@charset "utf-8";
/* CSS Document */
html{background:#FFF;font-size:62.5%; /* 10÷16=62.5% */}
body{font-size:14px;font-size:1.4rem ; /* 14÷10=1.4 */color: #333;font-family:'Microsoft YaHei',SimSun,SimHei ,"STHeiti Light",STHeiti,"Lucida Grande", Tahoma,Arial, Helvetica, sans-serif;}
html,body,address,blockquote,div,dl,form,h1,h2,h3,h4,h5,h6,ol,p,pre,table,ul,dd,dl,dt,li,tbody,td,tfoot,th,thead,tr,button,del,ins,map,object,a,abbr,acronym,b,bdo,big,br,cite,code,dfn,em,i,img,kbd,q,samp,small,span,strong,sub,sup,tt,var,legend,fieldset{margin:0px;padding:0px; -webkit-font-smoothing: subpixel-antialiased;}
table{border-collapse:collapse;border-spacing:0;width:100%;}
fieldset,img{border:0;}
img,object{max-width:100%;/*height:auto;*/width:auto\9;/* for ie8 */-ms-interpolation-mode: bicubic;}
a{outline:none;blr:expression(this.onFocus=this.blur());text-decoration:none;color: #333;}
a:hover{color: #003b90;text-decoration: none;}
input[type='button']{outline:none;border:0 none;background-color:transparent;cursor:pointer;}
address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:400;}
ul,ol,li{list-style:none outside none;}
.tc{text-align:center !important;}
.tl{text-align:left  !important;}
.tr{text-align:right  !important;}
.pa{position: absolute;}
.pr{position: relative;}
h1,h2,h3,h4,h5,h6{font-size:100%;}
q:before,q:after{content:'';content:none;}
input,textarea,select{font-weight:inherit;}
input,select,textarea,button {vertical-align:middle}

.clearFix{*zoom:1;clear:both;}
.clearFix:after{content: '';display: block;clear:both;}
.clear{width: 100%;overflow:hidden;}
.imgResponsive{width: 100%;height: 0;padding-bottom: 56.25%;overflow:hidden;display: block;}
.imgResponsive img{width: 100%;}
/*头部样式*/
.bjtu-header{width:100%;min-width: 300px; height:auto; z-index:990;position: fixed;top: 0;left: 0;transition: all 0.3s ease-in-out;}
.black_bg01,.mobile_bg02{position: fixed;background-color:#000;opacity: 0.7;width:100%;height:100%;display: none;filter: alpha(opacity=70);z-index: 90;}


