:root {
  --ink: #13231f;
  --muted: #53645f;
  --paper: #f5f2e9;
  --white: #fffefa;
  --teal: #0b5d54;
  --mint: #9bd8c5;
  --orange: #df6b3b;
  --line: #cfd6cc;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}
a { color: inherit; }
.draft-banner {
  padding: .55rem 1rem;
  background: var(--orange);
  color: var(--ink);
  text-align: center;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .02em;
}
.site-header {
  max-width: var(--max);
  margin: auto;
  padding: 1.2rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand { display: flex; flex-shrink: 0; gap: .7rem; align-items: center; white-space: nowrap; text-decoration: none; font-size: 1.05rem; }
.brand-mark { display: grid; place-items: center; width: 2.35rem; height: 2.35rem; border-radius: 50%; background: var(--teal); color: white; font-weight: 800; }
nav { display: flex; gap: 1.4rem; font-size: .9rem; font-weight: 650; }
nav a { text-decoration: none; border-bottom: 1px solid transparent; }
nav a:hover, nav a:focus { border-color: currentColor; }
.hero {
  max-width: var(--max);
  min-height: 610px;
  margin: auto;
  padding: 5rem 2rem 6rem;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, .65fr);
  align-items: center;
  gap: 5rem;
}
.eyebrow { margin: 0 0 1rem; color: var(--teal); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 800px; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(3.1rem, 7vw, 6.6rem); font-weight: 500; }
h1 em { color: var(--teal); font-style: italic; }
h2 { margin: 0 0 1.5rem; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.1rem, 4vw, 3.7rem); font-weight: 500; }
h3 { font-size: 1.35rem; }
.lede { max-width: 720px; margin: 2rem 0; color: var(--muted); font-size: 1.18rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.button { padding: .8rem 1rem; border: 1px solid var(--teal); border-radius: 999px; text-decoration: none; font-weight: 750; }
.button.primary { background: var(--teal); color: white; }
.button.secondary { color: var(--teal); }
.event-facts { display: flex; flex-wrap: wrap; gap: 2.5rem; margin: 3rem 0 0; }
.event-facts div { display: grid; gap: .2rem; }
.event-facts dt { color: var(--muted); font-size: .75rem; font-weight: 750; text-transform: uppercase; letter-spacing: .08em; }
.event-facts dd { margin: 0; font-weight: 700; }
.deadline-card { padding: 2rem; border: 1px solid var(--line); border-radius: 1.2rem; background: var(--white); box-shadow: 0 25px 70px rgba(19,35,31,.08); transform: rotate(1.5deg); }
.card-label { color: var(--muted); font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }
.deadline-title { margin: 2rem 0 .2rem; font-size: 1.1rem; font-weight: 750; }
.deadline-date { margin: 0 0 1rem; font-family: Georgia, serif; font-size: 2.3rem; line-height: 1.05; }
.status-chip { display: inline-block; padding: .3rem .65rem; border-radius: 999px; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.status-chip.proposed { background: #f9dfcf; color: #8a3819; }
.status-chip.confirmed { background: #d4eee5; color: #0a534b; }
.countdown { margin-top: 2rem; color: var(--muted); font-size: .85rem; }
.section { max-width: var(--max); margin: auto; padding: 6rem 2rem; border-top: 1px solid var(--line); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 6rem; }
.prose { font-size: 1.15rem; color: var(--muted); }
.track-grid, .submission-grid, .chair-grid, .person-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.track-grid article, .submission-grid article, .chair-card, .person-card { min-height: 260px; padding: 1.7rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--white); }
.track-number { color: var(--orange); font-family: Georgia, serif; font-size: 1.5rem; }
.track-grid p, .submission-grid p, .chair-card p, .person-card p { color: var(--muted); }
.dates-section { display: grid; grid-template-columns: .7fr 1.3fr; gap: 6rem; }
.date-list { border-top: 1px solid var(--ink); }
.date-row { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.date-row p { margin: 0; }
.date-row .date-value { text-align: right; font-weight: 750; }
.date-row small { display: block; color: var(--muted); }
.section-note { max-width: 680px; color: var(--muted); }
