.header{
    width: 100%;
    height: 80px;
}
.header .top-bar{
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
}
.about-us-banner{
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
.about-us-banner>img{
    width: 100%;
    text-align: center;
}
.about-us-container{
    width: 1132px;
    margin: 0 auto;
}
.about-us-main-menu{
    margin-top: 490px;
    text-align: center;
    border-bottom:1px solid #F0F0F0;
}
.about-us-main-menu span{
    display: inline-block;
    width: 200px;
    height: 60px;
    line-height: 66px;
    font-family: PingFangSC-Regular;
    font-size: 18px;
    color: #999999;
    letter-spacing: 0;
    text-align: center;
    cursor: pointer;
}
.about-us-main-menu .active{
    color: #FA5C5C;
}
.enterprise-section{
    border-bottom: 1px solid #F0F0F0;
    padding:60px 50px;
    box-sizing: border-box;
}
.enterprise-section>p{
    font-family: PingFangSC-Regular;
    font-size: 18px;
    color: #666666;
    letter-spacing: 0;
    text-align: justify;
    line-height: 27px;
    margin-bottom: 20px;
}
.enterprise-section:nth-child(1) p:nth-child(1){
    text-indent: 40px;
}
.enterprise-section .en_son-title{
    font-family: ArialMT;
    font-size: 14px;
    color: #999999;
    letter-spacing: 0;
    text-align: center;
}
.enterprise-section .son-title{
    font-family: PingFangSC-Medium;
    font-size: 24px;
    color: #333333;
    letter-spacing: 0;
    text-align: center;
    text-indent: 98px;
}
.enterprise-section .son-title .red-line{
    display: inline-block;
    width: 40px;
    height: 2px;
    background: #FA5C5C;
}
.section-son-item-wrapper{
    display: flex;
}
.section-son-item-wrapper .section-son-item{
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 150px;
}
.daily-print-volume{
    background: url("../assets/images/Our ability 1.png") no-repeat 50% 42%;
    background-size: 65px;
}
.national-network{
    background: url("../assets/images/Our ability 2.png") no-repeat 50% 42%;
    background-size: 65px;
}
.cooperate-partner{
    background: url("../assets/images/Our ability 3.png") no-repeat 50% 42%;
    background-size: 65px;
}
.covering-cities{
    background: url("../assets/images/Our future 3.png") no-repeat 50% 42%;
    background-size: 50px;
}
.section-son-item-wrapper .section-son-item .short-line{
    width: 27px;
    height: 3px;
    background: #FE305C;
    border-radius: 1.5px;
}
.section-son-item-wrapper .section-son-item:nth-child(2) .short-line{
    background: #E469FE;
}
.section-son-item-wrapper .section-son-item:nth-child(3) .short-line{
    background: #5CEFA1;
}
.section-son-item-wrapper .section-son-item .digital-display{
    font-family: PingFangSC-Semibold;
    font-size: 45px;
    color: #333333;
    letter-spacing: 2px;
    text-align: center;
    margin: 25px 0;
}
.section-son-item-wrapper .section-son-item .digital-title{
    font-family: PingFangSC-Regular;
    font-size: 16px;
    color: #666666;
    letter-spacing: 0;
    text-align: center;
}
.development-history-container{
    padding: 60px 50px;
    box-sizing: border-box;
}
.development-history-illustration{
    display: flex;
}
.development-history-illustration>div{
    flex: 1;
}
.development-history-illustration-left{
    padding: 50px;
    box-sizing: border-box;
    min-width: 467px;
}
.development-history-illustration-left .en-illustration-title{
    font-family: ArialMT;
    font-size: 14px;
    color: #999999;
    letter-spacing: 0;
    margin-top: 5px;
}
.development-history-illustration-left .illustration-title span:nth-child(1){
    font-family: PingFangSC-Medium;
    font-size: 24px;
    color: #333333;
    letter-spacing: 0;
}
.development-history-illustration-left .illustration-title span:nth-child(2){
    display: inline-block;
    width: 40px;
    height: 2px;
    background: #FA5C5C;
    margin-left: 10px;
}
.development-process-wrapper{
    width: 100%;
    height: 1335px;
    position: relative;
}
.development-process-wrapper .extension-line{
    width: 649px;
    height: 994px;
    background: url("../assets/images/background2.png")no-repeat center;
    position: absolute;
    top: 64px;
    left: 64px;
}
.development-process-item-cont{
    width: 777px;
    height: 350px;
    position: relative;
}
.development-process-item-cont .years-icon{
    width: 128px;
    height: 128px;
}
.development-process-item-cont .years-icon:nth-child(2){
    position: absolute;
    bottom: 0;
    right: 0;
}
.development-process-item-introduce{
    margin-top: 30px;
}
.development-process-item-introduce:nth-child(4){
    position: absolute;
    bottom: -202px;
