main {
  background-color: #E6E6E6;
}

.mv {
  position: relative;
  overflow: hidden;
}
.mv__bg {
  height: 320px;
  position: relative;
}
.mv__bg::after {
  content: "";
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.2);
  position: absolute;
  top: 0;
  left: 0;
}
.mv__bg-slider {
  height: 100%;
}
.mv__bg picture, .mv__bg img {
  display: revert;
}
.mv__bg img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
  object-fit: cover;
}
.mv__box {
  display: grid;
  gap: 24px;
  padding: 64px 5% 0;
}
.mv__box-head {
  display: grid;
  align-items: center;
  gap: 24px;
}
.mv__box-logo {
  width: 135px;
}
.mv__box-ttl {
  font-size: 1.375rem;
  font-weight: 500;
  color: #333333;
}
.mv__box-ttl span {
  display: block;
  font-family: "Geist", sans-serif;
  font-size: 1.125rem;
  font-weight: 300;
  color: #333333;
}
.mv__box-txt {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.75;
  color: #333333;
}

.feature__img {
  position: relative;
}
.feature__img-base {
  position: relative;
}
.feature__img-item {
  opacity: 0;
  position: absolute;
  inset: 0;
}
.feature__img-item.is-item01 {
  animation: fadein01 4s ease-in-out infinite;
}
.feature__img-item.is-item02 {
  animation: translate01 4s ease-in-out infinite;
}
.feature__img-item.is-item03 {
  animation: fadein02 4s ease-in-out infinite;
}
.feature__img-item.is-item04 {
  animation: Scale02 4s ease-in-out infinite;
}

@keyframes fadein01 {
  0% {
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes translate01 {
  0% {
    opacity: 0;
    translate: 0 3%;
  }
  25% {
    opacity: 0;
    translate: 0 3%;
  }
  50% {
    opacity: 1;
    translate: 0 0;
  }
  100% {
    opacity: 1;
    translate: 0 0;
  }
}
@keyframes fadein02 {
  0% {
    opacity: 0;
  }
  45% {
    opacity: 0;
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes Scale02 {
  0% {
    scale: 0.8;
    opacity: 0;
  }
  65% {
    scale: 0.8;
    opacity: 0;
  }
  90% {
    scale: 1;
    opacity: 1;
  }
  100% {
    scale: 1;
    opacity: 1;
  }
}
@media screen and (min-width: 768px) {
  .mv {
    height: calc(100dvh - 93px);
  }
  .mv__bg {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
  }
  .mv__bg::after {
    display: none;
  }
  .mv__contents {
    position: absolute;
    inset: 0;
    z-index: 1;
  }
  .mv__box {
    display: flex;
    flex-direction: column;
    width: 46%;
    height: 100%;
    padding: 80px 40px 60px 40px;
    background: linear-gradient(to bottom, white 0%, rgba(128, 128, 128, 0.5019607843) 100%);
    backdrop-filter: blur(15px);
    position: absolute;
    top: 0;
    right: 0;
  }
}
@media (min-width: 1160px) {
  .mv {
    height: calc(100dvh - 157px);
  }
  .mv__box {
    width: 545px;
    padding: 80px 80px 80px 60px;
  }
  .mv__box-head {
    grid-template-columns: auto 1fr;
  }
}