.notice { margin-top: 1.5rem; padding: 1.2rem 1.4rem; border-left: 4px solid var(--orange); background: var(--white); }
.chair-card, .person-card { min-height: 180px; }
.chair-card a, .person-card a { color: var(--teal); font-weight: 750; }
[hidden] { display: none !important; }
footer { max-width: var(--max); margin: auto; padding: 2rem; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 2rem; color: var(--muted); font-size: .85rem; }
@media (max-width: 800px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 1rem; }
  nav { display: flex; flex-wrap: wrap; gap: .55rem 1rem; }
  .hero, .split, .dates-section { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero { padding-top: 3rem; }
  .track-grid, .submission-grid, .chair-grid, .person-grid { grid-template-columns: 1fr; }
  .event-facts { gap: 1.3rem; }
  footer { display: block; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Generated multi-page preview */
.skip-link {
  position: fixed;
  z-index: 20;
  top: .5rem;
  left: .5rem;
  padding: .7rem 1rem;
  background: var(--ink);
  color: white;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.site-header {
  max-width: none;
  padding-inline: max(2rem, calc((100vw - var(--max)) / 2));
  gap: 1rem 1.5rem;
  background: rgba(245, 242, 233, .96);
  border-bottom: 1px solid var(--line);
}
.site-header nav { flex-wrap: wrap; justify-content: flex-end; gap: .7rem 1rem; font-size: .82rem; }
.site-header nav a { white-space: nowrap; }
.site-header nav a[aria-current="page"] { color: var(--teal); border-color: currentColor; }
main { overflow: hidden; }
.page-intro {
  max-width: var(--max);
  margin: auto;
  padding: 6rem 2rem 4.5rem;
}
.page-intro h1 { max-width: 940px; font-size: clamp(2.8rem, 6vw, 5.8rem); }
.hero-main h1 { font-size: clamp(2.2rem, 4.25vw, 4.2rem); }
.content-block,
.track-scope,
.roster-group,
.process-grid,
main > .date-list,
main > .notice,
main > .card-grid,
main > .empty-state {
  max-width: var(--max);
  margin: auto;
  padding: 5rem 2rem;
  border-top: 1px solid var(--line);
}
.content-block {
  display: grid;
  grid-template-columns: minmax(160px, .42fr) minmax(0, 1.58fr);
  gap: 4rem;
}
.content-block > .process-grid {
  grid-column: 1 / -1;
  width: 100%;
  max-width: none;
  margin: 1.5rem 0 0;
  padding: 2rem 0 0;
  border-top: 1px solid var(--line);
}
.section-label {
  margin: 0;
  color: var(--teal);
  font-family: inherit;
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .12em;
  line-height: 1.55;
  text-transform: uppercase;
}
.measure { max-width: 780px; color: var(--muted); font-size: 1.12rem; }
.measure > :first-child { margin-top: 0; }
.measure > :last-child { margin-bottom: 0; }
.cfp-document .measure { max-width: 860px; }
.cfp-document h2 {
  margin: 3.8rem 0 1.25rem;
  color: var(--ink);
  font-size: clamp(2rem, 3.5vw, 3rem);
}
.cfp-document h3 {
  margin: 2.5rem 0 .8rem;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.65rem;
  font-weight: 500;
}
.cfp-document h4 {
  margin: 1.8rem 0 .6rem;
  color: var(--ink);
  font-size: 1rem;
  letter-spacing: .01em;
}
.cfp-document p,
.cfp-document li { max-width: 76ch; }
.cfp-document ul { margin: .8rem 0 1.7rem; padding-left: 1.3rem; }
.cfp-document li + li { margin-top: .5rem; }
.cfp-document a { color: var(--teal); font-weight: 700; text-underline-offset: .2em; }
.cfp-document .cfp-source-warning {
  margin: 0 0 3rem;
  color: var(--ink);
  font-size: 1rem;
}
.merger-copy p:first-child { color: var(--ink); font-size: 1.55rem; font-family: Georgia, serif; }
.hero { min-height: 560px; }
.hero-main { min-width: 0; }
.event-card {
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--white);
  box-shadow: 0 25px 70px rgba(19,35,31,.08);
}
.event-card strong { display: block; margin: 2rem 0 .35rem; font: 500 2rem/1.1 Georgia, serif; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.track-card,
.person-card,
.process-card {
  min-height: 230px;
  padding: 1.65rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--white);
}
.track-card p,
.person-card p,
.process-card p { color: var(--muted); }
.person-card h3 { margin-bottom: .45rem; }
.person-card h3 a { color: var(--teal); text-underline-offset: .2em; }
