.opening-active {
  overflow: hidden;
}

.openingOverlay {
  position: fixed;
  inset: 0;
  z-index: 5000;
  background: var(--page-bg, #FDF6EC);
  min-height: 100vh;
  display: grid;
  place-items: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 800ms cubic-bezier(.22,.61,.36,1), visibility 0s linear 800ms;
}

.openingOverlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.openingStage {
  width: min(100vmin, 600px);
  height: min(160vmin, 1000px);
  border-radius: 10px;
  background: var(--page-bg, #FDF6EC);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .openingStage {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }
}

.logoWrap {
  position: absolute;
  left: 50%;
  top: 50%;
  translate: -50% -50%;
  width: min(80vmin, 380px);
  aspect-ratio: 1 / 1;
  opacity: 0;
  transform: translateY(12px) scale(0.92);
  filter: blur(5px);
  z-index: 1;
}

.logoCircle {
  position: absolute;
  inset: 0;
  border-radius: 0;
  background: transparent;
  display: grid;
  place-items: center;
  overflow: visible;
  transform: scale(1);
}

.logoImg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

@media (min-width: 768px) {
  .logoWrap {
    width: min(46vmin, 420px);
  }
}

.copy {
  position: absolute;
  left: 50%;
  translate: -50% 0;
  margin: 0;
  color: rgba(0, 0, 0, 0.85);
  width: min(88vw, 32ch);
  font-size: clamp(14px, 4vw, 18px);
  line-height: 1.8;
  letter-spacing: 0.12em;
  white-space: normal;
  text-align: center;
  opacity: 0;
  transform: translateY(12px);
  filter: blur(5px);
  transition:
    opacity 1320ms cubic-bezier(.22,.61,.36,1),
    transform 1470ms cubic-bezier(.22,.61,.36,1),
    filter 1470ms cubic-bezier(.22,.61,.36,1);
  z-index: 10;
}

.copy--pc { display: none; }
.copy--sp { display: block; }
.copy--top { top: 15vh; }
.copy--bottom { bottom: 14vh; }

@media (min-width: 768px) {
  .copy {
    width: auto;
    max-width: min(80vw, 34ch);
    font-size: clamp(26px, 2.2vw, 38px);
    line-height: 1.55;
    letter-spacing: 0.16em;
    white-space: nowrap;
  }

  .copy--pc { display: block; }
  .copy--sp { display: none; }
  .copy--top { top: 12vh; }
  .copy--bottom { bottom: 12vh; }
}

@media (max-height: 700px) {
  .copy {
    font-size: clamp(18px, 4.8vw, 22px);
  }

  .copy--top { top: 14vh; }
  .copy--bottom { bottom: 13vh; }
}

.openingOverlay.is-show-logo .logoWrap {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
  transition:
    opacity 1320ms cubic-bezier(.22,.61,.36,1),
    transform 1470ms cubic-bezier(.22,.61,.36,1),
    filter 1470ms cubic-bezier(.22,.61,.36,1);
}

.openingOverlay.is-step1 .copy--top,
.openingOverlay.is-step2 .copy--top {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.openingOverlay.is-step2 .copy--bottom {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.openingOverlay.is-exit .copy,
.openingOverlay.is-exit .logoWrap {
  opacity: 0;
  transform: translateY(8px) scale(0.98);
  filter: blur(6px);
  transition:
    opacity 1200ms cubic-bezier(.22,.61,.36,1),
    transform 1200ms cubic-bezier(.22,.61,.36,1),
    filter 1200ms cubic-bezier(.22,.61,.36,1);
}

.beat1s {
  animation: beat1s 1000ms cubic-bezier(.2,.9,.2,1) 1;
}

@keyframes beat1s {
  0%   { transform: scale(1); }
  12%  { transform: scale(1.24); }
  30%  { transform: scale(0.97); }
  48%  { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .beat1s { animation: none; }
  .copy { transition: none; }
}