* {
    margin: 0;
    padding: 0;
    outline: 0;
    background: transparent;
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", Microsoft YaHei;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}

nav {
    height: 100px;
    width: 100%;
    display: flex;
    background-color: rgb(235, 115, 115);
}

nav img.one {
    height: 30px;
}

nav button {
    width: 200px;
    height: 20px;
}

nav ul {
    display: flex;
}

section {
    /* background-color: rgb(255, 123, 0); */
    width: 100%;
    /* height: 7250px; */
    position: relative;

}

section .whyLearn,
section .whyStem,
section .futureStar,
section .examRoute,
section .shanhaiACM,
section .fiveE,
section .competitionRules,
section .highQuality { 
    position: relative;
}

section .whyLearn .content,
section .whyStem .content,
section .futureStar .content,
section .examRoute .content,
section .shanhaiACM .content,
section .fiveE .content,
section .competitionRules .content,
section .highQuality .content {
    position: absolute;
    box-sizing: border-box;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -40%);
    -webkit-transform: translate(-50%, -40%);
    -moz-transform: translate(-50%, -40%);
    -ms-transform: translate(-50%, -40%);
    -o-transform: translate(-50%, -40%);
}


section h1 {
    position: absolute;
    left: 50%;
    transform: translate(-50%);
    font-size: 32px;
    font-weight: 600;
    color: #3C4467;
    line-height: 50px;
    letter-spacing: 1px;
    margin-top: 58px;
}

section img.line {
    position: absolute;
    height: 15px;
    left: 50%;
    transform: translate(-50%);
    margin-top: 108px;
}

section .rotation {
    position: relative;
    width: 100%;
    height: 680px;
    background: url("../img/cAdd/Img-1.png") no-repeat;
    background-position: center;
    /* background-size: 100%; */
}

section .rot-header {
    position: absolute;
    float: left;
    height: 328px;
    border-radius: 8px;
    opacity: 0.9;
    left: 50%;
    transform: translate(-80%);
    margin-top: 132px;
    -webkit-transform: translate(-80%);
    -moz-transform: translate(-80%);
    -ms-transform: translate(-80%);
    -o-transform: translate(-80%);
}




section .rotation .rot-header li {
    width: 100%;
    font-size: 56px;
    color: #ffffff;
}

section .rotation .rot-header li:nth-of-type(2),
section .rotation .rot-header li:nth-of-type(4) {
    width: 728px;
    height: 36px;
    background: #DD7D12;
    margin-top: -30px;
    border-radius: 18px;
}

section .rotation .rot-header li:nth-of-type(2) {
    width: 439px;

}

section .rotation .rot-header li:nth-of-type(3) {
    margin-top: 12px;
}

section .rotation .rot-header ul dl {
    margin-top: 60px;
    box-sizing: border-box;
    width: 305px;
    height: 214px;
    font-size: 24px;
    color: #FFFFFF;
    letter-spacing: 0;
    line-height: 40px;
    padding: 32px 68px 27px 63px;
    background-image: url("../img/cAdd/编组 13.png");
}
section .rotation .rot-header ul dl dd{
    line-height: 1.7;

}



/* 为什么要学斯坦星球C  */
section .whyLearn {
    background-color: #ffffff;
    height: 810px;
}

section .whyLearn .content {
    width: 1140px;
    height: 540px;
    background-image: url("../img/cAdd/whyLearnLi1.png");
}

section .whyLearn .content ul {
    box-sizing: border-box;
    width: 455px;
    height: 100%;
    /* background-color: rgb(72, 72, 72); */
    padding: 77px 0 77px 23px;
}

section .whyLearn .content ul li {
    display: flex;
    z-index: 2;
    margin-bottom: 20px;
    cursor: pointer;
    transition: all .3s linear;
    -webkit-transition: all .3s linear;
    -moz-transition: all .3s linear;
    -ms-transition: all .3s linear;
    -o-transition: all .3s linear;
}
section .whyLearn .content ul li:hover{
    transform: translateX(15px);
    -webkit-transform: translateX(15px);
    -moz-transform: translateX(15px);
    -ms-transform: translateX(15px);
    -o-transform: translateX(15px);
}

section .whyLearn .content ul li .left {
    margin: 5px 12px 0 0;

