#main-container {
    background: 
        linear-gradient(rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.65)),
        url("https://www.loliapi.com/acg") !important;
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    background-attachment: fixed !important;
}

/* 保留原有的透明效果 */
#page-container>#main-container .content,
#page-container>#page-footer .content,
#page-container>#page-header .content,
#page-container>#page-header .content-header {
    background: transparent !important;
}

/* 移动端优化 */
@media (max-width: 768px) {
    #main-container {
        background-attachment: scroll !important;
    }
}