@charset "UTF-8";
* {
    padding: 0;
    margin: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    font-weight: normal;
    outline: none;
}

@font-face{font-family:'bell';font-style:normal;font-weight:normal;src:url('bell.woff') format("woff")}
@font-face{font-family:'futura';font-style:normal;font-weight:normal;src:url('futura.woff') format("woff")}

html,
body {
    color: #000;
    font-size: 17px;
    font-family:
    'futura',Microsoft YaHei,-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,"Helvetica Neue", Arial, "Open Sans", "Hiragino Sans GB", sans-serif;
    margin-left: auto !important;
    margin-right: auto !important;
    text-align: left;
    overflow-x: hidden;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
    color: #000;
}

img,
input {
    border: 0;
    outline: none;
}

body .clear {
    clear: both;
    height: 0 !important;
    width: 0 !important;
    border: none !important;
    margin: 0 !important;
    padding: 0 !important;
    float: none !important;
}

.clearfix:after {
    content: "";
    clear: both;
    display: block;
    overflow: hidden;
    font-size: 0;
    height: 0;
}

.clearfix {
    zoom: 1;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.px1440 {
    width: 1440px;
    max-width: 1440px;
    margin: 0 auto;
}

.pic {
    padding-top: 75%;
    position: relative;
    overflow: hidden;
}

.pic img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transition: all 1s;
    /* height: 520px; */
}

.pic img:hover {
    transform: scale(1.1);
}

@keyframes icon-yh {
    0% {
        transform: rotateZ(0);
    }
    10% {
        transform: rotateZ(10deg);
    }
    20% {
        transform: rotateZ(0);
    }
    30% {
        transform: rotateZ(-10deg);
    }
    40% {
        transform: rotateZ(0);
    }
    50% {
        transform: rotateZ(10deg);
    }
    60% {
        transform: rotateZ(0);
    }
    70% {
        transform: rotateZ(-10deg);
    }
    80% {
        transform: rotateZ(0);
    }
    90% {
        transform: rotateZ(10deg);
    }
    100% {
        transform: rotateZ(0);
    }
}

.wap {
    display: none !important;
}


/*头部*/

.head {
    height: 36px;
   
    background-size: 100% 100%;
    line-height: 36px;
    color: #fff;
}

.head>div {
    padding: 0 8%;
    font-size: 14px;
}

.head-r a {
    display: inline-block;
    margin-left: 30px;
    color: #fff;
}

.head-r a:hover {
    color: rgba(255, 255, 255, 0.85);
}

.top {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    transition: all 0.3s;
    border-top: 10px solid #9b0000;
    background: #fff;
}

.scrollDown .top {
    top: -150px;
}

.top.on {
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.top>div {
    margin: 0 60px;
}

.logo a {
    display: block;
    font-size: 0;
    line-height: 120px;
}

.logo img {
    vertical-align: middle;
}

.top-r {
    margin-left: 40%;
    padding-top: 40px;
    position: relative;
}

.top-r-t {
    position: absolute;
    right: 0;
    top: 40px;
    font-size: 0;
}

.top-r-en {
    display: inline-block;
    font-size: 18px;
    vertical-align: middle;
    line-height: 40px;
    margin-right: 40px;
}

.top-r-en a {
    display: block;
    width: 130px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    color: #fff;
    background: #2a3353;
    box-shadow: 0 0 10px rgba(41, 51, 82, 0.35);
    border-radius: 20px;
    position: relative;
    transition: all 0.3s;
    font-family: 'bell';
}

.top-r-en a:hover {
    background: #9b0000;
box-shadow: 0 0 10px rgba(155, 0, 0, 0, 0.35);
}

.top-r-en img:first-child {
    vertical-align: -3px;
    padding-right: 10px;
}

.top-r-en img:last-child {
    vertical-align: middle;
    padding-left: 5px;
}

.top-r-en a:hover img {
    opacity: 0.8;
}


/*搜索*/

.search {

    display: inline-block;
    position: relative;
    width: 40px;
    height: 40px;
    vertical-align: middle;
}

.search:before {
    content: '';
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, .5);
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    display: none;
}

.search:after {
    content: '';
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, .5);
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: none
}

.search .serinp {
    width: 0;
    position: absolute;
    top: 0;
    right: 0;
    transition: .3s;
    opacity: 0;
    visibility: hidden;
}

.search .serbtn {
    width: 40px;
    height: 40px;
    position: relative;
    text-align: center;
    line-height: 40px;
    font-size: 0;
}

.search .serbtn input {
    position: absolute;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    z-index: 3;
    background: #9b0000;
    border: 0;
}

.search .serinp input {
    width: 100%;
    height: 40px;
    line-height: 40px;
    background: #9B0000;
    border: 0;
    font-size: 14px;
    border-radius: 20px;
    color: #fff;
}

