*{margin:0;padding:0}html,body{overflow:hidden}.webgl{position:fixed;top:0;left:0;outline:none}#instructions{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#0009;color:#fff;font-family:Helvetica Neue,Arial,sans-serif;font-size:18px;text-align:center;cursor:pointer;z-index:10;transition:opacity .4s}#instructions p{margin:4px 0}#instructions.hidden{opacity:0;pointer-events:none}#joystick-zone{position:fixed;bottom:30px;left:30px;width:120px;height:120px;border-radius:50%;background:#ffffff26;border:2px solid rgba(255,255,255,.3);z-index:20;display:none;touch-action:none}#joystick-knob{position:absolute;width:50px;height:50px;border-radius:50%;background:#ffffff80;top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none}