:root{--bg:#f8fafc;--bg-elev:#fff;--fg:#0f172a;--fg-muted:#475569;--fg-subtle:#64748b;--border:#e2e8f0;--border-strong:#cbd5e1;--accent:#7c3aed;--accent-hover:#6d28d9;--focus:#2563eb;--shadow-sm:0 1px 2px #0f172a0f, 0 1px 3px #0f172a0a;--shadow-md:0 4px 12px #0f172a14, 0 2px 4px #0f172a0a;--shadow-lg:0 12px 32px #0f172a1f, 0 4px 8px #0f172a0d;--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--tone-emerald-bg:#ecfdf5;--tone-emerald-fg:#047857;--tone-amber-bg:#fffbeb;--tone-amber-fg:#b45309;--tone-grass-bg:#f0fdf4;--tone-grass-fg:#15803d;--tone-sky-bg:#eff6ff;--tone-sky-fg:#1d4ed8;--tone-rose-bg:#fff1f2;--tone-rose-fg:#be123c;--tone-violet-bg:#f5f3ff;--tone-violet-fg:#6d28d9;--tone-indigo-bg:#eef2ff;--tone-indigo-fg:#4338ca;--tone-crimson-bg:#fef2f2;--tone-crimson-fg:#b91c1c;--tone-ochre-bg:#fffbeb;--tone-ochre-fg:#a16207;--tone-rust-bg:#fff7ed;--tone-rust-fg:#c2410c;--tone-teal-bg:#f0fdfa;--tone-teal-fg:#0f766e;--tone-gold-bg:#fefce8;--tone-gold-fg:#ca8a04;--tone-berry-bg:#fff1f5;--tone-berry-fg:#9f1239;--tone-purple-bg:#faf5ff;--tone-purple-fg:#7c3aed;--tone-cyan-bg:#ecfeff;--tone-cyan-fg:#0891b2;--tone-midnight-bg:#eef2ff;--tone-midnight-fg:#1e3a8a;--tone-slate-bg:#f1f5f9;--tone-slate-fg:#475569;--tone-plum-bg:#fdf4ff;--tone-plum-fg:#86198f;--ok-fg:#047857;--ok-bg:#d1fae5;--err-fg:#be123c;--err-bg:#ffe4e6;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;--font-mono:ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}[data-theme=dark]{--bg:#0b1120;--bg-elev:#131b2e;--fg:#e2e8f0;--fg-muted:#94a3b8;--fg-subtle:#64748b;--border:#1e293b;--border-strong:#334155;--accent:#a78bfa;--accent-hover:#c4b5fd;--shadow-sm:0 1px 2px #0006;--shadow-md:0 4px 12px #0006;--shadow-lg:0 12px 32px #00000080;--tone-emerald-bg:#022c22;--tone-emerald-fg:#6ee7b7;--tone-amber-bg:#2a1a04;--tone-amber-fg:#fcd34d;--tone-grass-bg:#052e16;--tone-grass-fg:#86efac;--tone-sky-bg:#0c1e3c;--tone-sky-fg:#93c5fd;--tone-rose-bg:#2a0a13;--tone-rose-fg:#fda4af;--tone-violet-bg:#1e1b3a;--tone-violet-fg:#c4b5fd;--tone-indigo-bg:#1e1b4b;--tone-indigo-fg:#a5b4fc;--tone-crimson-bg:#2a0a0a;--tone-crimson-fg:#f87171;--tone-ochre-bg:#2a2207;--tone-ochre-fg:#eab308;--tone-rust-bg:#2a1505;--tone-rust-fg:#fb923c;--tone-teal-bg:#042f2e;--tone-teal-fg:#2dd4bf;--tone-gold-bg:#2a2207;--tone-gold-fg:#facc15;--tone-berry-bg:#2a0a13;--tone-berry-fg:#fb7185;--tone-purple-bg:#1a1033;--tone-purple-fg:#a78bfa;--tone-cyan-bg:#083344;--tone-cyan-fg:#22d3ee;--tone-midnight-bg:#0a1733;--tone-midnight-fg:#93c5fd;--tone-slate-bg:#1e293b;--tone-slate-fg:#94a3b8;--tone-plum-bg:#2a0a2e;--tone-plum-fg:#e9aefc;--ok-fg:#6ee7b7;--ok-bg:#042f1f;--err-fg:#fda4af;--err-bg:#2a0a13}.topbar{justify-content:space-between;align-items:center;gap:16px;width:100%;padding:12px clamp(14px,3vw,24px);display:flex}.brand{color:var(--fg);letter-spacing:-.01em;white-space:nowrap;align-items:center;gap:10px;font-size:15px;font-weight:700;text-decoration:none;display:inline-flex}.brand:hover{color:var(--accent);text-decoration:none}.brand-mark{color:var(--accent);display:inline-flex}.brand-text{line-height:1}.brand-sep{color:var(--fg-subtle);margin:0 