html, body {
  position: relative;
  height: 100%;
}
*{
    margin:0px;
    padding:0px;
 }
a{
    text-decoration:none;
    color: #fff;
}
a:hover{
  color: #ff6600;
}
img{
  max-width: 100%;
}
body{
    font-family: '微软雅黑';
    margin: 0 auto;
    height: 100%;
    background-color:#fff;;
    color:#fff;
    overflow-x:hidden;
    padding: 0;
    font-size: 16px;
}
li{
    list-style-type: none;
}
.clear{
    clear: both;
}
.kuang {
    width: 83%;
    display: inline-block;
    position: relative;
    z-index: 1;
}
#header{
  position: fixed;
  top: 0;
  text-align: center;
  background-color: #000000b3;
  width: 100%;
  font-size: 0;
  z-index: 999;
}
.logo{
    float: left;
}
.nav{
  float: right;
}
.nav ul li{
  position: relative;
  float: left;
}
.nav ul li a{
  font-size: 18px;
  display: inline-block;
  line-height: 90px;
  margin: 0px 20px;
}
.nav ul li:last-child a{
  margin-right: 0px;
}
.nav ul li:hover ul{
    display: flex;
}
.nav ul li ul{
    position: absolute;
    left: 0;
    display: none;
    padding: 5px 0px;
    background: #000000b3;
    flex-direction: column;
    flex-wrap: nowrap;
    align-content: flex-start;
    justify-content: center;
    align-items: flex-start;
    width: max-content;
    padding: 5px 20px;
}
.nav ul li ul li a{
    line-height: 48px;
    font-size: 16px;
    margin: 0;
}
#banner{
  font-size: 0px;
}
.swiper {
width: 100%;
height: 100%;
}

.swiper-slide {
text-align: center;
font-size: 18px;
background: #fff;

/* Center slide text vertically */
display: -webkit-box;
display: -ms-flexbox;
display: -webkit-flex;
display: flex;
-webkit-box-pack: center;
-ms-flex-pack: center;
-webkit-justify-content: center;
justify-content: center;
-webkit-box-align: center;
-ms-flex-align: center;
-webkit-align-items: center;
align-items: center;
}

.swiper-slide img {
display: block;
width: 100%;
height: 100%;
object-fit: cover;
}
.b_text{
    width: 83%;
    position: absolute;
    left: 0;
    right: 0;
    top: 25%;
    margin: 0 auto;
}
.b_text_tit{
    font-size: 60px;
    font-weight: bold;
}
.b_text_dsc{
    margin-top: 20px;
    font-size: 30px;
}
.intro_left{
    height: 400px;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-content: center;
    justify-content: center;
    align-items: center;
    width: 50%;
    float: left;
    background-image: url(../images/about_bg_02.jpg);
}
.intro_right_list{
  background-color: #000;
  width: 25%;
}
.intro_left_dsc{
  line-height: 34px;
}
.intro_left_dsc p span{
  color:#ff6600;
}
.intro_left_dsc p{
  margin: 20px 0px;
}
.intro_left_box h3{
  font-size: 34px;
  font-weight: normal;
}
.title_en{
  margin-top:20px;
  font-size: 18px;
}
/* .ir_box{
  width:
} */
.intro_right{
    width: 50%;
    float: right;
}
.intro_right_box1{
  background-color: #535456;
}
.intro_right_box2{
  color:#000;
  background-image: url('../images/intro_03.jpg');
      background-size: cover;
}
.intro_right_box3{
  background-image: url('../images/intro_05.jpg');
      background-size: cover;
}
.intro_right_box4{
  background-color: #58834b;
}
.intro_right_list{
  width: 50%;
  float: left;
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  align-content: center;
  justify-content: center;
  align-items: center;
}
.ir_box{
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-content: center;
    justify-content: center;
    align-items: center;
}
.intro_left_box{
  text-align: center;
  width: 58%;
}
.irb_number{
  font-size: 40px;
}
.line{
  width: 33px;
  height: 3px;
  background-color: #fff;
}
.irb_text{
  font-size: 18px;
  margin: 24px 0px 60px 0px;
}
.intro_right_box2 .line{
  background-color: #000;
}
#introduction{
    display: inline-flex;
    background: #000;
    width: 100%;
}
#business{
  /* background-image: url('../images/bus_03.jpg'); */
  background-color: #010305;
  /* background-repeat: no-repeat; */
  text-align: center;
  padding: 100px 0px;
  position: relative;
}
.busin_tit{
  text-align: left;
}
.part_tit{
  color:#e4e4e4;
  font-size:30px;
}
.part_dsc{
  /* color: #707070; */
  font-size: 18px;
}
.busin_box{
  margin-top: 50px;
}
.busin_prom {
    background-image: url(../images/business_05.jpg);
    height: 525px;
    float: left;
    padding: 0px 2%;
    text-align: left;
    font-size: 14px;
    width: 13.5%;
    position: relative;
}
.busin_prom_tit{
  font-size: 22px;
  margin-top: 40px;
}
.busin_prom_dsc{
  font-size: 14px;
  margin-top: 15px;
}

