@charset "utf-8";
.carousel-wrap {
  aspect-ratio: 16 / 7;
  max-width: 1000px;
  min-height: 670px;
  margin: 0 auto 50px;
}

.carousel {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.carousel-item {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 2s ease; 
}

.carousel-item.is-active {
  opacity: 1;
  z-index: 1;
}

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

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 18px;
  z-index: 2;
}

.carousel-btn.prev { left: 10px; }
.carousel-btn.next { right: 10px; }

.carousel-btn {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.carousel:hover .carousel-btn {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 768px) {
  .carousel-wrap {
    aspect-ratio: 4 / 3;
    min-height: auto; /* ★ これが重要 */
  }
}