2px;font-weight:500}.brand-game{color:var(--fg-muted);white-space:nowrap;font-weight:600}.icon-button{background:var(--bg-elev);border:1px solid var(--border);cursor:pointer;width:40px;height:40px;color:var(--fg-muted);border-radius:999px;justify-content:center;align-items:center;padding:0;transition:background .15s,color .15s,border-color .15s,transform .15s;display:inline-flex}.icon-button:hover{color:var(--fg);border-color:var(--border-strong);transform:translateY(-1px)}.icon-button:focus-visible{outline:2px solid var(--focus);outline-offset:3px}[data-theme=light] .icon-moon,:root:not([data-theme=dark]) .icon-moon,[data-theme=dark] .icon-sun{display:none}.modal-backdrop{z-index:100;overscroll-behavior:contain;background:#0f172a8c;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal-backdrop[hidden],.modal-backdrop.hidden{display:none}.modal{background:var(--bg-elev);color:var(--fg);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);width:100%;max-width:560px;max-height:calc(100vh - 32px);font-family:var(--font-sans);padding:24px;position:relative;overflow-y:auto}.modal h2{letter-spacing:-.01em;color:var(--fg);margin:0 0 8px;font-size:1.25rem}.modal p{color:var(--fg-muted);line-height:1.55}.modal-close-x{width:32px;height:32px;color:var(--fg-muted);cursor:pointer;background:0 0;border:none;border-radius:999px;font-size:22px;line-height:1;transition:background .15s,color .15s;position:absolute;top:12px;right:12px}.modal-close-x:hover{background:var(--bg);color:var(--fg)}.modal-close-x:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.arcade-footer{color:var(--fg-subtle);text-align:center;border-top:1px solid var(--border);background:var(--bg);font-size:.9rem;font-family:var(--font-sans);padding:16px clamp(14px,3vw,24px)}.arcade-footer a{color:var(--fg-muted);font-weight:600;text-decoration:none}.arcade-footer a:hover{color:var(--accent);text-decoration:underline}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);font-family:var(--font-sans,system-ui, sans-serif);min-height:100vh;margin:0}.container{max-width:560px;margin:0 auto;padding:16px 16px 64px}.game-head{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;padding-bottom:12px;display:flex}.moves-line{align-items:baseline;gap:8px;display:flex}.moves-label{letter-spacing:.14em;text-transform:uppercase;color:var(--fg-subtle);font-size:10px;font-weight:600}.moves-value{color:var(--accent);font-variant-numeric:tabular-nums;font-size:26px;font-weight:800}.moves-target{color:var(--fg-subtle);font-size:12px}.scorebox{align-items:center;gap:16px;display:flex}.stat{flex-direction:column;align-items:flex-end;line-height:1.1;display:flex}.stat-label{letter-spacing:.12em;text-transform:uppercase;color:var(--fg-subtle);font-size:10px}.stat-value{color:var(--fg-muted);font-size:14px}.boards{align-items:flex-start;gap:18px;margin-bottom:18px;display:flex}.board-col{flex-direction:column;gap:8px;display:flex}.board-col.grow{flex:1}.board-title{letter-spacing:.12em;text-transform:uppercase;color:var(--fg-subtle);font-size:11px;font-weight:600}.mini{border:1px solid