styles.css

:root {
  color-scheme: light;
  --background: #ffffff;
  --layer: #f4f4f4;
  --text: #161616;
  --secondary: #525252;
  --border: #c6c6c6;
  --blue: #0f62fe;
  --blue-hover: #0043ce;
  --blue-light: #edf5ff;
  --warning: #fff8e1;
  font-family: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--background);
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
button, input, select { font: inherit; border-radius: 0; }
button, a, input, select, summary { -webkit-tap-highlight-color: transparent; }
button { min-height: 44px; padding: 10px 18px; background: var(--blue); color: white; border: 1px solid transparent; cursor: pointer; }
button:hover { background: var(--blue-hover); }
button:disabled { cursor: wait; background: var(--layer); color: var(--secondary); }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-hover); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
main:focus { outline: none; }
p { margin: 0 0 16px; max-width: 80ch; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; overflow-wrap: anywhere; }
h1 { font-size: clamp(36px, 4.5vw, 56px); font-weight: 300; letter-spacing: -1.2px; }
h2 { font-size: 24px; font-weight: 400; margin-bottom: 16px; }
h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
h4 { font-size: 16px; font-weight: 600; margin-bottom: 12px; }
small { display: block; font-size: 12px; line-height: 1.5; color: var(--secondary); margin-top: 5px; }
.mono { font-family: 'IBM Plex Mono', Menlo, monospace; font-size: 12px; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.muted, .footnote { color: var(--secondary); }
.footnote { font-size: 13px; margin-top: 16px; }
.boot { padding: 40px 24px; }
.skip-link { position: fixed; z-index: 100; top: 0; left: 16px; padding: 12px 20px; background: white; transform: translateY(-120%); }
.skip-link:focus { transform: translateY(0); }
.masthead {
  background: #161616;
  color: white;
  display: flex;
  align-items: stretch;
  padding: 0 32px;
  min-height: 56px;

  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid #393939;
}
.masthead-bar { display: flex; align-items: stretch; min-height: 56px; }
.brand { display: flex; align-items: center; gap: 12px; padding: 0 32px 0 0; font-weight: 600; color: white; white-space: nowrap; text-decoration: none; }
.brand:hover { color: white; }
.menu-toggle { display: none; width: 48px; min-height: 48px; margin: 4px 0 4px auto; padding: 0; border: 0; background: transparent; color: white; cursor: pointer; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.menu-toggle:hover { background: #262626; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: currentColor; transition: transform 160ms ease, opacity 160ms ease; }
.menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.masthead nav { display: flex; flex-wrap: wrap; }
.masthead nav a { display: flex; align-items: center; padding: 16px 18px 13px; color: #c6c6c6; text-decoration: none; border-bottom: 3px solid transparent; font-size: 14px; }
.masthead nav a:hover { color: white; background: #262626; }
.masthead nav a[aria-current='page'] { color: white; background: #262626; border-bottom-color: #78a9ff; }
.masthead :focus-visible { outline-color: white; outline-offset: -4px; }
main { max-width: 1536px; min-height: calc(100vh - 150px); margin: 0 auto; padding: 0 40px 64px; }
.page-heading { padding: 48px 0 28px; }
.page-heading p { font-size: 18px; color: var(--secondary); margin: 20px 0 0; }
.overview-heading { display: grid; grid-template-columns: 2fr 1fr; gap: 64px; padding: 64px 0 48px; }
.overview-heading h1 { font-size: clamp(40px, 5vw, 68px); line-height: 1.1; margin-bottom: 24px; }
.overview-heading p { font-size: 18px; max-width: 62ch; color: var(--secondary); }
.overview-heading aside { border-left: 2px solid var(--blue); padding: 0 0 0 28px; align-self: end; }
.overview-heading aside strong { display: block; font-size: 28px; font-weight: 300; margin: 10px 0 16px; }
.overview-heading aside p { font-size: 14px; }
.primary-link { display: inline-block; padding: 13px 24px; background: var(--blue); color: white; text-decoration: none; margin-top: 8px; }
.primary-link:hover { background: var(--blue-hover); color: white; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--border); gap: 1px; border: 1px solid var(--border); }
