/* matthewdhanson.com — "Seville Noon"
   Colors are tokens; dark mode redefines them below. */

/* anchorlab.science: "Fixed Point", a sibling of matthewdhanson.com's "Seville Noon".
   Token names match the personal site; --terra and --olive alias the lab's signal and kelp. */

:root {
  color-scheme: light dark;
  --paper: #F3F5F4;
  --surface: #FCFDFC;
  --ink: #0E1B2A;
  --ink-2: #4A5766;
  --accent: #13466E;
  --accent-ink: #0C3352;
  --signal: #B0461C;
  --kelp: #2F6450;
  --terra: var(--signal);
  --olive: var(--kelp);
  --rule: #DCE2E3;
  --rule-ui: #7A8892;
  --tint: #E4EDF1;
  --on-accent: #FCFDFC;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --step--1: .8125rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.75rem;
  --step-3: clamp(2.25rem, 1.5rem + 2.8vw, 3.6rem);

  --wrap: 72rem;
  --prose: 42rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --section: clamp(4rem, 3rem + 4vw, 7rem);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0A1520; --surface: #11202E; --ink: #E7ECEE; --ink-2: #A2B0BB;
    --accent: #7DB6DA; --accent-ink: #A8D0EA; --signal: #F08F5E; --kelp: #86C5AA;
    --rule: #1F3243; --rule-ui: #5B7184; --tint: #132A3B; --on-accent: #0A1520;
  }
}
:root[data-theme="dark"] {
  --paper: #0A1520; --surface: #11202E; --ink: #E7ECEE; --ink-2: #A2B0BB;
  --accent: #7DB6DA; --accent-ink: #A8D0EA; --signal: #F08F5E; --kelp: #86C5AA;
  --rule: #1F3243; --rule-ui: #5B7184; --tint: #132A3B; --on-accent: #0A1520;
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -.01em;
  text-wrap: balance;
}
h1 { font-size: var(--step-3); line-height: 1.06; letter-spacing: -.02em; }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); line-height: 1.35; }
p { text-wrap: pretty; }
p + p { margin-top: 1em; }
em, cite { font-style: italic; }
cite { font-family: var(--serif); font-size: 1.05em; }
strong { font-weight: 600; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.prose { max-width: var(--prose); }
.muted { color: var(--ink-2); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.eyebrow {
  font: 600 var(--step--1)/1.3 var(--sans);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--terra);
}

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 200;
  background: var(--accent); color: var(--on-accent);
  padding: .6rem 1rem; border-radius: 3px; text-decoration: none; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--paper);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 4rem; gap: 1rem;
}
.wordmark {
  font: 500 1.25rem/1 var(--serif);
  color: var(--ink); text-decoration: none; letter-spacing: -.01em;
  white-space: nowrap;
}
.wordmark .phd { font-variant: small-caps; font-size: .9em; color: var(--ink-2); letter-spacing: .02em; }
.wordmark:hover { color: var(--ink); }

.site-nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .25rem 1.5rem; }
.site-nav a {
  display: block; color: var(--ink); text-decoration: none;
  font: 500 .9375rem/1 var(--sans); padding: .85rem 0;
}
.site-nav a:hover { color: var(--accent); }
.site-nav a[aria-current="page"] { color: var(--accent); }
.nav-toggle {
  display: none; align-items: center; justify-content: center;
  min-width: 44px; min-height: 44px; padding: 0 .9rem; cursor: pointer;
  font: 600 var(--step--1)/1 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  background: transparent; color: var(--ink);
  border: 1px solid var(--rule-ui); border-radius: 3px;
}

