* { box-sizing: border-box; }
html { background: var(--page); color: var(--ink); scroll-padding-top: 24px; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; font: 15px/1.6 var(--sans); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
::selection { background: rgba(42, 120, 214, 0.22); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
button, input { border-radius: 2px; }
button { background: none; }
button:disabled { cursor: default; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
svg { vertical-align: middle; }
.container { max-width: 1216px; margin-inline: auto; padding-inline: 32px; }

/* Header */
.site-header { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding-block: 22px; border-bottom: 1px solid var(--rule); min-width: 0; }
.wordmark { display: inline-flex; align-items: center; gap: 9px; font-size: 15px; font-weight: 600; text-decoration: none; letter-spacing: -.015em; }
.wordmark:hover { color: inherit; }
.brand-mark { flex: none; width: 15px; height: 18px; fill: var(--accent); }
.version, .eyebrow { font: 11px/1.5 var(--mono); color: var(--ink-2); }
.version { border: 1px solid var(--rule); border-radius: 999px; padding: 2px 9px; font-size: 10.5px; white-space: nowrap; }
.updated { color: var(--muted); font: 11px/1.5 var(--mono); white-space: nowrap; }
.site-nav { margin-left: auto; display: flex; flex-wrap: wrap; align-items: center; gap: 4px; min-width: 0; }
.site-nav a { border-radius: 999px; padding: 6px 12px; color: var(--ink-2); font-size: 13.5px; text-decoration: none; }
.site-nav a:hover { background: var(--wash); color: var(--ink); }
.theme-toggle { display: inline-grid; place-items: center; width: 34px; height: 34px; margin-left: -6px; border: 0; border-radius: 999px; padding: 0; color: var(--ink-2); line-height: 1; }
.theme-toggle:hover { background: var(--wash); color: var(--ink); }
.theme-toggle svg { width: 17px; height: 17px; }

/* Title block: kept short so the leaderboard starts on the first screen. */
.hero { padding-top: 44px; }
.eyebrow { margin: 0 0 22px; letter-spacing: .09em; text-transform: uppercase; }
h1 { font: 400 clamp(30px, 3.5vw, 44px)/1.1 var(--serif); letter-spacing: -.02em; margin: 0 0 12px; text-wrap: balance; }
.hero-description { color: var(--ink-2); font-size: 16px; line-height: 1.55; max-width: 100ch; margin: 0; text-wrap: pretty; }
.hero-meta-row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 28px; margin-top: 16px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 6px 24px; margin: 0; font-size: 13px; }
.hero-meta > div { display: flex; align-items: baseline; gap: 6px; }
.hero-meta dd { order: -1; margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; }
.hero-meta dt { color: var(--muted); }
.text-link { margin-left: auto; color: var(--ink-2); font-size: 13px; text-decoration: none; white-space: nowrap; }
.text-link::after { content: ' →'; }
.text-link:hover { color: var(--ink); }
.board { margin-top: 26px; border: 1px solid var(--rule); border-radius: 16px; background: var(--surface); scroll-margin-top: 16px; }

/* Sections */
.section { margin-top: 112px; border-top: 1px solid var(--rule); padding-top: 40px; min-width: 0; }
h2 { font: 400 clamp(28px, 3.2vw, 38px)/1.12 var(--serif); letter-spacing: -.016em; margin: 0 0 28px; }
h3 { font: 400 21px/1.3 var(--serif); letter-spacing: -.01em; margin: 0 0 12px; }
p { margin: 0 0 16px; }
.muted { color: var(--muted); }
.section-lede { max-width: 70ch; margin: -14px 0 32px; color: var(--ink-2); font-size: 15.5px; text-wrap: pretty; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; transform: translateY(-180%); border-radius: 999px; padding: 8px 16px; background: var(--surface); box-shadow: var(--shadow); z-index: 10; }
.skip-link:focus { transform: none; }
.status-note { padding: 16px 0; color: var(--ink-2); }
.analysis-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; gap: 72px 48px; }
.analysis-grid figure { margin: 0; min-width: 0; }
.analysis-grid .full-width { grid-column: 1 / -1; }
.chart { position: relative; min-width: 0; }
.chart:empty::after { content: 'Loading chart…'; color: var(--muted); }

/* Method */
.method-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; }
.method-columns p { color: var(--ink-2); }
.method-reading { margin-block: 64px; }
.method-reading > h3 { margin-bottom: 20px; }
.method-glossary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 48px; margin: 0; }
.method-glossary > div { min-width: 0; border-top: 1px solid var(--rule); padding-top: 14px; }
.method-glossary dt { font-size: 13.5px; font-weight: 600; }
.method-glossary dd { margin: 5px 0 0; color: var(--ink-2); font-size: 13.5px; }
.method-check-list { display: grid; gap: 4px; margin: 8px 0 0; padding-left: 20px; }