.person-card-tbd {
  border-style: dashed;
  background: transparent;
}
.person-card-tbd h3 { color: var(--muted); }
.person-detail { margin-top: 1.6rem; font-size: .82rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.institution { margin-top: 0; }
.status {
  display: inline-flex;
  margin-top: .5rem;
  padding: .3rem .65rem;
  border-radius: 999px;
  background: #e7e3d8;
  color: var(--muted);
  font-size: .7rem;
  font-weight: 850;
  letter-spacing: .04em;
  text-transform: capitalize;
}
.status-confirmed { background: #d4eee5; color: #0a534b; }
.status-proposed,
.status-expected_from_2026,
.status-label_to_confirm,
.status-proposed_pending_policy_approval,
.status-pending_configuration { background: #f9dfcf; color: #8a3819; }
.date-list { padding-top: 0; }
.date-row { align-items: start; }
.date-row h3, .date-row h4 { margin: 0 0 .3rem; font-size: 1rem; letter-spacing: 0; }
.date-row time { font-weight: 750; text-align: right; }
.notice {
  margin-top: 0;
  margin-bottom: 0;
  border-left: 0;
  background: #fff2e9;
}
.notice strong { font-size: 1.12rem; }
.notice p { max-width: 760px; margin-bottom: 0; color: var(--muted); }
.track-scope h2,
.roster-group h2 { margin-bottom: 2rem; }
.track-scope > p { max-width: 800px; color: var(--muted); font-size: 1.08rem; }
.topic-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; margin-top: 2.5rem; }
.topic-group { padding: 1.5rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--white); }
.topic-group h4 { margin-top: 0; font-size: 1rem; }
.topic-group ul { margin-bottom: 0; padding-left: 1.2rem; color: var(--muted); }
.topic-group li + li { margin-top: .45rem; }
.link-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; }
.text-link { color: var(--teal); font-weight: 750; text-underline-offset: .2em; }
.section-foot { margin-top: 1.5rem; }
.section-foot a { color: var(--teal); font-weight: 750; }
.empty-state { background: var(--white); }
.empty-state h2 { font-size: 2rem; }
footer {
  max-width: none;
  padding: 3rem max(2rem, calc((100vw - var(--max)) / 2));
}
footer > div:first-child { max-width: 600px; }
.footer-meta { display: flex; flex-direction: column; gap: .5rem; align-items: flex-end; }

@media (max-width: 1200px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: .75rem; }
  .site-header nav { justify-content: flex-start; }
}
@media (max-width: 980px) {
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .content-block { grid-template-columns: 1fr; gap: 1.5rem; }
  .card-grid, .topic-columns { grid-template-columns: 1fr; }
  .page-intro, .content-block, .track-scope, .roster-group, .process-grid,
  main > .date-list, main > .notice, main > .card-grid, main > .empty-state { padding: 3.5rem 1.2rem; }
  .hero { padding-inline: 1.2rem; }
  .hero-main h1 { font-size: clamp(1.75rem, 8vw, 2.15rem); }
  .date-row { grid-template-columns: 1fr; }
  .date-row time, .date-row .date-value { text-align: left; }
  .footer-meta { align-items: flex-start; margin-top: 1.5rem; }
}

/* Chair-provided conference artwork and official organization marks. */
.brand-logo { display: block; width: 3rem; height: 3rem; flex-shrink: 0; }
.conference-banner { max-width: var(--max); margin: 0 auto; padding: 0 2rem; }
.conference-banner-image { display: block; width: 100%; height: auto; border-radius: .6rem; }
.hero { min-height: 0; padding-top: 2.5rem; padding-bottom: 3rem; gap: 2.5rem; }
.hero-main h1 { font-size: clamp(1.8rem, 2.8vw, 2.65rem); }
.hero .lede { margin: 1.3rem 0; }
footer > div { min-width: 0; }
.organization-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; margin-top: 1.25rem; }
.organization-links a { display: flex; align-items: center; padding: .8rem; border-radius: .4rem; background: #fff; }
.organization-logo { display: block; width: auto; height: auto; max-width: 100%; }
.organization-logo.acm { width: 218px; }
.organization-logo.sigbed { width: 200px; }
.social-follow a { display: inline-block; padding: .4rem 0; color: var(--teal); font-weight: 700; text-underline-offset: .2em; }
@media (max-width: 600px) {
  .conference-banner { padding: 0 1rem; }
  .site-header { padding: 1rem; }
  .organization-links { gap: .75rem; }
}