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var(--control-border);background:var(--card);min-height:52px;color:var(--ink);cursor:pointer;touch-action:manipulation;border-radius:12px;padding:12px 16px;font-weight:650;line-height:1.4}.grid-puzzles button:hover:not(:disabled){background:var(--accent-soft)}.grid-puzzles button.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.grid-puzzles button.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.grid-puzzles button[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.grid-puzzles button:disabled{cursor:default;opacity:.45}.grid-puzzles summary{cursor:pointer;min-height:48px;padding-block:14px;font-weight:600}.grid-puzzles details p:last-child{margin-bottom:0}.grid-puzzles :is(button,input,summary):focus-visible{outline:3px solid var(--accent);outline-offset:3px}.grid-puzzles [hidden]{display:none!important}.grid-puzzles .actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;display:flex}.grid-puzzles .hint{color:var(--muted);font-size:.875rem}.grid-puzzles .feedback{min-height:56px;padding:16px 0}.grid-puzzles .feedback:empty{min-height:0;padding:0}.grid-puzzles .muted{color:var(--muted)}.grid-puzzles .grid-round-top{justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px;display:flex}.grid-puzzles .grid-round-top p{color:var(--muted);margin:0;font-size:.875rem}.grid-puzzles .practice-end{min-height:48px;color:var(--muted);text-underline-offset:4px;background:0 0;border-color:#0000;padding:10px 12px;font-size:.875rem;font-weight:500;text-decoration:underline}.grid-puzzles .grid-play-stage,.grid-puzzles .grid-result-stage{background:var(--card);border:1px solid var(--line);color:var(--ink);border-radius:16px;padding:24px}.grid-puzzles .grid-play-stage h2{font-weight:600}.grid-puzzles .grid-confirm{border:1px solid var(--line);background:var(--card);border-radius:16px;margin-block:16px;padding:20px}.grid-puzzles .grid-result-metrics{gap:32px;margin:24px 0;display:flex}.grid-puzzles .grid-result-metrics dt{color:var(--muted);font-size:.875rem}.grid-puzzles .grid-result-metrics dd{margin:4px 0;font-size:1.5rem;font-weight:650}.grid-puzzles .grid-review{margin-top:24px}.grid-puzzles .grid-review .grid-play-stage{border:0;padding:16px 0}.grid-puzzles .grid-review button:disabled{opacity:1}.grid-puzzles .grid-review :is(.actions,.magic-main-actions,.magic-edit-tools,.magic-type,.sdk-edit-tools,.sdk-hint-area,.sdk-check-action,.sky-edit,.sky-keypad),.grid-puzzles .grid-review .sky-feedback,.grid-puzzles .grid-review .magic-feedback{display:none}.grid-puzzles .grid-example .example-instruction{margin:0 0 16px;font-size:1rem;line-height:1.5}.grid-puzzles .example-scene{flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:160px;margin:12px 0 16px;display:flex}.grid-puzzles .example-grid{grid-template-columns:repeat(var(--example-size),1fr);font-variant-numeric:tabular-nums;gap:3px;width:min(100%,220px);display:grid}.grid-puzzles .example-grid>span,.grid-puzzles .example-chain>span,.grid-puzzles .example-kakuro>span{background:var(--card);aspect-ratio:1;border:1px solid #a9b6a8;border-radius:5px;justify-content:center;align-items:center;min-width:0;font-size:1.4rem;font-weight:650;display:flex}.grid-puzzles .example-target{outline:2px solid var(--accent);outline-offset:-2px;color:var(--accent);background:var(--accent-soft)!important}.grid-puzzles .example-equation{text-align:center;margin:0;font-size:1rem;font-weight:600}.grid-puzzles .example-sudoku{border:2px solid var(--ink);border-radius:4px;gap:0}.grid-puzzles .example-sudoku>span{border-radius:0;font-size:1.125rem}.grid-puzzles .example-sudoku>span:nth-child(4n+2){border-right:2px solid var(--ink)}.grid-puzzles .example-sudoku>span:nth-child(n+5):nth-child(-n+8){border-bottom:2px solid var(--ink)}.grid-puzzles .example-chain{text-align:center;grid-template-columns:1fr 22px 1fr 22px 1fr 22px 1fr;align-items:center;gap:6px;width:min(100%,360px);display:grid}.grid-puzzles .example-chain>b{font-size:1.5rem;font-weight:500}.grid-puzzles .example-binary{gap:5px;width:100%;max-width:360px}.grid-puzzles .example-binary>span{font-size:1.2rem}.grid-puzzles .example-kakuro{grid-template-columns:repeat(3,60px);gap:2px;display:grid}.grid-puzzles .example-kakuro>.example-block{background:#344b40;border-color:#344b40}.grid-puzzles .example-kakuro>.example-clue{background:var(--accent-soft);color:var(--ink);flex-direction:column;font-size:1.25rem;display:flex}.grid-puzzles .example-clue>small{font-size:.65rem;font-weight:500}.grid-puzzles .example-actions{margin:12px 0}.grid-puzzles .example-actions button{min-width:52px;min-height:44px;padding:10px 16px;font-size:.875rem}.grid-puzzles .example-actions .example-reset{text-underline-offset:4px;background:0 0;border-color:#0000;font-weight:500;text-decoration:underline}.grid-puzzles .example-feedback{color:var(--subject-ink);min-height:44px;margin:12px 0 0;font-size:.875rem;line-height:1.6}.grid-puzzles .example-skyline{width:100%;max-width:365px;height:210px}.grid-puzzles .example-nonogram{align-items:center;gap:14px;width:min(100%,350px);display:flex}.grid-puzzles .example-run-clue{font-size:1.5rem;font-weight:650}.grid-puzzles .example-run{grid-template-columns:repeat(5,1fr);gap:3px;width:100%;display:grid}.grid-puzzles .example-run>span{aspect-ratio:1;background:var(--card);border:1px solid var(--control-border);color:#fff;border-radius:4px;place-items:center;font-weight:700;display:grid}.grid-puzzles .example-run>.is-filled{background:var(--accent)}.grid-puzzles .example-run>.is-overlap{outline-offset:2px;outline:3px solid #9b5b2c}.grid-puzzles .example-range{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;width:100%;font-size:.875rem;display:flex}.grid-puzzles .example-range input{accent-color:var(--accent);max-width:160px;min-height:44px}.grid-puzzles .example-range span{font-variant-numeric:tabular-nums;min-width:50px}@media (width<=650px){.grid-puzzles .grid-play-stage,.grid-puzzles .grid-result-stage{padding:16px}.grid-puzzles .actions{gap:8px}.grid-puzzles .grid-round-top{margin-top:0}.grid-puzzles .example-scene{min-height:150px}.grid-puzzles .example-actions{gap:8px}.grid-puzzles .example-feedback{min-height:0}.grid-puzzles .example-kakuro{grid-template-columns:repeat(3,52px)}.grid-puzzles .example-chain{grid-template-columns:1fr 18px 1fr 18px 1fr 18px 1fr;gap:3px}.grid-puzzles .example-chain>span{font-size:1.125rem}.grid-puzzles .example-grid{max-width:200px}.grid-puzzles .example-binary{max-width:100%}.grid-puzzles .grid-result-stage .practice-result-actions{gap:12px}.grid-puzzles .grid-review .grid-play-stage{padding-inline:0}}.grid-puzzles .grid-assistance{color:var(--muted);margin-block:8px 20px;font-size:.875rem}.grid-puzzles .grid-next-note{color:var(--muted);margin-bottom:24px}.grid-puzzles .grid-review :is(.bin-tools,.bin-palette,.ng-tools,.ng-palette,.futo-tools,.futo-keypad,.kakuro-tools,.kakuro-keypad,.sdk-keypad,.magic-numberbank){display:none}.grid-puzzles .example-clue>small{overflow-wrap:anywhere;text-align:center;max-width:100%;padding-inline:2px;line-height:1.2}.grid-puzzles .example-kakuro{grid-template-columns:repeat(3,minmax(0,1fr));width:min(100%,270px)}.grid-puzzles .example-clue>small{overflow-wrap:normal;white-space:nowrap;font-size:.875rem}.grid-puzzles .ng-explanation .actions,.grid-puzzles .bin-explanation .actions,.grid-puzzles .futo-hint .actions,.grid-puzzles .kakuro-hint .actions{align-items:stretch}.grid-puzzles .puzzle-method-link{justify-items:start;gap:0;margin:16px 0 0;display:grid}.grid-puzzles .puzzle-method-link span{color:var(--muted);font-size:.8125rem}.grid-puzzles .puzzle-method-link a{min-height:44px;color:var(--accent);text-underline-offset:var(--underline-offset,4px);align-items:center;font-weight:600;display:inline-flex}.grid-puzzles .puzzle-method-link a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.grid-puzzles .grid-hint-proof{margin:12px 0 16px}.grid-puzzles .grid-hint-proof ol{margin:8px 0 16px;padding-left:24px}.grid-puzzles .grid-hint-proof li+li{margin-top:20px}.grid-puzzles .grid-hint-proof li p{margin:6px 0 0}.grid-puzzles [data-grid-hint-heading]:focus-visible{outline:2px solid var(--accent);outline-offset:5px;border-radius:3px}.grid-puzzles .grid-board-scroll{overscroll-behavior-x:contain;scrollbar-color:var(--control-border) var(--accent-soft);width:100%;min-width:0;max-width:100%;overflow-x:auto}.grid-puzzles .grid-scroll-hint{text-align:center;color:var(--muted);margin:12px 0;font-size:.875rem}