:root {
  color-scheme: dark;
  --background: #0a0f1c;
  --text: #fff;
  --muted: #a1a1aa;
  --accent: #00ff66;
  --line: #2b303b;
  --sans: Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-family: var(--sans);
  color: var(--text);
  background: var(--background);
  font-synthesis: none;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-decoration: none; text-underline-offset: 5px; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 7px; }
::selection { color: var(--background); background: var(--accent); }
p, h1, h2, h3 { margin: 0; }
p { line-height: 1.7; }
button, a { -webkit-tap-highlight-color: transparent; }
.page-shell { max-width: 1600px; padding-inline: 5.5%; margin-inline: auto; }
.mono, code { font-family: var(--mono); font-weight: 400; }
.skip-link { position: absolute; z-index: 10; left: 20px; top: -100px; padding: 14px 20px; color: var(--background); background: var(--accent); }
.skip-link:focus { top: 12px; color: var(--background); }
.site-header { min-height: 106px; display: flex; align-items: center; justify-content: space-between; gap: 32px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; font-weight: 700; font-size: 25px; letter-spacing: -1.1px; min-height: 44px; }
.brand-mark { font-family: var(--mono); font-weight: 700; font-size: 25px; letter-spacing: -6px; padding-right: 21px; }
.wordmark-dot { color: var(--muted); }
nav { display: flex; gap: 36px; margin-left: auto; margin-right: 48px; }
nav a, .header-contact { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; }
nav a { color: var(--muted); }
.header-contact { gap: 28px; }
.header-contact span { font-size: 20px; }
.hero { padding-top: 35px; }
.hero-meta { display: flex; justify-content: space-between; font-size: 10px; letter-spacing: 1.2px; color: var(--muted); }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1fr) 265px; align-items: end; gap: 50px; padding-block: 90px 95px; }
h1 { font-size: clamp(68px, 9.55vw, 150px); line-height: .98; font-weight: 700; letter-spacing: -.075em; }
.headline-second { color: var(--muted); }
.headline-period { color: var(--text); }
.hero-context { padding-bottom: 5px; }
.context-index { display: block; font-size: 10px; color: var(--muted); margin-bottom: 24px; }
.hero-description { font-size: 22px; line-height: 1.35; letter-spacing: -.55px; margin-bottom: 16px; }
.hero-context > p:not(.hero-description) { font-size: 13px; color: var(--muted); line-height: 1.8; }
.button { display: inline-flex; min-height: 52px; padding: 15px 22px; align-items: center; justify-content: space-between; gap: 36px; background: var(--accent); color: var(--background); font-size: 13px; font-weight: 700; transition: background-color 160ms ease; }
.button:hover { color: var(--background); background: #b3ffcf; }
.button-arrow { font-size: 21px; line-height: 1; }
.hero-context .button { margin-top: 27px; }
.phase-note { display: block; margin-top: 15px; font-size: 9px; color: var(--muted); }
.hero-bottom { display: flex; align-items: center; justify-content: space-between; gap: 30px; border-block: 1px solid var(--line); padding-block: 26px; }
.coming-next { display: grid; grid-template-columns: 110px auto; column-gap: 24px; row-gap: 8px; align-items: center; }
.teaser-label { color: var(--muted); font-size: 10px; align-self: start; margin-top: 4px; }
.coming-next p { font-size: 14px; color: var(--muted); line-height: 1.4; }
.coming-next strong { color: var(--text); font-weight: 400; }
.coming-next code { grid-column: 2; font-size: 11px; color: var(--muted); line-height: 1.8; }
.section-jump { display: flex; align-items: center; gap: 28px; min-height: 44px; font-size: 10px; white-space: nowrap; }
.section-jump span { font-size: 22px; }
.section { scroll-margin-top: 35px; }
.ecosystem { padding-top: 100px; }
.section-intro { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; margin-bottom: 57px; }
.section-label { font-size: 10px; letter-spacing: 1px; display: flex; gap: 18px; padding-top: 10px; }
.section-label span { color: var(--muted); }
.section-copy { display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: end; }
h2 { font-size: clamp(34px, 3.4vw, 54px); letter-spacing: -.055em; line-height: 1.08; }
.section-copy > p { color: var(--muted); font-size: 13px; line-height: 1.85; }
