html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,Liberation Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji";font-size:14px;zoom:100%}#loading{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#ffffffbf;text-align:center}#loading img{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}#video-container{height:100vh;display:inline-block}#video-container video{width:100vw;display:block;max-height:80vh;pointer-events:none}#video-controls-container{text-align:center}#subject-id-container,#intro-container,#experiment-ended-container{width:calc(100vw - 16px);padding:8px}#subject-id-container input{margin-left:8px;padding:4px;border:1px solid #000}#video-controls-container button{display:block;background:#000;color:#fff;padding:6px 10px;border:none;margin:8px auto;cursor:pointer;font-size:14px}#video-controls-container button:disabled{background:#777;color:#ddd;cursor:default}.hidden{display:none!important}video::-webkit-media-controls{display:none!important;opacity:0}video::-webkit-media-controls-start-playback-button{display:none!important}