/*root styles*/
:root{
    font:normal normal normal 16px/1 '微软雅黑','Microsoft YaHei Bold',sans-serif;
}
html,body{
    width:100%;
    height:100%;
    color:#323232;
}
*,*::before,*::after{box-sizing: border-box;margin:0;padding:0;}
a{text-decoration: none;color:#323232;}
a[role=button]{
    background: linear-gradient(to right,#01A4FF,#4255FC);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width:600px;
    height:60px;
    border-radius: 30px;
    font-size:24px;
    line-height: 60px;
    font-weight: 700;
    text-align: center;
    color:#FFFFFF;
    box-shadow:0 0 8px rgba(83,6,6,.14);
    transition: all .25s ease-in;
}
a[role=button]:hover{
    box-shadow: 0 5px 10px rgba(215, 140, 10, 0.35);
    transform:translateY(-5px);
    cursor: pointer;
}
dl,ul,ol,menu{list-style:none;margin:0;padding:0;}

/*header style*/
body > header {
    background:#FFFFFF;
    position: fixed;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    top:0;
    left:0;
    width:100%;
    height: 80px;
    z-index:999999;
    padding:0 calc(50% - 600px);
    box-shadow: 0 5px 10px rgba(200,200,200,.35);
}
body > header img{
    height:40px;
    cursor: pointer;
}
body > header > nav{
    display: flex;
    justify-content: space-between;
    width: 500px;
    padding:0 50px;
}
nav[role=navigation] > a{
    position:relative;
    font-size:20px;
    letter-spacing: 1px;
}
nav[role=navigation] > a:hover{
    color:#0780FE;
}
nav[role=navigation] > a::after{
    content: "";
    background-color: #0780FE;
    position: absolute;
    left:50%;
    transform:translateX(-50%);
    bottom:-10px;
    width:0;
    height:3px;
    border-radius:2px;
    transition: all .2s ease-in;
}
nav[role=navigation] > a:hover::after,nav[role=navigation] > a:active::after{
    width:100%;
}
body > header > code{
    display: flex;
    align-items: center;
    height:30px;
    color:#0780FE;
    font: normal bold 26px/35px Alibaba-PuHuiTi-B, Alibaba-PuHuiTi,Arial, serif;
}
body > header > code > img{
    height:36px;
}

/* heading styles */
h2[role=heading]{
    background: transparent;
    display:flex;
    align-items: center;
    width:fit-content;
    height: 55px;
    padding:0 50px;
    font-size:38px;
    color:#181448;
    margin-bottom:40px;
    text-align: center;
}
/* banner style */
body > figure[role=banner]{
    background:linear-gradient(45deg,#D4EAFF,#D4EAFF);
    position: relative;
    width:100%;
    min-width:1200px;
    margin-top:80px;
    padding-top:400px;
    overflow:hidden;
}
body > figure[role=banner] > img{
    position: absolute;
    top:0;
    left:50%;
    transform:translateX(-50%);
    width:1920px;
    object-position: center;
}
body > figure[role=banner] > figcaption{
    background: rgba(255,255,255,1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding:0 calc(50% - 510px);
    font-size:22px;
}
body > figure[role=banner] > figcaption> time::before{
    background:#03A3FF;
    display: inline-block;
    content:"开课时间";
    width: 126px;
    height: 34px;
    line-height:34px;
    text-align: center;
    border-radius: 5px;
    margin-right:20px;
    color:#FFFFFF;
}
body > figure[role=banner] > figcaption> time::after{
    content:attr(datetime);
    margin-left:20px;
}
body > figure[role=banner] > figcaption > button{
    background: linear-gradient(to right,#01A4FF,#4355FC);
    width: 172px;
    height: 34px;
    line-height: 34px;
    border-radius: 20px;
    font-size:22px;
    border:0;
    color:#FFFFFF;
    outline:none;
    cursor: pointer;
}

/*footer styles*/
body > footer{
    background: #323232;
    display: flex;
    justify-content: center;
    align-items: center;
    gap:5px;
    width:100%;
    min-width:1200px;
    color:#FFFFFF;
    font-size:14px;
    height:60px;
}