.ecosystem-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.ecosystem-item { padding: 29px 32px 28px; display: flex; flex-direction: column; }
.ecosystem-item:first-child { padding-left: 0; }
.ecosystem-item:last-child { padding-right: 0; }
.ecosystem-item + .ecosystem-item { border-left: 1px solid var(--line); }
.item-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 36px; color: var(--muted); font-size: 10px; }
.item-meta > span:last-child { font-size: 20px; }
h3 { font-size: 27px; letter-spacing: -.8px; font-weight: 500; margin-bottom: 17px; }
.ecosystem-item > p:not(.item-footnote) { color: var(--muted); font-size: 13px; line-height: 1.9; margin-bottom: 30px; max-width: 340px; }
.ecosystem-item .item-footnote { margin-top: auto; color: var(--muted); font-size: 10px; }
.ecosystem-note { display: flex; gap: 30px; font-size: 11px; color: var(--muted); padding-block: 20px; }
.ecosystem-note > span { flex-shrink: 0; font-size: 9px; padding-top: 2px; }
.partnership { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; padding-block: 110px 112px; }
.partnership-side { display: flex; flex-direction: column; align-items: flex-start; gap: 40px; }
.partner-status { font-size: 11px; line-height: 1.8; color: var(--muted); }
.partnership h2 { font-size: clamp(36px, 4.6vw, 70px); margin-bottom: 28px; }
.partnership h2 span { color: var(--muted); }
.partnership-content > p { max-width: 550px; font-size: 17px; line-height: 1.75; }
.partnership-content .partner-support { margin-top: 14px; font-size: 13px; color: var(--muted); max-width: 480px; }
.partner-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 30px; margin-top: 35px; }
.email-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; color: var(--muted); text-decoration: underline; }
.site-footer { border-top: 1px solid var(--line); min-height: 110px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.footer-wordmark { font-size: 20px; }
.footer-wordmark .brand-mark { font-size: 20px; padding-right: 17px; }
.site-footer p { font-size: 10px; color: var(--muted); }
.footer-email { display: inline-flex; align-items: center; min-height: 44px; font-size: 11px; color: var(--muted); }
.social-link { display: inline-flex; align-items: center; gap: 17px; min-height: 44px; color: var(--muted); font-size: 11px; }
.social-link span { font-size: 19px; }
@media (min-width: 1600px) { .page-shell { padding-inline: 88px; } }
@media (max-width: 1100px) {
  .hero-layout { grid-template-columns: minmax(0, 1fr) 235px; gap: 25px; padding-block: 75px; }
  h1 { font-size: 9.2vw; }
  .section-intro { grid-template-columns: 1fr 2.5fr; }
  .section-copy { gap: 24px; }
  .ecosystem-item { padding-inline: 23px; }
  h3 { font-size: 23px; }
}
@media (max-width: 800px) {
  .site-header { min-height: 88px; gap: 20px; }
  nav { margin-right: 0; gap: 24px; }
  .header-contact { display: none; }
  .hero-layout { grid-template-columns: 1fr; gap: 36px; padding-block: 55px 48px; }
  h1 { font-size: clamp(72px, 14.4vw, 116px); }
  .hero-context { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; align-items: start; }
  .context-index { grid-column: 1; margin-bottom: 18px; }
  .hero-description { grid-column: 1; margin-bottom: 0; }
  .hero-context > p:not(.hero-description) { grid-column: 2; grid-row: 1 / 3; }
  .hero-context .button { grid-column: 1; justify-self: start; }
  .phase-note { grid-column: 1 / -1; }
  .coming-next { grid-template-columns: 1fr; gap: 9px; }
  .coming-next code { grid-column: 1; }
  .section-intro { grid-template-columns: 1fr; gap: 30px; margin-bottom: 40px; }
  .section-copy { gap: 45px; }
  .ecosystem { padding-top: 65px; }
  .ecosystem-item { padding-inline: 18px; }
  .ecosystem-item > p:not(.item-footnote) { font-size: 12px; }
  .item-meta { font-size: 9px; }
  h3 { font-size: 21px; }
  .partnership { grid-template-columns: 1fr; gap: 35px; padding-block: 70px; }
  .partnership-side { flex-direction: row; justify-content: space-between; width: 100%; align-items: center; }
  .partner-status { font-size: 10px; }
  .partnership h2 { font-size: 7vw; }
  .site-footer { flex-wrap: wrap; padding-block: 24px; gap: 12px 24px; }
  .site-footer p { order: 3; flex-basis: 100%; }
  .footer-email { margin-left: auto; }
}
@media (max-width: 540px) {
  .page-shell { padding-inline: 24px; }
  .site-header { min-height: 82px; gap: 12px; }
  .wordmark { font-size: 21px; }
