.sk{max-width:460px;margin:0 auto}.sk-bar{display:flex;gap:var(--sp-2);align-items:flex-end;margin-bottom:var(--sp-2)}.sk-level{flex:1;display:flex;flex-direction:column;gap:var(--sp-1);font-size:var(--fs-xs);color:var(--muted)}.sk-level select{width:100%;padding:var(--sp-2);border-radius:var(--r-sm);background:var(--panel);border:1px solid var(--line);color:var(--text);font-size:var(--fs-md)}.sk-bar .btn{flex:0 0 auto}.sk-stats{display:flex;gap:var(--sp-2);margin-bottom:10px}.sk-stat{flex:1;padding:var(--sp-2);border-radius:var(--r-sm);background:var(--panel);border:1px solid var(--line);text-align:center;line-height:1.2}.sk-stat span{display:block;font-size:var(--fs-xs);color:var(--muted)}.sk-stat b{font-size:18px;font-variant-numeric:tabular-nums}.sk-boardwrap{position:relative}.sk-board{display:grid;grid-template-columns:repeat(9,1fr);border:2px solid var(--line-strong);border-radius:var(--r-sm);overflow:hidden;background:var(--panel2);-webkit-user-select:none;user-select:none;touch-action:manipulation}.sk-cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;direction:ltr;font-size:clamp(15px,4.6vw,21px);font-variant-numeric:tabular-nums;color:var(--accent);background:var(--panel);border-right:1px solid var(--line);border-bottom:1px solid var(--line);cursor:pointer;transition:background-color 90ms ease}.sk-cell:nth-child(9n){border-right:0}.sk-cell:nth-child(n+73){border-bottom:0}.sk-cell:nth-child(3n):not(:nth-child(9n)){border-right:2px solid var(--line-strong)}.sk-board .sk-cell:nth-child(n+19):nth-child(-n+27),.sk-board .sk-cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid var(--line-strong)}.sk-cell.is-given{color:var(--text);font-weight:700;cursor:default}.sk-cell.is-house{background:var(--panel2)}.sk-cell.is-same{background:color-mix(in srgb,var(--accent) 22%,var(--panel))}.sk-cell.is-sel{background:color-mix(in srgb,var(--accent) 38%,var(--panel))}.sk-cell.is-bad{color:var(--err)}.sk-cell.is-wrong{color:var(--err);box-shadow:inset 0 -3px 0 var(--err)}.sk-cell.has-notes{display:grid;grid-template-columns:repeat(3,1fr);align-content:center;font-size:clamp(7px,2vw,10px);color:var(--muted);line-height:1.1}.sk-cell.has-notes i{font-style:normal;text-align:center}.sk-over{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-2);padding:var(--sp-4);text-align:center;border-radius:var(--r-sm);background:color-mix(in srgb,var(--bg) 88%,transparent)}.sk-over-title{font-size:var(--fs-xl);font-weight:700;margin:0}.sk-over-sub{color:var(--muted);margin:0}.sk-over-btns{display:flex;gap:var(--sp-2);flex-wrap:wrap;justify-content:center}.sk-pad{display:grid;grid-template-columns:repeat(9,1fr);gap:var(--sp-1);margin-top:10px}.sk-key{display:flex;flex-direction:column;align-items:center;gap:1px;padding:var(--sp-2) 0;border-radius:var(--r-sm);background:var(--panel);border:1px solid var(--line);color:var(--text);cursor:pointer}.sk-key b{font-size:clamp(14px,4.4vw,18px)}.sk-key i{font-style:normal;font-size:10px;color:var(--muted)}.sk-key.is-done{opacity:.4}.sk-tools{display:flex;gap:var(--sp-2);margin-top:var(--sp-2)}.sk-tools .btn{flex:1;padding-inline:0}.sk-tools .btn.is-on{border-color:var(--accent);color:var(--accent)}.sk-msg{margin-top:var(--sp-2);font-size:var(--fs-sm);color:var(--muted);min-height:1.4em}