}

section .whyLearn .content ul li .right p:nth-of-type(1) {
    font-size: 24px;
    color: #FFFFFF;
}

section .whyLearn .content ul li .right p:nth-of-type(1)::after {
    content: "";
    width: 382px;
    height: 8px;
    display: block;
    opacity: 0.3;
    background: #FFC025;
    margin-top: -8px;
    z-index: 1 !important;
}

section .whyLearn .content ul li:nth-of-type(2) .right p:nth-of-type(1)::after {
    width: 166px;
}

section .whyLearn .content ul li:nth-of-type(3) .right p:nth-of-type(1)::after {
    width: 214px;
}

section .whyLearn .content ul li:nth-of-type(4) .right p:nth-of-type(1)::after {
    width: 286px;
}

section .whyLearn .content ul li .right p:nth-of-type(2) {
    opacity: 0.8;
    font-size: 16px;
    color: #FFFFFF;
    margin-top: 4px;
}

/* 为什么要学斯坦星球C++ */

section .whyStem {
    background-color: #F7F7F7;
    height: 652px;
}

section .whyStem .content {
    width: 1140px;
    height: 455px;
    display: flex;
    justify-content: space-between;


}

section .whyStem .content ul li {
    width: 312px;
    margin-bottom: 88px;

}

section .whyStem .content ul {
    padding-top: 90px;
    box-sizing: border-box;

}

section .whyStem .content ul li .title {
    font-size: 24px;
    color: #3C4467;

}

section .whyStem .content ul li .wrapper {
    margin-top: 16px;
    font-size: 16px;
    color: #3C4467;

}


/* <!-- 以终为始，成就未来之星 --> */

section .futureStar {
    background-color: #ffffff;
    height: 700px;
}

section .futureStar .content {
    width: 1164px;
    height: 400px;
    background-image: url("../img/cAdd/编组\ 4\(1\).png");
    background-size: contain;
}

/*  C++考学路线 */

section .examRoute {
    background-color: #F7F7F7;
    height: 1045px;
}

section .examRoute .content {
    width: 913px;
    height: 744px;
    background-image: url("../img/cAdd/编组.png");
    background-size: contain;
}

/* 上海交通大学ACM班*/

section .shanhaiACM {
    /* background-color: #F7F7F7; */
    height: 1190px;
}

section .shanhaiACM .content {
    width: 1180px;
    height: 944px;
}
section .shanhaiACM .content .imgBottom{
    width: calc(722px + 393px - 145px);
    height: 420px;
    margin-top: 65px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    display: flex;
}
section .shanhaiACM .content .imgBottom .left{
    width: 393px;
    height: 524px;
    background-image: url("../img/cAdd/编组\ 22.png");
    z-index: 1;
}
section .shanhaiACM .content .imgBottom .right{
    width: 722px;
    height: 420px;
    background-image: url("../img/cAdd/矩形.png");
    margin: 104px 0 0 -145px;
    padding: 56px 94px 72px 208px;
    box-sizing: border-box;
}
section .shanhaiACM .content .imgBottom .right ul{
    width: 420px;
    height: 292px;
    font-family: PingFangSC-Regular;
    font-size: 16px;
    color: #333333;
    letter-spacing: 0;
}
section .shanhaiACM .content .imgBottom .right ul li{
   margin-bottom: 15px;
   cursor: pointer;
}
section .shanhaiACM .content .imgBottom .right ul li::before{
    content: "";
    display: inline-block;
    height: 5px;
    width: 5px;
    border-radius: 50%;
    background-color: rgb(56, 56, 56);
    vertical-align: middle;
    margin-left: -15px;
    margin-right: 10px;
}
section .shanhaiACM .content .imgBottom .right ul li span{
   font-weight: bold;
   color: #445eb4;
}

