html {
    font-size: calc(100 * 100vw / 1920);
}
* {
    margin: 0;
    padding: 0
}
body {
    position: relative;
    min-height: 100vh;
    color: #000;
    font-size: clamp(14px, .18rem, 18px);
    font-family: 'Microsoft YaHei', sans-serif, Arial;
    background: #000 url(../images/bg.jpg) no-repeat left center / cover;
    overflow: hidden;
}

.logo {
    position: absolute;
    left: .3rem;
    top: .1rem;
    width: 5.52rem;
    height: 2.89rem;
    background: url(../images/logo.png) no-repeat center / contain;
}
.con-box {
    position: absolute;
    left: 50%;
    bottom: .4rem;
    transform: translateX(-50%);
    box-sizing: border-box;
}
.text-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    row-gap: .2rem;
    padding: .4rem;
    max-width: 9.6rem;
    text-align: left;
    box-sizing: border-box;
    background-color: rgba(255, 255, 255, .8);
    border-radius: .8rem .2rem .8rem .2rem;
    border: 2.5px solid #52403e;
    box-shadow: 0 0 .1rem #fff;
}
.text-list p {
    line-height: 2;
}
.btn {
    display: flex;
    justify-content: center;
    margin-top: .1rem;
}
.btn a {
    width: 2.2rem;
    height: .66rem;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
    border: 2px solid #fff;
    border-radius: .1rem;
    overflow: hidden;
    cursor: pointer;
    transition: all .4s ease;
}
.btn a:hover {
    filter: drop-shadow(0 0 .1rem rgba(0, 0, 0, .3));
}
.ios-btn {
    background-image: url(../images/ios.png);
}
.google-btn {
    background-image: url(../images/google.png);
}

@media (max-width: 900px) {
    html {
        font-size: calc(100 * 100vw / 750);
    }
    body {
        background: url(../images/bg-m.jpg) no-repeat center bottom / cover;
        overflow: scroll;
    }

    .wrap {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: space-between;
        row-gap: .5rem;
        box-sizing: border-box;
        height: 100vh;
    }
    .logo {
        position: relative;
        left: .2rem;
        top: .3rem;
        width: 3.82rem;
        height: 2rem;
    }
    .con-box {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        padding: .3rem .3rem .6rem;
    }
    .text-list {
        row-gap: .28rem;
        padding: .3rem;
        width: 100%;
        height: auto;
        font-size: clamp(10px, .24rem, 18px);
        border-radius: .4rem .1rem .4rem .1rem;
        box-shadow: 0 0 10px #3e4066 inset;
    }
    .text-list p {
        line-height: 1.8;
    }
    .btn {
        margin: 0;
    }
    .btn a {
        width: 2.6rem;
        height: .78rem;
        border-radius: .16rem;
    }
}