.about .videoBox{
                
            }
           .about  .videoitem{
                width: 49%; 
                position: relative;
            }
           .about  .videoitem img{
                width: 100%;
                height: 400px;
                object-fit: cover;
            }
           .about  .videoitem .player{
                cursor: pointer;
                width: 100px;
                height: 100px;
               position: absolute;
               top: 50%;
               left: 50%;
               transform: translate(-50%,-50%);
            }
           .about  .aboutvideo{
                display: none;
                position: fixed;
                top: 140px;
                left: 300px;
                right: 300px;
                bottom: 140px;
                background: #000;
                z-index: 100;
            }
            .about .aboutvideo video{
                width: 100%;
                height: 100%;
            }
            .about .aboutvideo p{
                cursor: pointer;
                position: absolute;
                z-index: 101;
                top: 10px;
                right: 10px;
                text-decoration: underline;
                color: #fff;
                font-size: 20px;
            }

.about .about_main .title {
  font-size: 30px;
  font-weight: 500;
  margin-bottom: 36px;
}
.about .about_main .content {
  margin-top: 45px;
  font-size: 16px;
  font-weight: 400;
  color: #000000;
  line-height: 30px;
  text-indent: 2em;
  margin-bottom: 60px;
}
.about .about_main .numinfo {
    width: 49%;
    flex-wrap: wrap;
  /*margin: 26px 0;*/
  /*padding: 20px 0;*/
}
.about .about_main .numinfo .numitem {
  width: 48%;
  cursor: pointer;
}
.about .about_main .numinfo .numitem p {
  font-size: 20px;
  font-weight: 400;
  color: #000000;
}
.about .about_main .numinfo .numitem p:first-child {
  transition: all 0.3s;
  font-size: 42px;
  color: #AD1F24;
}
.about .about_main .numinfo .numitem p:first-child span{
    font-weight: bold;
}
.about .about_main .numinfo .numitem p:last-child {
  margin-top: 17px;
  border-top: 1px solid #AD1F24;
  height: 60px;
  font-size: 18px;
  padding: 14px 0 30px;
}
.about .about_main .numinfo .numitem p:last-child span {
  font-weight: 700;
}
.about .about_main .numinfo .numitem:hover p:first-child {
  transform: scale(1.1);
}
.group_main .title {
  font-size: 30px;
  font-weight: 500;
  color: #000000;
  line-height: 36px;
}
.culture .cul_main .cul_item {
  padding: 0 119px;
  height: 350px;
  margin-bottom: 38px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.culture .cul_main .cul_item p {
  color: #fff;
  font-size: 20px;
  margin-bottom: 29px;
}
.culture .cul_main .cul_item .title {
  font-size: 30px;
  font-weight: 500;
}
.culture .cul_main .cul_item:nth-child(1) {
  background: url(../img/yuanjing.jpg) 100% no-repeat;
  background-size: 100% 100%;
}
.culture .cul_main .cul_item:nth-child(2) {
  background: url(../img/yuanjing2.jpg) 100% no-repeat;
  background-size: 100% 100%;
}
.culture .cul_main .cul_item:nth-child(3) {
  background: url(../img/yuanjing3.jpg) 100% no-repeat;
}
@media screen and (max-width: 750px) {
   .about  .videoBox{
        flex-direction: column;
    }
   .about  .videoitem{
        width: 100%;
        margin-bottom: 20px;
    }
    .about .videoitem img{
        height: 260px;
    }
    .about .aboutvideo{
        height: 200px;
        top: 10px;
        left: 10px;
        right: 10px;
    }
    .about .aboutvideo span{
        font-size: 14px;
    }
  .about .about_main .title {
    font-size: 20px;
    margin-bottom: 20px;
  }
  .about .about_main img {
    width: 100%;
  }
  .about .about_main .content {
    margin: 20px 0;
    font-size: 12px;
    line-height: 20px;
  }
  .about .about_main .numinfo {
      width: 100%;
    margin: 0;
    flex-direction: column;
  }
  .about .about_main .numinfo .numitem {
    width: 100%;
  }
  .about .about_main .numinfo .numitem p {
    font-size: 18px;
  }
  .about .about_main .numinfo .numitem p:first-child {
    font-size: 30px;
  }
  .about .about_main .numinfo .numitem p:last-child {
    height: auto;
    padding: 10px 0 20px;
    font-size: 14px;
  }
  .group_main .title {
    font-size: 20px;
    line-height: 30px;
  }
  .group_main img {
    width: 100%;
  }
  .culture .cul_main .cul_item {
    padding: 20px;
    height: auto;
    margin-bottom: 20px;
  }
  .culture .cul_main .cul_item p {
    margin-bottom: 10px;
    font-size: 12px;
  }
  .culture .cul_main .cul_item .title {
    font-size: 20px;
  }
}