* {
    padding: 0;
    margin: 0;
}

body {
    width: 100%;
    font-family: PingFangSC, PingFangSC-Semibold;
}

.center {
    width: 1280px;
    margin: 0 auto;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

div {
    box-sizing: border-box;
}


/* 头部 */

header {
    position: fixed;
    top: 0px;
    width: 100%;
    height: 72px;
    z-index: 2;
    background: #ECF1FD;
    box-shadow: 0px 5px 16px 0px rgba(6, 38, 109, 0.14);
}

.nav-home {
    height: 72px;
}

.logo {
    float: left;
    width: 172px;
    height: 40px;
    margin-top: 15px;
    margin-right: 70px;
}

.logo img {
    width: 172px;
    height: 40px;
}

.nav-top {
    float: left;
    display: flex;
    height: 72px;
}

.nav-top ul {
    display: flex;
    align-items: center;
    height: 72px;
}

.nav-top ul li {
    float: left;
    font-size: 16px;
    margin-right: 40px;
    color: #020814;
}

.nav-top ul li a {
    color: #020814;
}

.trial {
    float: right;
    width: 152px;
    height: 72px;
    background: linear-gradient(115deg, #73aaff 0%, #0053ff 100%);
    font-size: 16px;
    color: #FFFFFF;
    line-height: 72px;
    text-align: center;
    cursor: pointer;
}
/*头部banner图*/
.chanpin_banner{
    width: 100%;
    height: 360px;
    margin-top: 72px;
    position: relative;
    background: url('../imgs/Product/chanpin.png') no-repeat;
}

.chanpin_title{
    position: absolute;
    top: 25%;
    left: 28%;
}
.chanpin_bgtle{
    font-size: 36px;
    font-weight: bold;
    color: #020814;
}
.chanpin_smtle{
    font-size: 16px;
    margin-top: 25px;
}
.try_use{
    width: 200px;
    height: 58px;
    background-color: #0053FF;
    border-radius: 4px;
    color: #fff;
    text-align: center;
    line-height:58px;
    font-size: 20px;
    margin-top: 50px;
    cursor: pointer;
}
/*公开课流程*/
.public_class{
    margin-top: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.pb_tle{
    font-size: 40px;
    font-family: PingFang SC, PingFang SC-Bold;
    color: #020814;
    font-weight: 600;
    text-align: center;
}
.pb_img{
    width: 740px;
    height: 740px;
    background-image: url(../imgs/Product/public_class.png);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
    position: relative;
}
.pb_bg_txt{
    transform: translateY(-15px);
    font-size: 36px;
    font-weight: 400px;
    color:#fff;
}
.pb_sm_txt{
   font-size: 20px;
   color: #fff;
}
.pb_cont{
    position: absolute;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.block1{
    width:12px;
    height: 12px;
    background: linear-gradient(335deg, #ffb400 25%, #ffcd03 96%);
    border-radius: 50%;
    margin-top:10px;
}
.left_first{
    display: flex;
    justify-content: flex-end;
    width: 250px;
    height: 100px;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0px 8px 24px 0px rgba(0, 14, 71, 0.08);
    padding: 20px 30px 20px 40px;
    position: relative;
}
.l_first{
    transform: translate(-130px,-50px);
}
.l_second {
    transform: translate(-350px, 0px);
}
.l_third {
    transform: translate(-170px, 80px);
}
.r_first {
    transform: translate(130px, -50px);
}

.r_second {
    transform: translate(350px, 0px);
}

.r_third {
    transform: translate(170px, 80px);
}

.leftBlock{
    position: absolute;
    right: 8%;
    top:29%;
    width: 12px;
    height: 12px;
    background: linear-gradient(335deg, #ffb400 25%, #ffcd03 96%);
    border-radius: 50%;
}
.left p{
    text-align: right;
    margin-right: 10px;
    line-height: 2;
    font-size: 16px;
    color: #020814;
}
.right_first{
    display: flex;
    justify-content: flex-start;
    width: 250px;
    height: 100px;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0px 8px 24px 0px rgba(0, 14, 71, 0.08);
    padding: 20px 30px 20px 30px;
    position: relative;
}

