/* Increase only the digits; keep the existing four-column button geometry. */
.numbers button {
  height: 50px;
  min-height: 50px;
  padding-block: 1px;
  font-size: 36px;
  line-height: 1;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}
@media (max-width: 430px) {
  .numbers button {
    height: 34px;
    min-height: 34px;
    font-size: 28px;
  }
}
.number-grid button {
  height: 48px;
  min-height: 48px;
  padding-block: 2px;
  font-size: 34px;
  line-height: 1;
  font-weight: 850;
  font-variant-numeric: tabular-nums;
}