@media (max-width: 759px) {
  /* Without JS the links simply wrap under the name. */
  .site-header .wrap { flex-wrap: wrap; }
  .js .nav-toggle { display: inline-flex; }
  .js .site-nav { display: none; flex-basis: 100%; }
  .js .site-nav.open { display: block; }
  .site-nav { flex-basis: 100%; }
  .js .site-nav ul { flex-direction: column; gap: 0; padding-bottom: .75rem; }
  .js .site-nav li + li { border-top: 1px solid var(--rule); }
}
@media (min-width: 760px) {
  .site-nav ul { gap: 2rem; }
  .site-nav a { padding: .5rem 0; position: relative; }
  .site-nav a[aria-current="page"]::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -.15rem;
    height: 2px; background: var(--terra);
  }
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font: 600 .9375rem/1 var(--sans);
  padding: .85rem 1.25rem; border-radius: 3px;
  text-decoration: none; border: 1px solid var(--accent);
  transition: background-color .18s ease-out, color .18s ease-out;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: var(--on-accent); }
.btn-secondary { color: var(--accent); background: transparent; }
.btn-secondary:hover { background: var(--tint); }
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; }
.btn .meta { font-weight: 400; opacity: .8; }

/* ── Sections ── */
.section { padding-block: var(--section); }
.section + .section { border-top: 1px solid var(--rule); }
.section-grid {
  display: grid; gap: 1.5rem 3rem;
}
@media (min-width: 900px) {
  .section-grid { grid-template-columns: 14rem 1fr; }
  .section-label { position: sticky; top: 6rem; align-self: start; }
}
.section-label h2 { margin-top: .5rem; }
.section-label p { color: var(--ink-2); font-size: .9375rem; margin-top: .75rem; }

/* ── Hero ── */
.hero { padding-block: clamp(3rem, 2rem + 5vw, 6.5rem) var(--section); }
.hero .wrap {
  display: grid; gap: 3rem; align-items: center;
}
@media (min-width: 860px) {
  .hero .wrap { grid-template-columns: minmax(0, 7fr) minmax(0, 4.2fr); gap: 4.5rem; }
}
.hero h1 { margin-top: 1rem; max-width: 18ch; }
.hero .lede { margin-top: 1.5rem; font-size: 1.1875rem; color: var(--ink-2); max-width: 36rem; }
.hero .btn-row { margin-top: 2rem; }

.portrait { position: relative; max-width: 25rem; margin-inline: auto; width: 100%; }
.portrait::before {
  content: ""; position: absolute; inset: 0;
  transform: translate(14px, 14px);
  background: var(--terra); opacity: .88; border-radius: 2px;
}
.portrait img {
  position: relative; width: 100%; aspect-ratio: 4 / 5; object-fit: cover;
  object-position: 50% 35%; border-radius: 2px;
}
@media (max-width: 859px) { .portrait { max-width: 18rem; margin-inline: 0; } }

/* Facts strip */
.facts {
  list-style: none; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr)); gap: 0 2rem;
  border-bottom: 1px solid var(--rule);
}
.facts li { padding: 1.25rem 0; border-top: 1px solid var(--rule); }
.facts .k { display: block; font: 500 1.3125rem/1.2 var(--serif); color: var(--ink); }
.facts .v { display: block; font-size: .875rem; color: var(--ink-2); margin-top: .25rem; }

/* ── Themes ── */
.themes { display: grid; gap: 2.5rem 3rem; }
@media (min-width: 700px) { .themes { grid-template-columns: 1fr 1fr; } }
.theme { border-top: 2px solid var(--terra); padding-top: 1.25rem; }
.theme .num { font: italic 400 1.125rem/1 var(--serif); color: var(--terra); }
.theme h3 { margin-top: .6rem; font-size: 1.375rem; }
.theme .q { font-family: var(--serif); font-style: italic; color: var(--ink); margin-top: .6rem; font-size: 1.0625rem; }
.theme p:not(.q) { margin-top: .6rem; color: var(--ink-2); }
.theme .more { display: inline-block; margin-top: .9rem; font-weight: 500; font-size: .9375rem; }

