:root{--ink: #2a2a2a;--paper: #e9eef5;color-scheme:light}*{box-sizing:border-box}html,body{margin:0;height:100%}body{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;background:var(--paper);color:var(--ink)}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:16px}.game{position:relative;max-width:100%}.game-canvas{display:block;width:100%;height:auto;border:3px solid var(--ink);border-radius:4px;image-rendering:pixelated;touch-action:none;background:#f4f7fb}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none}.panel{pointer-events:auto;text-align:center;background:#ffffffdb;border:3px solid var(--ink);border-radius:6px;padding:18px 26px}.panel h1{margin:0 0 8px;letter-spacing:4px}.panel h2{margin:0 0 10px;letter-spacing:3px}.panel p{margin:4px 0}.panel .hint{margin-top:12px;opacity:.7;font-size:.85rem}.mute-toggle{pointer-events:auto;position:absolute;top:8px;left:10px;border:none;background:transparent;font-size:1.2rem;cursor:pointer;line-height:1}.credit{font-size:.8rem;opacity:.6}