/* Public editorial surface; light/print tokens and the console's validated dark palette. */
:root {
  color-scheme: light;
  --bg: #fff;
  --surface: #f4f6f8;
  --line: #d9dee5;
  --ink: #14181d;
  --ink-2: #4a545f;
  --accent: #58a6ff;
  --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-editorial: Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--font-ui); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 4px; }
button, input { font: inherit; }
button, a, summary, input { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
button { border: 0; }
button:disabled { cursor: wait; opacity: .65; }
button, a, input, summary { transition: background-color 140ms ease, border-color 140ms ease; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
h1, h2, h3, p, dl, dd { margin: 0; }
h1, h2 { font-family: var(--font-editorial); font-weight: 400; }
h1 { font-size: clamp(42px, 4.35vw, 64px); line-height: 1.08; letter-spacing: -.045em; }
h2 { font-size: 36px; line-height: 1.18; letter-spacing: -.028em; }
h3 { font-size: 17px; line-height: 1.4; font-weight: 600; }
em { font-weight: 400; }
.wrap { width: min(1200px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 20px; z-index: 5; padding: 12px; background: var(--bg); }
.skip-link:focus { top: 12px; }
.masthead { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; gap: 20px; text-decoration: none; font: 600 25px/1 var(--font-editorial); letter-spacing: .11em; }
.brand-divider { width: 1px; height: 25px; background: var(--line); }
.brand-context { font: 13px/1.5 var(--font-ui); letter-spacing: 0; color: var(--ink-2); }
nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.nav-example, .nav-product { text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; }
.nav-example:hover, .text-link:hover { text-decoration: underline; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 26px; min-height: 52px; padding: 13px 20px; background: var(--ink); color: var(--bg); font-size: 14px; font-weight: 550; text-decoration: none; border: 1px solid var(--ink); }
.button:hover:not(:disabled) { background: var(--ink-2); border-color: var(--ink-2); }
.button-small { min-height: 44px; padding: 9px 16px; gap: 18px; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; padding-block: 72px; }
.eyebrow { font: 12px/1.6 var(--font-mono); text-transform: uppercase; letter-spacing: .075em; color: var(--ink-2); }
.edition { white-space: nowrap; }
.hero h1 { margin-top: 23px; }
.hero-description { margin-top: 26px; max-width: 460px; color: var(--ink-2); font-size: 18px; line-height: 1.65; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; font-size: 14px; text-decoration: none; }
.hero-note { font-size: 13px; color: var(--ink-2); margin-top: 14px; }
.reading-guide { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 45px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-2); }
.reading-guide b { font: 12px var(--font-mono); margin-right: 6px; }
.specimen { --ink: #e8ecf1; --ink-2: #9aa4b2; --line: #1e2530; --bg: #0d1117; color-scheme: dark; background: var(--bg); color: var(--ink); border: 1px solid var(--line); min-width: 0; scroll-margin-top: 24px; }
.specimen-masthead { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 12px; padding: 14px 24px; border-bottom: 1px solid var(--line); font: 11px/1.5 var(--font-mono); text-transform: uppercase; letter-spacing: .04em; }
.sample-label { color: var(--ink-2); }
.specimen-body { padding: 25px 28px 24px; }
.specimen h2 { margin-top: 10px; font-size: 34px; line-height: 1.13; }
.sample-call { margin-top: 18px; display: flex; align-items: flex-start; gap: 10px; font-size: 13px; line-height: 1.7; }
.chip { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 5px; background: rgba(70,194,142,.16); border: 1px solid rgba(70,194,142,.35); padding: 0 7px; font-size: 12px; }
.chip > span { color: #46c28e; }
.horizon { color: var(--ink-2); white-space: nowrap; }
.sample-measure { display: flex; align-items: center; gap: 24px; margin-block: 18px 22px; }
.sample-measure strong { font-size: 50px; line-height: 1.1; font-weight: 450; letter-spacing: -.045em; font-variant-numeric: tabular-nums; }
.sample-measure strong span { font-size: 27px; color: var(--ink-2); margin-left: 2px; }
.sample-measure p { color: var(--ink-2); font-size: 12px; line-height: 1.55; }
.evidence-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; border-block: 1px solid var(--line); padding-block: 19px; }
.specimen h3 { font-size: 12px; font-weight: 600; }