.search .serbtn i {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    display: inline-block;
    width: 20px;
    height: 20px;
    background: url(https://dbic.gsm.pku.edu.cn/img/fdj.png) no-repeat center;
    z-index: 4;
}

.search:hover .serinp {
    width: 220px;
    opacity: 1;
    visibility: inherit;
}

.search:hover .serinp input {
    padding: 0 15px;
}

input::-webkit-input-placeholder {
    color: #fff;
}

input::-moz-input-placeholder {
    color: #fff;
}

input::-ms-input-placeholder {
    color: #fff;
}


/*导航*/

.nav {
    height: 40px;
    line-height: 40px;
    margin-right: 235px;
}

.nav>ul {
    font-size: 0;
    text-align: right;
}

.nav>ul>li {
    display: inline-block;
    text-align: center;
    position: relative;
    margin: 0 3%;
}

.nav>ul>li:first-child {
    margin-left: 0;
}

.nav>ul>li>a {
    font-family: 'bell';
    display: inline-block;
    font-size: 20px;
    text-align: center;
    position: relative;
}

.nav>ul>li>span {
    display: inline-block;
    background: url(https://dbic.gsm.pku.edu.cn/img/nav-down.png) no-repeat;
    width: 16px;
    height: 11px;
    margin-left: 5px;
}

.nav>ul>li.on>div {}

.nav>ul>li>a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: #9b0000;
    transition: all 0.3s;
}

.nav>ul>li.on>a::after {
    width: 100%;
}

.nav>ul>li.active>a:after {
    width: 100%;
}

.nav>ul>li:hover>a {}

.nav>ul>li:hover>a:after {
    width: 100%;
}

.nav>ul>li>div {
    position: absolute;
    top: 100%;
    left: 0;
   
    
    min-width: 188px;
    z-index: 9999;
    display: none;
    padding-top: 10px;

}

.nav>ul>li>div>ul {
    overflow: hidden;
    background: #ffffff87;
    box-shadow: 0 0 10px rgba(0, 0, 0, .2);
    overflow: hidden;
    line-height: normal;
    /* padding-left: 20px; */
}

.nav>ul>li>div>ul>li a {
    display: block;
    font-family: 'bell';
    font-size: 14px;
    line-height: 40px;
    transition: .3s;
    text-align: left;
    padding-left: 10px;
}

.nav>ul>li>div>ul>li a:hover {
    background: #2a3353;
    color: #fff;
}


/*波浪线*/

.waveBox {
    width: 100%;
    height: 154px;
    margin-top: -154px;
    position: relative;
    overflow: hidden;
    z-index: 9;
}

.waveBox canvas {
    position: absolute;
    bottom: 0px;
    left: 0;
}

#myCanvas1 {
    z-index: 1;
    /* display: none; */
    position: absolute;
    bottom: 0;
}

#myCanvas2 {
    z-index: 2;
    /* display: none; */
}

#myCanvas3 {
    z-index: 3;
    /* display: none; */
}


/*底部*/

.foot {
    background: #2a3353;
    padding: 40px 0;
    margin-top: 100px;
}

.foot .px1440 {
    padding: 0 20px;
}

.foot {
    color: #fff;
}

.foot a {
    color: #fff;
}

.foot-l {
    width: 25.98%;
}

.foot-l h3 {
    font-family: 'bell';
    font-size: 18px;
    line-height: 22px;
    margin-bottom: 20px;
}

.foot-l p {
    font-size: 14px;
    line-height: 22px;
}

.foot-c {
    margin-left: 14.58%;
}

.foot-c h3 {
    display: inline-block;
    font-family: 'bell';
    font-size: 18px;
    border-bottom: 3px solid #a10f0f;
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.foot-c p a {
    display: block;
    font-size: 16px;
    line-height: 22px;
}

.foot-c p a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.foot-r h3 a {
    display: block;
    width: 120px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: #a10f0f;
    font-family: 'bell';
    font-size: 18px;
    color: #fff;
    margin-bottom: 20px;
}

.foot-r p a {
    display: block;
    font-size: 16px;
    line-height: 22px;
}

.foot-r p a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.foot-bqk {
    border-top: 1px solid #1c233d;
    margin-top: 50px;
    padding-top: 30px;
}

.foot-logo {
    font-size: 0;
}

.foot-logo img {
    vertical-align: middle;
    display: inline-block;
    margin-right: 30px;
}

.foot-bq {
    width: 56%;
    font-size: 14px;
    margin-top: 15px;
    /* text-align: right; */
}

@media screen and (max-width:1800px) {}

@media screen and (max-width:1500px) {
    .top-r {
        margin-left: 580px;
    }
    .top>div {
        margin: 0 20px;
    }
}

@media screen and (max-width:1440px) {
    .px1440 {
    overflow: hidden;
    width: auto;
    margin-left: 100px;
    margin-right: 100px;
    word-break: break-word;
    }
}

