html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.gm-scene {
  position: relative;
  box-sizing: border-box;
  width: min(340px, 90vw);
  aspect-ratio: 340/190;
  display: flex;
  justify-content: center;
  padding-top: 16px;
}

.gm-check {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.gm-trigger {
  position: relative;
  z-index: 0;
  align-self: flex-start;
  box-sizing: border-box;
  padding: 8px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff7e6;
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
  cursor: pointer;
}

.gm-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
}

.gm-modal {
  position: absolute;
  inset: 0;
  margin: auto;
  z-index: 2;
  box-sizing: border-box;
  width: min(210px, 74%);
  height: fit-content;
  padding: 20px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.38);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: #fff7e6;
  font: 600 12px/1.4 -apple-system, "Segoe UI", sans-serif;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 600ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
}

.gm-modal__title {
  font-size: 14px;
  font-weight: 700;
}

.gm-modal__desc {
  opacity: 0.8;
  font-weight: 500;
}

.gm-check:checked ~ .gm-overlay {
  opacity: 1;
}

.gm-check:checked ~ .gm-modal {
  opacity: 1;
  transform: scale(1);
}

@keyframes gm-overlay-loop {
  0%, 12% {
    opacity: 0;
  }
  35%, 78% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes gm-modal-loop {
  0%, 12% {
    opacity: 0;
    transform: scale(0.85);
  }
  35%, 78% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(0.85);
  }
}
.gm-scene.is-demo .gm-overlay {
  animation: gm-overlay-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.gm-scene.is-demo .gm-modal {
  animation: gm-modal-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .gm-overlay, .gm-modal {
    transition: none;
  }
  .gm-scene.is-demo .gm-overlay,
  .gm-scene.is-demo .gm-modal {
    animation: none !important;
  }
}