* {
    margin: 0 auto;
    padding: 0;
    box-sizing: border-box;
    }
  html, body {
    height: 100%;
    }

  body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    }
  .top {
    background: rgba(32, 27, 27, 0.7); /* 自定义顶部颜色，可以用vscode取色，此处使用rgb，可以更换为其他颜色体系 */
    color: #fff;
    font-weight: 100;
    padding: 10px 15px;
    width: 100%;
    }

  .top .app-name {
    font-size: 1.2em;/* 自定义顶部字体大小 */
    font-weight: bold;
    text-align: left;
  }

  .main-content {
    flex: 1; 
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
  }

  .logo {
    width: 300px;
    height: auto;
    margin-bottom: 20px;
  }

  .app-name {
    font-size: 2em;
    font-weight: bold;
    margin-bottom: 20px;
  }
  .version {
    margin: 0 auto;
    color:#666;
    font-size: 0.8em;
  }

  .download-buttle {
    background-color: #3b88ed;/*自定义下载按钮颜色*/
    color: #fff;
    text-decoration: none;
    display: inline-block;
    padding: 15px 30px;
    font-size: 1em;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-bottom: 30px;
  }

  .download-buttle:hover {
    background-color: #0056b3;
  }

  .description {
    font-size: 1.1em;
    margin-bottom: 40px;
    line-height: 1.8;
  }

  .footer {
    background-color: #eee;
    padding: 20px;
    text-align: center;
    font-size: 0.9em;
    color: #666;
    width: 100%;
  }

  @media (max-width: 600px) {
    .logo {
      width: 80%;
    }
    .top {
      padding: 10px 15px;
    }
    .top .app-name {
      font-size: 1.2em;
    }
    .download-buttle {
      padding: 10px 20px;
      font-size: 0.9em;
    }
    .description {
      font-size: 1em;
      margin-bottom: 20px;
    }
  }