body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

button {
  display: inline-block;
  position: absolute;
  border: none;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0);
  z-index: 20;
}
.menu {
  position: absolute;
  opacity: 0;
  transform: translateY(-30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  z-index: 0;
}

.menu.show {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  z-index: 99;
}

.scroll-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
}

.section {
  flex: none;
  height: 100vh;
  width: 100%;
  scroll-snap-align: start;
  position: relative;
}

.section img {
  width: 100vw;
}

.header-img {
  position: absolute;
  z-index: 15;
}

.body-img {
  height: 100vh;
  object-fit: cover;
  z-index: 5;
}

#pc-button-contact {
  left: 77.5vw;
  width: 6vw;
}
#pc-button-about {
  left: 67.3vw;
  width: 6.7vw;
}

#mobile-button-menu {
  left: 89vw;
  width: 7.5vw;
  transition: background-color 0.3s ease;
}

#image-menu {
  visibility: hidden;
  right: 5px;
  /* width: 81px; */
  width: 25%;
  /* left: 70vw; */
  /* width: 162px; */
  padding: 0px;
}

#image-menu img {
  width: 100%;
}

#image-arrow {
  position: absolute;
  left: 42.5%;
  width: 15%;
  bottom: 20px;
  padding: 0px;
  z-index: 20;
}

#image-arrow img {
  width: 100%;
}

#mobile-button-about {
  top: 0;
}
#mobile-button-contact {
  top: 50%;
}

.mobile-menu-item-button {
  left: 0;
  width: 100%;
  height: 49%;
  border: none;
  transition: background-color 0.3s ease;
  cursor: pointer;
}

#video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 10;
  pointer-events: none;
  overflow: hidden;
}

#background-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hover-button::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 6%;
  background-color: rgb(140, 210, 57, 0.9); /* #8cd239 */
  transition: all 0.3s ease;
  transform: translateX(-50%);
}
.hover-button:hover::after {
  width: 100%;
}

/* pc */
@media (min-width: 769px) {
  .mobile-button {
    display: none;
  }
  .pc-button {
    display: inline-block;
  }
  .index-view-picture {
    display: inline-block;
  }
  #image-menu {
    display: none;
  }
  #image-arrow {
    display: none;
  }
}

/* mobile */
@media (max-width: 768px) {
  .mobile-button {
    display: inline-block;
  }
  .pc-button {
    display: none;
  }
  .index-view-picture {
    display: none;
  }
  #image-menu {
    display: inline-block;
  }
  #image-arrow {
    display: inline-block;
  }
}

.carousel {
  position: relative;
  width: 100%;
  max-width: 800px;
  overflow: hidden;
  margin: auto;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s ease-in-out;
  will-change: transform;
}

.carousel-slide {
  min-width: 100%;
}

.carousel-slide img {
  width: 100%;
  display: block;
}