discourse/app/assets/stylesheets/common/form-kit/_control-radio-group.scss

.form-kit__radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.75em;

  &-title {
    display: flex;
    align-items: center;
    gap: 0.25em;
    margin: 0;
    font-size: var(--font-down-1-rem);
    color: var(--primary-high);
  }
}