  .brand-mark { font-size: 21px; padding-right: 16px; }
  nav { gap: 17px; }
  nav a { font-size: 11px; }
  .hero { padding-top: 24px; }
  .hero-meta { font-size: 8px; letter-spacing: .6px; gap: 10px; }
  .hero-meta span:last-child { text-align: right; }
  .hero-layout { padding-block: 47px 38px; gap: 36px; }
  h1 { font-size: clamp(54px, 15.2vw, 82px); line-height: 1.02; }
  .hero-context { display: block; }
  .context-index { display: none; }
  .hero-description { font-size: 21px; margin-bottom: 15px; }
  .hero-description br { display: none; }
  .hero-context > p:not(.hero-description) { max-width: 360px; font-size: 14px; }
  .hero-context .button { margin-top: 24px; }
  .phase-note { font-size: 10px; }
  .hero-bottom { display: block; padding-block: 24px 13px; }
  .coming-next p { font-size: 13px; }
  .coming-next code { font-size: 10px; }
  .coming-next code span { display: block; }
  .section-jump { margin-top: 17px; justify-content: space-between; }
  .section-copy { display: block; }
  h2 { font-size: 41px; }
  .section-copy > p { margin-top: 24px; font-size: 14px; }
  .ecosystem-grid { grid-template-columns: 1fr; }
  .ecosystem-item, .ecosystem-item:first-child, .ecosystem-item:last-child { padding: 25px 0 28px; }
  .ecosystem-item + .ecosystem-item { border-left: 0; border-top: 1px solid var(--line); }
  .item-meta { margin-bottom: 23px; font-size: 10px; }
  h3 { font-size: 28px; }
  .ecosystem-item > p:not(.item-footnote) { font-size: 14px; margin-bottom: 22px; max-width: none; }
  .item-footnote { font-size: 11px; }
  .ecosystem-note { display: block; font-size: 12px; }
  .ecosystem-note > span { display: block; margin-bottom: 8px; }
  .partnership { padding-block: 54px 64px; gap: 30px; }
  .partnership-side { align-items: flex-start; gap: 15px; }
  .section-label { font-size: 9px; gap: 12px; }
  .partner-status { font-size: 8px; }
  .partnership h2 { font-size: clamp(30px, 8.1vw, 44px); margin-bottom: 24px; }
  .partnership-content > p { font-size: 16px; }
  .partner-actions { gap: 12px 24px; }
  .site-footer { gap: 12px; }
  .footer-wordmark { font-size: 18px; }
  .footer-wordmark .brand-mark { font-size: 18px; }
  .social-link { font-size: 10px; gap: 10px; }
  .footer-email { order: 2; flex-basis: 100%; margin-left: 0; }
}
@media (max-width: 360px) {
  .page-shell { padding-inline: 18px; }
  nav { gap: 12px; }
  .wordmark { font-size: 19px; }
  .brand-mark { font-size: 19px; padding-right: 13px; }
  h1 { font-size: 15vw; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* Researcher handbook shares the landing page's typography and borders. */
.error-page .page-shell { min-height: 100svh; display: flex; flex-direction: column; }
.error-main { flex: 1; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 65px; padding-block: 100px; }
.error-code { font-size: clamp(100px, 19vw, 280px); font-weight: 700; line-height: 1; letter-spacing: -.085em; }
.error-code > span { color: var(--muted); }
.error-code .error-period { color: var(--text); }
.error-content h1 { font-size: clamp(32px, 3.5vw, 55px); letter-spacing: -.05em; line-height: 1.1; margin-block: 22px; }
.error-content > p:not(.guide-kicker) { font-size: 15px; color: var(--muted); max-width: 420px; }
.error-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 24px; margin-top: 30px; }
.researcher-entry { display: flex; justify-content: space-between; align-items: center; gap: 45px; margin-top: 28px; padding-block: 35px; border-bottom: 1px solid var(--line); }
.researcher-entry .mono { font-size: 10px; margin-bottom: 16px; color: var(--muted); }
.researcher-entry h3 { font-size: 27px; line-height: 1.3; }
.researcher-entry p:last-child { color: var(--muted); max-width: 570px; font-size: 13px; }
.guide-link { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; font-size: 13px; text-decoration: underline; }
.researcher-entry > a { flex-shrink: 0; }
nav a[aria-current="page"] { color: var(--text); text-decoration: underline; }
.guide-hero { padding-block: 65px 60px; border-bottom: 1px solid var(--line); }
.guide-kicker, .guide-number { color: var(--muted); font-size: 11px; letter-spacing: .5px; }
.guide-hero h1 { font-size: clamp(42px, 6.6vw, 100px); line-height: 1.08; letter-spacing: -.06em; margin-block: 32px; }
.guide-hero h1 span { color: var(--muted); }
.guide-deck { max-width: 640px; font-size: 18px; color: var(--muted); }
