*{box-sizing:border-box}html,body,#app{background:#06101f;width:100%;height:100%;margin:0;font-family:Segoe UI,Microsoft JhengHei UI,sans-serif;overflow:hidden}canvas{display:block}.hud{z-index:2;color:#d7ebff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:none;background:#071121c7;border:1px solid #78b4ff73;border-radius:8px;min-width:260px;padding:14px 16px;position:fixed;top:16px;left:16px}.hud h1{margin:0 0 8px;font-size:18px}.hud p{margin:4px 0;font-size:14px}.hud .hint{color:#90b8e5;margin-top:10px;font-size:12px}