#top-mv {
  position: relative;
  z-index: 1;
  padding: 0;
}
#top-mv::after {
  position: absolute;
  inset: 0 0 auto;
  z-index: 2;
  display: block;
  width: 100%;
  height: 323px;
  content: "";
  background-image: -webkit-gradient(linear, left bottom, left top, from(transparent), color-stop(47%, rgba(255, 255, 255, 0.4666666667)), to(#678ba6));
  background-image: -webkit-linear-gradient(bottom, transparent 0%, rgba(255, 255, 255, 0.4666666667) 47%, #678ba6 100%);
  background-image: linear-gradient(0deg, transparent 0%, rgba(255, 255, 255, 0.4666666667) 47%, #678ba6 100%);
  mix-blend-mode: multiply;
}
@media (width <= 960px) {
  #top-mv::after {
    height: 134px;
  }
}
#top-mv .top-mv__video {
  display: block;
  width: 100%;
  background-image: url("../move/kv.png");
  background-repeat: no-repeat;
  background-position: top center;
  background-size: 100% 100%;
}
@media (width <= 900px) {
  #top-mv .top-mv__video {
    background-image: url("../move/kv-sp.png");
  }
}