.certified-section {
  margin: 1rem auto;
  padding: 1rem;
  max-width: 1000px;
}

.certified-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  text-align: center;
}

.certified-description {
  display: block;
  max-width: 450px;
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: left;
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.8;
}

.certified-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  justify-content: center;
  align-items: center;
}

.certified-item img {
  max-height: 100px;
  width: auto;
  height: auto;
  transition: transform 0.3s ease;
}

.certified-item img:hover {
  transform: scale(1.05);
}

/* スマホ対応 */
@media screen and (max-width: 768px) {
  .certified-description {
    font-size: clamp(0.7rem, 2.5vw, 1rem);
    max-width: 95%;
    line-height: 1.6;
  }

  .certified-item img {
    max-height: 80px;
  }

  .certified-list {
    gap: 2rem;
  }
}