body,
html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: "Microsoft Yahei", sans-serif;
}

img {
    width: 100%;
    display: block;
}

ul,
ul li {
    list-style: none;
    margin: 0;
    padding: 0;
}

.clearfix::after {
    content: "";
    display: block;
    clear: both;
}

.app {
    width: 100%;
    /* max-width: 750px; */
    margin: 0 auto;
    min-height: 100vh;
    text-align: center;
    position: fixed;
    background: url(../images/bh.png) no-repeat center center;
    background-size: cover;
}

.hidden {
    visibility: hidden;
}

.h5-view {
    display: block;
}

.pc-view {
    display: none;
}

.h5-view .logo {
    width: 4.7rem;
    margin: 2rem auto 0;
}

.h5-view .buttons {
    margin-top: 0;
}

.h5-view .button {
    width: 5rem;
    height: 1rem;
    display: block;
    margin: 0.4rem auto 0;
}

@media (min-width: 1024px) {
    .h5-view {
        display: none;
    }

    .pc-view {
        display: block;
    }

    .app {
        max-width: none;
        background: url(../images/bp.png) no-repeat center center;
        background-size: cover;
    }

    .pc-view .main {
        margin-left: -294px;
        position: absolute;
        left: 50%;
        top: 40%;
        transform: translateY(-50%);
        -webkit-transform: translateY(-50%);
    }

    .pc-view .list li img {
        width: 100%;
        height: auto;
    }

    .pc-view .btnUl {
        margin-top: 40px;
        text-align: center;
    }

    .pc-view .btnUl li {
        display: inline-block;
        margin: 0 20px;
    }
}