.busin_prom_num {
    font-size: 40px;
}
.busin_list {
    float: left;
    width: 54%;
    margin-left: 10px;
}
.busin_list ul li{
  background-color: #242424;
  padding: 2%;
  margin: 0px 1% 1% 0px;
  text-align: left;
  display: inline-block;
  width: 45%;
  float: left;
  position: relative;
  height: 112.5px;
}
.busin_list ul li:hover{
    background-color: #FB680A;
}
.busin_list ul li:hover p{
    color:#fff;
}
.busin_list ul li h3{
  font-weight: normal;
  font-size: 18px;
  margin: 9px 0px;
}
.busin_list ul li p{
  font-size: 12px;
  color: #979797;
  width: 80%;
}
.busin_list ul li img{
  float: right;
  position: absolute;
  right: 15px;
  bottom: 15px;
}
.bus_bimg{
  position: absolute;
  right: 0;
  bottom: 0;
  width: 25%;
}
#project{
  background-color: #020202;
  padding: 100px 0px;
  text-align: center;
  position: relative;
}
.project_left{
    float: left;
    width: 17%;
    text-align: left;
    margin-top: 1%;
}
.project_tit{

}
.project_con{
  margin-top: 250px;
  line-height: 32px;
}
.project_more{
  margin-top: 20px;
}
.project_more a{
  color: #ff6600;
  text-decoration-line: underline;
}
.project_right{
    float: right;
    width: 75%;
    text-align: left;
}
.project_right ul li{
    width: 31%;
    float: left;
    margin: 1%;
}
.project_right ul li a,.news_right ul li a{
  display: inline-block;
  overflow: hidden;
  font-size: 0;
}
.project_right ul li img,.news_right ul li img{
  transition: all 0.5s;
}
.project_right ul li:hover img,.news_right ul li:hover img{
  transform: scale(1.2);

