.ig-wrap {
    text-align: center;
  }
  .ig-wrap .ig-line {
      margin: 0;
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    line-height: 1.4;
    text-align:center;
  }
  .ig-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    padding: 1.05rem 1.4rem;
    border: 1px solid currentColor;
    background: transparent;
    color: inherit;
    text-decoration: none;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.25rem;
    letter-spacing: 0.12em;
    line-height: 1;
    transition: background 0.25s ease;
  }
  .ig-btn:hover,
  .ig-btn:focus-visible {
    background: color-mix(in srgb, currentColor 10%, transparent);
    outline: none;
  }
  .ig-btn svg {
    width: 1.15rem;
    height: 1.15rem;
    flex-shrink: 0;
  }
  .ig-btn {
      padding: 0.6rem 0.9rem;
      font-size: 1rem;
      border: 0.7px solid currentColor;
  }


.c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  gap: 0.85rem;
  padding: 0.6rem 0.9rem;
  border: 0.7px solid currentColor;
  background: transparent;
  color: inherit;
  text-decoration: none;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  letter-spacing: 0.12em;
  line-height: 1;
  transition: background 0.25s ease;
}

/* 隣のボタンと密着した際に、境界線の太さが重複するのを防ぐ */
.c-btn + .c-btn {
  margin-left: -0.7px;
}

.c-btn:hover,
.c-btn:focus-visible {
  background: color-mix(in srgb, currentColor 10%, transparent);
  outline: none;
}

/* アイコンとテキストの縦方向の芯を完全に統一 */
.c-btn svg {
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
  display: flex;
}

/* 和文・欧文フォントの固有の高さによるベースラインのバグを排除 */
.c-btn span {
  display: inline-block;
  line-height: 1;
}