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);
}

.bc {
  width: min(100%, 360px);
}

.bc__pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.bc__cell {
  display: grid;
  gap: 12px;
  justify-items: center;
  min-width: 0;
}

.bc__btn {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  box-sizing: border-box;
  width: 100%;
  height: 72px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(120deg, #b9a0ff, #ff9ebb);
  color: #17141a;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  line-height: 20px;
  cursor: pointer;
}

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

.bc__btn.bc__on {
  background: linear-gradient(120deg, #4cd4a6, #6ec8ff);
}

.bc__layer {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(120deg, #4cd4a6, #6ec8ff);
  opacity: 0;
}

.bc__label {
  position: relative;
}

.bc__meta {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  line-height: 16px;
  color: rgba(23, 20, 26, 0.78);
}

.bc__tag {
  font-weight: 700;
  letter-spacing: 0.08em;
}

.bc__meta b {
  min-width: 4ch;
  font-variant-numeric: tabular-nums;
  color: #17141a;
}

@media (prefers-reduced-motion: reduce) {
  .bc__btn {
    transition: none;
  }
}