.stats a { background: var(--layer); padding: 24px; color: var(--text); text-decoration: none; display: flex; flex-direction: column; }
.stats a:hover { background: var(--blue-light); }
.stat-value { font-family: 'IBM Plex Mono', monospace; font-size: clamp(30px, 3vw, 44px); margin-bottom: 12px; line-height: 1.2; }
.stats strong { font-size: 14px; }
.overview-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; border-top: 1px solid var(--border); padding-top: 32px; margin-top: 48px; }
.overview-notes p { color: var(--secondary); }
.notice { background: var(--blue-light); border-left: 3px solid var(--blue); padding: 16px 20px; margin: 20px 0; max-width: none; font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.notice.warning { border-left-color: #8e6a00; background: var(--warning); }
.notice button { margin-left: auto; flex-shrink: 0; }
.secondary { background: transparent; color: var(--blue); border: 1px solid var(--blue); }
.secondary:hover { background: var(--blue-light); }
.filters { display: flex; flex-wrap: wrap; align-items: end; gap: 16px; padding: 20px; background: var(--layer); }
.filters label { display: flex; flex-direction: column; gap: 7px; font-size: 12px; color: var(--secondary); flex: 1 1 150px; }
.filters .search { flex: 3 1 280px; }
input, select { min-width: 0; width: 100%; min-height: 44px; border: 0; border-bottom: 1px solid #8d8d8d; background: white; color: var(--text); padding: 10px 12px; font-size: 14px; }
input::placeholder { color: #6f6f6f; opacity: 1; }
.filter-reset { flex: 0 0 auto; }
.checkbox { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 14px; min-height: 44px; }
.checkbox input { width: 18px; height: 18px; min-height: 18px; accent-color: var(--blue); flex-shrink: 0; }
.section { margin-top: 48px; }
.section-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin: 20px 0; font-size: 14px; }
.section-toolbar h2, .section-toolbar p { margin: 0; }
.result-count { font-size: 14px; margin: 20px 0 12px; color: var(--secondary); }
.empty { padding: 32px 24px; background: var(--layer); border-left: 2px solid var(--border); color: var(--secondary); font-size: 14px; }
.tag { display: inline-block; background: var(--blue-light); color: #0043ce; padding: 3px 8px; border-radius: 12px; font-size: 12px; line-height: 1.4; vertical-align: middle; }
.tag.warning { background: var(--warning); color: #684e00; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.text-button { border: 0; padding: 6px 0; min-height: 44px; background: transparent; color: var(--blue); text-align: left; font-weight: 600; overflow-wrap: anywhere; }
.text-button:hover { background: transparent; color: var(--blue-hover); text-decoration: underline; text-underline-offset: 3px; }
.table-scroll { overflow-x: auto; width: 100%; border: 1px solid var(--border); }
table { border-collapse: collapse; width: 100%; font-size: 14px; text-align: left; }
caption { text-align: left; padding: 12px 16px; background: var(--layer); color: var(--secondary); font-size: 12px; }
th, td { padding: 16px; border-bottom: 1px solid #e0e0e0; vertical-align: top; min-width: 135px; overflow-wrap: anywhere; }
thead th { background: #e0e0e0; font-weight: 600; white-space: nowrap; }
tbody th { min-width: 220px; max-width: 310px; font-weight: 400; }
tbody tr:last-child > * { border-bottom: 0; }
tbody tr:hover { background: #f8f8f8; }
td p { font-size: 13px; min-width: 220px; margin-top: 12px; }
.date-facts { display: grid; grid-template-columns: max-content minmax(130px, 1fr); gap: 5px 16px; font-size: 12px; margin: 0; min-width: 275px; }
.date-facts dt { color: var(--secondary); }
dd { margin: 0; overflow-wrap: anywhere; }
.timeline { margin-top: 24px; }
.timeline-month { display: grid; grid-template-columns: 170px 1fr; gap: 24px; }
.timeline-month > h2 { font-size: 20px; padding-top: 4px; }
.timeline-month ol { list-style: none; padding: 0 0 16px 24px; margin: 0; border-left: 1px solid var(--border); }
.timeline-month li { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 24px; position: relative; padding: 0 0 32px; }
.timeline-month li::before { content: ''; position: absolute; width: 9px; height: 9px; background: var(--blue); top: 9px; left: -29px; border: 2px solid white; outline: 1px solid var(--blue); border-radius: 50%; }
