:root {
  --paper: #f3f0e8;
  --paper-deep: #e9e5db;
  --white: #fffdfa;
  --ink: #18201d;
  --ink-soft: #5f655f;
  --muted: #666a64;
  --rule: #d5d1c7;
  --rule-strong: #b8b4aa;
  --green: #1d665b;
  --green-dark: #174f47;
  --green-soft: #d7e7e1;
  --coral: #a94130;
  --coral-soft: #f0d9d2;
  --gold-soft: #eee4cd;
  --serif: "Iowan Old Style", "Hoefler Text", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --max: 1180px;
  --nav-h: 62px;
}

* { box-sizing: border-box; }
html { background: var(--paper); scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 18px); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.62 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button, input { font: inherit; }
.wrap { width: min(100%, var(--max)); margin: 0 auto; padding-left: 32px; padding-right: 32px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.skip { position: absolute; left: -9999px; top: 10px; z-index: 100; padding: 10px 14px; background: var(--ink); color: var(--white); }
.skip:focus { left: 10px; }

.nav { position: sticky; top: 0; z-index: 20; min-height: var(--nav-h); border-bottom: 1px solid var(--rule); background: rgba(243,240,232,.92); backdrop-filter: blur(12px); }
.nav-inner { min-height: var(--nav-h); display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; margin-right: auto; text-decoration: none; color: var(--ink); }
.brand span { font: 12px/1 var(--mono); letter-spacing: .17em; text-transform: uppercase; white-space: nowrap; }
.brand b { color: var(--coral); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 25px; }
.nav-links a { color: var(--muted); font: 10px/1 var(--mono); letter-spacing: .09em; text-decoration: none; text-transform: uppercase; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
.nav-links .nav-cta { padding: 9px 12px; border: 1px solid var(--green); color: var(--green); }

.hero { border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(280px, .78fr); gap: 7%; padding-top: 82px; padding-bottom: 72px; }
.eyebrow, .card-kicker { margin: 0 0 18px; color: var(--coral); font: 10px/1.3 var(--mono); letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 13ch; margin-bottom: 24px; font: 400 clamp(46px, 6vw, 76px)/.98 var(--serif); letter-spacing: -.042em; text-wrap: balance; }
.standfirst { max-width: 61ch; margin-bottom: 0; color: var(--ink-soft); font: 19px/1.58 var(--serif); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 31px; }
.button { display: inline-block; padding: 13px 16px; border: 1px solid var(--green); color: var(--green); font: 10px/1 var(--mono); letter-spacing: .09em; text-decoration: none; text-transform: uppercase; }
.button.primary { background: var(--green); color: var(--white); }
.button:hover, .button:focus-visible { background: var(--green-dark); border-color: var(--green-dark); color: var(--white); }

.hero-note { align-self: end; padding: 28px; border-top: 3px solid var(--coral); background: var(--white); }
.hero-note h2 { margin-bottom: 11px; font: 400 27px/1.14 var(--serif); letter-spacing: -.015em; }
.hero-note > p:last-child { margin-bottom: 0; color: var(--ink-soft); font-size: 14px; }
.chart-mark { display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(4, 1fr); width: 100%; aspect-ratio: 2 / 1; margin-bottom: 25px; border: 1px solid var(--rule-strong); background: var(--rule); gap: 1px; }
.chart-mark span { background: var(--white); }
.chart-mark .chart-centre { grid-column: 2 / 4; grid-row: 2 / 4; display: grid; place-items: center; color: var(--coral); font: 13px/1 var(--mono); letter-spacing: .2em; }

.section { padding: 74px 0; border-bottom: 1px solid var(--rule); }
.section-intro { display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); gap: 8%; margin-bottom: 36px; }
.section-intro h2 { margin-bottom: 0; font: 400 clamp(32px, 4vw, 43px)/1.07 var(--serif); letter-spacing: -.027em; text-wrap: balance; }
.section-intro > p { max-width: 61ch; margin: 4px 0 0; color: var(--ink-soft); }