.bjtu-top{background-color:#8C0000;}
.bjtu-top > div{width: 1200px;margin:0 auto;}
.bjtu-logo{ width: auto;float: left;padding:12px 0 13px;transition: margin 0.3s ease-in-out;position: relative;z-index: 200;}
.bjtu-logo a{}
.bjtu-topNav{float: right;padding-top: 17px;}
.bjtu-topNav a{display: inline-block;*display: inline;*zoom:1;background-color: #004d92;height: 25px;border-radius: 15px;line-height: 23px;padding:0 10px;font-size: 14px;font-weight: bold;margin:0 4px;transition: all 0.3s ease-in-out;}
.bjtu-topNav .bjtu-serBtn{width: 32px;height: 32px;text-align: center;background-color: #f6ad3c;line-height: 32px;color:#fff;font-size: 18px;padding:0;font-weight: normal;margin-right: 0;border-radius: 5px;}
.bjtu-topNav a.a1{color:#f6ad3c;}
.bjtu-topNav a.a2{color:#51c200;}
.bjtu-topNav a.a3{color:#00ccbe;}
.bjtu-topNav a.a4{color:#fe5635;}
.bjtu-topNav a.a1:hover{color:#fff;background-color: #f6ad3c}
.bjtu-topNav a.a2:hover{color:#fff;background-color: #51c200}
.bjtu-topNav a.a3:hover{color:#fff;background-color: #00ccbe}
.bjtu-topNav a.a4:hover{color:#fff;background-color: #fe5635}
.bjtu-topNav a.a5{background:none;font-weight: normal;color:#fff;margin:0 30px;}
.bjtu-nav{height:46px;position: relative;transition: all 0.3s ease-in-out;}
.bjtu-nav:before{content: '';width: 100%;height: 100%;background-color: #830C04;opacity: 0.6;filter: alpha(opacity=60);position: absolute;left: 0;top: 0;z-index: 0}
.bjtu-nav > ul{width: 1200px;margin:0 auto;height:46px;position: relative;z-index: 2;transition: all 0.3s ease-in-out;}
.bjtu-nav li{width: 11.1%;float:left;text-align: center;position: relative;}
.bjtu-nav li > a{color:#fff;line-height: 46px;display: block;height: 46px;font-size: 16px;font-weight: bold;}
.bjtu-nav ul li.on > a,.bjtu-nav ul li:hover > a{color:#005bac;position: relative;z-index: 3}
.bjtu-nav ul li:before,.bjtu-nav ul li:after{content: '';width: 0;position: absolute;left: 50%;top: 0;transition: all 0.3s ease;}
.bjtu-nav ul li:before{height: 4px;background-color: #eea200;z-index: 1}
.bjtu-nav ul li:after{height: 46px;background-color: #cce1fa;z-index: 0;width: 0}
.bjtu-nav ul li.on:before,.bjtu-nav ul li.on:after{left: 0;width: 100%;}
.bjtu-nav ul li.on .bjtu-subNav{display: block;}
.bjtu-subNav{display: none;position: absolute;left:0;top:46px;display: none;width:150%;font-size: 14px;*background:url(../../images/img2019/subNav_bg.png) repeat;}
.sub_nav { display: none; width: 100%; position: absolute; left: 100%; bottom: 0px; background: #d6e7fb; transition: 0.5s; transform: rotateX(360deg);}
.ph_sub_nav { display: none; margin: 0 0 0 10px; }
.mobile_subNav dd.current .ph_sub_nav { display: block; }
.bjtu-subNav dd.current .sub_nav{ display: block; }
.bjtu-subNav:before{content: '';width: 100%;height: 100%;background-color:#cce1fa;opacity: 0.8;filter: alpha(opacity=80);position: absolute;left: 0;top: 0;z-index: 0}
.bjtu-subNav dd{position: relative;z-index: 3;text-align: left;}
.bjtu-subNav dd>i { width:33px; height:33px; position:absolute; right:0px; top:0px; }
.bjtu-subNav dd>i:before { content:''; position:absolute; width:10px; height:2px; background:#005bac; left:0px; top:15px; }
.bjtu-subNav dd>i:after { content:''; position:absolute; width:10px; height:2px; background:#8C0000; left:0px; top:15px; transform:rotate(90deg) }
.bjtu-subNav dd:hover>i:after{ display:none; }
.bjtu-subNav a{color:#4c4c4c;padding:5px 15px;display: block;line-height: 23px;}
.bjtu-subNav a:hover{background-color:#669ccc;color:#fff;}
.bjtu-header.currents{height: 60px;line-height: 60px;position: fixed;background:#8C0000;box-shadow: 0 2px 6px rgba(0,0,0,0.4)}
.bjtu-header.currents .bjtu-topNav,.bjtu-header.currents .bjtu-nav::before{display: none;}
.bjtu-header.currents .bjtu-top{width: auto;}
.bjtu-header.currents .bjtu-logo{width: 160px;position: absolute;top: 0;left: 50%;margin-left: -600px;padding-top: 8px;}
.bjtu-header.currents .bjtu-nav{height: 60px;line-height: 60px;width: 1200px;margin:0 auto;}
.bjtu-header.currents .bjtu-nav > ul{margin-left: 180px;width: auto;height: 60px;}
.bjtu-header.currents .bjtu-nav li{background:none;height: 60px;}
.bjtu-header.currents .bjtu-nav li > a,.bjtu-header.currents .bjtu-nav ul li::after{height: 60px;line-height: 60px;}
.bjtu-header.currents .bjtu-subNav{top:60px;}
.bjtu-subNav2{left: -50%;}
.bjtu-headerr.currents .nav ul li > a{}
.flipInY  {
  -webkit-animation-name: flipInY ;
  animation-name: flipInY ;
  animation-duration: 0.4s;
  -webkit-animation-duration: 0.4s;

  animation-timing-function: ease-in-out;
  -webkit-animation-timing-function: ease-in-out;

  visibility: visible !important;
  display: block;
}


@keyframes flipInY  {
  from {
    -webkit-transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
    transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 0;
    transform: scaleX(0);
  }


  to {
    -webkit-transform: perspective(400px);
    transform: perspective(400px);
     opacity: 1;
      transform: scaleX(1);
  }
}

