.section4-content {
  height: 100vh;
  width: 100%;
  position: relative;
}

.section4-center-content {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.logo-section {
  width: 100%;
  height: 25%;
  margin: 7vh 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-section img {
  width: 18%;
}

.symbol-section {
  width: 100%;
  height: 6vh;
  margin-bottom: 3vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.symbol-section a {
  height: 100%;
}

.symbol-section a img {
  height: 100%;
  margin: 0 10px;
}

.address-section {
  width: 100%;
  margin-bottom: 3vh;
}

.address-section p {
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 16px;
  color: #505f8e;
  line-height: 32px;
  text-align: center;
  font-style: normal;
}

.download-section_4 {
  position: unset; /* 相对于 .main-image 定位 */
  bottom: unset; /* 示例：距离 .main-image 底部 15% 的位置 */
  left: unset;
  transform: unset;
  z-index: 3; /* 确保在图片上方 */
  display: flex;
  flex-direction: column; /* 如果二维码和按钮是垂直排列的 */
  align-items: center;
  width: 80%; /* 示例：下载按钮区域宽度为主图的80% */
  margin-bottom: 38px;
  gap: 50px;
  flex-wrap: wrap;
  visibility: hidden;
}

/* 装饰元素 */
.decorative-elements_4 {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  pointer-events: none;
}

.floating-element {
  position: absolute;
}

.star1 {
  top: 25vh;
  right: 10vw;
  animation-delay: -3s;
}

.star2 {
  bottom: 15vh;
  left: 14vw;
  animation-delay: -5s;
}

.star3 {
  top: 12vh;
  left: 30vw;
  animation-delay: -7s;
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
  /* 第四页整体布局调整 */
  .section4-center-content {
    width: 90%;
    padding: 30px 20px;
    gap: 25px;
    justify-content: center;
  }

  /* Logo区域调整 - 突出显示 */
  .logo-section {
    margin-bottom: 30px;
  }

  .logo-section img {
    width: 60%;
    max-width: 250px;
    min-width: 180px;
  }

  /* 下载按钮区域 - 完全隐藏 */
  .download-section_4 {
    display: none !important;
    visibility: hidden;
  }

  .symbol-section {
    gap: 20px;
    margin-bottom: 6vh;
    flex-wrap: wrap;
  }

  .symbol-section img {
    height: auto;
    width: 40%;
    margin: 0;
  }

  /* 添加a标签样式 */
  .symbol-section a {
    width: 40%;
    display: inline-block;
  }

  .symbol-section a img {
    width: 100%;
    height: auto;
    margin: 0;
  }

  /* 地址区域调整 - 简化显示 */
  .address-section {
    max-width: 100%;
    padding: 0 10px;
  }

  .address-section p {
    font-size: 12px;
    line-height: 20px;
    margin: 6px 0;
    color: #6b7ba0;
  }

  /* 装饰元素调整 */
  .star1 {
    top: 15vh;
    right: 5vw;
    width: 20px;
    height: 20px;
  }

  .star2 {
    bottom: 10vh;
    left: 8vw;
    width: 18px;
    height: 18px;
  }

  .star3 {
    display: none; /* 移动端隐藏第三个星星 */
  }
}