/* 公司业务样式 */
.business {
  padding: 60px 0 60px;
}

/* 标题旁边的口号框 */
.slogan-box {
  position: absolute;
  right: 0px;
  top: 10px;
  border-radius: 5px;
  /* padding: 10px 20px; */
  display: flex;
  justify-content: center;
  align-items: center;
}

.slogan-img {
  max-height: 24px;
  max-width: 100%;
}

/* 业务列表容器样式 - flex布局 */
.business-list {
  margin-top: 40px;
  width: 1192px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  o visibility: ;
  o visibility: o;
  o visibility: ov;
margin-bottom: 40px;
}

/* 每个业务项的基础样式 */
.business-item {
  width: 18%;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
}

/* 偶数项靠下显示 */
.business-item:nth-child(even) {
  transform: translateY(60px);
}

/* 业务项中的主图片 */
.business-item > img {
  display: block;
  width: 100%;
}

/* 业务项悬停效果容器 - 修改为渐变背景 */
.business-item .business-effect {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  background: linear-gradient(to top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0));
  transition: all 0.5s ease;
}

/* 业务项文本内容 */
.business-item .business-txt {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 0 5%;
  text-align: center;
  z-index: 3;
}

/* 文本内容表格布局 */
.business-item .business-txt .business-txt-table {
  width: 100%;
  height: 100%;
  display: table;
}

/* 文本内容单元格布局 */
.business-item .business-txt .business-txt-table .business-txt-cell {
  display: table-cell;
  vertical-align: middle;
}

/* 业务项图标 */
.business-item .business-txt img {
  display: block;
  margin: 20% auto 0;
  filter: brightness(0) invert(1); /* 确保图标为白色 */
}

/* 业务项标题 */
.business-item .business-txt h4 {
  font-size: 20px;
  color: #fff;
  margin-top: 10%;
}

/* 分隔线 */
.business-item .business-txt span {
  display: block;
  width: 50px;
  height: 3px;
  margin: 10% auto;
  background: #fff;
}

/* 业务项描述文本 */
.business-item .business-txt p {
  height: 0;
  font-size: 14px;
  color: #fff;
  line-height: 24px;
  padding: 0 10%;
  transition: all 0.5s;
  overflow: hidden;
  opacity: 0;
}

/* 业务项按钮 */
.business-item .business-txt a {
  opacity: 0;
  display: block;
  font-size: 16px;
  color: #fff;
  width: 118px;
  height: 38px;
  line-height: 38px;
  border: 1px solid #fff;
  margin: 10% auto;
  transition: all 0.5s;
}

/* 悬停状态下的渐变背景效果 */
.business-item:hover .business-effect {
  background: linear-gradient(to bottom, rgba(179, 32, 32, 0.425), #b91b23a4);
}

/* 悬停时展开描述文本 */
.business-item:hover .business-txt p {
  height: 72px;
  opacity: 1;
}

/* 悬停时显示按钮 */
.business-item:hover .business-txt a {
  opacity: 1;
}

/* 响应式样式 */
@media (max-width: 1200px) {
  .business-list {
    margin-top: 60px;
  }

  .business-item {
    width: 30%;
  }

  .business-item:nth-child(even) {
    transform: translateY(0);
  }

  .business-item .business-txt p {
    line-height: 20px;
    padding: 0;
  }

  .business-item .business-txt img {
    width: 40px;
    margin: 20px auto 0;
  }

  .business-item .business-txt h4 {
    font-size: 18px;
    margin-top: 15px;
  }

  .business-item .business-txt span {
    margin: 15px auto;
  }

  .business-item .business-txt a {
    font-size: 14px;
    height: 32px;
    line-height: 32px;
  }
}

@media (max-width: 767px) {
  .business-list {
    margin-top: 20px;
    justify-content: space-between;
  }

  .business-item {
    width: 48%;
    margin-bottom: 15px;
    height: 200px;
  }

  /* 第5个元素占满整行中间位置 */
  .business-item:nth-child(5) {
    width: 48%;
    margin: 0 auto 15px;
  }
  
  /* 移动端口号样式 */
  .slogan-box {
    position: relative;
    right: auto;
    top: auto;
    margin: 15px auto 0;
    max-width: 90%;
  }
  
  .slogan-img {
    max-height: 30px;
  }
}

@media (max-width: 576px) {
  .business-list {
    flex-direction: column;
    align-items: center;
  }

  .business-item,
  .business-item:nth-child(5) {
    width: 100%;
    max-width: 320px;
    margin-bottom: 15px;
  }
}