@media screen and (max-width:1400px) {
    .logo img {
        max-height: 40px;
    }
    .top-r {
        margin-left: 430px;
    }
    .top-r-en {
        margin-right: 20px;
    }
    .nav {
        margin-right: 188px;
    }
    .nav>ul>li>a {
        font-size: 18px;
    }
}

@media screen and (max-width:1200px) {
.logo img{max-height:35px;}
.top-r{margin-left: 360px;}
.nav{margin-right: 150px;}
.nav>ul>li{margin:0 2%;}
.top-r-en{margin-right: 10px;font-size:16px;}
.top-r-en a{width: 100px;}
.px1440{margin-left:50px;margin-right:50px;}

}

@media screen and (max-width:1024px) {
    body {
        padding-top: 63px !important;
    }
    .pc {
        display: none !important;
    }
    .m-top {
        max-width: 1920px;
        margin: 0 auto;
        position: fixed;
        right: 20px;
        top: 18px;
        width: 25px;
        height: 25px;
        z-index: 9999;
    }
    .wap {
        display: block !important;
    }
    .wap-menu {
        position: absolute;
        top: 0;
        right: 0;
        z-index: 99999;
        font-size: 0;
    }
    .wap-menu img {
        height: 25px;
    }
    .close-menu {
        display: none;
        position: absolute;
        right: 0;
        top: 0;
    }
    .m-head {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 3px solid #9B0000;
        box-shadow: 0 0 6px rgba(0, 0, 0, 0.2);
        background-size: 100% 100%;
        z-index: 999;
        padding: 10px 20px;
    }
    .m-logo {
        font-size: 0;
    }
    .m-logo a {
        font-size: 0;
        line-height: 40px;
        display: block;
    }
    .m-logo img {
        max-height: 40px;
        max-width: 80%;
        vertical-align: middle;
    }
    .m-tlink {
        padding: 10px 15px 0 15px;
    }
    .m-tlink a {
        font-size: 12px;
        margin-right: 20px;
        color: #9B0000;
        display: inline-block;
        line-height: 24px;
        background: #fff;
        line-height: 24px;
        border-radius: 20px;
        padding: 0 10px;
    }
    .m-tlink a img {
        vertical-align: -2px;
        padding-right: 5px;
        height: 14px;
    }
    .m-tlink a img:last-child {
        height: 7px;
        vertical-align: middle;
    }
    .m-search {
        margin: 0 15px;
        padding-right: 50px;
        padding-left: 10px;
        padding-top: 5px;
        padding-bottom: 5px;
        position: relative;
        line-height: 35px;
        /* background: #fff; */
        margin-top: 15px;
        margin-bottom: 15px;
        border: 1px solid rgba(255, 255, 255, 0.8);
        border-radius: 20px;
    }
    .m-search input[type="text"] {
        display: block;
        width: 100%;
        line-height: 25px;
        background: none;
        color: #fff;
        font-size: 12px;
    }
    .m-search input[type="text"]::placeholder {
        color: rgba(255, 255, 255, 0.5);
    }
    .m-search input[type="image"] {
        position: absolute;
        right: 10px;
        top: 10px;
        height: 15px;
    }
    .m-nav {
        position: fixed;
        top: 63px;
        right: -100%;
        bottom: 0;
        z-index: 999;
        background: #9B0000;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
        overflow-y: scroll;
        width: 100%;
        max-width: 375px;
    }
    .m-nav .top-r {
        color: #fff;
        padding-left: 15px;
    }
    .m-nav ul {
        padding: 0 15px;
        /* border-top: 1px solid rgba(255, 255, 255, 0.2); */
    }
    .m-nav ul li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        position: relative;
    }
    .m-nav ul li>span.on {
        transform: rotateZ(90deg);
    }
    .m-nav ul li ul {
        display: none;
    }
    .m-nav ul li ul li {
        border: none;
    }
    .m-nav>ul>li a {
        display: block;
        font-size: 16px;
        line-height: 20px;
        padding: 15px 0;
        position: relative;
        color: #fff;
    }
    .m-nav>ul>li ul li a {
        padding: 10px 0;
        font-size: 14px;
    }
    .m-nav>ul>li>span {
        position: absolute;
        width: 20px;
        height: 20px;
        background: url(https://dbic.gsm.pku.edu.cn/img/m-nav_down.png) no-repeat;
        background-size: 14px 14px;
        background-position: center center;
        right: 0;
        top: 15px;
        cursor: pointer;
        display: block;
        color: #fff;
        transition: all 0.3s;
    }
    .foot {
        margin-top: 30px;
        padding: 20px 0;
    }
    .foot-l h3,
    .foot-c h3,
    .foot-r h3 a {
        font-size: 16px;
    }
    .foot-r h3 a {
        width: 110px;
        height: 32px;
        line-height: 32px;
    }
    .foot-l p {
        font-size: 12px;
    }
    .foot-c p a,
    .foot-r p a {
        font-size: 14px;
    }
    .foot-bqk {
        margin-top: 30px;
        padding-top: 20px;
    }
    .foot-bq {
        font-size: 14px;
        margin-top: 10px;
    }
    .foot-logo img {
        margin-right: 15px;
        max-height: 45px;
    }