/* Research page: full theme essays */
.theme-detail + .theme-detail { margin-top: 4rem; padding-top: 4rem; border-top: 1px solid var(--rule); }
.theme-detail .num { font: italic 400 1.25rem/1 var(--serif); color: var(--terra); }
.theme-detail h2 { margin-top: .5rem; }
.theme-detail .q { font: italic 400 1.25rem/1.45 var(--serif); margin-top: 1rem; }
.theme-detail .body { margin-top: 1.25rem; }
.takeaway {
  margin-top: 1.75rem; padding: 1.25rem 1.5rem;
  background: var(--tint); border-left: 3px solid var(--accent); border-radius: 0 3px 3px 0;
}
.takeaway .eyebrow { color: var(--accent); }
.takeaway p { margin-top: .4rem; }
.key-work { margin-top: 1.5rem; }
.key-work h3 { font: 600 var(--step--1)/1.3 var(--sans); text-transform: uppercase; letter-spacing: .09em; color: var(--ink-2); }
.key-work ul { margin-top: .6rem; padding-left: 1.1rem; }
.key-work li + li { margin-top: .4rem; }

/* ── Cards (projects) ── */
.cards { display: grid; gap: 1.25rem; }
@media (min-width: 700px) { .cards { grid-template-columns: 1fr 1fr; } }
.card {
  position: relative;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 4px;
  padding: 1.5rem;
  transition: border-color .18s ease-out, transform .18s ease-out;
}
.card .status {
  font: 600 .75rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--olive);
}
.card .status.done { color: var(--ink-2); }
.card h3 { margin-top: .6rem; }
.card p { margin-top: .5rem; color: var(--ink-2); font-size: 1rem; }
.card .meta { margin-top: .9rem; font-size: .875rem; color: var(--ink-2); }
.card a.stretch::after { content: ""; position: absolute; inset: 0; }
.card a.stretch { text-decoration: none; color: inherit; }
.card:has(a.stretch):hover { border-color: var(--accent); }
@media (prefers-reduced-motion: no-preference) {
  .card:has(a.stretch):hover { transform: translateY(-2px); }
}
.card .go { color: var(--accent); font-weight: 500; font-size: .9375rem; margin-top: .9rem; display: inline-block; }

/* ── Publications ── */
.pub-list { list-style: none; padding: 0; }
.pub {
  display: grid; grid-template-columns: 4rem 1fr; gap: 0 1rem;
  padding-block: 1.25rem; border-top: 1px solid var(--rule);
}
.pub:last-child { border-bottom: 1px solid var(--rule); }
.pub .year {
  font: 500 1rem/1.6 var(--sans); color: var(--terra);
  font-variant-numeric: tabular-nums;
}
.pub .title { font: 500 1.1875rem/1.35 var(--serif); color: var(--ink); }
.pub .title a { color: inherit; text-decoration-color: var(--rule-ui); }
.pub .title a:hover { color: var(--accent); text-decoration-color: currentColor; }
.pub .authors { color: var(--ink-2); font-size: .9375rem; margin-top: .3rem; }
.pub .authors strong { color: var(--ink); font-weight: 600; }
.pub .venue { font-size: .9375rem; margin-top: .15rem; color: var(--ink-2); }
.pub .venue cite { color: var(--ink); }
.pub .links { margin-top: .4rem; font-size: .8125rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; display: flex; gap: 1rem; }
.pill {
  display: inline-block; font: 600 .6875rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase;
  color: var(--olive); border: 1px solid currentColor; border-radius: 2px; padding: .3rem .45rem; margin-left: .35rem;
  vertical-align: .12em;
}
@media (max-width: 520px) {
  .pub { grid-template-columns: 1fr; }
}

.pub-group + .pub-group { margin-top: 3.5rem; }
.pub-group > h2 { font-size: 1.5rem; margin-bottom: 1rem; display: flex; align-items: baseline; gap: .6rem; }
.pub-group > h2 .count { font: 500 .9375rem/1 var(--sans); color: var(--ink-2); }

