#BGcurtain,body.BGlock-scroll{overflow:hidden}:root{--BGduration:1000ms;--BGeasing:cubic-bezier(0.51, -0.05, 0.58, 1);--BGImageLeft:url("https://iili.io/KYokjDv.jpg");--BGImageRight:url("https://iili.io/KYokhOJ.jpg");--BGImageCenter:url("https://iili.io/K5c9RuS.png");--BGImageCenterWidth:250px;--BGImageCenterHeight:250px;--BGImageCenterTime:1s;--BGImageCenterOpacityTime:1.5s;--BGImageCenterRotate:360deg}#BGcurtain{position:fixed;inset:0;z-index:9999;pointer-events:auto;display:block}.BGpanel{position:absolute;top:0;bottom:0;width:50%;background-size:cover;background-repeat:no-repeat;transition:transform var(--BGduration) var(--BGeasing);will-change:transform;z-index:100000000000}.BGpanel.BGleft{left:0;transform:translateX(0);background-image:var(--BGImageLeft);background-position:right center}.BGpanel.BGright{right:0;transform:translateX(0);background-image:var(--BGImageRight);background-position:left center}#BGcurtain.BGopen .BGpanel.BGleft{transform:translateX(-100%)}#BGcurtain.BGopen .BGpanel.BGright{transform:translateX(100%)}#BGcurtain .BGlogo{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#fff;font-size:1.4rem;letter-spacing:1px;text-shadow:0 2px 8px rgba(0,0,0,.6);width:var(--BGImageCenterWidth);height:var(--BGImageCenterHeight);background:var(--BGImageCenter) no-repeat center/contain;z-index:100000000001;border-radius:100%;box-sizing:border-box;transition:transform var(--BGImageCenterTime) ease-in-out,opacity var(--BGImageCenterOpacityTime) ease-in-out,filter .5s ease-in-out,border .3s var(--BGeasing)}#BGcurtain.BGopen .BGlogo{transform:translate(-50%,200%) rotate(var(--BGImageCenterRotate));opacity:0;border:0 solid #e8e8e800}.BGlogoPen{filter:drop-shadow(0px 0px 10px rgb(0, 242, 255))}.BGlogoPenBorder{border:30px solid #fff;transition:border 3s var(--BGeasing)}#BGtoggleBtn{position:fixed;z-index:99999999999999;top:20px;left:20px;padding:.6rem 1rem;background:#0b63ff;color:#fff;border-radius:8px;border:0;cursor:pointer;font-weight:600}