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

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

.nso {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.nso__display {
  display: flex;
  background: #17141a;
  border-radius: 16px;
  padding: 8px 12px;
  cursor: pointer;
}

.nso__display:focus-visible {
  outline: 2px solid #4cd4a6;
  outline-offset: 2px;
}

.nso__col {
  width: 20px;
  height: 26px;
  overflow: hidden;
  position: relative;
}

.nso__strip {
  display: flex;
  flex-direction: column;
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nso__strip span {
  height: 26px;
  line-height: 26px;
  text-align: center;
  font-weight: 700;
  font-size: 18px;
  color: #4cd4a6;
  font-variant-numeric: tabular-nums;
}

.nso__row {
  display: flex;
  gap: 8px;
}

.nso__btn {
  appearance: none;
  border: 0;
  border-radius: 12px;
  width: 32px;
  height: 32px;
  background: rgba(76, 212, 166, 0.18);
  color: #17141a;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
}

.nso__btn:focus-visible {
  outline: 2px solid #4cd4a6;
  outline-offset: 2px;
}

.nso__label {
  font-size: 12px;
  color: #17141a;
}

@media (max-width: 340px) {
  .nso__col {
    width: 18px;
  }
  .nso__strip span {
    font-size: 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .nso__strip {
    transition: none;
  }
}