.finding-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--rule); background: var(--rule); }
.finding { min-height: 226px; padding: 27px; background: var(--white); }
.finding .card-kicker { margin-bottom: 31px; }
.finding h3 { margin-bottom: 10px; font: 400 24px/1.16 var(--serif); letter-spacing: -.012em; }
.finding > p:last-child { margin-bottom: 0; color: var(--ink-soft); font-size: 14px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--rule); background: var(--white); }
table { width: 100%; border-collapse: collapse; min-width: 840px; }
th, td { padding: 15px 16px; border-bottom: 1px solid var(--rule); text-align: right; vertical-align: middle; }
thead th { color: var(--muted); font: 9px/1.25 var(--mono); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
thead th:first-child, tbody td:first-child, .domain-table tbody th { text-align: left; }
thead th .sort-button { display: inline-flex; align-items: center; gap: 5px; padding: 0; border: 0; background: none; color: inherit; cursor: pointer; font: inherit; letter-spacing: inherit; text-transform: inherit; }
thead th .sort-button::after { content: "↕"; opacity: .35; }
thead th[aria-sort="ascending"] .sort-button, thead th[aria-sort="descending"] .sort-button { color: var(--coral); }
thead th[aria-sort="ascending"] .sort-button::after { content: "↑"; opacity: 1; }
thead th[aria-sort="descending"] .sort-button::after { content: "↓"; opacity: 1; }
.score-header { position: relative; display: inline-flex; align-items: center; gap: 5px; }
.score-tooltip-trigger { display: inline-grid; place-items: center; width: 14px; height: 14px; padding: 0; border: 1px solid currentColor; border-radius: 50%; background: var(--white); color: inherit; cursor: help; font: 700 9px/1 var(--sans); }
.score-tooltip { position: absolute; z-index: 4; top: calc(100% + 9px); right: 0; display: none; width: 210px; padding: 10px 11px; border: 1px solid var(--rule-strong); background: var(--ink); color: var(--white); text-align: left; font: 11px/1.45 var(--sans); letter-spacing: 0; text-transform: none; white-space: normal; box-shadow: 0 5px 16px rgba(24,32,29,.16); }
.score-tooltip-trigger:hover + .score-tooltip, .score-tooltip-trigger:focus + .score-tooltip { display: block; }
.score-tooltip-trigger:focus-visible { outline: 2px solid var(--coral); outline-offset: 2px; }
tbody tr:last-child > * { border-bottom: 0; }
tbody tr:hover > * { background: #faf8f2; }
.model-name { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; }
.model-dot { display: inline-block; width: 9px; height: 9px; margin-right: 8px; background: var(--model-colour); }
.model-name .model-dot { margin-right: 0; }
.score-value { display: block; color: var(--ink); font: 600 15px/1.2 var(--mono); }
.score-word { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }
.best-score .score-value { color: var(--green); }
.primary-score { background: #f8f5ee; }
.primary-column { color: var(--coral); }
.table-note { max-width: 78ch; margin: 18px 0 0; color: var(--muted); font-size: 12.5px; }

.example-list { display: grid; gap: 18px; }
.example-card { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 1px; border: 1px solid var(--rule); background: var(--rule); }
.example-question, .example-review { padding: 31px; background: var(--white); }
.example-question h3 { margin: 0; font: 400 clamp(22px, 2.7vw, 31px)/1.36 var(--serif); letter-spacing: -.014em; }
.reviewed-model { margin-bottom: 14px; color: var(--green); font: 10px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.example-review > p:not(.reviewed-model):not(.example-score) { color: var(--ink-soft); }
.example-review ul { list-style: none; margin: 22px 0 0; padding: 0; }
.example-review li { display: grid; grid-template-columns: 1fr auto; gap: 18px; padding: 11px 0; border-top: 1px solid var(--rule); color: var(--ink-soft); font-size: 13px; }
.example-review li strong { font: 10px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.finding-strong, .finding-good { color: var(--green); }
.finding-mixed { color: #9a6d15; }
.finding-weak { color: var(--coral); }
.example-score { margin: 20px 0 0; color: var(--muted); font: 11px/1.4 var(--mono); }
.example-score strong { color: var(--ink); font-size: 14px; }

