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

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

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

.systems-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--color-brand-200);
  color: var(--color-brand-900);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.systems-title {
  margin: 0;
  font-family: Fraunces, Georgia, serif;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.08;
  color: var(--color-brand-900);
  max-width: none;
}

.systems-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(300px, 0.92fr);
  gap: var(--space-5);
  align-items: start;
}

.systems-intro-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.systems-intro-side {
  min-width: 0;
}

.systems-lead {
  margin: 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.85;
}

.cue-panel {
  padding: var(--space-5);
  box-shadow: none;
}

.cue-title {
  margin: 0 0 var(--space-3) 0;
  color: var(--color-brand-900);
  font-size: 20px;
  font-weight: 900;
}

.cue-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.cue-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.cue-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.cue-label {
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cue-copy {
  color: var(--color-ink);
  font-size: 14px;
  line-height: 1.7;
  font-weight: 700;
}

.systems-category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.category-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #ffffff;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-soft);
}

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

.category-title {
  margin: 0;
  color: var(--color-ink);
  font-size: 22px;
  font-weight: 900;
  line-height: 1.22;
}

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

.systems-section {
  padding-top: var(--space-6);
}

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

.divergence-card {
  padding: var(--space-5);
  box-shadow: none;
}

.divergence-card-wide {
  grid-column: 1 / -1;
}

.divergence-title {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-brand-900);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.3;
}

.divergence-copy {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.reference-map {
  display: grid;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #ffffff;
}

.reference-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1.7fr);
}

.reference-row + .reference-row {
  border-top: 1px solid var(--color-border);
}

.reference-label {
  padding: 20px 18px;
  background: var(--color-brand-200);
  color: var(--color-brand-900);
  font-size: 14px;
  font-weight: 900;
  line-height: 1.4;
}

.reference-body {
  padding: 20px 18px;
}

.reference-copy {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.78;
}

.text-link {
  color: var(--color-brand-900);
  font-weight: 800;
  text-decoration: none;
}

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

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

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

.language-title {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-brand-900);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.3;
}

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

.footer-links-wrap {
  flex-wrap: wrap;
}

@media (max-width: 1120px) {
  .systems-intro-grid,
  .divergence-grid,
  .language-grid {
    grid-template-columns: 1fr;
  }

  .divergence-card-wide {
    grid-column: auto;
  }
}

@media (max-width: 860px) {
  .reference-map {
    overflow-x: auto;
  }

  .reference-row {
    min-width: 760px;
  }
}

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

  .systems-title {
    font-size: 34px;
    line-height: 1.12;
  }

  .systems-lead {
    font-size: 15px;
    line-height: 1.8;
  }

  .systems-category-grid,
  .language-grid,
  .divergence-grid {
    grid-template-columns: 1fr;
  }
}