/* 5E探究式教学法 */
section .fiveE {
    background-color: #F7F7F7;
    height: 900px;
}

section .fiveE .content {
    width: 640px;
    height: 670px;
}
section .fiveE .content img{
    display: block;
}
section .fiveE .content img:nth-of-type(2){
    margin: 57px 0 0 60px ;
}
/* 竞赛规划，理想未来更近一步 */
section .competitionRules {
    background-color: #F7F7F7;
    background-image: url("../images/cadd/competitionRulesnewbg.png");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    height: 850px;
}

section .competitionRules .content {
    width: 1080px;
    height: 564px;
    background-size: cover;
    border-radius: 30px;
    /* background-color: #787878; */
    background-image: url("./../img/python/competitionRules1.png");

}

section .competitionRules .content ul {
    position: absolute;
    margin: 26px 0 0 -50px;

}

section .competitionRules .content li {
    position: absolute;
    height: 48px;
    line-height: 48px;
    padding: 0 15px;
    font-size: 20px;
    color: #FFFFFF;
    letter-spacing: 0.62px;
    white-space: nowrap;
    margin-bottom: 30px;
    background-image: url("../img/python/libg.png");
    background-repeat: no-repeat;
    border-radius: 6px;
    cursor: pointer;
    transition: transform .3s linear;
    -webkit-transition: transform .3s linear;
    -moz-transition: transform .3s linear;
    -ms-transition: transform .3s linear;
    -o-transition: transform .3s linear;
}
section .competitionRules .content li:hover{
    transform: translateX(10px);
    -webkit-transform: translateX(10px);
    -moz-transform: translateX(10px);
    -ms-transform: translateX(10px);
    -o-transform: translateX(10px);
}

section .competitionRules .content li.active {
    background-color: #FF610E;
    background-image: none;
}

section .competitionRules .content li:nth-of-type(2) {
    margin-top: calc(48px + 10px);
}

section .competitionRules .content li:nth-of-type(3) {
    margin-top: calc(2*(48px + 10px));
}

section .competitionRules .content li:nth-of-type(4) {
    margin-top: calc(3*(48px + 10px));
}

section .competitionRules .content li:nth-of-type(5) {

    margin-top: calc(4*(48px + 10px));
}
section .competitionRules .content li:nth-of-type(6) {

    margin-top: calc(5*(48px + 10px));
}
section .competitionRules .content li:nth-of-type(7) {

    margin-top: calc(6*(48px + 10px));
}
section .competitionRules .content li:nth-of-type(8) {

    margin-top: calc(7*(48px + 10px));
}
section .competitionRules .content li:nth-of-type(9) {

    margin-top: calc(8*(48px + 10px));
}
/* 研发团队  经验资深，实战丰富 */
section .highQuality {
    background-color: rgb(255, 255, 255);
    height: 1400px;
}

section .highQuality .content {
    /* height: 1240px; */
    width: 1180px;
    /* background: #3b3b3b; */
    justify-content: space-between;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top:-40px
}

section .highQuality .content .teacherItem {
    width: 340px;
    cursor: pointer;
    /* margin-right: 80px; */
}

section .highQuality .content .teacherItem:hover {
    background-image: linear-gradient(180deg, rgba(252, 141, 47, 0.00) 0%, #F9651D 71%);
    border-radius: 0 0 50px 50px;
    -webkit-border-radius: 0 0 50px 50px;
    -moz-border-radius: 0 0 50px 50px;
    -ms-border-radius: 0 0 50px 50px;
    -o-border-radius: 0 0 50px 50px;
}

section .highQuality .content .teacherItem:hover .teacherContent {
    background-image: linear-gradient(187deg, #FC8D2F 0%, #F85415 100%);
}

section .highQuality .content .teacherItem:hover .teacherContent button {
    color: #fff;
}

section .highQuality .content .teacherItem:hover .teacherContent p {
    display: block !important;
    color: #fff;
}

section .highQuality .content .teacherItem:hover button:nth-of-type(2)::before {
    background-image: url("../img/python/编组(1).png");
}

