.game-shell{max-width:1050px;margin:auto;padding:2.5rem 1.2rem 5rem}.game-shell>header{max-width:760px;margin-bottom:2rem}.game-shell h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.35}.game-lead{font-size:1.1rem;color:var(--muted)}.game-layout{display:grid;grid-template-columns:1fr 300px;gap:2rem;align-items:start}.game-panel{padding:1.6rem;background:#f0f6f5;border-radius:22px;border:1px solid #cbdedb}.game-settings{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.2rem}.game-settings label{font-size:.9rem;display:grid;gap:.3rem}.game-settings select{padding:.65rem;border:1px solid #bccdc9;border-radius:7px;background:white;max-width:100%}.game-settings .game-checkbox{display:flex;align-items:center}.game-stats{display:flex;justify-content:space-between;gap:.6rem;margin:1rem 0}.game-stats div{display:grid;gap:.25rem;text-align:center}.game-stats small{font-size:.75rem;color:#46615b}.game-stats strong{font-size:1.5rem;font-variant-numeric:tabular-nums;color:#173d36}.light-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:420px;margin:1rem auto}.light-cell{aspect-ratio:1;border:2px solid #304b53;border-radius:14px;background:#213d45;color:#b5cbcd;font-size:1.8rem;cursor:pointer;touch-action:manipulation;transition:background .12s,transform .12s}.light-cell.on{background:#f2c65b;border-color:#ab7a1c;color:#513a0e}.light-cell:hover:not(:disabled){transform:translateY(-2px)}.light-cell:disabled{cursor:default;opacity:.78}.light-cell.hint{outline:4px solid #9c3671;outline-offset:2px}.light-cell:focus-visible{outline:4px solid #1d70e8;outline-offset:2px}.game-controls{display:flex;justify-content:center;flex-wrap:wrap;gap:.65rem}.game-controls .button{font-size:.9rem;padding:.7rem 1rem}.game-controls button:disabled{opacity:.5;cursor:default}.game-message{min-height:4em;line-height:1.8;font-size:.95rem;margin:1rem 0 0}.game-help{padding:1.5rem;border:1px solid var(--line);border-radius:16px;line-height:1.8}.game-help h2{font-size:1.2rem}.game-help ol{padding-left:1.2rem}.game-help li{margin-bottom:.8rem}.game-help p{font-size:.9rem}.game-small{color:var(--muted);font-size:.8rem}.game-shell button,.game-shell select,.game-shell input{font:inherit}.game-shell .light-cell{font-size:1.8rem}.game-shell .button:focus-visible{outline:3px solid #1d70e8;outline-offset:3px}@media(max-width:760px){.game-layout{grid-template-columns:1fr}.game-panel{padding:1rem}.light-grid{gap:8px}.game-settings{gap:.6rem}.game-stats strong{font-size:1.3rem}}@media(prefers-reduced-motion:reduce){.light-cell{transition:none}.light-cell:hover:not(:disabled){transform:none}}