.letter-card.accent-left {
  border-left: 6px solid var(--bs-primary);
  padding-left: 1.2rem;
}

.letter-card {
  background: #fff;
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  transition: transform .2s ease, box-shadow .2s ease;
  margin-bottom: 32px;
}

.letter-card.accent-left {
  border-left: 6px solid var(--bs-primary);
  padding-left: 1.2rem;
}