#ser{width:0;overflow: hidden;display: inline-block;*display: inline;*zoom:1;border-radius: 15px;vertical-align: middle;transition: all 0.35s ease-in-out}
#ser.open{width: 200px;border:1px solid #fff;background: none;}
.bjtu-ser{width:100%; height:28px; line-height:28px;z-index:9999994; margin:0 auto;position: relative;}
.search input{position:absolute;  height: 28px;line-height:28px; color:#262626; border:none; background:none; top:0px; padding-left:0px; }
.search input.notxt{color:#a4a4a4; padding:0 0 0 7px;width:82%;}
.search input.notxt1 {position: absolute;width: 15%;height:28px;right:0;border: none;cursor:pointer; overflow: hidden;padding-right:0;color:#fff;border:none;background:url(../../images/img2019/search.svg) no-repeat center;background-size: 16px auto}

.header.current .mobile,.header.current .logo{display: none;}

.goTop {position: fixed;bottom: 40px;right: 20px;z-index: 9999999;color: #fff;text-align: center;font-size: 26px;transition: none;background-color:#700E0D;width: 50px;height: 50px;line-height: 50px;text-align: center;display: none;}
.goTop:hover{color:#fff;background-color:#e46856;}
/*手机端导航*/
.mobile{width: 100%;position:absolute;height: 42px;display: none;top:60px;right: 0;z-index: 99}
.mobile-inner-header{width:100%;
    height: 42px;position: absolute;top: 0px;right: 0px;z-index: 2}
    .mobile-inner-header-icon{
  color: #ffffff; height: 40px;font-size:25px;text-align: center;
  float:right;width: 40px;position: relative;
  -webkit-transition: background 0.5s;
  -moz-transition: background 0.5s;
  -o-transition: background 0.5s;
  transition: background 0.5s;
}
.mobile-inner-header-icon:hover{
  opacity:0.8;
  cursor: pointer;
}
.mobile-inner-header-icon span{
  position: absolute; left: calc((100% - 25px) / 2);
  top: calc((100% - 1px) / 3);  width: 25px;  height: 2px;  background-color: #fff;}
/*.mobile-inner-header-icon span:nth-child(1){transform: translateY(4px) rotate(0deg);}
.mobile-inner-header-icon span:nth-child(2){transform: translateY(-4px) rotate(0deg);}
.mobile-inner-header-icon-click span:nth-child(1){animation-duration: 0.5s; animation-fill-mode: both;animation-name: clickfirst;}
.mobile-inner-header-icon-click span:nth-child(2){animation-duration: 0.5s; animation-fill-mode: both;animation-name: clicksecond;}
*/
.mobile-inner-header-icon-click{right: 10%;}
.mobileLink{display: block;padding:10px 0;}
.mobileLink dd{line-height: 20px;text-align: center;font-size: 1.2rem;padding:0 35px;}
.mobileLink dd a{color:#fff;padding:0 10px;display: inline-block;width: auto;position: relative;line-height: 24px;font-size: 12px;}
.mobileLink dd a:first-child{}
.mobileLink a:before{opacity: 0.2;}
.mobile-inner-header-icon{color: #fff; height: 31px;text-align: left;float:right;width: 50px;position: relative; cursor: pointer;margin-right: 10px;font-weight: bold;text-align: right;}
.mobileLink a:last-child:before{display: none;}
.mobile-inner-header-icon-out span{width: 22px;height: 2px;background-color:#fff;display: block;}
.mobile-inner-header-icon-out span:nth-child(1){
    animation-duration: 0.5s;
    animation-fill-mode: both;
    animation-name: outfirst;
    }
.mobile-inner-header-icon-out span:nth-child(2){
    animation-duration: 0.5s;
    animation-fill-mode: both;
    animation-name: outsecond;
    }
.mobile-inner-header-icon-out span:nth-child(2){
    animation-duration: 0.5s;
    animation-fill-mode: both;
    animation-name: outthird;
    }
.mobile-inner-header-icon span:nth-child(1){transform: translateY(4px) rotate(0deg);}
.mobile-inner-header-icon span:nth-child(2){transform: translateY(-4px) rotate(0deg);}
.mobile-inner-header-icon span:nth-child(3){transform: translateY(-4px) rotate(0deg);}
.mobile-inner-header-icon-click span:nth-child(1){animation-duration: 0.5s; animation-fill-mode: both;animation-name: clickfirst;}
.mobile-inner-header-icon-click span:nth-child(2){animation-duration: 0.5s; animation-fill-mode: both;animation-name: clicksecond;}
.mobile-inner-header-icon-click span:nth-child(3){animation-duration: 0.5s; animation-fill-mode: both;animation-name: clickthird;}
@keyframes clickfirst {
  0% {
      transform: translateY(4px) rotate(0deg);

