.head-hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding: var(--space-7);
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 700;
}

.crumb-link {
  color: var(--color-brand-900);
  text-decoration: none;
}

.crumb-link:hover {
  text-decoration: underline;
}

.crumb-sep,
.crumb-current {
  color: var(--color-muted);
}

.head-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.9fr);
  gap: var(--space-5);
  align-items: stretch;
}

.hero-main,
.hero-side,
.summary-card,
.fact-card,
comparison-card,
.detail-main,
.detail-side,
.info-box,
.retention-card,
.inspection-card,
.related-card {
  min-width: 0;
}

.hero-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fbfcfb;
}

.hero-side {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: var(--space-4);
}

.summary-card {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
}

.summary-title {
  margin: 0 0 var(--space-3) 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--color-brand-900);
}

.hero-fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.fact-card {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-brand-200);
}

.fact-title {
  margin: 0 0 var(--space-2) 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--color-brand-900);
}

.fact-text {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.head-section {
  padding: var(--space-7);
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.section-heading {
  margin: 0;
  font-family: Fraunces, Georgia, serif;
  font-size: 30px;
  line-height: 1.18;
  color: var(--color-brand-900);
}

.section-paragraph {
  margin: 0;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.8;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-2);
}

.comparison-card {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fbfcfb;
}

.comparison-title {
  margin: 0 0 var(--space-3) 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--color-brand-900);
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: var(--space-5);
}

.detail-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
}

.detail-side {
  display: flex;
}

.info-box {
  width: 100%;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fbfcfb;
}

.info-title {
  margin: 0 0 var(--space-3) 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--color-brand-900);
}

.retention-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-2);
}

.retention-card {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
}

.retention-title {
  margin: 0 0 var(--space-2) 0;
  font-size: 17px;
  font-weight: 900;
  color: var(--color-brand-900);
  line-height: 1.35;
}

.retention-text {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.inspection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-2);
}

.inspection-card {
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fbfcfb;
}

.inspection-title {
  margin: 0 0 var(--space-2) 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--color-brand-900);
}

.inspection-text {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-2);
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
  text-decoration: none;
}

.related-card:hover {
  border-color: var(--color-brand-900);
  transform: translateY(-1px);
}

.related-title {
  margin: 0;
  font-size: 17px;
  font-weight: 900;
  color: var(--color-brand-900);
}

.related-text {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.65;
}

.dense-list {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.nav-link.is-active {
  color: var(--color-brand-900);
  background: var(--color-brand-200);
}

.mobile-nav-link.is-active {
  background: var(--color-brand-200);
  border-color: var(--color-brand-200);
  color: var(--color-brand-900);
}

@media (max-width: 1180px) {
  .hero-fact-grid,
  .retention-grid,
  .inspection-grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .head-hero-grid,
  .comparison-grid,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .hero-side {
    grid-template-rows: auto;
  }

  .retention-grid,
  .inspection-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .head-hero,
  .head-section {
    padding: var(--space-6);
  }

  .section-heading {
    font-size: 26px;
  }

  .hero-fact-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .hero-main,
  .summary-card,
  .fact-card,
  .comparison-card,
  .detail-main,
  .info-box,
  .retention-card,
  .inspection-card,
  .related-card {
    padding: var(--space-4);
  }
}