.diagram {
  margin: 1rem 0 1.75rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  overflow-x: auto;
}

.diagram svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 320px;
  max-width: 640px;
  margin: 0 auto;
}

.diagram-caption {
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.diagram-title {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
}