/* Presentation mapping for the supplied v3.0.1 visual system.
   Scientific content, source values, and release metadata remain unchanged. */
:root {
  --bg: var(--uacb-bg);
  --card: var(--uacb-surface);
  --paper: var(--uacb-surface);
  --soft: var(--uacb-surface-muted);
  --ink: var(--uacb-text);
  --muted: var(--uacb-text-muted);
  --line: var(--uacb-border);
  --accent: var(--uacb-teal-700);
  --accent2: var(--uacb-teal-100);
  --focus: var(--uacb-focus);
}

[hidden] { display: none !important; }
html { background: var(--uacb-bg); scroll-padding-top: 90px; }
body { min-width: 0; font-size: 16px; overflow-wrap: break-word; }
button, input, textarea, select { font: inherit; }
input, textarea, select {
  color: var(--uacb-text);
  background: var(--uacb-surface);
  border: 1px solid var(--uacb-border-strong);
  border-radius: var(--uacb-radius-sm);
  min-height: 44px;
  max-width: 100%;
}
input, textarea { -webkit-appearance: none; appearance: none; }
input::placeholder, textarea::placeholder { color: var(--uacb-text-muted); opacity: 1; }
button, .btn, .uacb-chip { min-height: 44px; touch-action: manipulation; }
button:disabled { cursor: default; opacity: .58; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible,
select:focus-visible, summary:focus-visible, .uacb-primary-button:focus-visible,
.uacb-chip:focus-visible, .uacb-nav-link:focus-visible {
  outline: 3px solid var(--uacb-focus);
  outline-offset: 3px;
}
a { color: var(--uacb-teal-700); }
h1, h2, h3 { color: var(--uacb-navy-950); }

.site-header {
  margin: 0;
  background: var(--uacb-surface);
  border-bottom: 1px solid var(--uacb-border);
}
.site-header .nav {
  max-width: var(--uacb-max-width);
  min-height: 68px;
  margin: 0 auto;
  padding: 10px 22px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 1rem;
}
.site-header .nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 12px;
  border-radius: var(--uacb-radius-sm);
  color: var(--uacb-navy-800);
  font-size: 1rem;
  font-weight: 650;
}
.site-header .nav a:hover, .site-header .nav a[aria-current="page"] {
  background: var(--uacb-teal-100);
  color: var(--uacb-navy-950);
}
.site-header .nav .brand {
  margin-right: auto;
  padding-left: 0;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--uacb-navy-950);
}
.site-header .badge {
  margin-right: 12px;
  padding: 4px 9px;
  background: var(--uacb-surface-muted);
  color: var(--uacb-text-muted);
  border: 1px solid var(--uacb-border);
}
.wrap { max-width: var(--uacb-max-width); padding: 30px 22px 64px; }
main#content { max-width: 900px; padding: 30px 22px 64px; }
main#content > nav, .breadcrumbs { margin: 0 0 22px; }
main#content > article > header { margin-bottom: 24px; }
.eyebrow { color: var(--uacb-teal-700); }
.page-intro { margin-bottom: 22px; }
.page-intro h1 { margin: 8px 0 12px; }
.page-intro > p { margin: 8px 0; }
.card, .metric {
  border: 1px solid var(--uacb-border);
  border-radius: var(--uacb-radius-lg);
  background: var(--uacb-surface);
  box-shadow: var(--uacb-shadow-sm);
}
.card h2:first-child { margin-top: 0; }
.btn, .searchbox button {
  border: 1px solid var(--uacb-navy-950);
  border-radius: 10px;
  background: var(--uacb-navy-950);
  color: #fff;
  font: inherit;
  font-weight: 700;
  line-height: 1.35;
  min-height: 44px;
  padding: 12px 16px;
  text-align: center;
}
.btn:hover, .searchbox button:hover { background: var(--uacb-navy-800); }
.btn.secondary {
  background: var(--uacb-surface);
  color: var(--uacb-navy-800);
  border-color: var(--uacb-border-strong);
}
.btn.secondary:hover { background: var(--uacb-teal-100); border-color: var(--uacb-teal-600); }
.notice {
  color: var(--uacb-text);
  background: var(--uacb-blue-100);
  border-left: 4px solid var(--uacb-teal-600);
  border-radius: 0 var(--uacb-radius-md) var(--uacb-radius-md) 0;
}
.scorepill {
  border: 1px solid var(--uacb-border-strong);
  color: var(--uacb-navy-800);
  background: var(--uacb-blue-100);
}
.zeropill { color: var(--uacb-text-muted); background: var(--uacb-surface-muted); }
