.certificates {
  padding: 1.8rem 0 2.8rem;
  background:
    linear-gradient(180deg, rgba(236, 240, 246, 0.65), rgba(248, 250, 253, 0.9)),
    repeating-linear-gradient(135deg, rgba(98, 112, 132, 0.04) 0 8px, rgba(255, 255, 255, 0.04) 8px 16px);
}

.certificate-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.certificate-card {
  background: linear-gradient(165deg, #eef2f8 0%, #ffffff 55%, #edf1f7 100%);
  border-radius: 12px;
  border: 1px solid #c4cfdf;
  max-width: 430px;
  width: 100%;
  margin-inline: auto;
  padding: 0.65rem;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    0 8px 22px rgba(28, 43, 67, 0.12);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.certificate-card:hover {
  transform: translateY(-3px);
  border-color: #9caec8;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.94),
    0 14px 30px rgba(30, 47, 74, 0.2);
}

.certificate-card img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 560px;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid #d2dae6;
}

.certificate-detail {
  margin: 0.7rem 0 0;
  padding-top: 0.65rem;
  border-top: 1px solid #d7e0ed;
  color: #2a3b56;
  font-size: 0.9rem;
  line-height: 1.45;
  font-weight: 600;
}

@media (max-width: 720px) {
  .certificate-grid {
    grid-template-columns: 1fr;
  }
}