/* Folding panel transition */
.fold-stage {
  display: grid;
  min-height: 76vh;
  grid-template-columns: minmax(280px, 0.72fr) minmax(320px, 1fr);
  gap: clamp(24px, 6vw, 78px);
  align-items: center;
  padding: 32px max(16px, calc((100vw - 1180px) / 2));
  perspective: 1200px;
}

.fold-copy {
  position: relative;
  z-index: 2;
}

.fold-board {
  display: grid;
  min-height: min(64vh, 620px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  transform-style: preserve-3d;
}

.fold-panel {
  display: grid;
  align-content: end;
  min-height: 210px;
  border: 1px solid rgba(17, 19, 21, 0.14);
  border-radius: 8px;
  padding: clamp(18px, 4vw, 34px);
  background:
    radial-gradient(circle at 24% 20%, rgba(255, 255, 255, 0.42), transparent 28%),
    linear-gradient(145deg, var(--from), var(--to));
  box-shadow: var(--shadow);
  transform-origin: var(--origin);
  backface-visibility: hidden;
}

.fold-panel h2 {
  max-width: 8ch;
}

@media (max-width: 820px) {
  .fold-stage {
    grid-template-columns: 1fr;
  }

  .fold-board {
    min-height: 48vh;
  }
}