.gated { color: var(--uacb-unknown); background: var(--uacb-surface-muted); }
.scoretable { border: 1px solid var(--uacb-border); }
.scoretable th { color: var(--uacb-navy-950); background: var(--uacb-surface-muted); }
.scoretable td, .scoretable th { border-color: var(--uacb-border); }
.quick-results button, .chip {
  color: var(--uacb-navy-800);
  background: var(--uacb-surface);
  border-color: var(--uacb-border);
}
.quick-results button:hover { background: var(--uacb-teal-100); border-color: var(--uacb-teal-600); }
.compare-list { margin: 18px 0; }
.compare-list:empty { display: none; }
.compare-list .chip { display: inline-flex; gap: 8px; align-items: center; max-width: 100%; overflow-wrap: anywhere; padding: 3px 4px 3px 12px; }
.compare-list .chip button {
  width: 44px;
  min-width: 44px;
  border: 1px solid transparent;
  border-radius: 50%;
  background: var(--uacb-surface-muted);
  color: var(--uacb-navy-800);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}
.compare-list .chip button:hover { background: var(--uacb-teal-100); }
#compare { min-width: 0; max-width: 100%; overflow-x: auto; }
#compare .scoretable { display: table; min-width: 100%; }
.grid, .uacb-grid { min-width: 0; }
.grid > *, .uacb-grid > * { min-width: 0; }
.alpha-nav a { min-height: 44px; min-width: 44px; display: inline-flex; align-items: center; justify-content: center; }
.med-list { grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.med-list li a { min-width: 0; }
.searchbox input, .hero-search input, .followup input, .library-tools input { min-width: 0; }
.article-filter input, .article-filter select { min-width: 0; }
.article-actions .btn { font: inherit; font-weight: 600; }
.references a, .uacb-reference-list a, .citation-box { overflow-wrap: anywhere; }

/* Compact home and shared conversation composer. */
.uacb-home .hero { max-width: 880px; padding: 0 0 16px; }
.uacb-home .hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.08; margin: 8px 0 12px; }
.uacb-home .hero p { margin: 8px 0; font-size: 1.05rem; }
.uacb-home .hero .eyebrow { font-size: .78rem; }
.uacb-ask-card { max-width: 100%; padding: clamp(16px, 3vw, 26px); }
.uacb-ask-card h2 { font-size: 1.25rem; margin: 0; padding: 0; border: 0; }
.uacb-ask-heading { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.uacb-ask-heading .btn { padding: 10px 13px; font-size: .9rem; }
.uacb-ask-card form { margin: 0; }
.uacb-ask-composer { width: 100%; min-width: 0; }
.uacb-ask-card .uacb-ask-input {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 68px;
  margin: 0;
  padding: 10px 12px;
  border: 0;
  border-radius: var(--uacb-radius-sm);
  background: var(--uacb-surface);
  font-size: 1rem;
  line-height: 1.5;
}
.uacb-ask-card .uacb-ask-input:focus { outline-offset: -3px; }
.uacb-ask-composer .uacb-primary-button { flex-shrink: 0; }
.uacb-ask-help { display: flex; gap: 8px 20px; flex-wrap: wrap; justify-content: space-between; margin: 10px 0 0; }
.uacb-ask-help > * { margin: 0; }
#askcontextlabel { margin: 0 0 12px; }
#askcontextlabel:empty, #askerror:empty { display: none; }
#askout:empty { margin-top: 0; }
#askstatus { margin: 12px 0 0; }
#askstatus:empty { margin: 0; }
#askerror { color: var(--uacb-high); margin: 12px 0 8px; }
.uacb-chip-row { min-width: 0; }
.uacb-chip { max-width: 100%; min-height: 44px; line-height: 1.35; white-space: normal; overflow-wrap: anywhere; text-decoration: none; }
a.uacb-chip { display: inline-flex; align-items: center; }
.uacb-message { min-width: 0; overflow-wrap: anywhere; scroll-margin-top: 90px; }
.uacb-message--assistant:focus-visible { outline: 3px solid var(--uacb-focus); outline-offset: 4px; }
.uacb-message h2, .uacb-message h3 { border: 0; padding-top: 0; }
.uacb-message .result { box-shadow: none; }
.uacb-message--user p:last-child, .uacb-message--assistant > p:last-child { margin-bottom: 0; }
.uacb-message--user > p:first-child { margin-top: 0; }
.uacb-message-list { scroll-margin-top: 90px; }