.timeline-month time { font-family: 'IBM Plex Mono', monospace; font-size: 12px; padding-top: 4px; color: var(--secondary); }
.event-body { padding-bottom: 24px; border-bottom: 1px solid #e0e0e0; }
.event-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin-bottom: 12px; font-size: 12px; color: var(--secondary); }
.event-body h3 { font-size: 20px; }
.event-body p { font-size: 14px; color: var(--secondary); margin-bottom: 8px; }
.event-body .event-caveat { color: var(--text); font-weight: 600; }
.event-body .text-button { font-size: 14px; }
details { margin-top: 16px; }
summary { font-size: 14px; color: var(--blue); cursor: pointer; padding: 10px 0; min-height: 44px; }
summary:hover { color: var(--blue-hover); }
.source-list { list-style: none; padding: 0; margin: 12px 0 0; font-size: 13px; }
.source-list li { display: block; padding: 0 0 12px; overflow-wrap: anywhere; }
.source-list li::before { display: none; }
.source-list small { margin-top: 3px; }
.chart-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; margin-top: 32px; }
.chart-panel { min-width: 0; padding: 24px; background: var(--layer); border-top: 2px solid var(--blue); }
.chart-panel > p { font-size: 14px; color: var(--secondary); }
.chart-panel .empty { padding-left: 0; }
.chart-panel.wide { grid-column: 1 / -1; }
.chart-panel table { background: white; }
.chart-panel .table-scroll { border: 0; }
.bars { list-style: none; padding: 0; margin: 24px 0 0; }
.bars li { margin-top: 18px; }
.bar-label { display: flex; justify-content: space-between; gap: 16px; font-size: 13px; margin-bottom: 7px; }
.bar-label > span { overflow-wrap: anywhere; min-width: 0; }
.bar-label strong { white-space: nowrap; font-weight: 400; }
.bar-track, .feature-meter { background: #e0e0e0; height: 6px; }
.bar-track > div, .feature-meter > span { display: block; height: 100%; background: var(--blue); }
.feature-meter { margin-bottom: 12px; min-width: 150px; }
.plot { width: 100%; height: auto; display: block; max-height: 380px; margin: 24px 0 8px; }
.plot text { font-family: 'IBM Plex Mono', monospace; font-size: 12px; fill: var(--secondary); }
.grid-line { stroke: #c6c6c6; stroke-width: 1; }
.free-point { fill: var(--blue); opacity: .8; }
.paid-point { fill: #161616; opacity: .65; }
.prose-list { max-width: 100ch; padding-left: 22px; font-size: 14px; color: var(--secondary); }
.prose-list li { margin-bottom: 12px; }
.record-panel { padding: 20px; margin: 16px 0; background: var(--layer); }
.record-fields { display: grid; grid-template-columns: minmax(110px, 180px) minmax(0, 1fr); gap: 10px 20px; margin: 16px 0; font-size: 14px; }
.record-fields dt { color: var(--secondary); overflow-wrap: anywhere; }
.record-fields .record-fields { margin: 0; grid-template-columns: minmax(80px, 130px) minmax(0, 1fr); }
.record-list { padding-left: 18px; margin: 0; }
.record-list > li { margin-bottom: 12px; }
.dataset-list { list-style: none; padding: 0; }
.dataset-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.dataset-list a { min-width: 160px; }
.dataset-list button { margin-left: auto; }
dialog { border: 0; border-top: 3px solid var(--blue); padding: 0; width: min(900px, calc(100vw - 48px)); max-height: calc(100dvh - 48px); color: var(--text); background: white; overflow-y: auto; overscroll-behavior: contain; }
dialog::backdrop { background: rgba(22, 22, 22, .65); }
.dialog-header { position: sticky; top: 0; background: white; z-index: 2; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: start; gap: 20px; padding: 24px 32px; }
.dialog-header p { font-size: 12px; margin: 0 0 6px; }
.dialog-header h2 { font-size: 28px; margin: 0; }
.dialog-header button { flex-shrink: 0; }
.dialog-content { padding: 24px 32px 40px; }
.dialog-content > section { margin-top: 28px; padding-top: 24px; border-top: 1px solid #e0e0e0; }
.dialog-content p { font-size: 14px; }
.related-events { list-style: none; padding: 0; font-size: 14px; }
.related-events > li { padding: 16px 0; border-bottom: 1px solid var(--border); }
.related-events p { margin: 8px 0; }
footer { background: #161616; color: #c6c6c6; padding: 24px 40px; display: flex; flex-wrap: wrap; gap: 16px 32px; font-size: 12px; }
