html {
    background: #ffffff;
    height: 100%;
}
body {
    height: 100%;
    margin: 0;
    font-family: system-ui,-apple-system,Segoe UI,Roboto,Noto Sans JP,sans-serif;
    color: #111111;
}
#mainImage {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
#site {
    position: fixed;
    inset: 0;
    z-index: 9000;
    visibility: hidden;
}
#reveal {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 9100;
    pointer-events: none;
    opacity: 0;
}

/* ▼ ロゴ拡大は JS で制御するので、ここでは初期値だけにする ▼ */
#reveal #logoScale {
    transform-box: fill-box;
    transform-origin: 50% 50%;
    transform: scale(0.03);
}
/* pop-start / pop-in / drift はもう使わないので削除
#reveal #logoScale.pop-start { ... }
#reveal #logoScale.pop-in { ... }
#reveal #logoScale.drift { ... }
@keyframes logoDrift { ... }
*/

#logoBox {
    position: fixed;
    left: 50%;
    top: 50%;
    width: 600px;
    max-width: 90%;
    transform: translate(-50%,-50%) scale(0.82);
    transform-origin: center center;
    overflow: hidden;
    z-index: 9200;
    background: #ffffff;
}
#logo {
    width: 100%;
    display: block;
}
#logoBox::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: #ffffff;
    transform: translateX(0%);
}
body.play #logoBox {
    animation: kScale 2.0s ease forwards;
}
body.play #logoBox::after {
    animation: kReveal 1.0s ease forwards;
}
@keyframes kReveal {
    0% { transform: translateX(0%); }
    100% { transform: translateX(100%); }
}
@keyframes kScale {
    0% { transform: translate(-50%,-50%) scale(0.82); }
    100% { transform: translate(-50%,-50%) scale(1.06); }
}

.overview {
  overflow: hidden;
  position: relative;
}
.overview::before {
  animation: img-wrap 2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  background: #fff;
  content: '';
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 1;
}
@keyframes img-wrap {
  100% {
    transform: translateX(100%);
  }
}