.evidence-columns p, .falsifier p { color: var(--ink-2); font-size: 13px; line-height: 1.6; margin-top: 6px; }
.falsifier { padding-top: 18px; }
.source-details { border-top: 1px solid var(--line); }
.source-details summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 52px; padding: 12px 28px; color: var(--accent); font-size: 13px; list-style: none; }
.source-details summary::-webkit-details-marker { display: none; }
.source-details summary:hover { background: #131922; }
.source-details[open] .detail-indicator { transform: rotate(45deg); }
.detail-indicator { font-size: 22px; line-height: 1; }
.source-body { padding: 0 28px 24px; font-size: 13px; color: var(--ink-2); }
.source-body dl { margin-top: 14px; }
.source-body dl > div { display: grid; grid-template-columns: 96px minmax(0,1fr); gap: 12px; padding-top: 10px; }
.source-body dt { color: var(--ink); }
.coverage { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.5fr); gap: 80px; border-top: 1px solid var(--line); padding-block: 48px 56px; }
.section-intro h2, .workflow-title h2 { margin-top: 14px; }
.section-intro > p:last-child { margin-top: 18px; color: var(--ink-2); max-width: 360px; font-size: 15px; }
.coverage-rows > div { padding-block: 20px; border-bottom: 1px solid var(--line); }
.coverage-rows > div:first-child { padding-top: 0; }
.coverage-rows dt { font-size: 18px; font-weight: 550; }
.coverage-rows dd { margin: 6px 0 0 36px; font-size: 15px; color: var(--ink-2); }
.row-number { font: 12px var(--font-mono); color: var(--ink-2); display: inline-block; width: 36px; }
.workflow { border-top: 1px solid var(--line); padding-block: 48px 60px; }
.workflow-title { display: flex; align-items: baseline; gap: 60px; }
.workflow-title h2 { margin: 0; font-size: 32px; }
.workflow-title br { display: none; }
.workflow-steps { list-style: none; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 36px; padding: 0; margin: 32px 0 0; }
.workflow-steps li { border-left: 1px solid var(--line); padding-left: 22px; }
.step-number { font: 12px var(--font-mono); color: var(--ink-2); }
.workflow-steps h3 { margin-block: 10px 8px; }
.workflow-steps p { color: var(--ink-2); font-size: 15px; }
.access-section { background: var(--surface); border-block: 1px solid var(--line); padding-block: 58px; }
.access-grid { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,1fr); gap: 100px; align-items: center; }
.access-grid h2 { font-size: 42px; margin-top: 12px; }
.access-grid > div > p:last-child { margin-top: 18px; color: var(--ink-2); max-width: 470px; }
form label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
input { width: 100%; border: 1px solid #77828e; border-radius: 0; background: var(--bg); color: var(--ink); min-height: 52px; padding: 12px 14px; font-size: 16px; }
input::placeholder { color: var(--ink-2); }
input[aria-invalid="true"] { border: 2px solid #9e1b23; }
form .button { width: 100%; justify-content: space-between; margin-top: 12px; }
.form-note { margin-top: 12px; color: var(--ink-2); font-size: 12px; }
.field-error { color: #9e1b23; margin-top: 8px; font-size: 14px; }
.form-status:not(:empty) { font-size: 14px; margin-top: 14px; padding: 12px 14px; border-left: 3px solid var(--ink-2); background: var(--bg); }
.form-status[data-state="error"] { border-color: #9e1b23; }
.form-status[data-state="success"] { border-color: #137a4e; }
.direct-contact { color: var(--ink-2); font-size: 13px; margin-top: 20px; }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 28px; font-size: 12px; color: var(--ink-2); }
.footer-brand { font: 600 16px var(--font-editorial); letter-spacing: .1em; color: var(--ink); }
.footer-brand span { font: 12px var(--font-ui); color: var(--ink-2); letter-spacing: 0; margin-left: 15px; }
.footer-links { display: flex; align-items: center; gap: 24px; }
.footer-links a { min-height: 44px; display: inline-flex; align-items: center; }
@media (max-width: 1100px) {
  .hero { gap: 36px; }
  .brand-context, .brand-divider { display: none; }
  .hero-actions { gap: 10px 16px; }
  .reading-guide { gap: 12px; }
  .coverage, .access-grid { gap: 48px; }
}
@media (max-width: 800px) {
  .wrap { width: calc(100% - 48px); }
  .masthead { min-height: 80px; gap: 16px; }
  .nav-example { display: none; }
  .hero { grid-template-columns: minmax(0,1fr); gap: 36px; padding-block: 44px; }
  .hero-copy { max-width: 620px; }
  h1 { font-size: clamp(42px,7.8vw,60px); }
  .hero h1 { margin-top: 16px; }
  .hero-description { margin-top: 20px; font-size: 17px; }