.guide-meta { display: flex; flex-wrap: wrap; gap: 15px 34px; font-size: 11px; margin-block: 32px; }
.guide-notice { max-width: 860px; padding: 24px; border: 1px solid var(--line); }
.guide-notice strong { font-size: 14px; }
.guide-notice p { font-size: 14px; color: var(--muted); margin-top: 9px; }
.guide-layout { display: grid; grid-template-columns: 260px minmax(0, 760px); justify-content: space-between; gap: 65px; padding-block: 60px 80px; }
.guide-sidebar { min-width: 0; }
.guide-toc { display: flex; flex-direction: column; position: sticky; top: 25px; gap: 0; margin: 0; max-height: calc(100dvh - 50px); overflow-y: auto; padding: 8px; }
.guide-toc p { font-size: 10px; color: var(--muted); margin-bottom: 18px; }
.guide-toc a { min-height: 40px; font-size: 12px; gap: 13px; }
.guide-toc a span { font-family: var(--mono); font-size: 10px; }
.guide-content { min-width: 0; }
.guide-section { scroll-margin-top: 30px; padding-block: 45px; border-bottom: 1px solid var(--line); }
.guide-section:first-child { padding-top: 0; }
.guide-section:last-child { border-bottom: 0; padding-bottom: 0; }
.guide-section h2 { font-size: clamp(28px, 2.6vw, 40px); line-height: 1.18; margin-block: 16px 24px; letter-spacing: -.035em; }
.guide-section h3 { font-size: 20px; font-weight: 600; line-height: 1.35; margin-block: 24px 12px; letter-spacing: -.4px; }
.guide-section p, .guide-section li, .guide-section dd { color: var(--muted); font-size: 15px; line-height: 1.85; }
.guide-section p + p { margin-top: 18px; }
.guide-section strong { color: var(--text); font-weight: 600; }
.guide-section ul, .guide-section ol { padding-left: 22px; margin-block: 20px; }
.guide-section li { padding-left: 5px; margin-block: 12px; }
.guide-section li::marker { color: var(--muted); }
.guide-section .guide-number { font-size: 10px; }
.guide-callout { background: #111725; padding: 24px; margin-top: 26px; }
.guide-callout h3 { margin-top: 0; }
.guide-callout .guide-link { margin-top: 15px; overflow-wrap: anywhere; }
.status-list { margin-block: 25px; }
.status-list > div { display: grid; grid-template-columns: 175px minmax(0, 1fr); gap: 20px; padding-block: 17px; border-bottom: 1px solid var(--line); }
.status-list dt { font-size: 14px; line-height: 1.7; font-weight: 600; }
.status-list dd { margin: 0; font-size: 14px; }
.guide-section .submission-checklist { list-style-type: square; }
.guide-references a { color: var(--text); text-decoration: underline; overflow-wrap: anywhere; }
.guide-references a:hover { color: var(--accent); }
.guide-references li span { display: block; font-size: 13px; margin-top: 3px; }
.guide-references .reference-date { font-size: 12px; margin-block: 24px; }
@media (max-width: 1100px) {
  .guide-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 35px; }
}
@media (max-width: 800px) {
  .guide-layout { display: block; padding-top: 30px; }
  .error-main { grid-template-columns: 1fr; gap: 35px; padding-block: 55px; }
  .error-code { font-size: clamp(120px, 30vw, 230px); }
  .guide-toc { position: static; display: grid; grid-template-columns: 1fr 1fr; column-gap: 20px; max-height: none; overflow: visible; padding: 0; }
  .guide-toc p { grid-column: 1 / -1; }
  .guide-toc a { min-height: 44px; }
  .guide-sidebar { padding-bottom: 28px; margin-bottom: 35px; border-bottom: 1px solid var(--line); }
  .researcher-entry { align-items: flex-start; flex-direction: column; gap: 16px; }
}
@media (max-width: 540px) {
  .site-header { flex-wrap: wrap; padding-block: 14px 8px; gap: 4px; }
  .site-header > nav { width: 100%; justify-content: space-between; gap: 15px; margin: 0; }
  .site-header > nav a { font-size: 12px; }
  .guide-hero { padding-block: 38px; }
  .guide-hero h1 { font-size: clamp(31px, 8.1vw, 44px); margin-block: 24px; }
  .guide-deck { font-size: 16px; }
  .guide-meta { font-size: 9px; gap: 13px; margin-block: 24px; }
  .guide-notice { padding: 18px; }
  .guide-layout { padding-bottom: 50px; }
  .guide-toc { column-gap: 12px; }
  .guide-toc a { font-size: 11px; gap: 8px; }
  .guide-section { padding-block: 34px; }
  .guide-section h2 { font-size: 29px; }
  .guide-callout { padding: 18px; }
  .status-list > div { grid-template-columns: 1fr; gap: 7px; }
  .researcher-entry { margin-top: 15px; padding-block: 25px; }
  .researcher-entry h3 { font-size: 24px; }
}