}
.project_right ul li p{
  color:#d8d8d8;
  margin-top: 5px;
}
.project_bimg{
  position: absolute;
  left:0;
  bottom: 0;
}
#design{
  background-image: url('../images/project_18.jpg');
  height: 960px;
  text-align: center;
  background-attachment: fixed;
}
#design .kuang{
  width: 1000px;
  margin-top: 300px;
}
#design .kuang h3{
  margin-top: 70px;
  margin-bottom: 15px;
  font-weight: normal;
  font-size: 32px;
}
#design .kuang p{
  line-height: 30px;
}
#news{
  background-image: url('../images/news_02.jpg');
  text-align: center;
  padding: 150px 0px;
}
.new_left{
  float: left;
  width: 17%;
  text-align: left;
  margin-top: 1%;
}
.new_con{
  margin-top: 100px;
}
.news_right{
  float: right;
  width: 75%;
  text-align: left;
}
.news_right ul li{
  width: 31%;
  float: left;
  margin: 1%;
  background-color: #fff;
  border-radius: 10px;
  overflow: hidden;
}
.news_right ul li .news_list_box{
  padding: 20px;
}
.news_list_box h3{
  color: #2a2a2a;
  font-size: 18px;
}
.news_list_time{
  font-size: 14px;
  color: #ff6600;
  margin: 5px 0px;
}
.news_list_dsc{
    color: #666666;
    font-size: 14px;
    line-height: 24px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.news_right ul li img {
    width: 100%;
}
#footer{
  padding: 100px 0px;
  background-color: #000;
  text-align: center;
  font-size: 14px;
  color:#b3b2b2;
}
.footer_left{
  float: left;
  text-align: left;
  width: 26%;
}
.footer_dsc{
  color: #b3b2b2;
  line-height: 26px;
}
.footer_join img{
    vertical-align: middle;
    margin-left: 8px;
}
.footer_join a{
  color:#ff6600;
  display: inline-block;
  margin: 15px 0px 50px 0px;
}
.footer_right{

  float: right;
    width: 65%;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: flex-end;
}
.footer_list{
  float: left;
  width: 14%;
  text-align: left;
  margin: 1%;
}
.footer_list h3{
  color: #dddddd;
  font-weight: normal;
  font-size: 18px;
  margin-bottom: 20px;
}
.footer_list ul li{
  margin: 10px 0px;
}
.footer_list ul li a{
  color: #b3b2b2;
}
.footer_list ul li a:hover{
  color:#ff6600;
}
.footer_logo{
  margin-bottom: 30px;
}
.busin_prom_bot{
  position: absolute;
  bottom: 40px;
  width: 80%;
}
.moblie_head,.a_txt{
  display: none;
}
#project_container{
  text-align:center;
  padding:100px 0px;
}
.project_nav{
  margin-bottom:10px;
}
.project_nav ul{
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-content: center;
    justify-content: center;
}
.project_nav ul li{
  float:left;
  margin:15px 35px;
  padding-bottom:15px;
  border-bottom:3px solid #fff;
}
.project_list ul li a{
  display: inline-block;
  overflow: hidden;
  font-size: 0;
}
.project_list ul li img {
    transition: all 0.5s;
}
.project_list ul li:hover img {
    transform: scale(1.2);
}
.project_nav ul li:hover{
  border-bottom:3px solid #ff6600;
}
.project_nav ul li.cur{
  border-bottom:3px solid #ff6600;
}
.project_nav ul li a{
  color:#333333;
  font-size:26px;
}
.project_list ul li {
    width: 23%;
    float: left;
    margin: 1%;
}
.project_list ul li p {
  color: #2a2a2a;
  margin-top: 5px;
  text-align:left;
}
.project_list ul{
   display: flex;
   flex-wrap: wrap;
   flex-direction: row;
}
.project_right ul{
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
}
@media screen and (max-width: 1600px) {
  .kuang{
    width: 90%;
  }
  .project_con {
        line-height: 24px;
        margin-top: 150px;
        font-size: 15px;
    }
}
@media screen and (max-width: 1300px) {
  .kuang {
      width: 93%;
  }
  .intro_left_box{
    width: 80%;
  }
  .title_en {
      margin-top: 5px;
      font-size: 18px;
  }
  .intro_left_dsc{
      line-height: 24px;
      font-size: 15px;
  }
  .project_con {
      line-height: 24px;
      margin-top: 50px;
      font-size: 15px;
  }
  .irb_text {
      font-size: 14px;
      margin: 24px 0px 60px 0px;
  }
  .project_bimg {
      width: 27%;
  }
  .footer_left{
    float: left;
    text-align: left;
    width: 25%;
  }
  .footer_right{
    float: right;
    width: 70%;
  }
  .project_nav ul li a{
    font-size: 16px;
  }
  .project_list ul li p{
    font-size: 14px;
  }
  .b_text{

    top: 20%;
    }
    .b_text_tit{
        font-size: 40px;
        font-weight: bold;
    }
    .b_text_dsc{
        margin-top: 20px;
        font-size: 20px;
    }