section .highQuality .content .teacherItem .teacherContent {
    width: 340px;
    height: 200px;
    background-color: #F7F7F7 !important;
    opacity: 1;
    border-radius: 12px 40px 12px 40px;
    padding: 20px 20px 0px 36px;
    box-sizing: border-box;
    -webkit-border-radius: 12px 40px 12px 40px;
    -moz-border-radius: 12px 40px 12px 40px;
    -ms-border-radius: 12px 40px 12px 40px;
    -o-border-radius: 12px 40px 12px 40px;
}
section .highQuality .content .teacherItem:nth-of-type(4) .teacherContent,
section .highQuality .content .teacherItem:nth-of-type(5) .teacherContent,
section .highQuality .content .teacherItem:nth-of-type(6) .teacherContent {
   height: 260px;
}

section .highQuality .content .teacherItem button {
    outline: none;
    border: none;
}

section .highQuality .content .teacherItem button:nth-of-type(1) {
    width: 78px;
    font-family: PingFangSC-Medium;
    font-size: 26px;
    color: #3C4467;
    letter-spacing: 0;
    margin-right: 18px;
    vertical-align: sub;
    text-align: left;
}

section .highQuality .content .teacherItem button:nth-of-type(2) {
    height: 29px;
    border-radius: 6px;
    font-size: 16px;
    color: #3C4467;
    font-weight: bold;
}

section .highQuality .content .teacherItem button:nth-of-type(2)::before {
    content: "";
    display: inline-block;
    width: 16px;
    height: 18px;
    background-image: url("../img/python/编组.png");
    vertical-align: middle;
    margin-right: 8px;
}

section .highQuality .content .teacherItem .name {
    font-size: 26px;
    color: #3C4467;
}

section .highQuality .content .teacherItem .teacherContent ul,
section .highQuality .content .teacherItem .teacherContent p {
    width: 269px;
    height: 100px;
    font-size: 14px;
    color: rgba(60, 68, 103, 75);
    letter-spacing: 0;
    margin-top: 13px;
}

section .highQuality .content .teacherItem .teacherContent li {
    height: 20px;
    line-height: 20px;
}

section .highQuality .content .teacherItem .teacherContent li::before {
    content: "";
    display: inline-block;
    width: 5px;
    height: 5px;
    background-color: rgba(60, 68, 103, 75);
    margin-right: 10px;
    border-radius: 50%;
    vertical-align: middle;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    -ms-border-radius: 50%;
    -o-border-radius: 50%;
}
section .highQuality .content .teacherItem:nth-of-type(4),
section .highQuality .content .teacherItem:nth-of-type(5),
section .highQuality .content .teacherItem:nth-of-type(6){
    margin-top: 80px;
}


/* 点击立即体验的样式*/
.openclass{
    width: 100%;
    height: 100%;
    background: rgba(200,200,200,0.5);
    position: fixed;
    left: 0px;
    top: 0px;
    display:none;
    font-family: "PingFang SC Semibold";
    z-index: 999;
}

.jmzx22 {
    position: fixed;
    top: 40%;
    margin: auto;
    left: 40%;
    transform: translate(0, -50%);
    z-index:99;
}

.jmzx22 .login-box22 {
    float: right;
    width: 390px;
    height: 400px;
    background: #ffffff;
    border-radius: 10px;
    padding: 30px 40px 0;
}

.jmzx22  .login-box22 .close_div {

    position: absolute;
    top: 13px;
    right: 13px;
    width:30px;
}

.jmzx22 .login-box22 h2 {
    position: relative;
    text-align: center;
    font-size: 26px;
    color: #002749;
    font-weight: 700;
    letter-spacing:5px;
    margin-bottom: 28px;
    margin-top: 20px;
}

.jmzx22 .login-box22 h2 .xian {
    display: inline-block;
    vertical-align: middle;
    width: 18%;
    height: 1px;
    background: #002749;
}

.jmzx22 .login-box22 h2 .xian:first-child {
    margin-right: 20px;
}

.jmzx22 .login-box22 h2 .xian:last-child {
    margin-left: 20px;
}

.jmzx22 .login-box22 h2 img {
    position: absolute;
    top: -22px;
    left: 78px;
    display:none;
}

