.main_section_phone{
  display:none;
}
.main_section{
  background-color: #f8f8f8;
}
.yydt-banner{
  width:100%;
}
.yydt-banner img{
  width:100%;
  display:block;
}
.main{
  width:1400px;
}
.yydt{
  width:100%;
  padding:45px 0 90px;
}
.yydt-title{
  display:block;
  width:235px;
  margin-bottom:60px;
}
.yydt-box{
  width:100%;
}
.yydt-item{
  width:100%;
  margin-bottom:80px;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: space-between;
  -ms-flex-pack: space-between;
  -webkit-justify-content: space-between;
  -moz-justify-content: space-between;
  justify-content:space-between;
  overflow: hidden;
}
.yydt-item .yydt-item-img-box{
  display:block;
  width:700px;
  height:420px;
  padding-right:100px;
}
.yydt-item .yydt-item-img-box img{
  display:block;
  width:600px;
  height:420px;
}
.yydt-item-con{
  float:left;
}
.yydt-item-con .time{
  color:#888888;
  font-size:16px;
  line-height: 26px;
  width:300px;
  border-bottom:1px solid #1d21a9;
}
.yydt-item-con .yydt-item-title{
  font-size:36px;
  line-height: 48px;
  color:#282828;
  margin:25px 0 30px;
}
.yydt-item-con .yydt-item-summary{
  font-size:20px;
  line-height: 36px;
  text-indent:2em;
  color:#282828;
}
.yydt-item-con .detail{
  display:block;
  width:200px;
  float:right;
  margin-top:50px;
}
.yydt-item-con .detail img{
  display:block;
  width:200px;
}
@media screen and (max-width: 1600px) {
  .main{
    width:1200px;
  }
  .yydt{
    width:100%;
    padding:38px 0 77px;
  }
  .yydt-title{
    display:block;
    width:202px;
    margin-bottom:52px;
  }
  .yydt-box{
    width:100%;
  }
  .yydt-item{
    width:100%;
    margin-bottom:68px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: space-between;
    -ms-flex-pack: space-between;
    -webkit-justify-content: space-between;
    -moz-justify-content: space-between;
    justify-content:space-between;
    overflow: hidden;
  }
  .yydt-item .yydt-item-img-box{
    display:block;
    width:600px;
    height:360px;
    padding-right:86px;
  }
  .yydt-item .yydt-item-img-box img{
    display:block;
    width:514px;
    height:360px;
  }
  .yydt-item-con{
    float:left;
  }
  .yydt-item-con .time{
    color:#888888;
    font-size:14px;
    line-height: 22px;
    width:258px;
    border-bottom:1px solid #1d21a9;
  }
  .yydt-item-con .yydt-item-title{
    font-size:30px;
    line-height: 42px;
    color:#282828;
    margin:22px 0 26px;
  }
  .yydt-item-con .yydt-item-summary{
    font-size:17px;
    line-height: 31px;
    text-indent:2em;
    color:#282828;
  }
  .yydt-item-con .detail{
    display:block;
    width:172px;
    float:right;
    margin-top:42px;
  }
  .yydt-item-con .detail img{
    display:block;
    width:172px;
  }
}
@media screen and (max-width: 1400px) {
  .main{
    width:1000px;
  }
  .yydt{
    width:100%;
    padding:32px 0 64px;
  }
  .yydt-title{
    display:block;
    width:168px;
    margin-bottom:43px;
  }
  .yydt-box{
    width:100%;
  }
  .yydt-item{
    width:100%;
    margin-bottom:56px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: space-between;
    -ms-flex-pack: space-between;
    -webkit-justify-content: space-between;
    -moz-justify-content: space-between;
    justify-content:space-between;
    overflow: hidden;
  }
  .yydt-item .yydt-item-img-box{
    display:block;
    width:500px;
    height:360px;
    padding-right:72px;
  }
  .yydt-item .yydt-item-img-box img{