footer strong { color: white; }
footer a { color: #a6c8ff; margin-left: auto; }
footer a:hover { color: white; }
.since-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 32px; font-size: 14px; }
.since-list li { margin: 0; }
.since-list strong { font-family: 'IBM Plex Mono', monospace; font-weight: 600; }
.history { margin-top: 24px; }
.history-era { display: grid; grid-template-columns: 240px 1fr; gap: 24px; }
.history-era-heading { padding-top: 4px; }
.history-era-heading h2 { font-size: 20px; margin-bottom: 4px; }
.history-era-heading small { display: block; margin-bottom: 8px; color: var(--secondary); font-family: 'IBM Plex Mono', monospace; font-size: 11px; }
.history-era-heading p { margin: 0; color: var(--secondary); font-size: 13px; line-height: 1.5; }
.history-era ol { list-style: none; padding: 0 0 16px 24px; margin: 0; border-left: 1px solid var(--border); }
.history-era li { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 24px; position: relative; padding: 0 0 32px; }
.history-era li::before { content: ''; position: absolute; width: 9px; height: 9px; background: var(--blue); top: 9px; left: -29px; border: 2px solid white; outline: 1px solid var(--blue); border-radius: 50%; }
.history-era time { font-family: 'IBM Plex Mono', monospace; font-size: 12px; padding-top: 4px; color: var(--secondary); }
.subnav { display: flex; flex-wrap: wrap; gap: 24px; border-bottom: 1px solid var(--border); margin-top: 24px; }
.subnav a { padding: 12px 0; text-decoration: none; }
.subnav a[aria-current='page'] { border-bottom: 2px solid var(--blue); font-weight: 600; }
.alphabet { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 20px; }
.alphabet button { min-width: 44px; padding: 8px; }
.alphabet button[aria-pressed='true'] { background: var(--blue); color: white; }
.change-list { list-style: none; padding: 0; }
.change-list > li { border-bottom: 1px solid var(--border); padding-bottom: 12px; overflow-wrap: anywhere; }
.change-list summary .tag { margin-right: 8px; }
.glossary-entry { scroll-margin-top: 24px; }
.glossary-entry:target, .glossary-entry:focus { background: var(--blue-light); }
.history-era .source-list li { display: block; padding: 0 0 12px; }
.history-era .source-list li::before { display: none; }
.glossary { columns: 2; column-gap: 48px; margin-top: 24px; }
.glossary-entry { break-inside: avoid; padding: 0 0 24px; }
.glossary-entry h3 { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; font-size: 18px; }
.glossary-entry .anchor { color: var(--text); text-decoration: none; }
.glossary-entry .anchor:hover { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.glossary-entry p { margin: 0; font-size: 14px; color: var(--secondary); }
.glossary-entry .glossary-definition { color: var(--text); font-weight: 500; }
.glossary-entry .glossary-explanation { margin-top: 8px; line-height: 1.55; }
.glossary-example { margin-top: 8px !important; padding: 10px 12px; border-left: 2px solid var(--blue); background: var(--blue-light); color: var(--text) !important; }
.glossary-related { margin-top: 8px !important; font-size: 12px !important; }
.glossary-related a { margin-right: 8px; }
@media (max-width: 1100px) {
  .masthead { display: block; padding: 0 24px; }
  .masthead-bar { width: 100%; }
  .brand { min-height: 56px; }
  .menu-toggle { display: flex; }
  .masthead nav { display: none; width: 100%; border-top: 1px solid #393939; padding: 8px 0 12px; }
  .masthead.menu-open nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .masthead nav a { justify-content: flex-start; padding: 13px 16px 10px; border-bottom-width: 2px; }
  main { padding-inline: 24px; }
  .overview-heading { gap: 32px; }
  .timeline-month { grid-template-columns: 135px 1fr; gap: 16px; }
  .timeline-month li { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 720px) {
  .masthead { padding: 0 16px; }
  .brand { padding: 0; }
  .masthead.menu-open nav { grid-template-columns: 1fr; }
  .masthead nav a { padding: 13px 8px 10px; font-size: 14px; }
  main { padding: 0 16px 40px; }
  .page-heading { padding: 32px 0 24px; }
  .page-heading p { font-size: 16px; }
  .overview-heading { grid-template-columns: 1fr; padding: 36px 0 28px; gap: 28px; }