}
@media screen and (max-width: 1000px) {
  #header{
      display: none;
  }
  .moblie_head{display:block;height:70px;    background-color: #000;top:0px;left:0px;width:100%;z-index:9999;position:fixed;}
  .moblie_head .lf{padding-top:10px;padding-left:2%;float:left;}
  .moblie_head .lf img{height:50px}
  .moblie_head .rg{padding-right:2%;padding-top:25px;float:right;}
  .moblie_head .rg a img{height:20px;vertical-align:bottom}
  .a_txt{display:block;position:fixed;top:0px;left:0px;width:0px;height:0px;overflow:hidden;z-index: 99999999;}
  .a_txt .div1{position:absolute;width:100%;height:100%;background:#0b0d19;filter:alpha(opacity=0);opacity:0;left:0px;top:0px;z-index:1}
  .a_txt .div2{position:absolute;width:20%;left:10px;top:10px;z-index:100;text-align:center;filter:alpha(opacity=0);opacity:0}
  .a_txt .div3{position:absolute;width:80%;right:0px;top:0px;background:#000;height:100%;z-index:100;right:-80%}
  .a_txt .div3 ul{padding-left:5%;padding-right:5%;padding-top:5%;}
  .a_txt .div3 ul li{border-bottom:1px solid #fff;margin:0px;position:relative;}
  .a_txt .div3 ul li a{display:block;height:35px;color:#fff;line-height:35px;padding-left:5%;font-size:14px}
  .a_txt .div3 ul li .a_js2{background:url(../images/plus.png) 95% center no-repeat;-webkit-transition:all 0s;-moz-transition:all 0s;transition:all 0s;position:absolute;
      top: 0;
      right: 0;
      width: 16px;
      padding: 0;
  }
  .a_txt .div3 ul li .a_js2_on{background:url(../images/reduce.jpg) 95% center no-repeat;-webkit-transition:all 0s;-moz-transition:all 0s;transition:all 0s} 
  .a_txt .div3 ul li .a_txt2{display:none}
  .a_txt .div3 ul li .a_txt2 a{height:40px;line-height:40px;font-size:14px}
  .busin_list ul li {
    background-color: #242424;
    padding: 2%;
    margin: 1%;
    text-align: left;
    display: inline-block;
    width: 44%;
    float: left;
    position: relative;
    height: 112.5px;
  }
  #introduction {
      display: block;
  }
  .intro_left {
    height: auto !important;
    width: 100%;
    padding: 50px 0px;
  }
  .intro_left_box {
      text-align: center;
      width: 90%;
  }
  .intro_left_box h3 {
      font-size: 24px;
  }
  .title_en {
      font-size: 16px;
  }
  .intro_left_dsc {
    text-align: left;
      font-size: 14px;
  }
  .intro_right {
      width: 100%;
  }
  .irb_number {
      font-size: 24px;
  }
  .irb_text {
      font-size: 14px;
      margin: 12px 0px 20px 0px;
  }
  .busin_prom {
    height: auto !important;
    float: left;
    padding: 5% 2%;
    text-align: left;
    font-size: 14px;
    width: 96%;
    position: relative;
  }
  #business{
    padding: 50px 0px;
  }
  .busin_tit{
    text-align: center;
  }
  .part_tit{
    font-size: 24px;
  }
  .part_dsc{
    font-size: 16px;
  }
  .busin_prom,.bus_bimg{
    display: none;
  }
  .busin_box {
      margin-top: 30px;
  }
  .busin_list {
      float: left;
      width: 100%;
      margin-left: 0;
  }
  .busin_list ul li h3 {
      font-weight: normal;
      font-size: 16px;
      margin: 5px 0px;
  }
  .busin_list ul li img {
      float: right;
      position: absolute;
      right: 10px;
      bottom: 10px;
      width: 45px;
  }
  #project {
      background-color: #020202;
      padding: 0px 0px 50px 0px;
      text-align: center;
      position: relative;
  }
  .project_left {
      float: left;
      width: 100%;
      text-align: center;
      margin-top: 1%;
  }
  .project_con {
      line-height: 24px;
      margin-top: 20px;
      font-size: 14px;
  }
  .project_more a {
      font-size: 14px;
  }
  .project_right {
      float: right;
      width: 100%;
      text-align: left;
      margin-top: 50px;
  }
  .project_right ul li p {
      color: #d8d8d8;
      margin-top: 5px;
      font-size: 14px;
  }
  #design {
    height: auto;
    text-align: center;
    background-size: cover;
    padding: 100px 0px;
  }
  #design .kuang {
      width: 90%;
      margin-top: 0px;
  }
  #design .kuang h3 {
      margin-top: 30px;
      margin-bottom: 15px;
      font-weight: normal;
      font-size: 16px;
  }
  #design .kuang p {
      font-size: 14px;
      line-height: 24px;
  }
  #news {
      padding: 50px 0px;
      background-size: cover;
  }
  .new_left {
      width: 100%;
      text-align: center;
      margin-top: 1%;
  }
  .new_con {
      margin-top: 30px;
  }
  .news_right {
      float: right;
      width: 100%;
      text-align: left;
      margin-top: 10px;
  }
  .news_right ul li {
      width: 48%;
      float: left;
      margin: 1%;
      background-color: #fff;
      border-radius: 5px;
      overflow: hidden;
  }
  .news_right ul li .news_list_box {
      padding: 10px;
  }
  .news_list_box h3 {
      color: #2a2a2a;
      font-size: 15px;
  }
  .footer_logo {
      margin-bottom: 15px;
      text-align: center;
  }
  .footer_left {
      width: 100%;
  }
  .footer_join a {
      color: #ff6600;
      display: inline-block;
      margin: 15px 0px 20px 0px;
  }
  .footer_right {
      float: right;
      width: 100%;
      margin-top: 50px;
  }
}