/* module styles */
section[data-module]{
    display: flex;
    width:100%;
    min-width: 1200px;
    padding:50px calc(50% - 600px);
    flex-direction: column;
    align-items: center;
}

/* module summary styles */
section[data-module=summary]{
    background:#F9FBFC;
}
section[data-module=summary] > article{
    position: relative;
    width: 1130px;
}
section[data-module=summary] menu{
    display: flex;
    position: absolute;
    left:0;
    top:0;
    z-index:999;
}
section[data-module=summary] menu > li{
    padding:6px 20px;
    font-size:24px;
    border:1px solid #CACACB;
    border-radius: 20px;
    margin-right:20px;
}
section[data-module=summary] menu > li[aria-current]{
    color:#4158FC;
    border-color:#4058FC;
}
section[data-module=summary] section{
    display: flex;
    align-items: center;
    font-size:18px;
    line-height:36px;
    position: absolute;
    opacity: 0;
    z-index:-1;
}
section[data-module=summary] section[aria-current]{
    position: relative;
    opacity: 1;
    z-index:1;
}
section[data-module=summary] section p{
    width: 500px;
    margin-right:40px;
}
section[data-module=summary] section ul > li::before{
    display: inline-block;
    background:#4158FC;
    content:"";
    width: 6px;
    height: 6px;
    border-radius:10px;
    margin-right:10px;
    transform:translateY(-4px);
}
section[data-module=summary] section img{
    margin-left:30px;
}

/* module about styles */
section[data-module=about] > figure{
    background: linear-gradient( 270deg, #F3F7FB, #E3EBF6);
    display: flex;
    width: 1060px;
    padding:40px 80px;
    box-shadow: 0 3px 5px rgba(0,0,0,0.2);
    border-radius: 40px;
    margin-bottom:50px;
}
section[data-module=about] > figure p{
    width: 510px;
    font-size:18px;
    line-height:36px;
}
section[data-module=about] > figure b{
    background:url(../images/about-icon-1.png) no-repeat center/210px 50px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 210px;
    height: 50px;
    font-size:22px;
    color:#FFFFFF;
    margin:20px 10px 0 10px;
}
section[data-module=about] > figure b:nth-of-type(2){
    background-image:url(../images/about-icon-2.png);
}
section[data-module=about] > figure b:nth-of-type(3){
    background-image:url(../images/about-icon-3.png);
}
section[data-module=about] > figure b:nth-of-type(4){
    background-image:url(../images/about-icon-4.png);
}

/* module reason styles */
section[data-module=reason]{
    background:#F6F8F9;
}
section[data-module=reason] > ul{
    display:flex;
    flex-wrap:wrap;
    justify-content: space-between;
    width: 1170px;
}
section[data-module=reason] > ul > li{
    background: #FFFFFF;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap:wrap;
    width: 570px;
    padding:20px;
    margin-bottom:30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border-radius: 20px;
}
section[data-module=reason] h4{
    background:url(../images/reason-icon-1.png) no-repeat center/120px 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 120px;
    height: 120px;
    margin-right:20px;
    font-size:20px;
    line-height: 30px;
    color:#FFFFFF;
    text-align: center;
}
section[data-module=reason] li:nth-of-type(2) > h4{
    background-image:url(../images/reason-icon-2.png);
}
section[data-module=reason] li:nth-of-type(3) > h4{
    background-image:url(../images/reason-icon-3.png);
}
section[data-module=reason] li:nth-of-type(4) > h4{
    background-image:url(../images/reason-icon-4.png);
}
section[data-module=reason] li:nth-of-type(5) > h4{
    background-image:url(../images/reason-icon-5.png);
    font-size:18px;
}
section[data-module=reason] li:nth-of-type(6) > h4{
    background-image:url(../images/reason-icon-6.png);
}
section[data-module=reason] li > p{
    width:390px;
    font-size:16px;
    line-height: 34px;
}
section[data-module=reason] li:nth-of-type(5) > p{
    transform:translateY(-30px);
}
section[data-module=reason] blockquote{
    background:#F8F8F8;
    position: absolute;
    bottom:20px;
    right:20px;
    width:390px;
    font-size:14px;
    line-height:24px;
    padding:8px 18px;
    border-radius:10px;
}

