Vertical-to-Horizontal Drive

<!-- Vertical scroll of the top pane drives horizontal pan below,
     via a named scroll-timeline-name + timeline-scope pairing -->
<div class="nuda-sd2-hdrive__scroller">…</div>
<div class="nuda-sd2-hdrive__track">
  <div class="nuda-sd2-hdrive__row">
    <span class="nuda-sd2-hdrive__chip">01</span>
    <span class="nuda-sd2-hdrive__chip">02</span>
    <span class="nuda-sd2-hdrive__chip">03</span>
  </div>
</div>

.nuda-sd2-hdrive {
  height: 160px;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  overflow: hidden;
  background: #09090b;
  timeline-scope: --sd2hdrive;
}

.nuda-sd2-hdrive__scroller {
  flex: 1;
  overflow-y: auto;
  scroll-timeline-name: --sd2hdrive;
  scroll-timeline-axis: block;
  padding: .6rem;
}

.nuda-sd2-hdrive__spacer {
  height: 70px;
}

.nuda-sd2-hdrive__hint {
  margin: 0;
  text-align: center;
  color: #52525b;
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.nuda-sd2-hdrive__track {
  height: 52px;
  flex: 0 0 auto;
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
}

.nuda-sd2-hdrive__row {
  display: flex;
  gap: .5rem;
  padding: 0 .6rem;
  animation: nuda-sd2-hdrive-pan linear;
  animation-timeline: --sd2hdrive;
}

.nuda-sd2-hdrive__chip {
  flex: 0 0 auto;
  width: 40px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(228,255,84,.08);
  border: 1px solid rgba(228,255,84,.2);
  color: #e4ff54;
  font-size: .7rem;
  font-weight: 700;
}

@keyframes nuda-sd2-hdrive-pan {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-160px);
  }
}

@supports not (animation-timeline:scroll()) {
  .nuda-sd2-hdrive__row {
    transform: translateX(-80px);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-sd2-hdrive__row {
    animation: none;
    animation-timeline: none;
    transform: translateX(0);
  }
}