    right: -370px;
}
.development-process-item-introduce .development-process-item-title{
    font-family: PingFangSC-Medium;
    font-size: 26px;
    color: #333333;
    letter-spacing: 0;
}
.development-process-item-introduce .development-process-item-describe{
    font-family: PingFangSC-Regular;
    font-size: 20px;
    color: #666666;
    letter-spacing: 0;
    line-height: 30px;
    margin-top: 15px;
}
.company-predecessor,.monthly-event-item-describe{
    max-width:464px ;
}
.development-process-item-describe .monthly-event-item{
    display: flex;
}
.development-process-item-describe .monthly-event-item-describe{
    margin-left: 30px;
}
.development-process-item-describe .monthly-event-item .month-wrap span{
    font-family: PingFangSC-Regular;
    font-size: 16px;
    color: #999999;
    letter-spacing: 0;
}
.development-process-item-describe .monthly-event-item .month-wrap span:nth-child(1){
    font-family: PingFangSC-Medium;
    font-size: 30px;
    color: #FA5C5C;
    letter-spacing: 0;
}
.development-process-item-describe .monthly-event-item .monthly-event-item-describe{
    font-family: PingFangSC-Regular;
    font-size: 20px;
    color: #666666;
    letter-spacing: 0;
    line-height: 30px;
}
.development-process-item-describe .monthly-event-item{
    margin-top: 5px;
}
.development-process-item-cont:nth-child(3){
    margin-top: 152px;
}
.development-process-item-cont:nth-child(3) .development-process-item-introduce:nth-child(4){
    position: absolute;
    bottom: -275px;
    right: -380px;
}
.development-process-item-cont:nth-child(4){
    margin-top: 145px;
}
.contact-us-container{
    margin-top: 100px;
    width: 100%;
    display: flex;
}
.contact-us-left{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.contact-title{
    font-family: PingFangSC-Medium;
    font-size: 30px;
    color: #333333;
    margin: 10px 0;
}
.contact-detail{
    font-family: PingFangSC-Regular;
    font-size: 18px;
    color: #666666;
    letter-spacing: 0;
    text-align: center;
    line-height: 30px;
}
.contact-us-container .contact-us-left .contact-way-cont,.contact-us-container .contact-us-left .contact-address-cont{
    width: 300px;
    height: 282px;
    background: #FFFFFF;
    box-shadow: 0 10px 40px 0 rgba(205,205,205,0.30);
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}
.contact-us-container .contact-us-left .contact-address-cont{
    margin-top: 30px;
}
.send-email-container{
    width: 760px;
    height: 735px;
    background: #FFFFFF;
    box-shadow: 0 10px 40px 0 rgba(205,205,205,0.30);
    border-radius: 5px;
    padding: 40px 60px;
    box-sizing: border-box;
    margin-left: 50px;
}
.send-email-container .suggest{
    font-family: PingFangSC-Regular;
    font-size: 24px;
    color: #333333;
    letter-spacing: 0;
}
.send-email-container .input-row{
    margin: 30px 0;
    box-sizing: border-box;
}
.send-email-container .input-row input{
    border: 1px solid #333;
    border-radius: 5px;
    height: 60px;
    font-size: 18px;
    padding-left: 15px;
    width: 100%;
    box-sizing: border-box;
}
.send-email-container .input-row:nth-child(2) input{
    width: 49%;
}
.send-email-container .input-row:nth-child(2){
    display: flex;
    justify-content: space-between;
}
#remark{
    border: 1px solid #333;
    border-radius: 5px;
    font-size: 18px;
    padding: 15px;
    width: 100%;
    box-sizing: border-box;
}
.send-email-container .send-btn{
    width: 640px;
    height: 60px;
    line-height: 60px;
    background: #FA5C5C;
    box-shadow: 0 20px 40px 0 rgba(0,0,0,0.10);
    border-radius: 5px;
    color: #ffffff;
    text-align: center;
    margin-top: 45px;
    cursor: pointer;
}
.map-container{
    width: 100%;
    height: 500px;
    margin: 100px auto;
}
.send-success-dialog-mask{
    width: 100%;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: rgba(0,0,0,0.2);
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
}
.send-success-dialog{
    width: 460px;
    height: 400px;
    background: #ffffff;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.success-icon{
    width: 60px;
    height: 60px;
}
.success-icon>img{
    width: 100%;
}
.send-success-title{
    font-size: 30px;
    color: #333333;
    margin-top: 30px;
}
.send-success-tips{
    font-size: 20px;
    color: #666;
    margin-top: 15px;
}
.send-success-confirm-btn{
    width: 75%;
    height: 45px;
    line-height: 45px;
    text-align: center;
    background: #FA5C5C;
    font-size: 16px;
    color: #ffffff;
    margin-top: 60px;
    border-radius: 5px;
    cursor: pointer;
}