/* module advantage styles */
section[data-module=advantage] > ul{
    background:url(../images/advantage-center.png) no-repeat center left 364px/132px 132px,
    url(../images/advantage-left.png) no-repeat left center/480px 629px,
    url(../images/advantage-right.png) no-repeat right center/710px 629px;
    display:flex;
    width:1086px;
    height: 630px;
}
section[data-module=advantage] > ul > li{
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width:482px;
    padding:55px 126px 0 64px;
}
section[data-module=advantage] > ul > li:nth-child(2){
    flex:1;
    padding:55px 68px 68px;
}
section[data-module=advantage] > ul h3{
    background: #F8F8F8;
    width: 260px;
    height: 60px;
    margin-bottom:90px;
    font-size:25px;
    color:#0032C7;
    text-align: center;
    line-height: 60px;
    box-shadow: 0 2px 6px  rgba(0,0,0,0.1);
    border-radius: 30px;
}
section[data-module=advantage] > ul p{
    background: linear-gradient( 270deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,.6) 50%, rgba(255,255,255,0.15) 100%);
    width: 100%;
    height: 60px;
    margin-bottom:40px;
    text-align:center;
    line-height: 60px;
}
section[data-module=advantage] > ul > li:last-child h3{
    margin-bottom:20px;
}
section[data-module=advantage] > ul > li:last-child p{
    height: 50px;
    line-height: 50px;
    margin-bottom:14px;
    color:#FFFFFF;
}

/* module feature styles */
section[data-module=feature]{
    background:url(../images/feature-bg.png) no-repeat center;
}
section[data-module=feature] > h2{
    color:#FFFFFF;
}
section[data-module=feature] > article{
    display: flex;
    justify-content: space-between;
    width: 1160px;
}
section[data-module=feature]  dl{
    background: #FFFFFF;
    position: relative;
    width: 430px;
    padding:30px;
    border-radius: 30px;
    border: 1px solid #94BDFF;
}
section[data-module=feature] dl:first-of-type{
    width: 240px;
}
section[data-module=feature]  dl:nth-of-type(n + 2){
    display: grid;
    grid-template-columns: repeat(2,180px);
    grid-gap:15px 10px;
    padding-top:55px;
}
section[data-module=feature]  dl > dt{
    background: #009CF1;
    position: absolute;
    top:-23px;
    left:50%;
    transform:translateX(-50%);
    width: 140px;
    height: 50px;
    text-align: center;
    font-size:22px;
    color:#FFFFFF;
    line-height: 50px;
    border-radius: 30px;
    border: 1px solid #FFFFFF;
}
section[data-module=feature]  dl:nth-of-type(2) > dt{
    background:#3354FF;
}
section[data-module=feature]  dl:nth-of-type(3) > dt{
    background:#633DFF;
}
section[data-module=feature]  dl > dd{
    background: #EAF6FF;
    height: 45px;
    line-height: 45px;
    text-align: center;
    border-radius: 8px;
    font-size:20px;
}
section[data-module=feature] dl:first-of-type > dd:first-of-type{
    margin:60px 0 40px 0;
}
section[data-module=feature] dl:nth-of-type(2) > dd:nth-of-type(1),
section[data-module=feature] dl:nth-of-type(2) > dd:nth-of-type(2){
    transform:translateY(40px);
}