@media screen and (max-width: 600px){
    .b_text{

    top: 5%;
    }
    .b_text_tit{
        font-size: 24px;
        font-weight: bold;
    }
    .b_text_dsc{
        margin-top: 5px;
        font-size: 16px;
    }
  #footer{
    padding: 50px 0px;
  }
  .footer_right {
      /*display: none;*/
      float: right;
      width: 100%;
      margin-top: 20px;
      display: none;
      flex-wrap: wrap;
      flex-direction: row;
      justify-content: space-between;
      align-content: flex-start;
      align-items: flex-start;
  }
  .footer_list h3 {
      font-size: 16px;
      margin-bottom: 10px;
  }
  .footer_list {
      float: right;
      width: 48%;
      text-align: left;
      margin: 2% 0%;
  }
  .irb_text {
      font-size: 12px;
  }
  .project_right ul li p {
      color: #d8d8d8;
      margin-top: 0px;
      font-size: 14px;
      margin-bottom: 5px;
  }
  #project_container {
      text-align: center;
      padding: 5% 0px;
  }
  .project_list ul li {
    width: 48%;
    float: left;
    margin: 1%;
  }
  .project_list ul li p {
    margin-top: 0px;
    font-size: 14px;
    margin-bottom: 5px;
  }
  .project_nav ul li {
    margin: 5px;
    font-size: 14px;
    padding-bottom: 5px;
  }
  .project_nav ul li a{
    font-size: 14px;
  }
  .project_nav ul {
    width: 100%;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-content: center;
    justify-content: flex-start;
  }

  #banner {
    font-size: 0px;
    margin-top: 70px;
  }
  .project_right ul li {
    width: 48%;
    float: left;
    margin: 1%;
  }
  .kuang{
    width: 95%;
  }
  
}