  }

  100% {
    transform: translateY(0) rotate(45deg);
  }
}

@keyframes clicksecond {
  0% {
      transform: translateY(-4px) rotate(0deg);
  }

  100% {
    transform: translateY(0) rotate(-45deg);
  }
}

@keyframes clickthird {
    0% {
     opacity: 0
  }

  100% {
   opacity: 0
  }
}
.mobile-inner-header-icon-out span:nth-child(1){
    animation-duration: 0.5s;
    animation-fill-mode: both;
    animation-name: outfirst;
    }
.mobile-inner-header-icon-out span:nth-child(2){
    animation-duration: 0.5s;
    animation-fill-mode: both;
    animation-name: outsecond;
    }
.mobile-inner-header-icon-out span:nth-child(3){
    animation-duration: 0.5s;
    animation-fill-mode: both;
    animation-name: outthird;
    }
@keyframes outfirst {
  0% {
    transform: translateY(0) rotate(-45deg);
  }

  100% {
    transform: translateY(-4px) rotate(0deg);
  }
}



@keyframes outsecond {
  0% {
    transform: translateY(0) rotate(45deg);
  }

  100% {
    transform: translateY(4px) rotate(0deg);
  }
}
@keyframes outthird {
  0% {
    transform: translateY(0) rotate(90deg);
  }

  100% {
    transform: translateY(12px) rotate(0deg);
  }
}

.mobile-inner-nav{  width: 100%; position: absolute;top: -60px;left: 0px;padding-top: 120px;padding-bottom: 25px;display: none;}
.mobile_bg02{background:#00a2e6;
  background: -webkit-linear-gradient(left, #005bac , #1e7fd6); /* Safari 5.1 - 6.0 */
  background: -o-linear-gradient(right, #005bac, #1e7fd6); /* Opera 11.1 - 12.0 */
  background: -moz-linear-gradient(right, #005bac, #1e7fd6); /* Firefox 3.6 - 15 */
  background: linear-gradient(to right, #005bac , #1e7fd6); /* 标准的语法 */;opacity: 1;top: 0}
.mobile-inner-nav a{display: inline-block;line-height: 45px;text-decoration: none;  width: 100%;font-size: 1.6rem; -webkit-transition: all 0.5s;   -moz-transition: all 0.5s;-o-transition: all 0.5s;    transition: all 0.5s; position: relative;color:#fff;}
.mobile-inner-nav li a:before,.mobile_search:before{width: 100%;height: 1px;background-color: #fff;opacity: 0.2;position: absolute;left: 0;bottom: 0;content: '';}
.mobile-inner-nav ul{margin:0 auto;width: 80%;}
.mobile-inner-nav li{position: relative;padding: 0 20px;}
.mobile-inner-nav li a{text-indent: 15px;}
.mobile-inner-nav li strong{color:#fff;position: absolute;right:20px;top:0;font-size: 2.5rem;cursor: pointer;width: 40px;height: 45px;text-align: center;line-height: 40px;-webkit-transition: all 0.5s;   -moz-transition: all 0.5s;
    -o-transition: all 0.5s;    transition: all 0.5s; }
	.mobile-inner-nav li strong.on { transform:rotate(90deg); }
.mobile-inner-nav a{-webkit-animation-duration: 0.5s;animation-duration: 0.5s;-webkit-animation-fill-mode: both;animation-fill-mode: both;-webkit-animation-name: returnToNormal;animation-name: returnToNormal;}
.mobile-inner-nav dd span.on { transform:rotate(45deg); position:absolute; color:#fff; font-size: 25px;width: 30px;height: 35px;text-align: center;right: 0px; }
@-webkit-keyframes returnToNormal {
      from {
        opacity: 0;
        -webkit-transform: translate3d(0, 100%, 0);
        transform: translate3d(0, 100%, 0);
      }