  .overview-heading aside { padding-left: 16px; }
  .overview-heading aside strong { font-size: 24px; }
  .overview-heading p { font-size: 16px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats a { padding: 20px 16px; }
  .overview-notes, .chart-grid { grid-template-columns: 1fr; gap: 24px; }
  .chart-panel.wide { grid-column: auto; }
  .chart-panel { padding: 20px 16px; }
  .chart-panel h2 { font-size: 22px; }
  .filters { gap: 12px; padding: 16px; }
  .filters .search { flex-basis: 100%; }
  .filters label { flex-basis: 125px; }
  .filter-reset { width: 100%; }
  .timeline-month { grid-template-columns: 1fr; gap: 8px; }
  .timeline-month ol { margin-left: 5px; padding-left: 20px; }
  .timeline-month li::before { left: -25px; }
  .timeline-month > h2 { margin-bottom: 12px; }
  .section { margin-top: 36px; }
  .notice { padding: 14px; }
  dialog { width: calc(100vw - 20px); max-height: calc(100dvh - 20px); }
  .dialog-header { padding: 16px; gap: 12px; }
  .dialog-header h2 { font-size: 22px; }
  .dialog-content { padding: 16px; }
  .record-fields, .record-fields .record-fields { grid-template-columns: 1fr; gap: 4px; }
  .record-fields dd { padding-bottom: 12px; }
  .record-fields .record-fields dd { padding-bottom: 6px; }
  .date-facts { min-width: 0; grid-template-columns: 110px minmax(100px, 1fr); }
  td .date-facts { min-width: 265px; }
  .history-era { grid-template-columns: 1fr; gap: 8px; }
  .history-era ol { margin-left: 5px; padding-left: 20px; }
  .history-era li { grid-template-columns: 1fr; gap: 8px; }
  .history-era li::before { left: -25px; }
  .glossary { columns: 1; }
  footer { padding: 24px 16px; }
  footer a { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}

/* Analysis: visual-first explanations */
.eyebrow { display: block; margin-bottom: 8px; font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.analysis-snapshot { margin: 12px 0 36px; padding: 28px; background: #161616; color: white; }
.analysis-snapshot-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 24px; }
.analysis-snapshot-heading h2 { margin-bottom: 0; font-size: clamp(24px, 3vw, 34px); }
.analysis-snapshot-heading p { margin: 0; color: #c6c6c6; font-size: 14px; }
.analysis-snapshot .eyebrow { color: #78a9ff; }
.analysis-stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: #525252; }
.analysis-stat { min-width: 0; padding: 22px; background: #262626; }
.analysis-stat-value { display: block; margin-bottom: 10px; font-family: 'IBM Plex Mono', monospace; font-size: clamp(30px, 3vw, 44px); line-height: 1; font-weight: 400; }
.analysis-stat h3 { margin-bottom: 8px; font-size: 15px; color: white; }
.analysis-stat p { margin: 0; font-size: 12px; line-height: 1.45; color: #c6c6c6; }
.analysis-guide { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(0, 2fr); gap: 32px; margin: 0 0 36px; padding: 28px; border: 1px solid var(--border); }
.analysis-guide h2 { margin-bottom: 0; }
.analysis-guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.analysis-guide-grid article { position: relative; padding-left: 48px; }
.guide-number { position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 32px; height: 32px; background: var(--blue-light); color: var(--blue); font-family: 'IBM Plex Mono', monospace; font-weight: 600; }
.analysis-guide-grid h3 { margin-bottom: 6px; font-size: 16px; }
.analysis-guide-grid p { margin: 0; font-size: 13px; color: var(--secondary); }
.feature-legend, .plot-key { display: flex; flex-wrap: wrap; gap: 12px 22px; align-items: center; margin: 18px 0 4px; font-size: 12px; color: var(--secondary); }
.feature-legend span, .plot-key span { display: inline-flex; align-items: center; gap: 7px; }
.legend-swatch { width: 22px; height: 7px; display: inline-block; }
.free-swatch { background: var(--blue); }
.paid-swatch { background: #161616; }
.feature-compare { margin-top: 20px; border-top: 1px solid var(--border); }
.feature-row { display: grid; grid-template-columns: minmax(160px, .7fr) minmax(0, 2fr); gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--border); }
.feature-name h3 { font-size: 17px; margin-bottom: 4px; }
.feature-name small { margin: 0; }
.feature-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.feature-group-label { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 8px; font-size: 12px; }
