.hub-page .navbar {
  position: sticky;
}

.hub-main {
  padding-top: 1rem;
}

.hub-page .nav-links {
  flex: 0 1 auto;
}

.hub-hero {
  min-height: auto;
  padding: 8rem 0 4rem;
}

.hub-hero .hero-title {
  font-size: 4rem;
  letter-spacing: 0;
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: normal;
}

.hub-kicker {
  color: var(--accent-glow);
  font-weight: 700;
  margin-bottom: 1rem;
}

.hub-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.hub-toc {
  position: sticky;
  top: 7rem;
  padding: 1.5rem;
  border-radius: var(--radius-md);
}

.hub-toc a,
.hub-link-card,
.hub-inline-link {
  color: var(--accent-glow);
  text-decoration: none;
}

.hub-toc a:hover,
.hub-link-card:hover,
.hub-inline-link:hover {
  color: white;
}

.hub-toc ul {
  list-style: none;
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
}

.hub-article {
  display: grid;
  gap: 1.5rem;
}

.hub-article section,
.hub-card,
.hub-link-card {
  padding: 2rem;
  border-radius: var(--radius-md);
}

.hub-article h2,
.hub-card h2,
.hub-link-card h3 {
  margin-bottom: 0.85rem;
}

.hub-article p,
.hub-article li,
.hub-card p,
.hub-link-card p {
  color: var(--text-secondary);
}

.hub-article ul {
  margin: 1rem 0 0 1.2rem;
}

.hub-card-grid,
.hub-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.hub-link-card {
  display: block;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  transition: var(--transition);
}

.hub-link-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glow);
}

.hub-faq {
  display: grid;
  gap: 1rem;
}

.hub-ai-decision-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.2rem;
}

.hub-clinical-note,
.hub-workflow-map {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(34, 211, 238, 0.055);
  padding: 1rem;
}

.hub-clinical-note h3,
.hub-workflow-map h3 {
  color: var(--text-primary);
  margin-bottom: 0.55rem;
}

.hub-boundary-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.hub-boundary-list li {
  color: var(--text-secondary);
}

.hub-workflow-map {
  margin-top: 1.2rem;
}

.hub-workflow-map ul {
  margin-top: 0.75rem;
}

.hub-updated {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 1rem;
}

.hub-short-answer {
  padding: 1.5rem 2rem;
  border-left: 3px solid var(--accent);
}

.hub-short-answer strong,
.hub-author-box strong {
  color: var(--text-primary);
}

.hub-short-answer p {
  margin: 0.7rem 0 0;
}

.hub-author-box {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem 2rem;
}

.hub-author-box p {
  margin: 0.45rem 0 0;
}

.hub-author-kicker {
  color: var(--accent-glow);
  font-size: 0.8rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  text-transform: uppercase;
}

.hub-author-links {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-end;
}

.hub-author-links a {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--accent-glow);
  font-size: 0.9rem;
  padding: 0.5rem 0.75rem;
  text-decoration: none;
  transition: var(--transition);
}

.hub-author-links a:hover {
  border-color: var(--border-glow);
  color: white;
  transform: translateY(-2px);
}

.hub-diagram {
  margin: 0;
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(15, 23, 42, 0.72));
}

.hub-diagram svg {
  display: block;
  width: 100%;
  min-width: 760px;
  height: auto;
}

.hub-diagram figcaption {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.7rem;
}

.hub-diagram-box {
  fill: rgba(2, 6, 23, 0.7);
  stroke: var(--border);
}

.hub-diagram-step rect {
  fill: rgba(15, 23, 42, 0.95);
  stroke: rgba(34, 211, 238, 0.34);
}

.hub-diagram-step circle {
  fill: rgba(34, 211, 238, 0.18);
  stroke: var(--accent);
}

.hub-diagram-step text {
  fill: var(--text-primary);
  font-family: Inter, sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.hub-diagram-step .hub-diagram-index {
  fill: var(--accent-glow);
  font-size: 12px;
}

.hub-diagram-arrow,
.hub-diagram-arrowhead {
  fill: var(--accent);
  stroke: var(--accent);
  stroke-width: 2;
}

.hub-reference-list {
  display: grid;
  gap: 0.85rem;
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
}

.hub-reference-list li,
.hub-faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.035);
  padding: 1rem;
}

.hub-reference-list a {
  color: var(--accent-glow);
  display: inline-block;
  font-weight: 700;
  text-decoration: none;
}

.hub-reference-list a:hover {
  color: white;
}

.hub-reference-list span {
  color: var(--text-secondary);
  display: block;
  margin-top: 0.35rem;
}

.hub-faq-item h3 {
  margin-bottom: 0.45rem;
}

.hub-disclaimer {
  color: var(--text-muted);
  font-size: 0.95rem;
}

@media (max-width: 960px) {
  .hub-page .nav-links {
    display: flex;
    position: static;
    inset: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    padding: 0;
    gap: 0.5rem 0.9rem;
    background: transparent;
    border: 0;
    border-radius: 0;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .hub-page .nav-links a {
    width: auto;
    padding: 0.3rem 0;
    border-bottom: 0;
    font-size: 0.78rem;
  }

  .hub-page .nav-links a.nav-app-link {
    width: auto;
    min-width: 0;
    margin-top: 0;
    padding: 0.35rem 0.7rem;
  }

  .hub-layout,
  .hub-card-grid,
  .hub-link-grid,
  .hub-ai-decision-grid {
    grid-template-columns: 1fr;
  }

  .hub-author-box {
    flex-direction: column;
  }

  .hub-author-links {
    justify-content: flex-start;
  }

  .hub-diagram svg {
    min-width: 680px;
  }

  .hub-toc {
    position: static;
  }
}

@media (max-width: 768px) {
  .hub-page .nav-container {
    align-items: flex-start;
    border-radius: var(--radius-md);
    flex-direction: column;
    gap: 0.75rem;
  }

  .hub-page .logo-text {
    display: inline;
  }

  .hub-page .nav-links {
    justify-content: flex-start;
    width: 100%;
  }

  .hub-hero {
    padding: 6rem 0 3rem;
  }

  .hub-hero .hero-title {
    font-size: 2.6rem;
    line-height: 1.08;
  }
}

@media (max-width: 480px) {
  .hub-hero .hero-title {
    font-size: 1.85rem;
  }
}