/* Updates */
.updates-ledger { border-top: 1px solid var(--rule); }
.updates-day { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 24px; border-bottom: 1px solid var(--rule); padding: 12px 0; }
.updates-date-block { display: flex; flex-wrap: wrap; align-items: baseline; align-content: flex-start; gap: 6px; padding-top: 9px; }
.updates-date { color: var(--ink-2); font: 11px/1.5 var(--mono); }
.updates-launch { border: 1px solid var(--rule); border-radius: 999px; padding: 0 6px; color: var(--muted); font: 10px/1.6 var(--mono); }
.updates-models { margin: 0 -8px; padding: 0; list-style: none; }
.updates-models li + li { background: linear-gradient(var(--rule), var(--rule)) 8px 0 / calc(100% - 16px) 1px no-repeat; }
.update-model-button { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 12px; border: 0; border-radius: 6px; padding: 8px; text-align: left; }
.update-model-button:hover .update-model-name, .update-model-button:focus-visible .update-model-name { color: var(--ink); }
.update-model-button.is-selected, .update-model-button.is-highlighted { background: var(--wash); }
.update-model-button.is-receded { opacity: .5; }
.update-model-name { display: flex; align-items: center; gap: 9px; min-width: 0; color: var(--ink-2); font-size: 13.5px; overflow-wrap: anywhere; }
.update-model-meta { flex: 0 0 auto; color: var(--muted); font: 11px/1.4 var(--mono); white-space: nowrap; }
.updates-expand { margin-top: 8px; border: 0; padding: 6px 0; color: var(--ink-2); font-size: 12.5px; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.updates-expand:hover { color: var(--ink); }

/* Provenance and links */
.provenance { border-top: 1px solid var(--rule); padding-top: 24px; margin-top: 20px; display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 10px 24px; font: 12px/1.65 var(--mono); }
.provenance dt { color: var(--muted); }
.provenance dd { margin: 0; overflow-wrap: anywhere; user-select: text; }
.source-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; font-size: 13px; }
.source-links a { display: inline-flex; align-items: center; gap: 6px; height: 34px; border: 1px solid var(--axis); border-radius: 999px; padding: 0 14px; text-decoration: none; }
.source-links a:hover { border-color: var(--ink); color: var(--ink); }
.source-links a::after { content: '↗'; color: var(--muted); font-size: 11px; }
.source-links a[download]::after { content: '↓'; }

/* Footer */
.site-footer { margin-top: 128px; padding-block: 32px 48px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 12.5px; display: flex; justify-content: space-between; gap: 32px; }
.site-footer p { margin: 0; }
.footer-brand { display: flex; flex-direction: column; gap: 10px; max-width: 44ch; }
.footer-brand .wordmark { color: var(--ink); }
.footer-meta { display: flex; flex-direction: column; gap: 4px; max-width: 46ch; text-align: right; }

/* The page is revealed once results are in place, so the headline never changes on screen. */
.is-loading main > section, .is-loading .site-footer { visibility: hidden; }
#load-status { position: absolute; }
#load-status.is-error { position: static; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
@keyframes appear { from { opacity: 0; } }

@media (max-width: 1039px) {
  .updated { display: none; }
}
@media (max-width: 899px) {
  .analysis-grid { grid-template-columns: minmax(0, 1fr); gap: 56px; }
  .method-columns { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 640px) {
  .container { padding-inline: 16px; }
  .site-header { gap: 8px 12px; padding-block: 16px 10px; }
  .site-nav { order: 3; width: calc(100% + 12px); margin: 0 -6px; justify-content: space-between; gap: 0; }
  .site-nav a { padding: 6px; font-size: 13px; }
  .theme-toggle { margin: -4px -8px -4px auto; }
  .hero { padding-top: 28px; }
  .hero-description { font-size: 15px; }
  .hero-meta { gap: 4px 18px; }
  .text-link { margin-left: 0; }
  .board { margin-top: 20px; border-radius: 14px; }
  .section { margin-top: 72px; padding-top: 32px; }
  h2 { margin-bottom: 24px; }
  .section-lede { font-size: 15px; margin-bottom: 26px; }
  .provenance { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .provenance dd { margin-bottom: 12px; }
  .method-reading { margin-block: 48px; }
  .method-glossary { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .updates-day { grid-template-columns: 76px minmax(0, 1fr); gap: 12px; }
  .site-footer { margin-top: 80px; flex-direction: column; gap: 20px; }
  .footer-meta { text-align: left; }
}
@media (prefers-reduced-motion: no-preference) {
  button, a { transition: color 140ms, background-color 140ms, border-color 140ms, opacity 140ms; }
  #load-status { animation: appear 200ms 700ms both; }
  .is-ready .hero, .is-ready .board { animation: rise 560ms cubic-bezier(.2, .7, .2, 1) both; }
  .is-ready .board { animation-delay: 70ms; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}