.feature-group-label span { color: var(--secondary); font-family: 'IBM Plex Mono', monospace; }
.feature-bar { height: 12px; background: #e0e0e0; overflow: hidden; }
.feature-bar > span { display: block; height: 100%; }
.feature-bar > .free { background: var(--blue); }
.feature-bar > .paid { background: #161616; }
.feature-group small { margin-top: 6px; }
.plot-key { padding: 12px 14px; background: white; border: 1px solid var(--border); }
.plot-direction { font-weight: 600; color: var(--text); }
.dot-key { display: inline-block; width: 10px; height: 10px; border-radius: 50%; }
.free-dot { background: var(--blue); }
.paid-dot { background: #161616; opacity: .75; }
.plot-zone { font-family: 'IBM Plex Sans', sans-serif !important; font-size: 11px !important; fill: #6f6f6f !important; }
.plain-note { display: flex; gap: 10px 16px; align-items: flex-start; padding: 14px 16px; margin: 12px 0 0; background: var(--blue-light); border-left: 3px solid var(--blue); font-size: 13px; }
.plain-note strong { white-space: nowrap; }
.health-strip { display: grid; grid-template-columns: repeat(2, minmax(0, 240px)); gap: 1px; background: var(--border); width: fit-content; max-width: 100%; margin: 16px 0; border: 1px solid var(--border); }
.health-strip > div { min-width: 210px; padding: 18px; background: var(--layer); }
.health-strip strong { display: block; font-family: 'IBM Plex Mono', monospace; font-size: 24px; font-weight: 400; }
.health-strip span { display: block; margin-top: 5px; color: var(--secondary); font-size: 12px; }
.methodology-details { border-top: 1px solid var(--border); margin-top: 20px; padding-top: 4px; }
.limit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.limit-card { padding: 20px; background: var(--layer); border-top: 2px solid var(--blue); }
.limit-card-top { display: flex; justify-content: space-between; align-items: start; gap: 12px; }
.limit-card h3 { margin-top: 4px; }
.limit-card dl { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 8px 14px; font-size: 13px; }
.limit-card dt { color: var(--secondary); }
.limit-card dd { margin: 0; }
.limit-card > a { display: inline-block; margin-top: 14px; font-size: 13px; }

@media (max-width: 900px) {
  .analysis-stat-grid { grid-template-columns: 1fr 1fr; }
  .analysis-guide { grid-template-columns: 1fr; }
  .analysis-guide-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .analysis-snapshot { padding: 20px 16px; margin-inline: -16px; }
  .analysis-snapshot-heading { display: block; }
  .analysis-snapshot-heading p { margin-top: 12px; }
  .analysis-stat-grid { grid-template-columns: 1fr 1fr; }
  .analysis-stat { padding: 16px; }
  .analysis-guide { padding: 20px 16px; }
  .feature-row { grid-template-columns: 1fr; gap: 14px; }
  .feature-groups { grid-template-columns: 1fr; gap: 16px; }
  .plot-key { align-items: flex-start; }
  .plain-note { display: block; }
  .plain-note strong { display: block; margin-bottom: 4px; }
  .health-strip { width: 100%; grid-template-columns: 1fr 1fr; }
  .health-strip > div { min-width: 0; }
}
@media (max-width: 440px) {
  .analysis-stat-grid, .health-strip { grid-template-columns: 1fr; }
}

/* Free providers: keep provider-wide allowances separate from $0/token endpoints */
.free-programs { margin-top: 28px; }
.free-program-grid { margin-top: 18px; }
.free-program-card { border-top-color: #24a148; }
.free-program-card .eyebrow { color: #198038; }
.free-program-card > p { min-height: 3.2em; color: var(--secondary); font-size: 13px; }
.free-program-card > small { display: block; margin-top: 8px; color: var(--secondary); }

/* Overview release highlights */
.release-highlights { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.release-highlight { border: 1px solid var(--border); background: var(--layer); padding: 20px; min-width: 0; }
.release-highlight > div:first-child { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.release-highlight time { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted); }
.release-highlight h3 { margin: 0 0 6px; }
.release-highlight p { margin: 8px 0; }
.release-highlight details { margin-top: 14px; }

@media (max-width: 760px) {
  .release-highlights { grid-template-columns: 1fr; }
}