.jmzx22 .login-box22 h2 span {
    color: #f6792a;
    margin-right: 5px;
    font-size: 26px;
    font-weight: 700;
}

.jmzx22 .login-box22 ul li {
    width: 100%;
    border: 1px solid #f0f0f0;
    border-radius: 4px;
    padding: 0 10px;
    height: 40px;
    line-height: 38px;
    color: #333;
    margin-bottom: 15px;
}

.jmzx22 .login-box22 ul li img {
    width: 16px;
    height: 16px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 5px;
}

.jmzx22 .login-box22 ul li input {
    line-height: normal;
    font-size: 14px;
    margin-left: 5px;
    background: transparent;
}

.jmzx22 .login-box22 ul a {
    display: block;
    width: 100%;
    height: 40px;
    text-align: center;
    line-height: 40px;
    color: #fff;
    background: #f5650a;
    border-radius: 30px;
    margin-top: 25px;
    box-shadow: 0 0 5px #f5650a;
    letter-spacing:5px;
    font-size: 18px;
}

.jmzx22 .login-box22 ul select {
    width: 88%;
    background: transparent;
}
ul,li{
    list-style: none;
}
input, textarea, button, select {
    border: 0;
    outline: none;
    resize: none;
}
a {
    color: #3c4467;
    text-decoration: none;
    outline: none;
    cursor: pointer;
}
/*最下边代码*/
/*footer*/

.Floating_bg {
    background-image: url(../img/Img_Floating_bg.png);
    background-size: cover;
    background-repeat: no-repeat;
    height: 56px;
    padding-top: 11px;
    position: fixed;

    bottom: 0px;

    z-index: 1;

    width: 100%;
}

.Floating_bg ul {
    width: 1200px;
    margin: auto;
}

.Floating_bg ul li {
    width: 15%;
    margin-left: 28px;
    float: left;
    position: relative;
    color: #fff;
    border: 1px solid #fff;
    border-radius: 20px;
    padding: 0 15px;
}
.Floating_bg ul li p{
    margin: 0;
}

.Floating_bg ul li:first-child {
    border: 0;
    margin-left: 0px;
}

.Floating_bg ul li:nth-of-type(2) {
    margin-left: 15%;
}

.Floating_bg ul li:first-child img {
    position: absolute;
    bottom: -45px;
    border: 0;
    left: 0;
}

.Floating_bg ul li label {
    display: inline-block;
    vertical-align: middle;
    line-height: 30px;
    margin-bottom: 2px !important;
}

.Floating_bg ul li input {
    display: inline-block;
    vertical-align: middle;
    width: 70%;
    background: transparent;
}
.Floating_bg ul li select {
    display: inline-block;
    vertical-align: middle;
    width: 70%;
    background: transparent;
    color:#fff;
}

.Floating_bg ul li select  option{


    color:#000;
}

.Floating_bg ul li input {
    color: #fff;
}

.Floating_bg ul li p {
    line-height: 30px;
    text-align: center;
}

.Floating_bg ul li:last-child {
    background: #fff;
    color: #f5650a;
    box-shadow: 0 0 5px #ccc;
}


.cxx_pt_page {
    width: 100%;
    height: 700px;
    background-image: url("../images/cadd/ptbg.png");
    background-position: bottom;
    background-repeat: no-repeat;
    background-size: 100% 170px;
}

.cxx_pt_content {
    width: 70%;
    min-width: 1100px;
    height: 500px;
    margin: auto;
    position: relative;
    top: 130px;
    display: flex;
    justify-content: space-evenly;
}

.cxx_pt_img {
    width: 750px;
    height: 500px;
    background-image: url("../images/cadd/ptimg.png");
    background-position: center;
    background-repeat: no-repeat;
    background-size: 106%;
}

.cxx_pt_text {
    width: 400px;
    height: auto;
    color: #142057;
    line-height: 46px;
    font-size: 22px;
    margin-top: 50px;
}
.cxx_pt_icon{
    width: 50px;
    height: 50px;
    background-image: url("../images/cadd/pticon.png");
    background-position: center;
    background-repeat: no-repeat;
    background-size: 100%;
}