#loading {
      position: fixed;
      z-index: 9999;
      top: 0; left: 0; right: 0; bottom: 0;
      width: 100vw;
      height: 100vh;
      background: #000;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      transition: opacity 0.6s;
    }
    #loading.loaded {
      opacity: 0;
      pointer-events: none;
    }

/* 枠のサイズを決める（ここを好きなサイズに） */
.spinner-box {
  width: 440px;
  height: 220px;
  overflow: hidden;
}


/* 画像は枠いっぱいに広げ、contain で収める */
.spinner-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}


    /* 1文字ずつアニメーション */
.loading-letters {
  display: flex;
  font-size: 2rem;
  font-weight: bold;
  letter-spacing: 2px;
  margin-top: 20px;
}

    .loading-letters span {
      display: inline-block;
      transition: transform 0.3s;
      animation: bounce 1s infinite;
      /* 各文字にズラしを設定 */
    }
    .loading-letters span:nth-child(1) { animation-delay: 0.0s; }
    .loading-letters span:nth-child(2) { animation-delay: 0.1s; }
    .loading-letters span:nth-child(3) { animation-delay: 0.2s; }
    .loading-letters span:nth-child(4) { animation-delay: 0.3s; }
    .loading-letters span:nth-child(5) { animation-delay: 0.4s; }
    .loading-letters span:nth-child(6) { animation-delay: 0.5s; }
    .loading-letters span:nth-child(7) { animation-delay: 0.6s; }
    .loading-letters span:nth-child(8) { animation-delay: 0.7s; }

    @keyframes bounce {
      0%   { transform: translateY(0);}
      15%  { transform: translateY(-18px);}
      30%  { transform: translateY(0);}
      100% { transform: translateY(0);}
    }
    /* コンテンツ見せるようになったら */
    #content {
      display: none;
    }
    #content.show {
      display: block;
    }