.ms-top {
    width: 100%;
    height: 88px;
    background: #fff;
    box-sizing: border-box;
    padding-top: 20px;
}

.ms-top .center {
    width: 850px;
    margin: 0 auto;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.top ul {
    position: relative;
    top: 10px;
}

.top ul li {
    display: inline-block;
    margin-right: 5px;
    margin-left: 5px;
    text-align: center;
}

.top .line {
    width: 2px;
    height: 12px;
    display: inline-block;
    background: #E8E8E8;
    position: relative;
    top: 2px;
}

.top ul .uc-li {
    width: 130px;
    height: 42px;
    background: #FFBB49;
    color: #fff;
    line-height: 42px;
    border-radius: 2px;
    display: inline-block;
}

.top ul li a {
    font-size: 14px;
    color: #121212;
}




.btn {
    height: 50px;
    cursor: pointer;
    background: #426FB0;
    border-radius: 4px;
    border: none;
    line-height: 50px;
    text-align: center;
    color: #fff;
    font-size: 14px;
    display: block;
}


.window-masking {
    width: 100%;
    height: 100%;
    position: fixed;
    background: #000;
    opacity: .6;
    filter: alpha(opacity=60);
    top: 0;
    left: 0;
    z-index: 100;
    display: none;
}

.window-masking.active {
    display: block !important;
}

.hk-window {
    width: 350px;
    height: 230px;
    background: #fff;
    z-index: 10001;
    position: fixed;
    left: 50%;
    top: 40%;
    box-sizing: border-box;
    border-radius: 10px;
    display: none;
    transform: translateX(-175px);
}

.tips {
    width: 400px;
    height: 80px;
    background-color: rgba(0, 0, 0, .8);
    z-index: 10001;
    position: fixed;
    left: 50%;
    top: 40%;
    transform: translateX(-200px);
    box-sizing: border-box;
    border-radius: 10px;
    display: none;
    font-size: 16px;
    line-height: 80px;
    text-align: center;
    color: #fff;
}

.w {
    width: 1200px;
    margin: 0 auto
}

.aboutUs .step_1 {
    width: 100%;
    height: 600px;
    background: url("/images/about/s1.png") no-repeat center;
    background-size: cover;
    padding-top: 180px;
    box-sizing: border-box;
    text-align: center;
    color: #fff;
    margin-top: 64px;
}

.aboutUs .step_1 .w {
    width: 1150px;
}

.aboutUs .step_1 p:nth-child(1) {
    font-size: 40px;
}

.aboutUs .step_1 p:nth-child(2) {
    font-size: 16px;
    line-height: 28px;
    margin-top: 10px;
}
.aboutUs .step_1 p:nth-child(3){
    font-size: 14px;
    line-height: 28px;
    margin-top: 20px;
}
.aboutUs .step_2 {
    width: 100%;
    height: 500px;
    background-color: #2A2A2A;
    box-sizing: border-box;
    padding-top: 95px;
    color: #fff;
}

.aboutUs .step_2 .w {
    width: 1360px;
}
.aboutUs .step_2 .left {
    float: left;
}
.aboutUs .step_2 .right {
    float: right;
}
.aboutUs .step_2 .item .title {
    font-size: 40px;
}

.aboutUs .step_2 .item .title img {
    width: 114px;
}

.aboutUs .step_2 .item .title span {
    position: relative;
    top: 40px;
    right: 36px;
}


.aboutUs .step_2 .item .text {
    width: 464px;
    font-size: 16px;
    line-height: 30px;
    margin-top: 6px;
    margin-left: 80px;
}

.aboutUs .step_2 .box {
    height: 30px;
    margin-top: 24px;
    margin-left: 80px;
}

.aboutUs .step_2 .box div {
    font-size: 14px;
    border-radius: 4px 4px 4px 4px;
    border: 1px solid #FFFFFF;
    padding: 5px 21px;
    margin-right: 14px;
    float: left;
}
.aboutUs .step_3{
    background-color: #fff;
    padding-top: 125px;
    padding-bottom: 133px;
    text-align: center;
}
.aboutUs .step_3 img{
    width: 100%;
}
.aboutUs .step_3 .box{
    width: 100%;
    margin-top: 53px;
    display: flex;
    justify-content: space-around;
}
.aboutUs .step_3 .box .item{
    text-align: center;
}
.aboutUs .step_3 .box .item p:nth-child(1){
    color: #EEB556;
    font-size: 36px;
}
.aboutUs .step_3 .box .item p:nth-child(2){
    color: #222;
    font-size: 14px;
    margin-top: 4px;
}
 .aboutUs .step_4{
    background-color: #222;
    padding-top: 90px;
    padding-bottom: 110px;
    text-align: center;
}
.aboutUs .step_4 .title{
    font-size: 40px;
    color: #fff;
}
.aboutUs .step_4 .box{
    width: 100%;
    margin-top: 60px;
    display: flex;
    justify-content: space-between;
}
.aboutUs .step_4 .box .item{
    width: 185px;
    text-align: center;
    font-size: 16px;
    color: #fff;
    line-height: 24px;
}
.aboutUs .step_4 .box .item img{
    width: 100px;
    margin-bottom: 20px;
}
.aboutUs .step_5{
    background-color: #fff;
    height: 1070px;
    box-sizing: border-box;
    padding-top: 40px;
}
.aboutUs .step_5 .item {
    width: 100%;
    height: 500px;
}
.aboutUs .step_5 .item p:nth-child(1){
    color: #222;
    font-size: 40px;
    margin-bottom: 15px;
}
.aboutUs .step_5 .item p:nth-child(2),.aboutUs .step_5 .item p:nth-child(3){
    color: #9C9C9C;
    font-size: 18px;
    line-height: 30px;
}
.aboutUs .step_5 .item .left{
    float: left;
}
.aboutUs .step_5 .item .right{
    float: right;
}
.aboutUs .step_5 .item img{
    width: 500px;
}