html{
  scroll-behavior: smooth;
}
body {
  background-color: #000;
  color:#666;
}


a {
  color: #999;
}

a:hover{
  text-decoration-line: none;
}


.b {
  font-weight: 500;
}

.navbar-dark .navbar-nav .nav-link{
  color: #FFFFFF;
}

.navbar-dark .navbar-nav .nav-link:hover{
  color: #ff5555;
}



.fr{
  float: right;
}

.tc{
  text-align: center;
}

hr{
  height: 120px;
  background: url(../images/bigline.png) no-repeat center;

  border:none;
}

h1,h2,h3,h4,h5,h6{
  line-height: 1;
  font-weight: normal;
}

h2{
  font-size: 42px;
  color: #DDD;
  text-align: center;
  margin: 50px auto;
}

ol,ul,li{
  list-style: none;
}

.container, .container-fluid, .container-lg, .container-md, .container-sm, .container-xl {
    width: 100%;
    padding-right: 20px;
    padding-left: 20px;
    margin-right: auto;
    margin-left: auto;
}

.row {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    margin-right: -20px;
    margin-left: -20px;
}

.col, .col-1, .col-10, .col-11, .col-12, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-auto, .col-lg, .col-lg-1, .col-lg-10, .col-lg-11, .col-lg-12, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-lg-auto, .col-md, .col-md-1, .col-md-10, .col-md-11, .col-md-12, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-md-auto, .col-sm, .col-sm-1, .col-sm-10, .col-sm-11, .col-sm-12, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-auto, .col-xl, .col-xl-1, .col-xl-10, .col-xl-11, .col-xl-12, .col-xl-2, .col-xl-3, .col-xl-4, .col-xl-5, .col-xl-6, .col-xl-7, .col-xl-8, .col-xl-9, .col-xl-auto {
    position: relative;
    width: 100%;
    padding-right: 20px;
    padding-left: 20px;
}


.navbar {
  background: rgba(1,1,1,0.9);
}

.navbar-nav a{
  text-align: center;
}

.mt20{
  margin-top: 20px;
}
.mt100{
  margin-top: 100px;
}





.navbar-brand{
  padding: 0.3rem;
  margin-right: 2rem;
}

.navbar-expand-xl .navbar-nav .nav-link{
  padding: 15px 25px;
  color: #eee;
}

.navbar-expand-xl .navbar-nav .nav-link.disabled{
  color: #555;
}



.mainmenu{

  margin: auto;
  width:100%;
  padding: 50px 0;
}


.mainmenu .menu a{
  line-height: 60px;
  display: inline-block;
  font-weight: bold;
  margin-left: 50px;
  color: #fff;
}

.slogan{
  margin-top: 250px;
  margin-bottom: 330px;
  font-size: 2rem;
  color: #ffffff;
}


.headline{
  height: 500px;
  background-repeat: no-repeat;
  background-size: cover;
}

.headline h3{
  font-size: 28px;
  color: #fff;
  padding: 180px 100px 100px 100px;
}

.headline img{
  max-width:100%;
  box-shadow: 0 0 15px #000000;
}

.headline a{
  display: block;
  padding-top: 20px;
  text-align:center;
}

.headline a.title{
  color:#666;
  font-size: 16px;
}

.headline a.category{
  color:#ff5555;
  font-size: 14px;
  font-weight: bold;
}

.container {
    max-width: 1610px;
    margin:auto;
  }

  .ailimit {
    overflow: hidden;
  }

.ailimit .logo{
  width: 35%;
  text-align: center;
  float: left;
}

.ailimit .logo img{
  display: inline-block;
  max-width: 100%;
}

.ailimit .description{
  margin-left: 800px;
  overflow: hidden;

}

.ailimit .description h3{
  padding-top: 10px;
  line-height:50px;
  font-size: 28px;
  color: #fff5da;
  font-weight: normal;
}

.ailimit .description p{
  font-size: 18px;
  line-height: 2;
  color: #CCC;
}

a.more{
  color: #ff5555;
}


.joinus a{
  display: block;
}


.joinus a.job {
  color: #DDD;
  font-size: 22px;
  padding: 15px 0;
  color: #999
}

.joinus a.job:hover{
  color: #FF5555;
}


.joinus a.project{
  font-size: 16px;
  color: #333;
}



.follow a img{
  width:55px;
}

.follow a {
  padding: 0 15px;
}


.footer{
  padding-top: 50px;
  padding-bottom: 100px;
}

.footer a{
  color: #666;
  margin: 0 10px;
}

.footer p{
  color: #333;
}


.carousel-control-next, .carousel-control-prev{
  opacity: 0;
  background: rgba(0, 0, 0, 0.5);
  border: none;
}

.sector-news {
  padding-top: 80px;
  overflow: hidden;
}

.sector-news .news-item{

  overflow: hidden;
}

.sector-news .news-item .bgpic {
  background-position: center;
  background-size: cover;
  display: block;
  overflow: hidden;
  height: 240px;
}

