/* スマホ：子グループを折りたたみ表示 */
@media screen and (max-width: 767px) {
  .fs-c-subgroupList__item.is-hidden-subgroup {
    display: none !important;
  }

  .subgroup-toggle-button {
    display: block;
    width: 90%;
    max-width: 320px;
    margin: 16px auto 24px;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 999px;
    background: #fff;
    color: #333;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
  }
}

/* タブレット以上ではボタン非表示 */
@media screen and (min-width: 768px) {
  .subgroup-toggle-button {
    display: none !important;
  }
}