/* module exam styles */
section[data-module=exam] > h4{
    font-size:24px;
    margin-bottom:30px;
}
section[data-module=exam] > ul{
    display: flex;
    flex-wrap:wrap;
    justify-content: space-between;
    width: 1160px;
}
section[data-module=exam] > ul > li::before{
    background:url(../images/exam-icon.png) no-repeat center/380px 128px;
    content:attr(title);
    position: absolute;
    top:0;
    left:0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size:24px;
    color:#FFFFFF;
    width: 380px;
    height: 128px;
}
section[data-module=exam] > ul > li{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 380px;
    height: 128px;
    font-size:15px;
    padding:0 20px;
    color:#000;
    text-align: center;
    line-height: 30px;
    margin-bottom:30px;
    border-radius: 30px;
    cursor: pointer;
}
section[data-module=exam] > ul > li:hover::before{
    opacity: 0;
}
section[data-module=exam] > ul > li:hover{
    background:#EAF6FF;
    border:1px solid #AFB9FF;
}
section[data-module=exam] > figure{
    text-align: center;
    font-size:24px;
    font-weight:bold;
}
section[data-module=exam] > figure > img{
    display: block;
    margin:40px auto;
}

/* module crowd styles */
section[data-module=crowd]{
    background:url(../images/crowd-bg.png) no-repeat center/cover;
}
section[data-module=crowd] > ul{
    background:url(../images/crowd-icon.png) no-repeat center/350px 350px;
    display: flex;
    flex-wrap:wrap;
    justify-content: space-between;
    align-content: space-between;
    width: 1050px;
    height: 350px;
}
section[data-module=crowd] > ul > li{
    background:url(../images/crowd-left.png) no-repeat center/332px 70px;
    width: 332px;
    height: 70px;
    font-size:20px;
    line-height: 70px;
    text-align: center;
}
section[data-module=crowd] > ul > li:nth-of-type(even){
    background-image:url(../images/crowd-right.png);
    margin-left:200px;
}
section[data-module=crowd] > ul > li:nth-of-type(1),
section[data-module=crowd] > ul > li:nth-of-type(7){
    transform:translateX(60px);
}
section[data-module=crowd] > ul > li:nth-of-type(2),
section[data-module=crowd] > ul > li:nth-of-type(8){
    transform:translateX(-60px);
}

/* module course styles */
section[data-module=course] > h3{
    background: linear-gradient( 270deg, #4355FC 0%, #01A4FF 100%);
    align-self: flex-start;
    width: fit-content;
    height: 60px;
    font-size:21px;
    color:#FFFFFF;
    line-height: 60px;
    padding:0 30px;
    margin-left:40px;
    border-radius: 0 40px 0 0;
}
section[data-module=course] > dl{
    display: flex;
    flex-wrap:wrap;
    width: 1120px;
    font-size:18px;
    line-height: 70px;
    margin-bottom:60px;
}
section[data-module=course] > dl > dt{
    width: 520px;
    height: 70px;
    text-indent:40px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
section[data-module=course] > dl > dd{
    background: #F6F9FE;
    width: 300px;
    height: 70px;
    text-align: center;
    box-shadow: 0 1px 2px 1px rgba(0,0,0,0.1);
}
section[data-module=course] > dl > dd[data-span]{
    width: 600px;
}
section[data-module=course] > article{
    background: #FFFFFF;
    display: flex;
    width: 1120px;
    height: 660px;
    padding:20px 40px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border: 1px solid #F4F4F4;
}
section[data-module=course] menu{
    min-width: 230px;
}
section[data-module=course] menu > li{
    background: #F6FAFD;
    width: 230px;
    height: 60px;
    margin-bottom:10px;
    text-align: center;
    line-height: 60px;
    font-size:20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-radius: 10px;
    cursor:pointer;
}
section[data-module=course] menu > li[aria-current]{
    background: #4355FC;
    color:#FFFFFF;
    box-shadow: 0 3px 10px rgba(10,65,255,0.5);
}
section[data-module=course] section{
    position: absolute;
    padding:50px 90px;
    opacity: 0;
    z-index:-1;
    overflow-y:auto;
}
section[data-module=course] section[aria-current]{
    flex:1;
    position: relative;
    opacity: 1;
    z-index:1;

}
section[data-module=course] section h4{
    font-size:26px;
    color:#4355FC;
}
section[data-module=course] section p{
    padding:20px 0;
    font-size:18px;
    line-height: 40px;
}