.px1440{margin-left:20px;margin-right:20px;}


}

@media screen and (max-width:768px) {
    .foot-l,
    .foot-c,
    .foot-r {
        float: none;
        width: auto;
        text-align: center;
    }
    .foot-c,
    .foot-r {
        margin-top: 20px;
    }
    .foot-c h3 {
        margin-bottom: 10px;
        padding-bottom: 8px;
    }
    .foot-c {
        margin-left: 0;
    }
    .foot-r h3 a {
        margin: 0 auto;
    }
    .foot-bqk {
        margin-top: 20px;
    }
    .foot-logo,
    .foot-bq {
        float: none;
        width: auto;
        text-align: center;
    }
    .foot-logo img {
        max-height: 40px;
    }
}

@media screen and (max-width:480px) {}

@media screen and (max-width:375px) {}

@media screen and (max-width:320px) {}



#asideNav {
	position: fixed;
	right: 0px;
	top: 50%;
	transform: translateY(-50%);
	z-index: 9991;
	background-color: #9b0000;
	border-top-left-radius: 10px;
	border-bottom-left-radius: 10px;
	z-index: 999999;
}

#asideNav ul {
	width: 110px;
	padding: 20px 0;
}

#asideNav li {
	cursor: pointer;
	text-align: center;
	cursor: pointer;
	border-bottom: 1px solid #890000;
	border-radius: 4px;
	text-align: center;
	color: #fff;
	position: relative;
	overflow: inherit !important;
}

#asideNav li a {
	display: block;
	text-align: center;
	padding: 15px 0;
}

#asideNav li a:hover {
	background: #890000;
}

#asideNav li.active,
#asideNav li:hover {
	color: #fff;
}

#asideNav li p {
	color: #fff;
	font-size: 14px;
	margin-top: 10px;
}

#asideNav li p a{font-size:16px;}

#asideNav li.gb {
	border-bottom: 0;
	/*margin-top: 15px;*/
}

#asideNav li.gb a {
	background: rgba(255, 255, 255, 0.3);
	width: 28px;
	height: 28px;
	border-radius: 50%;
	margin: 0 auto;
	position: relative;
}

#asideNav li.gb a img {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translateX(-50%) translateY(-50%) rotate(180deg);
	vertical-align: middle;
}

#asideNav li.gb.on {
	margin-top: 15px;
}

#asideNav li.gb.on a img {
	transform: translateX(-50%) translateY(-50%);
}

#asideNav ul li:first-child,
#asideNav ul li:nth-child(2),
#asideNav ul li:nth-child(3),
#asideNav ul li:nth-child(4) {
	display: none;
}

#asideNav li .cl-li{
	position: absolute;
	right: 110px;
	top: 0;
	width: 0;
	height: 100%;
	background: rgba(155,0,0,0.8);
	transition: all 0.5s;
	opacity: 0;
	overflow: hidden;
}
#asideNav li .cl-li p{
	margin-top: 0;
}
#asideNav li .cl-li p a{
	color: #fff;
	padding: 0;
	line-height: 33px;
}
#asideNav li:hover .cl-li{
	min-width: 200px;
	opacity: 1;
	overflow: visible;
}
#asideNav li .cl-li2 p{
	margin-top: 10px;
}

@media screen and (max-width: 1024px) {
	#asideNav ul {
		width: 80px;
		padding: 10px;
	}
	#asideNav li a {
		padding: 10px 0;
	}
	#asideNav li a img {
		max-height: 24px;
	}
	#asideNav li p {
		font-size: 12px;
	}
	#asideNav li.gb.on {
		margin-top: 8px;
	}

#ny-main{padding-top: 30px;}
.xg-list{margin-bottom: 80px;}
#asideNav li .cl-li{height:134%;}

}


.answer-r form{float:none;}
.search input::-webkit-input-placeholder { /* WebKit, Blink, Edge */

    color :#fff !important;

}

 :-moz-placeholder { /* Mozilla Firefox 4 to 18 */

   color :#fff  !important;

}

::-moz-placeholder { /* Mozilla Firefox 19+ */

   color : #fff  !important;

}

.search input:-ms-input-placeholder { /* Internet Explorer 10-11 */

   color : #fff  !important;

}

.search input::-ms-input-placeholder { /* Microsoft Edge */

   color : #fff  !important;

}