.log_main{
    background: url("../img/log_top.png") center bottom no-repeat;
    background-size: cover;
    height: 318px;
    width: 100%;
}
.main_box{
    position: relative;
    width: 400px;
    padding: 40px 50px;
    background: #fff;
    margin: -130px auto 100px auto;
    border-radius: 10px;
    z-index: 1;
}
.log_top{
    text-align: center;
    color: #fff;
}
.log_top h1{
    font-size: 36px;
    font-weight: normal;
    padding: 40px 0;
}
.log_top p{
    font-size: 18px;
}
.main_box_tab a{
    letter-spacing: 2px;
    position: relative;
    float: left;
    display: inline-block;
    width: 50%;
    color: #999;
    font-size: 18px;
    text-align: center;
    line-height: 24px;
    font-weight: 500;
}
.main_box_tab a:hover{color: #7a7ff7}
.main_box_tab a.active{
    font-size: 24px;
    color: #7a7ff7;
}
.main_box_tab a.active:after{
    content: '';
    display: block;
    position: absolute;
    height: 4px;
    width: 24px;
    border-radius: 2px;
    background: #7a7ff7;
    top: 40px;
    left: 86px;
}
.main_box_tab{display:block;text-align:center;margin-bottom: 70px}
.form_list li{
    position: relative;
    height: 56px;
    line-height: 56px;
    margin-bottom: 30px;
    border-radius: 28px;
    background: #f4f4f4;
}
.form_list li i{
    float: left;
    display: block;
    width: 56px;
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    color: #7a7ff7;
    margin-left: 10px;
}
.form_list li input{
    font-family:Source Han Sans CN,-apple-system,BlinkMacSystemFont,PingFang SC,Segoe UI,Microsoft YaHei,wenquanyi micro hei,Hiragino Sans GB,Hiragino Sans GB W3,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,Helvetica,Arial,sans-serif;letter-spacing:1.2px;
    height: 100%;
    border: none;
    background: none;
    width: calc(100% - 76px);
    color: #1d1d28;
}
.form_list li.error span{
    position: absolute;
    right: 20px;
    top: 42px;
    font-size: 14px;
    color: #fe6e84;
}
.form_btn{
    display: block;
    width: 100%;
    font-size: 18px;
    height: 56px;
    line-height: 56px;
    text-align: center;
    color: #fff;
    background: #7a7ff7;
    border-radius: 28px;
    box-shadow: 0 4px 10px rgba(87,89,195,.35);
    cursor: pointer;
    margin-top: 40px;
}
.main_box_bottom{
    font-size: 14px;
    margin: 60px 0 30px 0;
    text-align: center;
    color: #999;
}
.main_box_bottom a{
    color: #999;
}
.main_box_bottom a:hover{color: #7a7ff7}
.main_box_bottom .line{
    display: inline-block;
    width: 1px;
    height: 14px;
    margin: 0 20px;
    background: #ddd;
}
.phone_pass{
    position: absolute;
    right: 20px;
    font-size: 14px;
    color: #7a7ff7;
}
.back_title{
    position: relative;
    font-size: 24px;
    width: 100%;
    color: #7a7ff7!important;
    font-weight: 500;
}
.back_title:after{
    content: '';
    display: block;
    position: absolute;
    height: 4px;
    width: 24px;
    border-radius: 2px;
    background: #7a7ff7;
    top: 40px;
    left: 186px;
}
@media (max-width: 800px) {
    .log_main{height: 180px;padding-top: 80px}
    .main_box{
        position: relative;
        width: calc(94% - 40px);
        padding: 40px 20px;
        background: #fff;
        margin: -100px auto 40px auto;
        border-radius: 10px;
        z-index: 1;
        clear: both;
    }
    .main_box_tab a.active:after{
        left: 66px;
    }
    .log_top{display: none}
    .back_title:after{left: 146px}
    .mob_logo{
        background: url("../img/logo3.png") no-repeat;
        height: 50px;
        width: 46px;
        padding-top: 100px;
        margin: 0 auto;
    }
}