/* ============================================================
   KNOWLEDGE ARTICLE TEMPLATE
   Long-form medical information pages. Global tokens, navigation,
   breadcrumb, footer and shared typography live in main.css.
   ============================================================ */

.knowledge-hero {
  padding: 5.5rem 3.75rem 4.75rem;
  border-bottom: 0.5px solid var(--surface-alt);
}

.knowledge-hero-inner { max-width: 920px; }

.knowledge-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1.25rem;
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.knowledge-kicker::before {
  width: 24px;
  height: 0.5px;
  background: var(--accent);
  content: '';
}

.knowledge-h1 {
  max-width: 860px;
  margin-bottom: 1.35rem;
  color: var(--text-primary);
  font-family: 'Cormorant Garamond', serif;
  font-size: 58px;
  font-weight: 300;
  line-height: 1.05;
}

.knowledge-dek {
  max-width: 740px;
  color: var(--text-secondary);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.85;
}

.knowledge-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.25rem;
  margin-top: 1.75rem;
  color: var(--text-muted);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}

.knowledge-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  border-bottom: 0.5px solid var(--surface-alt);
}

.knowledge-main {
  min-width: 0;
  padding: 5.5rem 3.75rem;
  border-right: 0.5px solid var(--surface-alt);
}

.knowledge-sidebar { padding: 3rem 2rem; }
.knowledge-sidebar-inner { position: sticky; top: 90px; }

.article-body { max-width: 760px; }

.article-body p,
.article-body li {
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.95;
}

.article-body p { margin-bottom: 1.4rem; }
.article-body ul,
.article-body ol { margin: 0 0 1.6rem 1.35rem; }
.article-body li + li { margin-top: 0.55rem; }

.article-body h2 {
  margin: 3.6rem 0 1.2rem;
  color: var(--text-primary);
  font-family: 'Cormorant Garamond', serif;
  font-size: 34px;
  font-weight: 300;
  line-height: 1.15;
  scroll-margin-top: 110px;
}

.article-body h3 {
  margin: 2.4rem 0 0.9rem;
  color: var(--text-primary);
  font-family: 'Cormorant Garamond', serif;
  font-size: 23px;
  font-weight: 400;
  line-height: 1.25;
  scroll-margin-top: 110px;
}

.article-body a,
.contextual-link {
  color: var(--accent-dark);
  text-decoration-color: var(--accent-light);
  text-decoration-thickness: 0.5px;
  text-underline-offset: 3px;
}

.article-body a:hover,
.contextual-link:hover { color: var(--accent); }

.clinical-callout {
  margin: 2.5rem 0;
  padding: 1.8rem 2rem;
  border-left: 2px solid var(--accent);
  background: var(--surface);
}

.clinical-callout-title {
  margin-bottom: 0.65rem;
  color: var(--text-primary);
  font-family: 'Cormorant Garamond', serif;
  font-size: 19px;
  font-weight: 400;
}

.clinical-callout p:last-child { margin-bottom: 0; }

.evidence-ref {
  margin-left: 0.15em;
  font-size: 0.72em;
  line-height: 0;
  vertical-align: super;
}

.evidence-ref a {
  padding: 0 0.08em;
  color: var(--accent-dark);
  font-weight: 500;
  text-decoration: none;
}

.evidence-ref a + a::before {
  margin-right: 0.12em;
  color: var(--text-muted);
  content: ',';
}

.reference-section {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 0.5px solid var(--surface-alt);
}

.reference-list { margin-left: 1.25rem; }
.reference-list li {
  padding-left: 0.35rem;
  scroll-margin-top: 110px;
}
.reference-list li:target { background: var(--surface); }

.side-card {
  margin-bottom: 1.5rem;
  padding: 1.8rem;
  border: 0.5px solid var(--accent-light);
  border-radius: 1px;
  background: var(--bg);
}

.side-card-title {
  margin-bottom: 0.7rem;
  color: var(--text-primary);
  font-family: 'Cormorant Garamond', serif;
  font-size: 20px;
  font-weight: 300;
}

.article-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-toc li + li { border-top: 0.5px solid var(--surface-alt); }
.article-toc a {
  display: block;
  padding: 0.75rem 0;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 300;
  line-height: 1.55;
  text-decoration: none;
}
.article-toc a:hover { color: var(--accent); }

.side-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-bottom: 8px;
  padding: 13px;
  border: 0;
  border-radius: 1px;
  background: var(--accent);
  color: var(--inv-text);
  font-family: 'Jost', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}
.side-btn:hover { opacity: 0.88; }

.side-btn-s {
  display: block;
  width: 100%;
  padding: 12px;
  border: 0.5px solid var(--accent);
  border-radius: 1px;
  background: transparent;
  color: var(--accent);
  font-family: 'Jost', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
}
.side-btn-s:hover { background: var(--surface); }

.side-note {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 300;
  text-align: center;
}

.related-knowledge {
  padding: 4.5rem 3.75rem;
  background: var(--surface);
}

.related-knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2rem;
  border: 0.5px solid var(--surface-alt);
  background: var(--surface-alt);
}

.related-knowledge-card {
  display: block;
  padding: 1.5rem;
  background: var(--bg);
  color: var(--text-primary);
  text-decoration: none;
}
.related-knowledge-card:hover { background: var(--surface-alt); }

.related-knowledge-label {
  margin-bottom: 0.45rem;
  color: var(--accent);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.related-knowledge-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 18px;
  font-weight: 400;
  line-height: 1.3;
}

@media (max-width: 900px) {
  .knowledge-hero { padding: 3.5rem 1.5rem; }
  .knowledge-h1 { font-size: 40px; }
  .knowledge-layout { grid-template-columns: 1fr; }
  .knowledge-main { padding: 3.5rem 1.5rem; border-right: 0; }
  .knowledge-sidebar { padding: 2rem 1.5rem; border-top: 0.5px solid var(--surface-alt); }
  .knowledge-sidebar-inner { position: static; }
  .related-knowledge { padding: 3.5rem 1.5rem; }
}

@media (max-width: 640px) {
  .knowledge-h1 { font-size: 34px; }
  .knowledge-dek { font-size: 15px; }
  .knowledge-meta { flex-direction: column; gap: 0.45rem; }
  .article-body h2 { font-size: 29px; }
  .article-body h3 { font-size: 21px; }
  .reference-list li,
  .reference-list a { overflow-wrap: anywhere; }
  .related-knowledge-grid { grid-template-columns: 1fr; }
}