.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 31px; }
.process-step { padding-top: 18px; border-top: 2px solid var(--rule-strong); }
.process-step h3 { margin-bottom: 8px; font: 400 22px/1.18 var(--serif); }
.process-step > p:last-child { margin-bottom: 0; color: var(--ink-soft); font-size: 14px; }

.domain-table { min-width: 760px; }
.domain-table tbody th { padding: 17px 16px; border-bottom: 1px solid var(--rule); font-size: 14px; white-space: nowrap; }
.domain-table td { min-width: 132px; }
.domain-word { display: inline-block; min-width: 63px; padding: 5px 8px; text-align: center; font: 9px/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.domain-number { display: block; margin-top: 5px; color: var(--muted); font: 10px/1 var(--mono); }
.heat-strong { background: #c6ded6; color: var(--green-dark); }
.heat-careful { background: var(--green-soft); color: var(--green-dark); }
.heat-uneven { background: var(--gold-soft); color: #62440e; }
.heat-weak { background: var(--coral-soft); color: #8f3525; }

.updates { padding: 62px 0; background: var(--green); color: var(--white); }
.updates-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(330px, .75fr); gap: 8%; align-items: center; }
.updates .eyebrow { color: #f8d1c8; }
.updates h2 { max-width: 15ch; margin-bottom: 13px; font: 400 clamp(34px, 4vw, 45px)/1.04 var(--serif); letter-spacing: -.025em; }
.updates-grid > div > p:last-child { max-width: 58ch; margin-bottom: 0; color: #cce0da; }
.subscribe-form label { display: block; margin-bottom: 8px; color: #d8e8e3; font: 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.subscribe-row { display: flex; }
.subscribe-row input { min-width: 0; flex: 1; padding: 14px 15px; border: 1px solid var(--white); border-radius: 0; background: var(--white); color: var(--ink); }
.subscribe-row input:focus { outline: 3px solid #efb5a7; outline-offset: 2px; }
.subscribe-row button { padding: 14px 17px; border: 1px solid var(--ink); background: var(--ink); color: var(--white); cursor: pointer; font: 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.subscribe-row button:hover, .subscribe-row button:focus-visible { background: #2e3834; }
.subscribe-row button:disabled { cursor: wait; opacity: .7; }
.privacy, .form-status { margin: 10px 0 0; color: #c9ddd7; font-size: 11px; }
.form-status { min-height: 1.4em; color: var(--white); }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

footer { background: var(--paper-deep); }
.footer-inner { min-height: 92px; display: flex; align-items: center; gap: 28px; color: var(--muted); font: 10px/1.4 var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.footer-inner > span:first-child { margin-right: auto; color: var(--ink); }
.footer-inner div { display: flex; gap: 19px; }
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--ink); }

@media (max-width: 900px) {
  :root { --nav-h: 126px; }
  .nav-inner { flex-wrap: wrap; gap: 0; padding-top: 12px; padding-bottom: 10px; }
  .nav-links { order: 2; width: 100%; flex-wrap: wrap; gap: 13px 18px; padding-top: 10px; }
  .hero-grid, .section-intro, .example-card, .updates-grid { grid-template-columns: 1fr; }
  .hero-note { margin-top: 10px; }
  .finding-grid, .process-grid { grid-template-columns: 1fr; }
  .finding { min-height: 0; }
  .section-intro { gap: 17px; }
}

@media (max-width: 620px) {
  .wrap { padding-left: 20px; padding-right: 20px; }
  .hero-grid { padding-top: 54px; padding-bottom: 48px; }
  h1 { font-size: 45px; }
  .section { padding: 55px 0; }
  .hero-note, .finding, .example-question, .example-review { padding: 23px; }
  .subscribe-row { display: grid; gap: 8px; }
  .subscribe-row button { min-height: 46px; }
  .footer-inner { align-items: flex-start; flex-direction: column; gap: 10px; padding-top: 25px; padding-bottom: 25px; }
  .footer-inner > span:first-child { margin-right: 0; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }