.box {
    max-width: 750px;
    min-height: 100vh;
    padding-top: 2rem;
    box-sizing: border-box;
    background: url("../img/bgm.png") no-repeat;
    background-size: cover;
    margin: 0 auto;
    display: flex;
    align-items: center;
    flex-direction: column;
}
.logo {
    width: 11.125rem;
    margin-bottom: 1rem;
}
.swiper{
    width: 100%;
    height: calc(21.25rem + 20px);
    position: relative;
}
.swiper-wrapper {
    height: 21.25rem!important;
}
.swiper-slide {
    width: 100%;
    height: 100%;
}
.swiper-slide img {
    width: 100%;
    height: 100%;
}
.swiper-pagination-bullet {
    width: 1.125rem!important;
    height: 0.375rem!important;
    border-radius: 0.375rem!important;
    background-color: #C256FF!important;
}
.btn {
    margin-top: 2rem;
    width: 12rem;
    height: 3.625rem;
    background: url("../img/btn.png") no-repeat;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    font-size: 1.375rem;
    font-weight: bold;
}
.open-app {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9375rem;
    color: #4B2C4A;
}
.open-app-btn-text {
    margin-left: 0.75rem;
    color: #C256FF;
    font-weight: bold;
    text-decoration: underline;
}
.tips {
    margin-top: 1.5rem;
    width: calc(100% * 0.8);
    font-size: 0.75rem;
    color: #4B2C4AB2;
    text-align: center;
    text-indent: 2rem;
}