.rightBlock{
        position: absolute;
        left: 8%;
        top: 29%;
        width: 12px;
        height: 12px;
        background: linear-gradient(335deg, #ffb400 25%, #ffcd03 96%);
        border-radius: 50%;
}
.right p{
    text-align: left;
    margin-left: 10px;
    line-height: 2;
    font-size: 16px;
    color: #020814;
}
.Scan-b{
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}
/*精品课*/
.jingpin_class{
    width: 100%;
    height: 500px;
    background-color: #f1f5fb;
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    
}
.jp_content{
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 50px;
}
.jingpin_class p{
    font-size: 40px;
    font-weight: bold;
    margin-top: 90px;
}
.jp_spec{
    height: 200px;
    width: 380px;
    background-color: #fff;
    border-radius: 20px;
    box-shadow: 0px 8px 24px 0px rgba(0, 14, 71, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    margin-right: 30px;
    padding-right: 20px;
}
.jp_spec p{
    font-size: 20px;
    font-family: PingFang SC, PingFang SC-Regular;
    font-weight: normal;
    margin-top: 0px;
    color: #020814;
    line-height: 1.5;
}
/*产品介绍*/
.block{
    width: 70px;
    height: 12px;
    background: linear-gradient(315deg, #0079ff, #49a0ff 100%);
    border-radius: 6px;
}

/* banner */

.banner {
    height: 288px;
}

.banner-l {
    padding-left: 41px;
    padding-top: 57px;
}

.banner-l span {
    font-size: 36px;
    font-weight: 600;
    text-align: center;
    color: #ffffff;
    line-height: 58px;
}

.banner-l p {
    height: 28px;
    font-weight: 400;
    text-align: left;
    color: #ffffff;
    line-height: 28px;
}

.banner-l a {
    display: block;
    width: 120px;
    height: 36px;
    line-height: 36px;
    background: #fff;
    border-radius: 4px;
    text-align: center;
    margin-top: 10px;
    color: #1872ED;
}

.main div div {
    float: left;
    width: 50%;
}

.main1{
    height: 600px;
    position: relative;
}
.main2{
    height: 800px;
}
.main3 {
    height: 700px;
}
.main1-l span,
.main2 span,
.main3 span,
.main4 span {
    width: 458px;
    height: 40px;
    font-size: 28px;
    font-family: PingFangSC, PingFangSC-Semibold;
    font-weight: 600;
    text-align: left;
    color: #202020;
    line-height: 40px;
}

.main1 p,
.main2 p,
.main3 p,
.main4 p {
    margin-top: 20px;
    font-size: 16px;
}

.main1 p::before,
.main2 p::before,
.main3 p::before,
.main4 p::before {
    display: block;
    float: left;
    margin-right: 20px;
    content: "";
    width: 6px;
    height: 6px;
    background: #1872ED;
    border-radius: 50%;
    margin-top: 7px;
}

.main1-l,
.main3-l {
    padding-left: 20%;
    padding-top: 8%;
}
.main3-l span{
    display: inline-block;
    width: 370px;
}
.main2-r{
    padding-left: 120px;
    padding-top: 248px;
}
.main2-r span{
    display: inline-block;
    width: 370px;
}
.main4-r {
    padding-left: 91px;
    padding-top: 148px;
}

