:root{--navy:#071846;--blue:#173e92;--sky:#4b82df;--yellow:#facc15;--orange:#f59e0b;--green:#22c55e;--red:#ef4444;--cream:#fff7d6;--ink:#172033;--panel:#0a2056e0;--line:#fff;--safe-bottom:88px;--hud-h:72px;--land:clamp(104px,12vw,170px)}*{box-sizing:border-box;min-width:0}html,body{color:#fff;background:#020617;width:100%;height:100%;margin:0;font-family:Microsoft JhengHei,Noto Sans TC,monospace;overflow:hidden}body{touch-action:manipulation}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;filter:grayscale(.55);opacity:.55}#app{isolation:isolate;background:linear-gradient(180deg,var(--navy),var(--blue) 55%,var(--sky));width:100vw;height:100dvh;position:relative;overflow:hidden}#stars{z-index:0;pointer-events:none;position:absolute;inset:0;overflow:hidden}.star{opacity:.75;background:#fff;border-radius:50%;width:3px;height:3px;animation:2.8s ease-in-out infinite 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