var(--border);border-radius:8px}.play-area{flex-direction:column;gap:4px;display:flex}.col-labels{gap:0;display:flex}.row-and-grid{align-items:flex-start;gap:4px;display:flex}.row-labels{flex-direction:column;gap:0;display:flex}.grid{border:1px solid var(--border);touch-action:manipulation;border-radius:8px}.lbl{background:var(--bg-elev-2,var(--bg));color:var(--fg-muted);border:1px solid var(--border);font-family:var(--font-mono,monospace);cursor:pointer;justify-content:center;align-items:center;padding:0;font-size:13px;font-weight:700;display:inline-flex}.col-labels .lbl{border-bottom:none;height:22px}.row-labels .lbl{border-right:none;width:22px}.lbl:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.lbl.hint{background:var(--accent);color:#fff;border-color:var(--accent);animation:1s infinite alternate pulse}@keyframes pulse{0%{opacity:.7}to{opacity:1}}.palette{justify-content:center;gap:12px;margin-bottom:16px;display:flex}.swatch{border:3px solid var(--border);cursor:pointer;border-radius:12px;width:48px;height:48px;transition:transform 80ms,border-color .12s}.swatch:hover{transform:translateY(-2px)}.swatch.sel{border-color:var(--fg);box-shadow:0 0 0 3px var(--accent)}.controls{flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:12px;display:flex}.btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;padding:11px 20px;font-family:inherit;font-size:14px;font-weight:700;transition:filter .12s,transform 80ms}.btn:hover:not(:disabled){filter:brightness(1.08)}.btn:active:not(:disabled){transform:translateY(1px)}.btn.secondary{color:var(--fg-muted);border:1px solid var(--border);background:0 0}.btn.secondary:hover:not(:disabled){color:var(--accent);border-color:var(--accent)}.btn.ghost{color:var(--accent);border:1px dashed var(--accent);background:0 0}.feedback{text-align:center;min-height:1.4em;color:var(--fg-muted);margin-bottom:12px;font-size:14px}.keys-hint{color:var(--fg-subtle);text-align:center;letter-spacing:.04em;margin:-4px 0 10px;font-size:11px}.results-card{text-align:center;background:var(--bg-elev);border:1px solid var(--accent);border-radius:var(--radius-md,12px);box-shadow:var(--shadow-md);margin-bottom:16px;padding:22px}.results-stars{color:var(--accent);letter-spacing:4px;font-size:44px;line-height:1}.results-sub{color:var(--fg-muted);margin:10px 0 16px;font-size:13px}.results-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.actions{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.mode-toggle{border:1px solid var(--border);border-radius:8px;display:inline-flex;overflow:hidden}.mode-btn{color:var(--fg-muted);cursor:pointer;background:0 0;border:none;padding:8px 16px;font-family:inherit;font-size:13px;font-weight:600}.mode-btn.active{background:var(--accent);color:#fff}@media (width<=480px){.container{padding:10px 10px 20px}.game-head{margin-bottom:12px;padding-bottom:8px}.moves-value{font-size:22px}.boards,.palette{gap:10px;margin-bottom:12px}.swatch{border-radius:10px;width:42px;height:42px}.controls{gap:8px;margin-bottom:8px}.btn{padding:10px 14px;font-size:13px}.feedback{margin-bottom:8px;font-size:13px}.keys-hint{display:none}}@media (width<=360px){.container{padding:8px 8px 16px}.swatch{width:38px;height:38px}.btn{padding:9px 11px}}