  .hero-actions { margin-top: 23px; }
  .hero-note { max-width: 350px; }
  .reading-guide { display: none; }
  .specimen { max-width: 620px; width: 100%; }
  .coverage { grid-template-columns: minmax(0,1fr); gap: 28px; padding-block: 36px; }
  .section-intro h2 br { display: none; }
  .section-intro > p:last-child { max-width: 560px; }
  .coverage-rows > div { padding-block: 16px; }
  .workflow { padding-block: 36px; }
  .workflow-title { display: block; }
  .workflow-title h2 { margin-top: 12px; }
  .workflow-steps { grid-template-columns: minmax(0,1fr); gap: 26px; margin-top: 26px; }
  .workflow-steps li { padding-left: 18px; }
  .access-section { padding-block: 36px; }
  .access-grid { grid-template-columns: minmax(0,1fr); gap: 28px; }
  .access-form-column { max-width: 520px; }
  .access-grid h2 { font-size: 36px; }
  .footer { flex-wrap: wrap; gap: 8px 20px; padding-block: 22px; }
  .footer p { order: 3; flex-basis: 100%; }
}
@media (max-width: 480px) {
  .wrap { width: calc(100% - 40px); }
  .wordmark { font-size: 22px; }
  .button-small { font-size: 12px; gap: 12px; padding-inline: 12px; }
  .hero { padding-top: 32px; }
  .hero h1 { font-size: 43px; }
  .eyebrow { font-size: 11px; letter-spacing: .055em; }
  .hero-actions { align-items: flex-start; gap: 8px; flex-direction: column; }
  .hero-note { display: none; }
  .specimen-masthead { padding: 12px 18px; font-size: 10px; }
  .specimen-body { padding: 20px 18px; }
  .specimen h2 { font-size: 31px; }
  .sample-call { gap: 8px; font-size: 12px; }
  .sample-call > span:last-child { max-width: 245px; }
  .sample-measure { gap: 20px; }
  .sample-measure strong { font-size: 47px; }
  .evidence-columns { gap: 18px; }
  .source-details summary { padding-inline: 18px; }
  .source-body { padding-inline: 18px; }
  .source-body dl > div { grid-template-columns: 80px minmax(0,1fr); }
  h2, .workflow-title h2 { font-size: 30px; }
  .coverage-rows dt { font-size: 17px; }
  .access-grid h2 { font-size: 34px; }
}
@media (max-width: 360px) {
  .wrap { width: calc(100% - 32px); }
  .wordmark { font-size: 19px; }
  .button-small { gap: 8px; padding-inline: 9px; }
  .hero h1 { font-size: 37px; }
  .evidence-columns { grid-template-columns: minmax(0,1fr); }
  .specimen-masthead { font-size: 10px; }
  .sample-measure { gap: 14px; }
  .sample-measure strong { font-size: 42px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Product entry uses the public editorial tokens; no client-side auth state. */
.product-entry { border-top: 1px solid var(--line); padding-block: 32px; }
.product-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 24px; padding-block: 24px; }
.product-row + .product-row { border-top: 1px solid var(--line); }
.product-row h2 { font-size: 30px; }
.product-row h2 span { display: inline-block; font: 14px/1.6 var(--font-ui); color: var(--ink-2); margin-left: 12px; }
.product-row p { margin-top: 8px; max-width: 640px; color: var(--ink-2); font-size: 15px; }
.product-entry-actions { display: flex; flex-direction: column; align-items: flex-start; }
.research-entry { max-width: 880px; padding-block: 56px; }
.research-entry h1 { margin-top: 20px; }
.entry-description { margin-top: 24px; max-width: 680px; font-size: 18px; color: var(--ink-2); }
.entry-signin, .entry-scope, .entry-help { margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--line); }
.research-entry h2 { font-size: 30px; }
.entry-signin > p { margin-top: 12px; max-width: 650px; color: var(--ink-2); }
.entry-signin .hero-actions { margin-top: 20px; }
.entry-note { font-size: 14px; color: var(--ink-2); margin-top: 18px; }
.entry-scope dl { margin-top: 24px; }
.entry-scope dd { margin-left: 0; }
.entry-help details { border-bottom: 1px solid var(--line); }
.entry-help h2 { margin-bottom: 16px; }
.entry-help summary { padding-block: 16px; min-height: 56px; font-weight: 550; }
.entry-help details p { padding: 0 0 20px 18px; color: var(--ink-2); }
.research-entry, .product-row { overflow-wrap: anywhere; }
@media (max-width: 800px) {
  .masthead { flex-wrap: wrap; padding-block: 12px; gap: 8px 20px; }
  .masthead nav { gap: 20px; }
  .product-row { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .product-row h2 span { display: block; margin: 6px 0 0; }
  .research-entry { padding-block: 32px; }
  .entry-description { font-size: 17px; }
  .research-entry .hero-actions { align-items: flex-start; flex-direction: column; gap: 8px; }
  .entry-signin, .entry-scope, .entry-help { margin-top: 28px; padding-top: 24px; }
}