/* Three-phase cards: equal-height, low-contrast boxes */
.reveal .phase-cards.columns {
  display: flex;
  align-items: stretch;
  gap: 0.6em;
}

.reveal .phase-cards > .column {
  box-sizing: border-box;
  padding: 0.3em 0.7em 0.5em;
  background: rgba(58, 130, 122, 0.06);
  border: 1px solid rgba(58, 130, 122, 0.25);
  border-top: 4px solid rgba(58, 130, 122, 0.7);
  border-radius: 4px;
}

.reveal .phase-cards > .column h3 {
  margin-top: 0.2em;
}