img{
    width: 100%;
    height: auto;
}
.img-wrap{
    margin: 10px 15px 0 15px;
}
.margin-two-wrap{
    margin-top: 20px;
}
.item-wrap{
    box-shadow: 0px 1px 3px rgba(153,153,153,0.4);
}
.last-wrap{
    padding-bottom: 66px;
}
.flex-wrap{
    display: flex;
    align-items: center;
    justify-content: center;
}
.flex-item{
    flex: 1;
    text-align: center;
}
.icon-rule{
    display: block;
    width: 46px;
    height: 50px;
    background: url("../images/index/icon_rule.png") no-repeat;
    background-size: 100% 100%;
    margin: 15px auto 5px;
}
.icon-reward{
    display: block;
    width: 46px;
    height: 50px;
    background: url("../images/index/icon_reward.png") no-repeat;
    background-size: 100% 100%;
    margin: 15px auto 5px;
}
.icon-rank{
    display: block;
    width: 46px;
    height: 50px;
    background: url("../images/index/icon_rank.png") no-repeat;
    background-size: 100% 100%;
    margin: 15px auto 5px;
}
.item-wrap .desc{
    display: block;
    font-size: 14px;
    color: #181818;
    margin-bottom: 16px;
}
.btm-wrap{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 46px;
    z-index: 9999;
}
.content-btn{
    height: 46px;
    background: url("../images/index/btn_content.png") no-repeat;
    background-size: 100% 100%;
}
.submit-btn{
    height: 46px;
    background: url("../images/index/btn_submit.png") no-repeat;
    background-size: 100% 100%;
}
.three-title{
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 10px 10px 10px;
}
.three-title .line {
    display: inline-block;
    flex: 1;
    height: 1px;
    background: #D4D4D4 ;
}
.three-title .title-desc{
    font-size: 20px;
    font-weight: bolder;
    letter-spacing: 2.5px;
    margin: 0 15px;
}
.icon-tel{
    display: inline-block;
    width: 27px;
    height: 27px;
    background: url("../images/index/icon_tel.png") no-repeat;
    background-size: 100% 100%;
    margin-right: 3px;
}
.tel-desc{
    display: inline-block;
    width: 68px;
    font-size: 20px;
    height: 20px;
    line-height: 20px;
    color: #181818;
    letter-spacing: 2.5px;
}
.phone-desc{
    width: 175px;
    text-align: left;
    font-weight: 400;
    color: #181818;
    line-height: 22px;
    letter-spacing: 2px;
    font-size: 20px;
    height: 22px;
    white-space: nowrap;
}
.phone-desc > a{
    display: inline-block;
    width: 175px;
    white-space: nowrap;
}
.tel-wrap{
    margin-bottom: 20px;
}
.icon-close::before{
    color: #333;
    font-size: 18px;
}
.first-title-wrap{
    margin-top: 30px;
}
.top-wrap{
    position: sticky;
    top: 0px;
    z-index: 521;
}
.nav-header {
    height: 45px;
    line-height: 45px;
    text-align: center;
    box-shadow: 0 1px 2px 0 rgb(75 6 0 / 15%);
    font-size: 18px;
    position: relative;
    z-index: 3;
    color: #000;
    background-color: #fff;
}
.nav-header img {
    position: absolute;
    top: calc(50% - 11px);
    left: 10px;
    width: 11px;
    height: 20px;
}
.rule-bg,.rule-first-bg{
    background: url('../images/rule/rule_bg.png') no-repeat;
    background-size: 100% 100%;
    padding: 20px 5px 35px 5px;
}
.rule-long-bg{
    background: url('../images/rule/rule_long_bg.png') no-repeat;
    background-size: 100% 100%;
    padding: 20px 5px 45px 5px;
}
.rule-first-bg{
    padding: 20px 6px 32px 15px;
}
.rule-bg .title,.rule-first-bg .title,.rule-long-bg .title{
    font-size: 22px;
    font-family: SourceHanSerifCN-Heavy, SourceHanSerifCN;
    font-weight: 800;
    color: #86181D;
    line-height: 24px;
    letter-spacing: 1px;
    text-align: center;
}
.rule-bg .desc{
    font-size: 16px;
    font-family: PingFang-SC-Regular, PingFang-SC;
    font-weight: 400;
    color: #181818;
    line-height: 24px;
    letter-spacing: 2px;
    padding: 20px 15px 15px 15px;
    text-align: justify;
}
.rule-bg img,.rule-first-bg img ,.rule-long-bg img{
    padding: 0 3px;
}
.rule-first-bg .sec-title{
    font-size: 16px;
    font-family: PingFangSC-Semibold, PingFang SC;
    font-weight: 600;
    color: #181818;
    line-height: 16px;
    letter-spacing: 2px;
    margin: 20px auto 6px auto;
}
.rule-first-bg .desc{
    font-size: 16px;
    font-family: PingFang-SC-Regular, PingFang-SC;
    font-weight: 400;
    color: #181818;
    line-height: 24px;
    letter-spacing: 2px;
    margin-bottom: 10px;
}
.rule-long-bg .desc{
    margin: 20px 15px 10px 15px;
    font-size: 16px;
    font-family: PingFang-SC-Regular, PingFang-SC;
    font-weight: 400;
    color: #181818;
    line-height: 24px;
    letter-spacing: 2px;
}
.rule-btm-wrap .title{
    margin-bottom: 20px;
}
.rule-btm-wrap .sec-title{
    font-size: 16px;
    font-family: PingFang-SC-Regular, PingFang-SC;
    font-weight: 600;
    color: #181818;
    line-height: 24px;
    letter-spacing: 2px;
    padding-left: 15px;
}
.rule-btm-wrap .desc{
    padding-top: 5px;
    padding-bottom: 10px;
}