    display:block;
    width:428px;
    height:300px;
  }
  .yydt-item-con{
    float:left;
  }
  .yydt-item-con .time{
    color:#888888;
    font-size:12px;
    line-height: 18px;
    width:215px;
    border-bottom:1px solid #1d21a9;
  }
  .yydt-item-con .yydt-item-title{
    font-size:25px;
    line-height: 35px;
    color:#282828;
    margin:18px 0 22px;
  }
  .yydt-item-con .yydt-item-summary{
    font-size:14px;
    line-height: 26px;
    text-indent:2em;
    color:#282828;
  }
  .yydt-item-con .detail{
    display:block;
    width:144px;
    float:right;
    margin-top:35px;
  }
  .yydt-item-con .detail img{
    display:block;
    width:144px;
  }
}
@media screen and (max-width: 480px) {
  .head{
    display:none;
  }
  .main_section{
    display:none;
  }
  .main_section_phone{
    display:block;
  }
  .yydt-phone-banner{
    width:100%;
  }
  .yydt-phone-banner .swiper-container{
    width:100%;
  }
  .yydt-phone-banner .swiper-wrapper{
    width:100%;
  }
  .yydt-phone-banner .swiper-slide{
    width:100%;
    position:relative;
    height:472.5px;
  }
  .yydt-phone-banner .swiper-slide img{
    display:block;
    width:100%;
    height:472.5px ;
    object-fit: cover;
  }
  .yydt-phone-banner .swiper-slide .swiper-slide-mask{
    display:block;
    position:absolute;
    left:0;
    top:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.3);
    z-index:10;
  }
  .yydt-phone-banner .swiper-slide .swiper-slide-mask .swiper-slide-content{
    width:100%;
    position:absolute;
    left:0;
    bottom:0;
    padding:0 12.5px 53px;
  }
  .yydt-phone-banner .swiper-slide .swiper-slide-mask .swiper-slide-title{
    width:100%;
    font-size:26px;
    line-height: 36px;
    color:#fff;
  }
  .yydt-phone-banner .swiper-slide .swiper-slide-mask .slide-detail{
    width:110px;
    display:block;
    height:30px;
    line-height:30px;
    border-radius:4px;
    font-size:15px;
    margin-top:10px;
    text-align:center;
    background-color:#f14b4f;
    color:#fff;
  }
  .yydt-phone-banner .swiper-pagination-bullet {
    width: 40px;
    height: 5px;
    display: inline-block;
    border-radius:2%;
    background: #000;
    opacity: 0.4;
  }
  .yydt-phone-banner .swiper-pagination-bullet-active{
    width: 40px;
    height: 5px;
    display: inline-block;
    border-radius:2%;
    background: #f14b4f;
    opacity: 1;
  }
  .main-phone{
    width:92%;
    margin:0 auto;
    padding:20px 0 28px;
  }
  .yydt-phone{
    width:100%;
  }
  .yydt-phone-title{
    display:block;
    width:47.8%;
    margin-bottom:25px;
  }
  .yydt-phone-box{
    width:100%;
  }
  .yydt-phone-item{
    width:100%;
    background-color:#fff;
    box-shadow: 0 0 40px #dadbdb;
    border-radius:8px;
    margin-bottom:20px;
  }
  .yydt-phone-item img{
    display:block;
    width:100%;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
  }
  .yydt-phone-item-con{
    width:100%;
    padding:20px;
  }
  .yydt-phone-item-title{
    width:100%;
    color:#282828;
    font-size:20px;
    line-height:30px;
    font-weight: bold;
  }
  .yydt-phone-item-intr{
    width:100%;
    color:#646464;
    font-size:14px;
    margin-top:12px;
    line-height:22px;
  }
  .main-phone .more{
    width:46%;
    height:35px;
    text-align:center;
    margin:0 auto;
    border:1px solid #4d4845;
    border-radius:17.5px;
    line-height:35px;
    color:#4e4745;
    font-size:14px;
  }
}