html,
body {
    position: relative;
    height: 100%;
}

body {
    background: #fff;
    font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.wrap {
    width: 100%;
    height: 100%;
    margin: auto;
}

.swiper-container {
    width: 100%;
    height: 100%;
}

.swiper-slide {
    text-align: center;
    background: #fff;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
}

.swiper-slide .back {
    width: 100%;
    height: 100%;
}

.fluid_mud {
    position: absolute;
}

.screen_guide {
    width: 50%;
    left: 25%;
    top: 25%;
    text-align: center;
    z-index: 1001;
}

.screen_guide img {
    width: 30%;
}

.screen_guide p {
    font-size: 20px;
    color: #fff;
}

.logo_desc {
    width: 4.9rem;
    top: 0;
    bottom: 1rem;
    left: 0;
    right: 0;
    margin: auto;
}

.logo_index {
    width: 2.3rem;
    top: 1.1rem;
    left: 0;
    right: 0;
    margin: auto;
}

.download-lg {
    width: 3.6rem;
    left: 0;
    right: 0;
    margin: auto;
    bottom: 3.6rem;
}

.download-lg img {
    vertical-align: top;
    width: 100%;
}

.topone {
    bottom: 1.3rem;
    left: 0.68rem;
    width: 2.9rem;
}

.permanent_free {
    bottom: 1.3rem;
    right: 0.68rem;
    width: 2.9rem;
}

.logo_main {
    top: 0.3rem;
    left: 0.3rem;
    width: 3rem;
}

.slide-main .download-sm {
    top: 0.38rem;
    width: 2.34rem;
    right: 0.23rem;
}

.slide-main .download-sm img {
    vertical-align: top;
    width: 100%;
}

.slide-main .copy_desc {
    bottom: 2.3rem;
    left: 0.3rem;
    height: 1.8rem;
}

.logo_last {
    width: 1.7rem;
    top: 0;
    bottom: 3rem;
    left: 0;
    right: 0;
    margin: auto;
}

.slide-last .download-lg {
    bottom: 2rem;
}

.slide-main .back {
    object-fit: cover;
    object-position: center center;
}