nav {
    width: 70px;
    height: 12px;
    background: linear-gradient(315deg, #0079ff, #49a0ff 100%);
    border-radius: 6px;
    margin-top: 20px;
    margin-bottom: 40px;
}
.main1-r{
    padding-top: 70px;
}
.shouji {
    position: absolute;
    top: 33%;
    left: 75%;
}
.little_img {
    display: flex;
    width: 341px;
    height: 115px;
    background: rgba(255, 255, 255, 0.90);
    border-radius: 16px;
    box-shadow: 0px 8px 24px 0px rgba(0, 14, 71, 0.08);
    justify-content: flex-start;
    position: absolute;
    top: 70%;
    left: -8%;
} 
.little_img>div{
    width: 110px;
    height: 110px;
    text-align: center;
    position: relative;
}
.little_img>div>img{
    display: block;
}
.little_img>div>span {
    font: 12px;
    color: #020814;
    display: block;
    position: absolute;
    bottom: 15%;
    left: 0;
    right: 0;
}
.main2-l{
    padding-top: 88px;
}
.main3-r,
.main4-l {
    padding-top: 108px;
}
/* .main4-l img {
    width: 660px;
    height: 360px;
} */
.main2-l,
.main4-l {
    padding-left: 130px;
}
.mian2-bg{
    background-image: url(../imgs/Product/phone1.png);
    height: 700px;
    width: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    margin-right: 100px;
    position: relative;
}
.main2-shouji{
    position: absolute;
    left: 10%;
}
.main2-shouji img{
   width: 393px;
   height: 536px;
}
.flower{
    position: absolute;
    left: 85%;
    bottom: 30%;
}
.chat{
    position: absolute;
    top: 21%;
    left: 53%;
}
.chat>div{
    position: relative;
}
.message{
    position: absolute;
    top: 60%;
    left: -4%;
}
.like{
    position: absolute;
    top: 40%;
    left: -15%;
}
.voice{
    position: absolute;
    top: 18%;
    left: -3%;
}
.main3-bg{
    background-image: url(../imgs/Product/computed1.png);
    height: 427px;
    width: 100%;
    background-repeat: no-repeat;
    margin-left: 80px;
    background-size: cover;
    position: relative;
}
.main1-bg {
    background-image: url(../imgs/Product/computed.png);
    height: 427px;
    width: 100%;
    background-repeat: no-repeat;
    margin-left: 80px;
    background-size: cover;
    position: relative;
}
.main3_img{
    width: 340px;
    height: 90px;
    background: rgba(255, 255, 255, 0.90);
    border-radius: 16px;
    box-shadow: 0px 8px 24px 0px rgba(0, 14, 71, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 58%;
    left: -4%;
}
.main3_img div{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #020814;
    white-space: nowrap;
    margin-top: 5px;
}
.shuju{
    position: absolute;
    left:90%;
}
.shuju div{
    position: absolute;
    color: #fff;
    font-size:12px;
    top: 60%;
    left: 8%;
}
/* 限时免费！立即制定专业级解决方案 */

.Formu {
    height: 240px;
    background: linear-gradient(137deg,#73aaff 5%, #0053FF 93%);
}
.dingzhi{
    width: 100%;
    height: 340px;
    background-image: url(../imgs/Product/free.png);
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.dingzhi_txt span {
    display: block;
    text-align: center;
    padding-top: 50px;
    height: 60px;
    font-size: 36px;
    font-weight: 600;
    color: #020814;
    line-height: 60px;
}

.dingzhi_txt a {
    display: block;
    margin: 0 auto;
    margin-top: 30px;
    text-align: center;
    width: 148px;
    height: 44px;
    line-height: 44px;
    background: #1872ED;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 400;
    color: #fff;
}
.center{
    width: 1280px;
    margin: 0 auto;
}
/*  */

.site-footer {
    height: 199px;
    background-color: #101010;
}

.site-footer .center div {
    padding-top: 40px;
    float: left;
}

.site-footer .logo-footer img {
    width: 132px;
    height: 43px;
}

.site-footer .center div span {
    color: #515151;
    font-size: 14px;
}

.site-footer .center div p {
    color: #818181;
    font-size: 14px;
    margin-top: 20px;
}

.site-footer .center .QR_code {
    float: right;
}

.QR_code img {
    height: 110px;
}

.site-footer .center .QR_code p {
    margin-top: 7px;
    text-align: center;
}

.profuct,
.serve,
.address {
    margin-left: 80px;
}

.site-info {
    height: 63px;
    line-height: 31px;
    background-color: #090909;
}

.site-info span {
    display: block;
    text-align: center;
    font-size: 14px;
    color: #6f6f6f;
}