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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.dr {
  box-sizing: border-box;
  display: grid;
  justify-items: center;
  gap: 12px;
  width: min(208px, 66vw);
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.dr__box {
  --h: 40px;
  position: relative;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  width: 100%;
  height: calc(var(--h) * 3);
}

.dr__band {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  z-index: 1;
  height: var(--h);
  border-radius: 12px;
  background-color: rgba(23, 20, 26, 0.1);
  box-shadow: inset 0 0 0 2px #17141a;
  pointer-events: none;
  transform: translateY(-50%);
}

.dr__col {
  position: relative;
  height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
  touch-action: pan-y;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 30%, #000 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 30%, #000 70%, transparent 100%);
}

.dr__col::-webkit-scrollbar {
  display: none;
}

.dr__col:focus-visible {
  outline: 3px solid #17141a;
  outline-offset: 2px;
}

.dr__track {
  padding-block: var(--h);
}

.dr__cell {
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--h);
  scroll-snap-align: center;
  font-size: clamp(15px, 4.4vw, 19px);
  line-height: 1;
  font-weight: 800;
  color: #17141a;
}

.dr__out {
  position: relative;
  margin: 0;
  width: 100%;
  height: 20px;
  font-size: clamp(12px, 3.4vw, 14px);
  line-height: 20px;
  font-weight: 700;
  color: #17141a;
}

.dr__ov {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  text-align: center;
  white-space: nowrap;
  opacity: 0;
}

.dr__ov[data-live] {
  opacity: 1;
}

.dr.is-demo .dr__col {
  scroll-snap-type: none;
}

.dr.is-demo .dr__track {
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

.dr.is-demo .dr__track[data-track=h] {
  animation-name: dr-h;
}

.dr.is-demo .dr__track[data-track=m] {
  animation-name: dr-m;
}

@keyframes dr-h {
  0% {
    transform: translateY(0);
  }
  8% {
    transform: translateY(0);
  }
  34% {
    transform: translateY(calc(var(--h) * -2));
  }
  76% {
    transform: translateY(calc(var(--h) * -2));
  }
  88% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(0);
  }
}
@keyframes dr-m {
  0% {
    transform: translateY(0);
  }
  8% {
    transform: translateY(0);
  }
  34% {
    transform: translateY(calc(var(--h) * -1));
  }
  42% {
    transform: translateY(calc(var(--h) * -1));
  }
  68% {
    transform: translateY(calc(var(--h) * -3));
  }
  76% {
    transform: translateY(calc(var(--h) * -3));
  }
  88% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(0);
  }
}
.dr.is-demo .dr__ov {
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}

.dr.is-demo .dr__ov[data-live] {
  animation-name: dr-v1;
}

.dr.is-demo .dr__ov[data-v="2"] {
  animation-name: dr-v2;
}

.dr.is-demo .dr__ov[data-v="3"] {
  animation-name: dr-v3;
}

@keyframes dr-v1 {
  0% {
    opacity: 1;
  }
  22% {
    opacity: 0;
  }
  82% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes dr-v2 {
  0% {
    opacity: 0;
  }
  22% {
    opacity: 1;
  }
  56% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes dr-v3 {
  0% {
    opacity: 0;
  }
  56% {
    opacity: 1;
  }
  82% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@media (max-width: 340px) {
  .dr {
    gap: 8px;
  }
  .dr__box {
    --h: 32px;
  }
  .dr__out {
    height: 18px;
    line-height: 18px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .dr.is-demo .dr__track,
  .dr.is-demo .dr__ov {
    animation: none !important;
  }
  .dr.is-demo .dr__ov[data-live] {
    opacity: 1;
  }
}