.key-visual {
  margin: 0 0;
  background-color: #fff8f7;
  overflow: hidden;
}

.key-visual__container {
  position: relative;
  max-width: 1920px;
  aspect-ratio: 1920 / 732;
  margin: 0 auto;
  display: block;
  background-color: #fae9e6;
}

@media screen and (max-width: 991px) {
  .key-visual__container {
    aspect-ratio: 750 / 915;
  }
}

.key-visual__bg,
.key-visual__title,
.key-visual__images {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

.key-visual__bg {
  z-index: 1;
}

.key-visual__title {
  z-index: 3;
}

.key-visual__title-inner {
  position: relative;
  width: 100%;
}

.key-visual__btn-wrap {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 33.6%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}

@media screen and (max-width: 991px) {
  .key-visual__btn-wrap {
    width: 86%;
    bottom: 4%;
    gap: 8px;
  }
}

.key-visual__btn {
  width: 100%;
  display: block;
  border-radius: 17px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: ease 0.4s;
}

@media screen and (max-width: 991px) {
  .key-visual__btn {
    border-radius: 8px;
  }
}

.key-visual__btn:hover {
  transform: translateY(2px);
  box-shadow: none;
  opacity: 1;
}

.key-visual__btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.key-visual__images {
  z-index: 2;
}

/* KVアニメ */
/* --初期状態 */
.key-visual__bg,
.key-visual__title,
.key-visual__images {
  opacity: 0;
  transform: scale(0.92);
  transform-origin: 50% 50%;
  will-change: transform, opacity;
}

/* --bg/title：同時に出現 */
.key-visual.is-loaded .key-visual__bg,
.key-visual.is-loaded .key-visual__title {
  animation: kv-pop 1s ease-in-out both;
}

/* --images：遅れて出現 → その後ずっと浮遊 */
.key-visual__images.is-float {
  animation-name: kv-pop, kv-float;
  animation-duration: 1s, 3s;
  animation-timing-function: ease-in-out, ease-in-out;
  animation-delay: 0.45s, 1.55s;      /* 0.45 + 1.00 + 0.10 */
  animation-fill-mode: both, none;    /* popは止める、floatはループ */
  animation-iteration-count: 1, infinite;
}

@keyframes kv-pop {
  0%   { opacity: 0; transform: scale(0.92); }
  55%  { opacity: 1; transform: scale(1.06); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes kv-float {
  0%, 100% { transform: scale(1) translateY(0); }
  50%      { transform: scale(1) translateY(-2.5%); }
}