.filter { border: 0; padding: 0; margin: 0 0 2.5rem; }
.filter legend { font: 600 var(--step--1)/1.3 var(--sans); letter-spacing: .09em; text-transform: uppercase; color: var(--ink-2); margin-bottom: .75rem; }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip > span {
  display: inline-flex; align-items: center; gap: .4rem; min-height: 44px;
  padding: 0 1rem; border: 1px solid var(--rule-ui); border-radius: 999px;
  font: 500 .9375rem/1 var(--sans); cursor: pointer; color: var(--ink);
  transition: background-color .15s ease-out, border-color .15s ease-out;
}
.chip span .n { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.chip input:checked + span { background: var(--tint); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.chip input:checked + span::before { content: "\2713"; font-size: .875em; }
.chip input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.filter-status { font-size: .875rem; color: var(--ink-2); margin-top: .75rem; }

details.more-pubs { margin-top: 1rem; }
details.more-pubs > summary {
  cursor: pointer; font-weight: 600; color: var(--accent); padding-block: .75rem; min-height: 44px;
}

/* ── CV ── */
.cv-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 1.5rem; }
.timeline { list-style: none; padding: 0 0 0 1.5rem; position: relative; }
.timeline::before { content: ""; position: absolute; left: 4px; top: .5rem; bottom: .5rem; width: 1px; background: var(--rule-ui); opacity: .6; }
.timeline > li { position: relative; }
.timeline > li + li { margin-top: 2rem; }
.timeline > li::before {
  content: ""; position: absolute; left: calc(-1.5rem + 0px); top: .45rem;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--accent);
}
.when { font-size: .8125rem; color: var(--ink-2); font-variant-numeric: tabular-nums; letter-spacing: .02em; }
.timeline h3 { margin-top: .2rem; font-size: 1.1875rem; }
.timeline .org { color: var(--ink-2); font-size: .9375rem; }
.timeline p { margin-top: .5rem; font-size: 1rem; }

.cv-block + .cv-block { margin-top: 3.5rem; }
.cv-block > h2 { font-size: 1.5rem; margin-bottom: 1.25rem; }
.plain-list { list-style: none; padding: 0; }
.plain-list li { padding-block: .7rem; border-top: 1px solid var(--rule); }
.plain-list li:last-child { border-bottom: 1px solid var(--rule); }
.plain-list .when { display: inline-block; min-width: 7.5rem; }
.grant .amt { font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 600; }

/* ── Ventures / Contact ── */
.venture {
  display: grid; gap: 1rem 2.5rem; align-items: start;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 4px;
  padding: clamp(1.5rem, 1rem + 2vw, 2.5rem);
}
@media (min-width: 760px) { .venture { grid-template-columns: 1fr auto; align-items: center; } }
.venture p { color: var(--ink-2); margin-top: .6rem; }
.venture .fine { font-size: .875rem; margin-top: 1rem; }

.contact-band { background: var(--tint); padding-block: var(--section); }
.contact-band .wrap { display: grid; gap: 2rem 4rem; }
@media (min-width: 860px) { .contact-band .wrap { grid-template-columns: 1.1fr 1fr; align-items: start; } }
.contact-band h2 { font-size: clamp(2rem, 1.5rem + 1.6vw, 2.75rem); }
.contact-band .lead { margin-top: 1rem; color: var(--ink-2); max-width: 32rem; }
.contact-list { display: grid; gap: 1.25rem; }
.contact-list dt { font: 600 var(--step--1)/1.3 var(--sans); letter-spacing: .09em; text-transform: uppercase; color: var(--ink-2); }
.contact-list dd { margin-top: .25rem; }
.contact-list .big { font: 500 1.375rem/1.3 var(--serif); overflow-wrap: anywhere; }

/* ── Footer ── */
.site-footer { padding-block: 2.5rem 3rem; border-top: 1px solid var(--rule); font-size: .875rem; color: var(--ink-2); }
.site-footer .wrap { display: grid; gap: 1rem; }
@media (min-width: 760px) { .site-footer .wrap { grid-template-columns: 1fr auto; align-items: start; } }
.site-footer ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 1.25rem; }
.site-footer a { color: var(--ink-2); }
.site-footer a:hover { color: var(--accent); }
.disclaimer { max-width: 44rem; }

/* ── Page intro (subpages) ── */
.page-intro { padding-block: clamp(3rem, 2rem + 4vw, 5.5rem) 2.5rem; }
.page-intro h1 { margin-top: .75rem; max-width: 20ch; }
.page-intro .lede { margin-top: 1.25rem; font-size: 1.1875rem; color: var(--ink-2); max-width: 40rem; }

