body{
    background-image: url(../images/bg.jpg);
    background-repeat: no-repeat;
    background-position: bottom center;
    background-size: contain;
    background-color: #025cc0;
    color: white;
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
}

/* 基础样式 */

    /* 标题样式 */
    .main-title {
      font-size: clamp(1.6rem, 5vw, 2.2rem);
      font-weight: bold;
      color: #f5e663;
    }

    .sub-title {
      font-size: clamp(1rem, 3vw, 1.2rem);
    }

    /* 按钮动画效果 */
    .function-btn {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-decoration: none;
      color: white;
    }

    .function-btn:hover,
    .function-btn:active {
      transform: scale(1.08);
      box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
      color: white;
    }

    /* 按钮图标样式 */
    .btn-icon {
      width: 96px;
      height: 96px;
      border-radius: 50%;
      background-color: rgba(255, 255, 255, 0.9);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 48px;
      color: #0066cc;
      margin: 0 auto;
    }
    .btn-icon img{
        width: 100%;
    }
    .btn-text {
      margin-top: 12px;
      font-size: 18px;
      display: block;
    }

.logo{width: 100%;margin: 70px auto;}