/* === 全体レイアウト === */
    body {
      font-family: 'Helvetica Neue', sans-serif;
      background: #f8f8f8;
      margin: 0;
      padding: 20px;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
    }

    /* === カードボックス=== */
    .card {
      position: relative;
      background-color: white;
      padding: 2em;
      border-radius: 16px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
      max-width: 360px;
      width: 100%;
      text-align: center;
      overflow: hidden;
    }

    /* === 背景画像=== */
    .card::before {
      content: "";
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: url('../img/unnamed.jpg') no-repeat center center;
      background-size: cover;
      opacity: 0.08;
      border-radius: 16px;
      pointer-events: none;
      z-index: 0;
    }

    /* === カード内の要素を前面に表示 === */
    .card > * {
      position: relative;
      z-index: 1;
    }

    /* === ロゴ画像 === */
    .logo {
      width: 150px;
      height: 150px;
      border-radius: 16px;
      margin-bottom: 1em;
    }

    /* === タイトルテキスト === */
    h1 {
      font-size: 1.3rem;
      white-space: nowrap;
      margin: 0.5em 0;
    }

    /* === 説明文 === */
    p {
      color: #666;
      margin-bottom: 1.5em;
    }

    /* === PC用のQRコード横並びエリア === */
    .desktop-only {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 20px;
    }

    .qr-container {
      text-align: center;
      cursor: pointer;
    }

    .qr-code {
      width: 100px;
      height: 100px;
      border-radius: 12px;
      box-shadow: 0 5px 15px rgba(0,0,0,0.15);
      transition: transform 0.2s ease;
    }

    .qr-code:hover {
      transform: scale(1.05);
    }

    /* === スマホ用ストアバッジの横並びエリア === */
    .mobile-only {
      display: none; 
    }

    .store-buttons {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 12px;
      flex-wrap: nowrap;
      padding: 10px 0;
    }

    .store-badge {
      height: 40px;
      width: auto;
      display: block;
    }

    /* === 操作ガイドリンク === */
    .manual-link {
      margin-top: 1.5em;
    }

    /* === モーダル（QR拡大表示用） === */
    .modal {
      display: none;
      position: fixed;
      z-index: 999;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      overflow: auto;
      background-color: rgba(0,0,0,0.6);
    }

    .modal-content {
      background-color: #fff;
      margin: 10% auto;
      padding: 20px;
      border-radius: 16px;
      width: 80%;
      max-width: 300px;
      text-align: center;
    }

    .modal-content img {
      width: 100%;
      height: auto;
    }

    .close {
      color: #aaa;
      font-size: 24px;
      font-weight: bold;
      float: right;
      cursor: pointer;
    }

    /* === メディアクエリ：599px以下（スマホ）で表示切替 === */
    @media screen and (max-width: 599px) {
      .desktop-only {
        display: none !important;
      }

      .mobile-only {
        display: block !important;
      }
    }