      to {
        opacity: 1;
        -webkit-transform: none;
        transform: none;
      }
    }

    @keyframes returnToNormal {
      from {
        opacity: 0;
        -webkit-transform: translate3d(0, 100%, 0);
        transform: translate3d(0, 100%, 0);
      }

      to {
        opacity: 1;
        -webkit-transform: none;
        transform: none;
      }
    }
.mobile_subNav{display: none;padding-left:10px;opacity: 0.8}
.mobile-inner-nav li dd { position:relative; }
.mobile-inner-nav li span { position:absolute; color:#fff; font-size: 25px;width: 30px;height: 35px;text-align: center;right: 0px; cursor:pointer;}
.mobile-inner-nav li dd a{font-size: 1.4rem;opacity: 0.6;height: 35px;line-height: 35px;}
.mobile_search{clear: both;position: relative;height: 36px;margin:10px auto 0;border-radius: 30px;overflow: hidden;width: 80%;}
.mobile_search input.notxt{width: 90%;color:#fff;margin-left:55px;border:none;}
.mobile_search input.notxt1{width: 55px;background-color:#fff;right:auto;left:0;background:url(../../images/img2019/searchBtn.svg) no-repeat center center;border:none;}

/*footer*/
.bjtu-wrapFooter{background:url(../../images/img2019/footer_bg.jpg) no-repeat top center #065eb1;}
.bjtu-footer{width: 1200px;margin:0 auto;padding:45px 0;}
.bjtu-footerLf{width: 29%;float: left;line-height: 36px;color:#fff;}
.bjtu-footerLf span{display: block;}
.bjtu-footerRt{width: 22%;float: right;color:#fff;line-height: 30px;padding-top: 20px;}
.bjtu-footerLogo{height: 0;position: relative;margin:0 auto;width: 314px;}
.bjtu-footerLogo img{}


@media screen  and (max-width:1386px) {
  .bjtu-top > div,.bjtu-nav > ul,.bjtu-footer,.bjtu-header.currents .bjtu-nav{width: 1000px;}
  .bjtu-footerLf{line-height: 1.5;}
  .bjtu-footerLf span{padding-bottom: 10px;}
  .bjtu-header.currents .bjtu-logo{margin-left: -500px;}

}

@media screen  and (max-width:1020px) {
  .bjtu-top > div,.bjtu-nav > ul{width: auto;padding-left: 15px;padding-right: 15px;}
  .bjtu-wrapFooter{background-size: cover;}
  .bjtu-footer{width: auto;padding-left: 25px;padding-right: 25px;}
}

@media screen  and (max-width:992px) {
  .bjtu-nav,.bjtu-topNav{display: none;}
  .mobile{display: block;top: 26px;}
  .bjtu-logo{width: 200px;}
  .bjtu-header{position: static;}
  .bjtu-footerLogo{width: 220px;}
  .bjtu-footerRt{padding-top:0;line-height: 1.5;}



}
@media screen  and (max-width:767px) {
  .bjtu-footer{width: auto;padding:25px 15px;}
  .bjtu-footerLogo{height: auto;padding-bottom: 10px;}
  .bjtu-footerLf,.bjtu-footerRt{width: 100%;text-align: center;}
  .bjtu-footerLf span{display: inline-block;}
  .bjtu-footer{font-size: 12px;}
}

@media screen and (max-width:480px) {
 .mobile-inner-header-icon-click{right: 0}
 .mobile-inner-nav ul,.mobile_search{width: 100%;}
 .mobile-inner-nav a{font-size: 1.5rem;}
 .mobile-inner-nav{padding-top:90px;}
 .bjtu-logo{width: 100px;}
 .mobile{top: 12px;}
}