* {
    margin: 0;
    padding: 0;
    font-family: SourceHanSansCN-Light;
}
a {
    text-decoration: none;
    cursor: pointer;
    color: #fff;
}
#app {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle,#273D47, #12182B);
    overflow: hidden;
    color: #FFFFFF;
}
.content {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-bottom: .4rem;
}
.title {
    font-size: .4rem;
    margin-bottom: .05rem;
}
.desc {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0.4rem 0 0.25rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid #fff;
    border-width: 1px 0 1px 0;
}
.subTitle, .welcome {
    font-size: .3rem;
}
.welcome {
    margin-bottom: .5rem;
}
.buttonGroup {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    gap: 16px;
}
.button {
    display: block;
    font-size: .3rem;
    height: 0.6rem;
    width: 3.2rem;
    line-height: .6rem;
    text-align: center;
    border-radius: 0.6rem;
    border: 1px solid #fff;
}
.imageGroup {
    margin-bottom: 48px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.imageItem {
    display: flex;
    height: 64px;
    line-height: 64px;
}
.app-download-img {
    width: 180px;
    height: auto;
    object-fit: contain;
}