html,body{margin:0;width:100%;height:100%;overflow:hidden;background:#05070a;color:#dffcff;font-family:Consolas,'Courier New',monospace}#game-shell,#game-root{position:fixed;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}#hud{position:fixed;top:16px;left:16px;z-index:20;min-width:210px;padding:12px 14px;border:1px solid rgba(0,255,255,.7);background:rgba(0,13,22,.78);pointer-events:none;line-height:1.55;font-size:13px}.hud-title{margin-bottom:7px;color:#00ffff;font-weight:700}#menu{position:fixed;top:16px;right:16px;z-index:30;display:flex;gap:8px}button{padding:10px 14px;border:1px solid #00dfe8;background:rgba(0,20,28,.9);color:#aefcff;font:600 13px Consolas,monospace;cursor:pointer}button:disabled{opacity:.38;cursor:default}#error-box{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:100;max-width:min(780px,90vw);padding:12px 16px;border:1px solid #ff5a5a;background:rgba(35,0,0,.92);color:#ffd7d7;white-space:pre-wrap}