.pt-1 { padding-top: 1rem; }
.pt-15 { padding-top: 1.5rem; }
.pt-2 { padding-top: 2rem; }
.contact-band h2 { margin-top: .6rem; }

/* ── Motion ── */
@media (prefers-reduced-motion: no-preference) {
  .rise { animation: rise .6s cubic-bezier(.2, .7, .2, 1) both; }
  .rise-2 { animation-delay: .06s; }
  .rise-3 { animation-delay: .12s; }
  .rise-4 { animation-delay: .18s; }
  @keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
}

/* ── Print (CV) ── */
@media print {
  :root { --paper: #fff; --surface: #fff; --ink: #000; --ink-2: #333; --accent: #000; --tint: #fff; }
  .site-header, .site-footer, .btn-row, .skip-link, .filter, .no-print { display: none !important; }
  body { font-size: 11pt; }
  .section { padding-block: 1rem; }
  a { color: inherit; text-decoration: none; }
  .timeline > li, .pub, .plain-list li { break-inside: avoid; }
  details::details-content { content-visibility: visible; }
}

/* Research page: sticky table of contents beside the essays */
.research-layout { display: grid; gap: 2.5rem; }
.toc ol { list-style: none; padding: 0; margin-top: .75rem; }
.toc li + li { border-top: 1px solid var(--rule); }
.toc a { display: flex; gap: .75rem; padding: .6rem 0; color: var(--ink); text-decoration: none; font-size: .9375rem; }
.toc a span { font: italic 400 1rem/1.4 var(--serif); color: var(--terra); min-width: 1.5rem; }
.toc a:hover { color: var(--accent); }
@media (max-width: 999px) { .toc { display: none; } }
@media (min-width: 1000px) {
  .research-layout { grid-template-columns: minmax(0, var(--prose)) 15rem; justify-content: space-between; }
  .research-layout .toc { order: 2; position: sticky; top: 6rem; align-self: start; }
}

/* ── URI section (home) and agenda (research) ── */
.uri-grid { display: grid; gap: 1.25rem; margin-top: 1.75rem; }
@media (min-width: 760px) { .uri-grid { grid-template-columns: repeat(3, 1fr); } }
.uri-item { border-top: 2px solid var(--accent); padding-top: 1rem; }
.uri-item h3 { font-size: 1.1875rem; }
.uri-item p { color: var(--ink-2); margin-top: .5rem; font-size: 1rem; }
.uri-item .more { display: inline-block; margin-top: .75rem; font-weight: 500; font-size: .9375rem; }
.uri-note { margin-top: 1.25rem; padding-left: 1rem; border-left: 2px solid var(--accent); color: var(--ink); font-size: 1rem; }
.uri-note .eyebrow { color: var(--accent); margin-right: .4rem; }
.uri-agenda { margin-top: 4rem; padding: 2rem; background: var(--tint); border-radius: 4px; }
.uri-agenda h2 { margin: .5rem 0 1rem; }
.uri-agenda .eyebrow { color: var(--accent); }
.agenda { margin: 1rem 0; padding-left: 1.25rem; }
.agenda li + li { margin-top: .6rem; }
.agenda li::marker { font-family: var(--serif); color: var(--accent); }
@media (min-width: 760px) { .uri-grid { grid-template-columns: repeat(2, 1fr); } }
.lab { margin: 1.5rem 0; padding: 1.25rem 1.25rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; }
.lab h3 { font-size: 1.25rem; }
.lab p { margin-top: .6rem; font-size: 1rem; }

