@charset "UTF-8";
  .notebooklm_container {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 16px 40px;
    background-color: #fff;
  }
  .notebooklm_title {
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 12px;
  }
  .notebooklm_title span {
    font-weight: bold;
  }
  .blue { color: #4285F4; }
  .red { color: #EA4335; }
  .yellow { color: #FBBC05; }
  .green { color: #34A853; }
  .notebooklm_subtitle {
    text-align: center;
    color: #1a73e8;
    font-weight: bold;
    margin-bottom: 16px;
    font-size: 18px;
  }
  .notebooklm_desc {
    text-align: center;
    font-size: 14px;
    margin-bottom: 24px;
    line-height: 1.6;
    color: #555;
  }
  .notebooklm_box {
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 24px;
    font-size: 14px;
    line-height: 1.6;
  }
  .notebooklm_info {
    background-color: #e8f0fe;
    border-left: 4px solid #4285F4;
  }
  .notebooklm_usage {
    background-color: #e6f4ea;
    border-left: 4px solid #34A853;
  }
  .notebooklm_warning {
    background-color: #fef7e0;
    border-left: 4px solid #FBBC05;
  }
  .notebooklm_box h3 {
    font-size: 16px;
    margin-top: 0;
    margin-bottom: 0.5em;
    display: flex;
    align-items: center;
  }
  .notebooklm_box h3::before {
    margin-right: 8px;
    font-size: 18px;
  }

  .notebooklm_box ul {
    padding-left: 1.2em;
    margin: 0;
  }
  .notebooklm_box li {
    margin-bottom: 0.5em;
  }
  .notebooklm_button {
    background-color: #1a73e8;
    color: white;
    text-align: center;
    font-weight: bold;
    padding: 14px;
    border-radius: 6px;
    text-decoration: none;
    display: block;
    max-width: 400px;
    margin: 0 auto 12px;
    font-size: 15px;
  }

  .notebooklm_button:hover {
    background-color: #1666c1;
  }

  .notebooklm_powered {
    text-align: center;
    font-size: 13px;
    color: #fff;
    margin-top: 8px;
  }

  
  .notebooklm_footer {
    text-align: center;
    font-size: 12px;
    color: #666;
    margin-top: 3px;
    padding: 16px;
    border-top: 1px solid #ddd;
  }

  @media (max-width: 480px) {
    .notebooklm_title {
      font-size: 20px;
    }

    .notebooklm_subtitle {
      font-size: 16px;
    }

    .notebooklm_desc {
      font-size: 13px;
    }

    .notebooklm_box h3 {
      font-size: 15px;
    }

    .notebooklm_box {
      font-size: 13px;
      padding: 14px 16px;
    }

    .notebooklm_button {
      font-size: 14px;
      padding: 12px;
    }
  }