html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#000}#fly,#walk{position:absolute;top:0;right:0;bottom:0;left:0}#walk{display:none;z-index:5}#hud{position:absolute;top:0;right:0;bottom:0;left:0;z-index:10;pointer-events:none;font:13px/1.45 system-ui,sans-serif;color:#fff}.hud-panel{position:absolute;top:12px;left:12px;max-width:300px;padding:10px 12px;border-radius:8px;background:#0000008c}.hud-panel b{color:#ffd479}.hud-mode{font-size:15px;font-weight:600;margin-bottom:4px}.hud-status{margin-top:6px;color:#ccc}.hud-status:empty{display:none}.hud-error{position:absolute;top:12px;left:50%;transform:translate(-50%);max-width:min(560px,calc(100% - 32px));padding:12px 16px;border-radius:8px;background:#961414eb;font-size:14px}.hud-error[hidden]{display:none}