:root {
  --cluster-brand-dark: #0f172a;
  --cluster-brand-primary: #10b981;
  --cluster-border: #e2e8f0;
  --cluster-text: #334155;
}

.cluster-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--cluster-border);
  border-radius: 1rem;
  background: #ffffff;
  box-shadow: 0 15px 30px -24px rgba(15, 23, 42, 0.42);
}

.cluster-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(130deg, rgba(16, 185, 129, 0.07), transparent 50%);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.cluster-frame:hover::after {
  opacity: 1;
}

.cluster-frame__title {
  color: var(--cluster-brand-dark);
}

.cluster-frame__subtitle {
  color: #64748b;
  max-width: 72ch;
}

.cluster-links-grid {
  display: grid;
  gap: 0.9rem;
}

.cluster-link-card {
  border: 1px solid var(--cluster-border);
  border-radius: 0.85rem;
  background: #f8fafc;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.cluster-link-card:hover {
  border-color: #6ee7b7;
  background: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 14px 26px -24px rgba(16, 185, 129, 0.8);
}

.cluster-link-card__title {
  color: var(--cluster-brand-dark);
  text-decoration: none;
}

.cluster-link-card__title:hover {
  color: #047857;
}

.cluster-link-card__description {
  color: var(--cluster-text);
}

.cluster-link-card--resource {
  display: block;
  text-decoration: none;
}

.cluster-footer-legal {
  color: #94a3b8;
}

@media (max-width: 900px) {
  .cluster-links-grid {
    grid-template-columns: 1fr;
  }
}