.clear::after{
    content: '';
    display: block;
    height: 0;
    clear: both;
}

.common_title{
    font-size: 32px;
    color: #000000;
    text-align: center;
}

.common_subtitle{
    font-size: 16px;
    color: #666666;
    line-height: 26px;
    text-align: center;
    margin-top: 20px;
}

.banner_box{
    background: url(../images/banner_bg.png) no-repeat center/cover;
	height: 521px;
    overflow: hidden;
}

.banner_box .content{
    margin-top: 170px;
    color: #fff;
}

.banner_box .content .line1{
    font-size: 34px;
    font-weight: bold;
}

.banner_box .content .line2{
    font-size: 20px;
    line-height: 70px;
}

.banner_box .content .tag{
    float: left;
    width: 110px;
    height: 38px;
    line-height: 38px;
    background: #4160e3;
    border-radius: 6px;
    font-size: 16px;
    text-align: center;
    margin-right: 15px;
}

.banner_box .content .tag::before{
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    background: url(../images/banner_icon.png) no-repeat center;
    margin-right: 10px;
    vertical-align: middle;
}

.banner_box .content .btn_box{
    margin-top: 40px;
}

.banner_box .content .btn_box .btn{
    display: inline-block;
    width: 140px;
    height: 44px;
    background: #fff;
    text-align: center;
    line-height: 44px;
    color: #3152e1;
    font-size: 18px;
    font-weight: bold;
    border-radius: 4px;
    vertical-align: middle;
}

.banner_box .content .btn_box .btn::after{
    content: '';
    display: inline-block;
    width: 10px;
    height: 15px;
    background: url(../images/banner_icon_02.png) no-repeat center;
    margin-left: 15px;
    vertical-align: middle;
}

.banner_box .content .btn_box .wecode{
    display: inline-block;
    width: 110px;
    margin-left: 20px;
    vertical-align: middle;
}

.sec1_box{
    background: #fff;
    padding: 80px 0 110px;
}

.sec1_box .content{
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    justify-content: space-between;
    margin-top: 95px;
}

.sec1_box .content .item .img_box{
    text-align: center;
}

.sec1_box .content .item .title{
    font-size: 20px;
    color: #333;
    margin: 20px 0 10px;
    text-align: center;
}

.sec1_box .content .item .descr{
    font-size: 14px;
    color: #666;
    line-height: 24px;
}

.sec2_box{
    background: #fafafa;
    padding: 80px 0 100px;
}

.sec2_box .content{
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
}

.sec2_box .content .item{
    height: 380px;
    background: #fff;
    border-radius: 8px;
    padding: 0 20px;
}

.sec2_box .content .item .img_box{
    text-align: center;
    margin-top: 50px;
}

.sec2_box .content .item .title{
    font-size: 18px;
    color: #333;
    margin: 30px 0 15px;
    text-align: center;
}

.sec2_box .content .item .descr{
    font-size: 14px;
    color: #666;
    line-height: 24px;
}

.sec3_box{
    background: url(../images/sec3_bg.png) no-repeat center/cover;
    padding: 75px 0;
}

.sec3_box .common_title{
    color: #fff;
}

.sec3_box .content{
    margin-top: 60px;
    text-align: center;
}

.sec4_box{
    background: #fafafa;
    padding: 80px 0 100px;
}

.sec5_box{
    background: #fff;
}

.sec4_box .content{
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 90px;
}

.sec4_box .content .item_box .item{
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    align-items: top;
    margin-top: 80px;
}

.sec4_box .content .item_box .item:first-child{
    margin-top: 0;
}

.sec4_box .content .item_box .item .icon{
    display: inline-block;
    width: 60px;
    height: 60px;
    margin-right: 10px;
}

.sec4_box .content .item_box .item .txt_box .title{
    font-size: 16px;
    color: #333;
    font-weight: bold;
}

.sec4_box .content .item_box .item .txt_box .descr{
    font-size: 14px;
    color: #666;
    margin-top: 10px;
    line-height: 24px;
}

.sec4_box .content .item_box .item .txt_box .descr p{
    margin-top: 20px;
}

.sec6_box{
    background: #fafafa;
    padding-top: 80px;
}

.sec6_box .content{
    margin-top: 40px;
}

.sec6_box .content .item:nth-child(2n+1){
    background: #fafafa;
}

.sec6_box .content .item:nth-child(2n){
    background: #fff;
}

.sec6_box .content .item .w_1200{
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    justify-content: space-between;
    padding: 60px 50px;
}

.sec6_box .content .item .w_1200 .text_box{
    margin-top: 20px;
}

.sec6_box .content .item .w_1200 .text_box .title{
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.sec6_box .content .item .w_1200 .text_box .descr{
    font-size: 16px;
    color: #666;
    margin-top: 15px;
    line-height: 24px;
}

.sec6_box .content .item .w_1200 .text_box .btn{
    display: inline-block;
    width: 100px;
    height: 34px;
    line-height: 34px;
    background: none;
    border: solid 1px #2f56ff;
    border-radius: 4px;
    font-size: 16px;
    color: #2f56ff;
    margin-top: 35px;
    text-align:center;
}