/* ── ANCHOR Lab application form ── */
.lab-form { margin-top: 1.5rem; display: grid; gap: 1.25rem; }
.lab-form .hp { position: absolute; left: -9999px; }
.field-row { display: grid; gap: 1.25rem; }
@media (min-width: 640px) { .field-row { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: .4rem; border: 0; padding: 0; margin: 0; min-width: 0; }
.field > label, .field > legend { font-weight: 600; font-size: .9375rem; color: var(--ink); padding: 0; }
.field .req { font: 500 .75rem/1 var(--sans); color: var(--ink-2); text-transform: uppercase; letter-spacing: .06em; margin-left: .35rem; }
.field .hint, .lab-form .hint { font-size: .875rem; color: var(--ink-2); font-weight: 400; }
.lab-form input[type=text], .lab-form input[type=email], .lab-form select, .lab-form textarea {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--rule-ui); border-radius: 3px; padding: .65rem .75rem; min-height: 44px; width: 100%;
}
.lab-form textarea { resize: vertical; }
.lab-form input:focus-visible, .lab-form select:focus-visible, .lab-form textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.lab-form input:user-invalid, .lab-form select:user-invalid, .lab-form textarea:user-invalid { border-color: var(--terra); }
.opts { display: grid; gap: .5rem; margin-top: .25rem; }
@media (min-width: 640px) { .opts { grid-template-columns: 1fr 1fr; } }
.opt { display: flex; gap: .6rem; align-items: flex-start; font-size: 1rem; cursor: pointer; }
.opt input { width: 1.1rem; height: 1.1rem; margin-top: .25rem; accent-color: var(--accent); flex: none; }
.consent { font-size: .9375rem; color: var(--ink-2); }
.lab-form button { justify-self: start; cursor: pointer; font-family: var(--sans); }
.field-row .opts { grid-template-columns: 1fr; }


/* ── Lab additions ── */
.wordmark { display: inline-flex; align-items: center; gap: .55rem; }
.wordmark svg { width: 28px; height: 28px; flex: none; color: var(--accent); }
.wordmark i { font-style: italic; color: var(--ink-2); }
.mk-datum { stroke: var(--signal); fill: var(--signal); }
.expansion { font: 500 .875rem/1.4 var(--sans); color: var(--ink-2); margin-top: .35rem; max-width: 48ch; }
.expansion abbr { text-decoration: none; font-weight: 600; color: var(--ink); }
.site-nav .nav-cta { background: var(--accent); color: var(--on-accent); padding: .55rem 1rem; border-radius: 3px; font-weight: 600; }
.site-nav .nav-cta:hover { background: var(--accent-ink); color: var(--on-accent); }
.site-nav .nav-cta::after { display: none; }
@media (max-width: 759px) { .site-nav .nav-cta { display: inline-block; margin-top: .5rem; } }

.lab-hero { background: var(--tint); padding-block: clamp(3.5rem, 2rem + 6vw, 7rem); border-bottom: 1px solid var(--rule); }
.datum { display: block; width: 4rem; height: 2px; background: var(--signal); margin-bottom: 1.1rem; }
.lab-hero h1 { max-width: 20ch; margin-top: .9rem; }
.lab-hero .lede { margin-top: 1.25rem; font-size: 1.1875rem; color: var(--ink-2); max-width: 40rem; }
.lab-hero .btn-row { margin-top: 2rem; }

.areas { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.area { background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 1.5rem; transition: border-color .18s ease-out; }
.area:hover { border-color: var(--rule-ui); }
.area .num { font: 600 var(--step--1)/1 var(--sans); letter-spacing: .09em; color: var(--signal); }
.area h3 { margin-top: .6rem; }
.area p { margin-top: .5rem; color: var(--ink-2); font-size: 1rem; }
.area .q { font-family: var(--serif); font-style: italic; color: var(--ink); }
.area .more { display: inline-block; margin-top: .9rem; font-weight: 500; font-size: .9375rem; }

.project-grid { display: grid; gap: 1.25rem; }
@media (min-width: 760px) { .project-grid { grid-template-columns: 1fr 1fr; } }
.project { background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 1.5rem; }
.project h3 { font-size: 1.1875rem; margin-top: .7rem; }
.project p { margin-top: .5rem; color: var(--ink-2); font-size: 1rem; }
.project .meta { margin-top: .8rem; font-size: .875rem; color: var(--ink-2); }
.project .go { display: inline-block; margin-top: .8rem; font-weight: 500; font-size: .9375rem; }
.status { display: inline-block; font: 600 .6875rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase;
  border: 1px solid currentColor; border-radius: 2px; padding: .32rem .5rem; }
.status.active { color: var(--kelp); } .status.recruiting { color: var(--signal); }
.status.review { color: var(--accent); } .status.dev, .status.done { color: var(--ink-2); }