.uacb-answer-table-wrap { max-width: 100%; overflow-x: auto; }
.uacb-context-note { font-size: .92rem; color: var(--uacb-text-muted); }
.uacb-reference-list { padding-left: 22px; }
.uacb-reference-list li { margin: .65em 0; }
.uacb-home .trustbar { margin: 22px 0 0; border-top: 1px solid var(--uacb-border); padding: 14px 0; gap: 8px 24px; }
.uacb-home .tool-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.uacb-home .tool-grid .card { padding: 22px; }
.uacb-home .tool-grid .card h2 { font-size: 1.25rem; }
.uacb-home .tool-grid .card p:last-child { margin-top: 14px; }
.uacb-home .home-more { margin-top: 28px; }
.uacb-home .home-more h2 { margin: 0 0 12px; font-size: 1.5rem; }
.uacb-article-links { margin: 16px 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.uacb-article-links li { margin: 0; }
.uacb-article-links a { display: block; height: 100%; padding: 16px; border: 1px solid var(--uacb-border); border-radius: var(--uacb-radius-md); background: var(--uacb-surface); font-weight: 600; }
.uacb-article-links a:hover { border-color: var(--uacb-teal-600); }
.uacb-context-card { margin: 24px 0; padding: 20px; }
.uacb-context-card h2 { margin: 0 0 8px; padding: 0; border: 0; font-size: 1.25rem; }
.uacb-context-card p { margin: 8px 0 12px; }
.uacb-context-card .uacb-context-primary { display: inline-flex; align-items: center; }
.uacb-context-card .uacb-chip-row { margin-top: 14px; }
.footer { margin-top: 0; border-color: var(--uacb-border); }
.footer > div { max-width: calc(var(--uacb-max-width) - 44px) !important; }
.footer h2 { border: 0; padding: 0; }

@media (max-width: 820px) {
  .uacb-ask-composer { flex-direction: column; align-items: stretch; }
  .uacb-ask-composer .uacb-primary-button { width: 100%; }
  .uacb-home .tool-grid, .uacb-article-links { grid-template-columns: 1fr; }
  .uacb-home .hero h1 { max-width: 22ch; }
  .uacb-message--user { margin-left: 16px; }
}
@media (max-width: 620px) {
  html { scroll-padding-top: 12px; }
  .site-header { position: static; }
  .site-header .nav {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: center;
    gap: 2px 4px;
    padding: 8px 12px;
  }
  .site-header .nav .brand { grid-column: 1 / 4; justify-content: flex-start; margin: 0; padding-left: 0; }
  .site-header .badge { grid-column: 4; order: 0; justify-self: end; margin: 0; }
  .site-header .nav a:not(.brand) { font-size: .92rem; padding: 9px 6px; }
  .wrap, main#content { padding: 20px 12px 44px; }
  .uacb-home .hero { padding-bottom: 12px; }
  .uacb-home .hero h1 { font-size: 1.95rem; }
  .uacb-home .hero p { font-size: 1rem; }
  .uacb-ask-card { padding: 14px; }
  .uacb-ask-heading { gap: 6px; margin-bottom: 10px; }
  .uacb-ask-heading h2 { font-size: 1.1rem; }
  .uacb-ask-heading .btn { padding: 8px 10px; font-size: .84rem; }
  .uacb-ask-composer { padding: 6px; gap: 6px; }
  .uacb-ask-card .uacb-ask-input { min-height: 68px; padding: 9px; }
  .uacb-chip { font-size: .9rem; padding: 9px 11px; }
  .uacb-home .trustbar { display: flex; gap: 8px 18px; }
  .uacb-context-card { padding: 16px; }
  .uacb-context-primary { max-width: 100%; }
  .uacb-message { padding: 14px; scroll-margin-top: 12px; }
  .uacb-message--user { margin-left: 12px; }
  .uacb-message-list { scroll-margin-top: 12px; }
  .searchbox { flex-direction: column; }
  .searchbox input, .searchbox button { width: 100%; }
  .profile-actions .btn { flex-basis: calc(50% - 8px); }
  .article-actions .btn { flex-basis: calc(50% - 8px); }
  .scoretable { max-width: 100%; }
  #compare .scoretable { min-width: 480px; }
  .footer { padding: 26px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}
@media print {
  .uacb-context-card, .uacb-ask-card, .uacb-ask-feedback { display: none !important; }
  .uacb-message-list { display: block; }
  .uacb-message { margin: 12px 0; box-shadow: none; }
  .uacb-message--user { margin-left: 0; }
  #compare, .uacb-answer-table-wrap { overflow: visible; }
  .scoretable, #compare .scoretable { min-width: 0; display: table; font-size: 9pt; }
}