/* Helix depth ribbon */
.helix-stage {
  display: grid;
  min-height: 74vh;
  grid-template-columns: minmax(280px, 0.64fr) minmax(320px, 1fr);
  gap: clamp(24px, 6vw, 80px);
  align-items: center;
  overflow: hidden;
  padding: 32px max(16px, calc((100vw - 1180px) / 2));
  perspective: 1300px;
}

.helix-copy {
  position: relative;
  z-index: 4;
}

.helix-lab {
  display: grid;
  min-height: clamp(440px, 58vw, 640px);
  place-items: center;
  perspective: 1200px;
}

.helix-track {
  position: relative;
  width: min(84vw, 620px);
  height: min(86vw, 620px);
  transform-style: preserve-3d;
  will-change: transform;
}

.helix-card {
  position: absolute;
  inset: 50% auto auto 50%;
  display: grid;
  width: clamp(150px, 22vw, 230px);
  min-height: clamp(118px, 18vw, 180px);
  align-content: space-between;
  border: 1px solid rgba(17, 19, 21, 0.16);
  border-radius: 8px;
  padding: 18px;
  background: var(--tone);
  box-shadow: 0 28px 72px rgba(17, 19, 21, 0.2);
  color: #111315;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.helix-card::before {
  position: absolute;
  inset: 10px;
  content: "";
  border: 1px solid rgba(17, 19, 21, 0.12);
  border-radius: 6px;
  transform: translateZ(-30px);
}

.helix-card small {
  color: rgba(17, 19, 21, 0.58);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.helix-card h2 {
  margin: 0;
  font-size: clamp(26px, 4.4vw, 54px);
  line-height: 0.9;
}

@media (max-width: 840px) {
  .helix-stage {
    grid-template-columns: 1fr;
  }

  .helix-track {
    width: min(88vw, 430px);
    height: 430px;
  }

  .helix-card {
    width: min(66vw, 210px);
  }
}