.split-cta { display: grid; gap: 1.25rem; }
@media (min-width: 760px) { .split-cta { grid-template-columns: 1fr 1fr; } }
.split-cta > div { background: var(--surface); border: 1px solid var(--rule); border-top: 3px solid var(--accent); border-radius: 0 0 4px 4px; padding: 1.75rem; }
.split-cta > div.partner { border-top-color: var(--signal); }
.split-cta p { margin-top: .6rem; color: var(--ink-2); }
.split-cta .btn { margin-top: 1.25rem; }

ul.skills { padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); margin-top: 1.5rem; }
.skills li { list-style: none; border-top: 2px solid var(--signal); padding-top: .8rem; }
.skills strong { display: block; font-family: var(--serif); font-weight: 500; font-size: 1.125rem; }
.skills span { color: var(--ink-2); font-size: .9375rem; }

.roadmap { list-style: none; padding: 0; margin-top: 1.25rem; }
.roadmap li { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; padding-block: .85rem; border-top: 1px solid var(--rule); }
.roadmap li:last-child { border-bottom: 1px solid var(--rule); }
.roadmap .wk { font: 600 .8125rem/1.6 var(--sans); color: var(--signal); letter-spacing: .04em; }

.person { display: grid; gap: 1.5rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 1.75rem; }
@media (min-width: 700px) { .person { grid-template-columns: 11rem 1fr; } }
.person img { width: 100%; aspect-ratio: 4/5; object-fit: cover; border-radius: 3px; }
.person h3 { font-size: 1.5rem; }
.person .role { color: var(--signal); font: 600 var(--step--1)/1.3 var(--sans); letter-spacing: .08em; text-transform: uppercase; margin-top: .3rem; }
.person p { margin-top: .75rem; }
.cohort { margin-top: 1.25rem; border: 1px dashed var(--rule-ui); border-radius: 4px; padding: 1.75rem; }
.cohort p { margin-top: .5rem; color: var(--ink-2); }
.cohort .btn { margin-top: 1rem; }

.faq details { border-top: 1px solid var(--rule); padding-block: .9rem; }
.faq details:last-child { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; font-weight: 600; min-height: 44px; display: flex; align-items: center; }
.faq details p { margin-top: .4rem; color: var(--ink-2); }

.steps { list-style: none; padding: 0; counter-reset: st; display: grid; gap: 1rem; margin-top: 1.25rem; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.steps li { counter-increment: st; background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 1.25rem; }
.steps li::before { content: "0" counter(st); display: block; font: 600 var(--step--1)/1 var(--sans); color: var(--signal); letter-spacing: .09em; margin-bottom: .6rem; }
.privacy { font-size: .875rem; color: var(--ink-2); border-top: 1px solid var(--rule); padding-top: 1rem; }
.note-box { background: var(--tint); border-left: 3px solid var(--accent); padding: 1rem 1.25rem; border-radius: 0 3px 3px 0; }
.site-footer .affil { color: var(--ink); }

.hero-grid { display: grid; gap: 2rem; align-items: center; }
.hero-mark { display: none; }
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 16rem; }
  .hero-mark { display: block; color: var(--accent); opacity: .92; }
  .hero-mark svg { width: 100%; height: auto; }
}

/* QA fixes */
.faq summary::before { content: "+"; display: inline-block; width: 1.25rem; color: var(--accent); font-weight: 600; }
.faq details[open] summary::before { content: "\2212"; }
.lab-form ::placeholder { color: var(--ink-2); opacity: 1; }
@media (max-width: 759px) { .js .site-nav a { padding: .95rem 0; } }
.person h2 { font-size: 1.5rem; }
.cohort h2 { font-size: var(--step-1); }