.culture_part1{
  display:flex;
  background:#e9edf6;
  align-items:center;
}
.culture_part1_img{
  flex: 0 0 30%;
}
.culture_part1_img img{
  width:100%;
}
.culture_part1_word{
  flex: 0 0 70%;
  padding: 30px 30px;
  font-size: 13px;
  line-height: 20px;
  color:#666;
  text-align: left;
  box-sizing: border-box;
}
.culture_part1_word>div{
  width:100%;
  margin: 10px 0;
}
.culture_part1_word_title{
  font-size: 20px;
  font-weight: bold;
  color:#2e79bf;
  line-height: 40px;
}

.culture_part2_title{
  font-size: 20px;
  font-weight: bold;
  color:#2e79bf;
  line-height: 40px;
  text-align:left;
}
.culture_part2_title span{
  display:inline-block;
  color:#ddd;
  padding: 0 10px;
}
.culture_part2_content{
  display:flex;
  justify-content: space-between;
  align-items: center;
}
.culture_part2_content_item{
  flex: 0 0 30%;
  line-height: 40px;
  font-size: 16px;
  color:#2e79bf;
  text-align: center;
  border:1px solid #ddd;
  border-radius: 10px;
  overflow: hidden;
}
.culture_part2_content_item_img{
  width:100%;
  overflow:hidden;
}
.culture_part2_content_item_img img{
  width:100%;
  transition: all 0.5s ease;
}
.culture_part2_content_item_img img:hover{
  transform: scale(1.1);
}

/* ai css */
.ai_part1_img_bg{
  position: absolute;
  bottom: 40px;
  left: 15%;
  width: 60%;
  z-index: 5;
}
.ai_part2{
  background:#2e79bf;
  padding: 30px 30px;
  color:#fff;
  font-size: 13px;
  line-height: 20px;
  text-align: left;
  box-sizing: border-box;
}
.ai_part2_title{
  text-align:center;
  margin-bottom: 20px;
}
.ai_part2_menu{
  display:inline-block;
  width: 70px;
  margin: 0 10px;
  vertical-align: middle;
  font-size: 16px;
  white-space: nowrap;
  font-weight: bold;
  line-height: 40px;
  cursor:pointer;
  position: relative;
  z-index: 10;
}
.ai_part2_menu_img{
  display:block;
  margin:0 auto;
  width: 50px;
  line-height: 50px;
  background:rgba(255,255,255,0.5);
  text-align: center;
  border-radius: 10px;
  overflow:hidden;
}
.ai_part2_menu_img img{
  width:70%;
}
.ai_part2_menu_active .ai_part2_menu_img{
  background:rgba(255,255,255,1);
}
.ai_part2_menu_active::after{
  content:'';
  display:block;
  position: absolute;
  bottom: -28px;
  background:#2e79bf;
  left: 0;
  right:0;
  margin:0 auto;
  width: 14px;
  height: 14px;
  border-left: 1px solid #fff;
  border-top: 1px solid #fff;
  transform: rotate(45deg);
}
.ai_part2_content{
  border:1px solid #fff;
  padding:24px 24px;
  color:#fff;
  font-size:13px;
  line-height:20px;
  text-align:left;
  box-sizing: border-box;
}
.ai_part2_content b{
  display:block;
  font-weight:bold;
  font-size:14px;
  margin: 5px 0;
}

@media screen and (max-width:900px) {
  .ai_part1_img_bg{
    bottom: 20px;
  }
  .ai_part2{
    padding: 10px 10px;
  }
  .ai_part2_menu_active::after{
    display:none;
  }
  .ai_part2_menu{font-size: 12px;}
  .ai_part2_menu_img{
    width: 30px;
    line-height: 30px;
  }

  .culture_part1{
    flex-wrap:wrap;
  }
  .culture_part1_img{
    flex: 0 0 100%;
  }
  .culture_part1_word{
    flex: 0 0 100%;
    padding: 10px 10px;
  }
  .culture_part1_word_title{  
    font-size:14px;
    line-height: 24px;
  }
  .culture_part1_word>div{
    font-size:12px;
    line-height: 20px;
  }
}