@media (max-width: 1920px) {
  /* .a{bottom: 49%; left: 29%;}
  .c{bottom: 66%;left: 75%;}
  .b{bottom:40%; left: 52%;} */
  /* .page-main{width: 85%;} */
  /* .abo-1st .right {width: 40%;} */
  /* .abo-2nd{height:800px;} */
  .abo-2nd .abo-text{font-size: 16px;}
  .abo-2nd .abo-text{margin-top: 100px; width: 75%;}
  /* .abo-4th{min-height: 800px;} */
  /* .abo-4th .abo-text{min-height: 800px;} */
  .sells-1st ul{width: 100%;}
  .sells-1st li{width: 33.333333%;}
  .sells-2nd{min-height: 800px;}
  .sells-1st li img{margin: 0 10px;}
  .sells-1st li .img-box{margin: 25px 0}

  .tech-1st .img-box{float: left;}
  .tech-2nd .img-box{margin:20px 1% 100px;}
  .sell-title-box{top:280px;}
  .sell-title-box h1{font-size: 68px;}
}

@media (max-width: 1440px) {
  .a{bottom: 35%; left: 18%;}
  .c{bottom:45%; left: 70%;}
  .b{bottom: 15%;left: 45%;}
  /* .page-main{width: 80%;} */
  /* .abo-1st .right {width: 60%;} */
  /* .abo-2nd{height: 575px;} */
  .abo-2nd .abo-text{margin-top: 50px; width: auto;}
  /* .abo-4th{min-height: 600px;} */
  .abo-4th .abo-text{padding-bottom: 0;}
  /* .sells-1st li{width:auto;} */
  /* .sells-1st ul{width: 80%;} */
  .sells-2nd{min-height: 600px;}
  /* .tech-1st .img-box{float: none;} */
  .tech-2nd .img-box{margin:20px 1% 50px;}
  .sells-1st li span{display: block; margin-top: 10px;}
  .sells-1st li img{margin: 0 20px;}
  .sell-title-box{top:150px;}
  .sell-title-box h1{font-size: 48px;}
}
@media (max-width: 1200px){
  .tech-2nd .img-box{float:left; width: 48%;}
  .tech-2nd .part-title{float: none;}
  .tech-2nd .box-1200:nth-last-child(2n+1) .part-title {float: none;}
}

@media (max-width: 768px) {
  .neu{display: block;}
  .header-nav{display: none;}
  .box-1200,.box-950{margin-left: 1%;margin-right: 1%}
  .abo-2nd .box-1200>img{width: 100%;}
  .abo-2nd .box-1200 .bb{width:100%; padding: 0 1%;}
  .banner{position: relative;}
  .banner img{position: relative;width: 150%;max-width: none;right: 25%; }
  .sec-nav{z-index: 99;}
  .sq-list>li{width: 50%; border-bottom: 1px #fff dotted;}
  /* .sq-list>li:first-child{display: none;} */
  .a{left: 15%;bottom: 25%;}
  .b{bottom: 10%;left: 40%;}
  .c{left: 60%;bottom: 30%;}
  .header {width: 100%; float: none; position: relative;;}
  .page-main{height: auto;width: 100%;overflow: hidden; float: none; overflow: inherit;}
  .page-main::-webkit-scrollbar {display: none;}
  .logo{margin-bottom: 0;}
  .sec-nav{width: 100vw;}
  .index-nav{height: auto;width:100%;}
  .abo-1st{background: none;}
  .grid-item{width: 24%;}
  .ywlx .info li{width: 100%;margin: 20px auto;}
  .ywlx .left{width: 100%;}
  .ywlx .right{width: 100%;}
}

@media (max-width: 600px){
  body{font-size: 14px;}
  .sec-nav li{padding: 0 5px;}
  .abo-1st{margin-top: 20px;}
  .abo-2nd .box-950{padding: 5px; background-color: rgba(0,0,0,0.5);width: 320px;}
  .abo-2nd{height: 350px;}
  .footer-nav{display: none;}
  .qrc{width: 30%; float: none;margin: 0 auto;}
  .qrc img{width: 100%}
  .abo-3rd li{margin:0 auto; ;width:50%;}
  .abo-3rd li:last-child{margin: 0 auto;}
  .abo-3rd .box-950 ul{background-color: #ed7f2e;}
  .float-box h4{font-size: 16px;}
  .index-nav{bottom: 0;top: auto;}
  .index-nav li{float: none;width: 100%;line-height: 40px;border-bottom: 1px #fff dotted;}
  .index-nav ul{width: 100%;}
  .index-nav li a{padding: 0;width: 100%;height: 100%;display: block;}
  .index-nav li:hover a{padding: 0;}
  .float-box{display: none;}
  .city-choose a{float: left;}
  .place-list li{width: 48%;}
  .place-list li:nth-child(3n){margin-right: 2%}
  .place-list li:nth-child(2n){margin-right: 0}
  .main-box{margin-bottom: 0}
  .shequ{width: 80%;}
  .sq-list>li{width: 100%;}
  .sells-1st li .img-box{margin-bottom: 10px;}
  .sells-1st li{width: 100%; margin-bottom: 20px;}
  .sells-2nd li{width: 98%;}
  .sells-2nd{margin: 0;}
  .sells-2nd .icon-1{bottom: 20%;}
  .sells-3rd{margin-top: 0;}
  .succes-loop{width: 280%; margin-bottom: 20px;}
  .tech-2nd .img-box{width: 100%; margin-bottom: 30px;}
  .sell-title-box{top:100px;}
  .place-list ul{padding: 0;}
}
@media (max-width: 425px){
  .qrc{width: 50%;}
  .abo-2nd{height: 300px;}
  .banner img{width: 200%;right: 50%; }
  .c{left: 45%;}
  .a{bottom: 20%;}
  .float-bc{width: 40px;height: 40px;margin-right: -20px;margin-top: -20px;}
  .float-sc{width: 25px;height: 25px;margin-right: -12.5px;margin-top: -12.5px;}
  .float-c{width: 40px;height: 40px;}
  .float-box h4{line-height: 40px;}
  .up-box{padding-top: 50px;top: -100px}
  .bread-nav{margin: 0 auto 10px;}
  .part-title h2{font-size: 24px;}
  .part-title h3{font-size: 20px;}
  .loop-text{font-size: 18px;}
  .tech-1st li p{font-size: 16px;padding: 5px;}
  .sell-title-box{left: 25%;}
  .abo-4th .abo-text,.abo-3rd .abo-text{width: 90%;padding: 1%;}
  .sells-2nd img{width: 100%;}
  .sells-2nd .sell-adv{width: 100%;}
  .news-list li .left{width: 100%;}
  .news-list li .right{width: 100%;}
  .tech-2nd .part-title{width: 100%; margin: 0;}
  .tech-2nd .box-1200{margin: 0;}
  .tech-1st li{padding: 0;}
  .grid-item{width: 32.333333%;}
}
@media (max-width: 375px){
    body{font-size: 12px;}
  .abo-2nd{height: 250px;}
  .abo-3rd li{float: none;width:95%;}
  .abo-3rd .box-950 ul{background-color:inherit;}
  .c{left:15%;}
  .a{left: 25%;}
  .b{left:35%;}
  .up-box{padding-top: 35px;top: -70px}
  .place-list li{width: 100%;}
  .part-title h3{font-size: 16px;}
  .sell-title-box{left: 20%; top: 80px;}
  .tech-1st .right{width: 100%;}
}
@media (max-width: 320px){
  .tech-1st .img-box{width: 100%;   margin-bottom:0 ;}
}