product-form .product-form__option input {
  width: 1px;
  height: 1px;
  overflow: hidden;
  position: absolute;
  opacity: 0;
}

product-form .product-form__option input:checked + label {
  text-decoration: underline;
}

product-form .product-form__option input.disabled + label {
  opacity: 0.7;
}