:root{color-scheme:dark;background:#1c3042}*{box-sizing:border-box}body{margin:0;overflow:hidden}#scene,canvas{position:absolute;inset:0;width:100%;height:100%;display:block}#loading{position:absolute;left:50%;top:50%;width:24px;height:24px;margin:-12px;border:1px solid #abc5d344;border-top-color:#c9e1ee;border-radius:50%;animation:spin 1s linear infinite}#loading.error{width:auto;height:auto;border:0;animation:none;color:#e0eaf0;font:14px system-ui;max-width:80vw;transform:translate(-50%,-50%)}@keyframes spin{to{transform:rotate(360deg)}}
#fps{position:fixed;right:12px;top:10px;padding:5px 7px;border-radius:3px;background:#09131b78;color:#c7d6dcba;font:10px/1.2 ui-monospace,SFMono-Regular,Consolas,monospace;pointer-events:none;font-variant-numeric:tabular-nums;z-index:5}