.news-item .title-group{
  padding: 15px 0;
}

.sector-news .news-item a.title{
  display: block;
  font-size: 20px;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 10px;
  color: #FFF;
}

.sector-news .news-item a.subtitle{
  font-size: 14px;
  color: #999;
  line-height: 1;
}

.sector-world{
  overflow: hidden;
  height: 520px;
}


.btn-main{
  border: 1px solid ;
  border-color: #666;
  border-radius: 2px;
  background: rgba(1, 1, 1, 0.8);
  color: #DDD;
  padding: 15px;
  display: inline-block;
  width: 340px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  margin: 20px;
}


.btn-main:hover{
  color: #ff5555;
  border-color: #ff5555;
}


.btn-main.yellow{
    border: 1px solid;
    border-color: #d9a93f;
    border-radius: 2px;

    color: #ffd188;
    display: inline-block;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
}
.btn-main.yellow:hover{
    border-color: #ffe5aa;

    color: #ffe6bd;
}


.world-bg{
  background: url(../images/world_bg.jpg) no-repeat;
  background-position: center center;
  position: absolute;
  width: 1500px;
  margin-top: -68px;
  margin-left: -300px;
  height: 670px;
  z-index: -900;
}

/* media */


@media only screen and (min-width: 300px) {

.wrap-bg{
    display: inline-block;
    image-rendering: auto;
    image-rendering: crisp-edges;
    background: url(../images/bg3_1000.jpg);
    position: absolute;
    background-repeat: no-repeat;
    background-position: center -85px;
    background-size: 850px auto;
    width: 100%;
    min-height: 1000px;
    z-index: -1000;
    text-align: center;
  }


.wrap-bg .logo{
  display: none;
}

.sector-main{
  overflow: hidden;
  height: 1000px;
  text-align: center;
}

.mainbtn-group{
  margin: 600px 0 0;
}


.btn-main{
  width: 100%;
  max-width: 340px;
  margin: 10px 0;
}

}


@media only screen and (min-width: 720px) {


.mainbtn-group{
  margin: 700px 0 0;
}
.btn-main{
  width: 100%;
  max-width: 340px;
  margin: 10px 10px;
}

}


@media only screen and (min-width: 1000px) {

.wrap-bg{
    display: inline-block;
    image-rendering: auto;
    image-rendering: crisp-edges;
    background: url(../images/bg3_1600.jpg);
    position: absolute;
    background-repeat: no-repeat;
    background-position: center -85px;
    background-size: 1600px auto;
    width: 100%;
    height: 1000px;
    min-height: 400px;
  }

.wrap-bg .logo{
  display: inline-block;
  position: absolute;
  margin-left: -600px;
  margin-top: 290px;
  width: 600px;
}

.sector-main{
  overflow: hidden;
  height: 1000px;
  text-align: center;
}



.mainbtn-group{
  margin: 550px 0 0;
}


.btn-main{
  background-size: cover;
  background-position: center;
  padding-top: 150px;
  width: 100%;
  margin: 20px;
}


.sector-slide{
  padding: 50px 0;
  max-width: 1200px;
}


  
}
  

@media only screen and (min-width: 1600px) {

.wrap-bg{
  display: inline-block;
  image-rendering: auto;
  image-rendering: crisp-edges;
  background: url(../images/bg3.jpg);
  position: absolute;
  background-repeat: no-repeat;
  background-position: center -85px;
  background-size: 2560px auto;
  width: 100%;
  height: 1080px;
  min-height: 400px;
}

.wrap-bg .logo{
  display: inline-block;
  position: absolute;
  margin-left: -700px;
  margin-top: 260px;
  width: 700px;
}


.sector-main{
  overflow: hidden;
  height: 1000px;
  text-align: center;
}


.mainbtn-group{
  text-align: left;
  margin: 640px 0 0 30px;
}


.btn-main{
  background-size: cover;
  background-position: center;
  padding-top: 150px;
  width: 360px;
}


.sector-slide{
  padding: 50px 0;
  max-width: 1200px;
}
  
}


.news-view{
  margin: 150px auto 0 auto;
}

.news-view h2{
  overflow: hidden;
  margin:100px 0 50px 0;
}


.content {
  font-size: 18px;
  line-height: 1.8;
  color: #CCC;
}

.content h3{
  font-size:  28px;
  padding: 30px 0 15px 0 ;
  color: #ffe0b2;
  
}

.content h4{
  font-size: 22px;
  padding: 20px 0 10px 0 ;
color: #9dbacf;
}

.content img{
  display: block;
  max-width: 80%;
  margin: 15px auto;
}

.btn-primary{
  border: 1px solid ;
  border-color: #666;
  border-radius: 2px;
  background: rgba(1, 1, 1, 0.8);
  color: #DDD;
  padding: 15px;
  display: inline-block;
  width: 340px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  margin: 20px;
}

.btn-primary.presskits{
  padding: 15px;
  width: 460px;
}