/* Medical Research — Color overrides */
:root {
  --color-header: #0a3d62;
  --color-primary: #174ea6;
  --color-accent-bg: #e3f0fa;
  --color-heading: #0a3d62;
  --color-cta: #174ea6;
  --color-cta-hover: #0a3d62;
  --color-sidebar-accent: #0a3d62;
  --color-hr: #0a3d62;
  --color-link: #0a3d62;
  --color-footer: #0a3d62;
  --color-card-border: #174ea6;
}

/* Sovereign AI featured section */
.sovereign-feature {
  background: linear-gradient(135deg, #e3f0fa 0%, #f0f7fc 100%);
  border-top: 4px solid #174ea6;
  border-bottom: 4px solid #174ea6;
  padding: 40px 0;
  margin: 40px 0;
}
.sovereign-feature .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  color: #174ea6;
  font-weight: 700;
  margin-bottom: 8px;
}
.sovereign-feature h2 { color: #0a3d62; font-size: 2rem; margin: 0 0 20px 0; }
.sovereign-definition {
  background: #fff;
  border-left: 6px solid #174ea6;
  padding: 18px 22px;
  margin: 20px 0 28px 0;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(23,78,166,0.08);
}
.sovereign-definition strong { color: #174ea6; }
.sovereign-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
  margin: 24px 0;
}
.sovereign-grid .card {
  background: #fff;
  border-top: 3px solid #174ea6;
  padding: 18px;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(10,61,98,0.08);
}
.sovereign-grid .card h3 { color: #0a3d62; margin: 0 0 12px 0; font-size: 1.1rem; }
.sovereign-grid .card ul { padding-left: 1.2rem; margin: 0; }
.sovereign-grid .card li { margin-bottom: 0.5rem; font-size: 0.95rem; color: #0a3d62; }
.sovereign-grid .card p { font-size: 0.95rem; color: #0a3d62; margin: 0; }
.callout {
  background: #0a3d62; color: #fff;
  padding: 22px 26px; border-radius: 6px;
  margin: 28px 0; font-size: 1.08rem;
  border-left: 6px solid #174ea6;
}
.callout strong { color: #93c5fd; }

@media (max-width: 700px) {
  .sovereign-feature h2 { font-size: 1.5rem; }
}

/* Hexagonal grid — evokes molecular/data structure */
.hero {
  background:
    linear-gradient(30deg, rgba(10,61,98,0.04) 12%, transparent 12.5%, transparent 87%, rgba(10,61,98,0.04) 87.5%),
    linear-gradient(150deg, rgba(10,61,98,0.04) 12%, transparent 12.5%, transparent 87%, rgba(10,61,98,0.04) 87.5%),
    linear-gradient(30deg, rgba(10,61,98,0.04) 12%, transparent 12.5%, transparent 87%, rgba(10,61,98,0.04) 87.5%),
    linear-gradient(150deg, rgba(10,61,98,0.04) 12%, transparent 12.5%, transparent 87%, rgba(10,61,98,0.04) 87.5%),
    linear-gradient(60deg, rgba(23,78,166,0.03) 25%, transparent 25.5%, transparent 75%, rgba(23,78,166,0.03) 75%),
    linear-gradient(60deg, rgba(23,78,166,0.03) 25%, transparent 25.5%, transparent 75%, rgba(23,78,166,0.03) 75%),
    var(--color-accent-bg);
  background-size: 40px 70px;
  background-position: 0 0, 0 0, 20px 35px, 20px 35px, 0 0, 20px 35px;
}