.news-main {
  padding: 2rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}

.news-heading {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  text-align: left;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.news-item {
  position: relative;
  aspect-ratio: 1 / 1; /* 正方形 */
  overflow: hidden;
}

.news-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 横長画像 */
.news-item.wide {
  grid-column: span 2;
  aspect-ratio: 2 / 0.98;
}

/* スマホ対応 */
@media screen and (max-width: 768px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-item.wide {
    grid-column: span 2;
    aspect-ratio: 2 / 1;
  }
}