/* BACK TO HOME リンク（ヘッダー内に配置） */
  .back-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    color: #f9fafb;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s, color 0.3s, transform 0.2s;
    font-weight: 300;
  }
  
  .back-link:hover {
    opacity: 1;
    color: #fff;
    transform: translateX(-3px);
  }

  .back-link__icon {
    font-size: 1rem;
    line-height: 1;
    vertical-align: middle;
  }

  .back-link__text {
    line-height: 1;
  }