body.is-intro-active {
  height: 100%;
  overflow: hidden;
}
#intro {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10000;
  width: 100%;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  background: url("../img/tile.png");
}
#intro.on {
  bottom: 100%;
  pointer-events: none;
  transition: bottom 0.5s ease;
}
#intro.is-hidden {
  display: none;
}
#intro a:hover {
  opacity: 1;
}
#intro-lead {
  display: block;
  margin: 0;
  padding: 10px 0;
  overflow: hidden;
  white-space: nowrap;
}
#intro-lead .txt {
  position: relative;
  display: inline-block;
  color: #fcff00;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
  animation: intro-blink 1s step-end infinite;
}
@keyframes intro-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
#intro-main {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  translate: -50% -50%;
}
#intro-main .intro-count {
  display: block;
  margin-bottom: 25px;
}
#intro-main .intro-count img {
  display: block;
  width: 222px;
  height: auto;
}
#intro-main .intro-main-wrap {
  position: relative;
  padding: 15px;
  background: url("../img/intro_wrap_game_bg.png");
}
#intro-main .intro-main-wrap > img {
  display: block;
  width: min(800px, calc(100vw - 60px));
  height: auto;
}
#intro-main .go-top {
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 40px;
  height: 30px;
  translate: -35px -25px;
}
#intro-main .go-top .fukidashi {
  position: absolute;
  bottom: 20px;
  left: -120px;
  opacity: 0;
  pointer-events: none;
}
#intro-main .go-top .fukidashi img {
  display: block;
  width: 138px;
  height: auto;
}
#intro-main .go-top:hover .fukidashi,
#intro-main .go-top:focus-visible .fukidashi {
  opacity: 1;
}
#intro-main .intro-enter {
  display: block;
  width: 197px;
  height: 44px;
  margin-top: 25px;
  background: url("../img/intro_enter.png") center/contain no-repeat;
}
#intro-main .intro-enter span {
  opacity: 0;
}
#intro-main .intro-enter:hover,
#intro-main .intro-enter:focus-visible {
  background-image: url("../img/intro_enter_r.png");
}
#fade {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
}
#fade.on {
  opacity: 0;
  pointer-events: none;
  transform: scale(5);
  transition: transform 1.2s cubic-bezier(1, 0.01, 1, -0.08), opacity 0.5s ease 1s;
}
#fade.is-hidden {
  display: none;
}
#fade::before,
#fade::after {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 2;
  width: 15%;
  background-color: #1c2121;
  content: "";
}
#fade::before { left: 0; }
#fade::after { right: 0; }
#fade .intro-fade__wrap {
  position: relative;
  z-index: 1;
  width: 70%;
}
#fade .intro-fade__wrap img {
  display: block;
  width: 100%;
  height: auto;
  transform: scale(1.02);
}
#fade .intro-fade__wrap::before,
#fade .intro-fade__wrap::after {
  position: absolute;
  right: 0;
  left: 0;
  z-index: 2;
  height: 100vh;
  background-color: #1c2121;
  content: "";
}
#fade .intro-fade__wrap::before { bottom: 100%; }
#fade .intro-fade__wrap::after { top: 100%; }
@media (max-width: 720px) {
  #intro-lead {
    padding: 2.5vw 0;
  }
  #intro-main .intro-count {
    margin-bottom: 5vw;
  }
  #intro-main .intro-count img {
    width: 50vw;
  }
  #intro-main .intro-main-wrap {
    padding: 1.7vw;
    background-size: cover;
  }
  #intro-main .intro-main-wrap > img {
    width: 96.6vw;
  }
  #intro-main .go-top {
    width: 5vw;
    height: 4vw;
    translate: -4vw -3vw;
  }
  #intro-main .go-top .fukidashi {
    bottom: 2vw;
    left: -18vw;
    opacity: 1;
  }
  #intro-main .go-top .fukidashi img {
    width: 20vw;
  }
  #intro-main .intro-enter {
    width: 50vw;
    height: 11vw;
    margin-top: 5vw;
  }
}