.lt__yt {
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 200px 0 200px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  font-size: 16px;
  color: #767676;
  line-height: 1.5;
  --yt-view: 1080px;
}
.lt__yt .yt__wrapper.--thumb {
  width: calc(100% - var(--yt-view));
}
.lt__yt .yt__wrapper.--view {
  width: var(--yt-view);
}
.lt__yt h2 {
  font-family: var(--marce);
  font-size: 50px;
  font-weight: 400;
  line-height: 1;
  color: #000;
  height: 3em;
}
.lt__yt .yt__thumb {
  height: 100%;
  max-height: 606px;
  margin-top: 3px;
  position: relative;
}
.lt__yt .yt__thumb .thumb__nav {
  position: absolute;
  bottom: 100%;
  left: 0;
  translate: 0 -1em;
  width: 80%;
  aspect-ratio: 127/12;
  background: url(../youtube_v2/img/swiper-nav.svg) center/contain no-repeat;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.lt__yt .yt__thumb .thumb__nav .nav__button {
  aspect-ratio: 17/12;
  height: 100%;
  cursor: pointer;
}
.lt__yt .yt__thumb .swiper {
  width: 90%;
  height: 100%;
  margin: 0;
}
.lt__yt .yt__thumb .swiper-slide {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
}
.lt__yt .yt__thumb .swiper-slide button {
  height: calc((100% - 30px) / 4) !important;
}
.lt__yt .yt__thumb .swiper-slide img {
  height: 100%;
}
.lt__yt .yt__thumb button {
  border: 0;
  background: none;
  opacity: 0.4;
  -webkit-filter: grayscale(1);
          filter: grayscale(1);
  -webkit-transition: 0.4s;
  transition: 0.4s;
}
.lt__yt .yt__thumb button.--active {
  opacity: 1;
  -webkit-filter: grayscale(0);
          filter: grayscale(0);
}
.lt__yt .yt__title {
  padding-bottom: 60px;
}
.lt__yt .yt__title h3 {
  font-size: 22px;
  font-weight: bold;
  color: #717171;
  line-height: 1;
  margin-bottom: 1em;
}
.lt__yt .yt__frame {
  padding-bottom: 17px;
}
.lt__yt iframe {
  display: block;
  width: 100%;
  aspect-ratio: 1337/752;
}

@media (max-width: 1500px) {
  .lt__yt {
    --yt-view: 847px;
    max-width: 1100px;
  }
  .lt__yt h2 {
    font-size: 40px;
    height: 3.75em;
  }
  .lt__yt .yt__thumb {
    max-height: 475px;
  }
}