.wpcf7 .btc7-error {
  display: block;
  margin-top: 8px;
  padding: 7px 10px;
  border-left: 3px solid #b42318;
  border-radius: 3px;
  background: #fff4f2;
  color: #9b1c13;
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.wpcf7 .btc7-invalid { border-color: #b42318 !important; }
/* Avoid duplicate native and companion messages for the same field. */
.wpcf7 .wpcf7-form-control-wrap:has(.btc7-error) > .wpcf7-not-valid-tip { display: none; }