* {
    margin: 0;
    padding: 0;
}

a,
a:hover,
a:active,
a:visited,
a:link,
a:focus {
    display: block;
    width: 100%;
    height: 100%;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-tap-highlight-color: transparent;
    outline: none;
    background: none;
    text-decoration: none;
}

div {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-tap-highlight-color: transparent;
    outline: none;
    background: none;
    text-decoration: none;
}

img {
    border: 0 none;
}

html {
    font-size: 625%;
    height: 100%;
}

html,
body {
    width: 100%;
    height: 100%;
}

body {
    max-width: 750px;
    min-width: 320px;
    margin: 0 auto;
    color: #1f1f1f;
    font-size: 0.28rem;
    font-family: "微软雅黑", "[PingFangSC]", "[HYQiHei]";
    background: #fff;
    height: 100%;
}

.index {
    width: 100%;
    height: 100%;
    background: url(../image/mobile_background1.webp)no-repeat;
    background-size: 100% 100%;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.main {
    width: 5.46rem;
    padding-top: 3.5rem;
}

.top {
    width: 100%;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.logo {
    width: 1.6rem;
    height: 1.6rem;
}

.logo img {
    width: 100%;
    height: 100%;
}

.top span {
    width: 100%;
    display: flex;
    justify-content: center;
    font-size: .48rem;
    font-weight: bold;
    margin-top: .46rem;
}

.btn {
    width: 100%;
    height: 1rem;
    background-color: #45b7ff;
    background-size: 100% 100%;
    margin-top: 1.8rem;
    position: relative;
    border-radius: 0.5rem;
}

.weChat {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}

.btn a {
    display: block;
    font-size: .4rem;
    position: relative;
    color: #fff;
    width: 100%;
    height: 100%;
    line-height: 1rem;
    text-align: center;
}

.btn a.loading::after {
    content: '';
    position: absolute;
    left: 0px;
    top: 0px;
    right: 0px;
    bottom: 0px;
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, .5);
}

.btn a.loading::before {
    content: '';
    display: inline-block;
    width: .5rem;
    height: .5rem;
    margin-right: 0.2rem;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 50%;
    vertical-align: -13%;
    clip-path: polygon(0% 0%, 100% 0%, 100% 30%, 0% 30%);
    -webkit-animation: spin 2s linear infinite;
    animation: spin 2s linear infinite;
}


@-webkit-keyframes spin {
    0% {
        -webkit-transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.mask {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

.mask img {
    width: 2.94rem;
    height: 1.36rem;
    float: right;
    margin: .5rem .5rem 0 0;
}