5px; color: var(--ink); font-size: 14px; }
.detail-block ul { margin: 0; padding-left: 18px; }
.measure-grid { display: grid; grid-template-columns: repeat(2, minmax(125px, 1fr)); gap: 9px 14px; }
.measure { border-top: 1px solid var(--line); padding-top: 7px; }
.measure span { display: block; color: var(--muted); font-size: 11px; }
.measure strong { display: block; margin-top: 1px; font-size: 16px; }

.comparison-block { margin-top: 20px; }
.comparison-head { margin-bottom: 8px; }
.comparison-head h4 { font-size: 15px; }
.comparison-head p { margin: 3px 0 0; color: var(--muted); font-size: 12px; max-width: 620px; }
.model-table, .score-table, .coverage-table { border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); background: #fff; }
.model-row {
  display: grid;
  grid-template-columns: 1.25fr .85fr .7fr .7fr;
  gap: 12px;
  padding: 9px 8px;
  border-top: 1px solid var(--line);
  align-items: center;
  font-size: 13px;
}
.model-row:first-child { border-top: 0; }
.model-row.header, .score-row.header, .coverage-row.header {
  background: var(--soft);
  color: #555;
  font-size: 11px;
  font-weight: 700;
}
.model-row.selected { background: #f7f9fc; }
.model-row small { display: block; color: var(--muted); font-weight: 400; margin-top: 2px; }

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0 18px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line-dark);
}
.chart-tab {
  margin: 0 0 -1px;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  min-height: 34px;
  padding: 0 0 7px;
  color: var(--link);
  font-size: 13px;
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.chart-tab:hover { color: #003f8f; }
.chart-tab.active {
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
  font-weight: 700;
  text-decoration: none;
}
.chart-wrap { border-bottom: 1px solid var(--line); background: #fff; padding: 10px 0 14px; }
svg { width: 100%; height: auto; overflow: visible; }
.axis, .grid-line { stroke: #ddd; stroke-width: 1; }
.line-series { fill: none; stroke-width: 2; }
.point { fill: #fff; stroke-width: 1.6; }
.chart-label { fill: var(--muted); font: 11px var(--sans); }
.chart-title { fill: var(--ink); font: 700 14px var(--sans); }
.chart-legend { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; color: var(--muted); font-size: 12px; }
.legend-swatch { display: inline-block; width: 15px; height: 2px; vertical-align: middle; margin-right: 5px; }
.trend-reading { margin-top: 10px; color: var(--muted); max-width: 820px; font-size: 13px; }

.transfer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
  gap: 18px 28px;
  margin-bottom: 26px;
}
.transfer-card { border-top: 1px solid var(--line-dark); padding: 10px 0 0; background: transparent; }
.transfer-card span { display: block; color: var(--muted); font-size: 12px; font-weight: 700; }
.transfer-card strong { display: block; margin-top: 3px; font-size: 22px; color: var(--ink); }
.transfer-card p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.score-head { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin-bottom: 10px; }
.score-head h3 { font-size: 18px; }
.score-head p { color: var(--muted); margin: 3px 0 0; font-size: 13px; }
.score-filters { display: flex; gap: 8px; flex-wrap: wrap; }
.score-filters label { display: grid; gap: 3px; }
.score-row {
  display: grid;
  grid-template-columns: 1.35fr .8fr .7fr .7fr;
  gap: 12px;
  padding: 9px 8px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.score-row:first-child { border-top: 0; }
.coverage-row {
  display: grid;
  grid-template-columns: 1fr .55fr 1.6fr;
  gap: 18px;
  padding: 10px 8px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}
.coverage-row:first-child { border-top: 0; }
.notes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 24px;
  max-width: 760px;
}
.notes-grid article { border-top: 1px solid var(--line); padding: 14px 0 0; }
.notes-grid h3 { font-size: 15px; margin-bottom: 4px; }
.notes-grid p { color: var(--muted); margin: 0; font-size: 13px; }
.build-status { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fafafa; padding: 16px 12px; color: var(--muted); }
.build-status h4 { margin: 0 0 6px; color: var(--ink); font-size: 15px; }
.build-status code { background: #eee; padding: 1px 3px; font-family: Consolas, Monaco, monospace; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 16px;
  padding-bottom: 26px;
  color: #777;
  font-size: 12px;
}
.site-footer a { color: #555; }

@media (max-width: 820px) {
  .site-rail { display: block; }
  .site-rail nav { width: 100%; margin-top: 8px; gap: 8px 16px; flex-wrap: wrap; }
  .rail-footer { display: none; }
  .predictor-layout { grid-template-columns: 1fr; }
  .prediction-panel { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .score-head { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 600px) {
  body { font-size: 14px; }
  .site-rail,
  .page-intro,
  .section,
  .page-directory,
  .site-footer { width: calc(100% - 24px); }
  .site-rail { padding-top: 13px; }
  .brand { font-size: 13px; }
  .site-rail nav { gap: 8px 13px; margin-top: 8px; }
  .site-rail nav a { font-size: 12px; }
  .page-intro { padding-top: 34px; padding-bottom: 26px; }
  .home-intro { padding-top: 38px; }
  h1 { font-size: 29px; }
  .page-intro-compact h1 { font-size: 27px; }
  .intro-copy { font-size: 15px; }
  .section { padding-top: 27px; padding-bottom: 34px; }
  h2, .section-heading h2 { font-size: 20px; }
  .page-directory { padding-top: 24px; padding-bottom: 40px; }
  .dataset-tabs { gap: 0 14px; }
  .dataset-tab { font-size: 12px; }
  .predictor-card { padding-top: 20px; }
  .control-panel { grid-template-columns: 1fr; padding-right: 0; }
  .model-row, .score-row, .coverage-row { grid-template-columns: 1fr; gap: 2px; padding: 10px 6px; }
  .model-row.header, .score-row.header, .coverage-row.header { display: none; }
  .transfer-grid { grid-template-columns: 1fr; }
  .score-filters { width: 100%; display: grid; grid-template-columns: 1fr; }
  .score-filters select { width: 100%; }
  .site-footer { flex-direction: column; gap: 3px; }
  .chart-wrap { overflow-x: auto; }
  #trend-chart { min-width: 660px; }
}