.menu{width:100%;max-width:460px;margin:0 auto;padding:max(env(safe-area-inset-top),24px) 20px 40px;display:flex;flex-direction:column;gap:18px;min-height:100dvh;justify-content:center}.menu-head{text-align:center;margin-bottom:6px}.menu-title{margin:0;font-size:2rem;font-weight:600;letter-spacing:.01em}.mode-select{display:flex;flex-direction:column;gap:8px}.mode-pill{align-self:center;max-width:100%;display:flex;padding:2px;border:1px solid var(--line-box);border-radius:9px;background:var(--paper-raised)}.mode-option{flex:1 1 auto;min-width:0;white-space:nowrap;padding:6px 10px;border:none;border-radius:7px;background:transparent;color:var(--ink-soft);font-family:inherit;font-size:.85rem;cursor:pointer;transition:background .15s ease,color .15s ease}.mode-option--active{background:var(--accent-soft);color:var(--accent)}.mode-desc{margin:0;padding:0 6px;min-height:1.3em;text-align:center;font-size:.8rem;line-height:1.3;color:var(--ink-faint)}.menu-tiers{display:flex;flex-direction:column;gap:10px}.menu-tier{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:12px;padding:16px 18px;border:1px solid var(--line-box);border-radius:12px;background:var(--paper-raised);color:var(--ink);font-family:inherit;cursor:pointer;text-align:left;transition:transform .06s ease,border-color .15s ease}.menu-tier-best{display:flex;flex-direction:column;align-items:flex-end;gap:1px;flex-shrink:0;font-size:.78rem;color:var(--ink-faint);font-variant-numeric:tabular-nums}.menu-tier-clean{color:var(--accent);opacity:.75}.menu-tier-score{color:var(--accent);font-size:.9rem;font-weight:600}.menu-tier:active{transform:translateY(1px)}.menu-tier:hover{border-color:var(--accent)}.menu-tier-label{font-size:1.1rem}.menu-tier-mastered{display:inline-flex;align-items:center;margin-left:7px;vertical-align:-1px;color:var(--accent)}.menu-settings-toggle{align-self:center;margin-top:4px;padding:8px 16px;border:none;background:none;color:var(--ink-soft);font-family:inherit;font-size:.9rem;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.menu-settings{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line-cell);padding-top:12px}.menu-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 4px;border:none;background:none;color:var(--ink);font-family:inherit;font-size:.92rem;cursor:pointer;width:100%;text-align:left}.toggle-text{display:flex;flex-direction:column;gap:2px}.toggle-hint{font-size:.78rem;color:var(--ink-faint)}.toggle-switch{width:38px;height:22px;border-radius:11px;background:var(--line-box);position:relative;transition:background .15s ease;flex-shrink:0}.toggle-switch:after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:var(--paper);transition:transform .15s ease}.toggle-switch[data-on=true]{background:var(--accent)}.toggle-switch[data-on=true]:after{transform:translate(16px)}.menu-row--theme{align-items:center}.theme-swatches{display:inline-flex;gap:10px}.theme-swatch{width:30px;height:30px;padding:0;border:1px solid var(--line-box);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .1s ease,box-shadow .15s ease}.theme-swatch-dot{width:11px;height:11px;border-radius:50%}.theme-swatch--on{box-shadow:0 0 0 2px var(--paper),0 0 0 4px var(--accent)}.theme-swatch:active{transform:scale(.94)}.menu-field-hint{margin:-8px 4px 4px;font-size:.78rem;line-height:1.4;color:var(--ink-faint)}.seg{display:inline-flex;border:1px solid var(--line-box);border-radius:8px;overflow:hidden}.seg button{padding:6px 10px;border:none;background:var(--paper-raised);color:var(--ink-soft);font-family:inherit;font-size:.8rem;cursor:pointer;text-transform:capitalize}.seg button.on{background:var(--accent-soft);color:var(--accent)}.grid{position:relative;width:100%;max-width:min(92vw,calc(100dvh - 278px),560px);aspect-ratio:1;background:var(--paper-raised);border-radius:4px;box-shadow:0 2px 10px var(--shadow);-webkit-user-select:none;user-select:none;touch-action:manipulation}@media (min-width: 700px){.grid{max-width:min(92vw,calc(100dvh - 210px),760px)}}.grid-lines,.cage-lines,.cage-sums{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.grid-lines{z-index:3}.cage-lines{z-index:3;color:var(--cage)}.cage-sums{z-index:4;display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr)}.box-line{stroke:var(--line-box);stroke-width:2.4;vector-effect:non-scaling-stroke}.frame-line{fill:none;stroke:var(--line-box);stroke-width:3;vector-effect:non-scaling-stroke}.cage-line{fill:none;stroke:currentColor;stroke-width:1.6;stroke-opacity:.68;stroke-dasharray:2 4;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}.cage-line--frozen{stroke:color-mix(in srgb,var(--accent) 60%,var(--cage));stroke-opacity:1}@media (prefers-reduced-motion: no-preference){.cage-line--crystallize{animation:cage-crystallize .64s ease-out}}@keyframes cage-crystallize{0%{stroke:var(--accent);stroke-opacity:.25;filter:drop-shadow(0 0 0 transparent)}45%{stroke:var(--accent);stroke-opacity:1;filter:drop-shadow(0 0 5px color-mix(in srgb,var(--accent) 80%,transparent))}to{stroke:color-mix(in srgb,var(--accent) 60%,var(--cage));stroke-opacity:1;filter:none}}.cage-enter{animation:cage-enter .42s ease-out}@keyframes cage-enter{0%{opacity:0;transform:scale(.985)}to{opacity:1;transform:scale(1)}}.shift-ripple-layer{position:absolute;top:0;right:0;bottom:0;left:0;z-index:3;overflow:hidden;border-radius:4px;pointer-events:none}.shift-ripple{position:absolute;width:240%;aspect-ratio:1;border-radius:50%;transform:translate(-50%,-50%) scale(0);background:radial-gradient(circle,color-mix(in srgb,var(--accent) 32%,transparent) 0%,color-mix(in srgb,var(--accent) 15%,transparent) 38%,transparent 68%);pointer-events:none}@media (prefers-reduced-motion: no-preference){.shift-ripple{animation:shift-ripple .7s ease-out forwards}}@keyframes shift-ripple{0%{opacity:.4;transform:translate(-50%,-50%) scale(0)}to{opacity:0;transform:translate(-50%,-50%) scale(1)}}.grid-cells{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr);z-index:2}.cell{position:relative;margin:0;padding:0;border:.5px solid var(--line-cell);background:transparent;font:inherit;color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:center;overflow:hidden;outline:none}.cell::-moz-focus-inner{border:0}.cell--peer{background:var(--highlight-peer)}.cell--same{background:var(--highlight-same)}.cell--selected{background:var(--cell-active)}.cell--error .cell-value{color:var(--error)}.cell-value{font-size:clamp(1rem,5.2vw,2rem);line-height:1;transition:color .15s ease}.cell-value--entry{color:color-mix(in srgb,var(--accent) 70%,var(--ink))}@media (prefers-reduced-motion: no-preference){.cell-value--house{animation:house-shimmer .9s ease-out}}@keyframes house-shimmer{0%{transform:translateY(0) scale(1);text-shadow:none}40%{transform:translateY(-2px) scale(1.2);text-shadow:0 0 13px color-mix(in srgb,var(--accent) 92%,transparent)}to{transform:translateY(0) scale(1);text-shadow:none}}@media (prefers-reduced-motion: no-preference){.cell-value--solve{animation:cell-solve .62s ease-out both}}@keyframes cell-solve{0%{transform:translateY(0) scale(1);text-shadow:none}45%{transform:translateY(-3px) scale(1.28);color:var(--accent);text-shadow:0 0 16px color-mix(in srgb,var(--accent) 95%,transparent)}to{transform:translateY(0) scale(1);text-shadow:none}}@media (prefers-reduced-motion: no-preference){.grid--solving{animation:grid-solve 1.2s ease-out}}@keyframes grid-solve{0%{box-shadow:0 2px 10px var(--shadow)}45%{box-shadow:0 0 26px color-mix(in srgb,var(--accent) 42%,transparent),0 2px 10px var(--shadow)}to{box-shadow:0 2px 10px var(--shadow)}}.cage-sum-cell{display:flex;align-items:flex-start;justify-content:flex-start}.cage-sum{margin:0 0 0 1px;padding:0 2px;border-radius:3px;background:var(--paper-raised);font-size:clamp(.55rem,2.1vw,.7rem);font-weight:700;line-height:1.05;color:var(--ink);transition:color .3s ease}.cage-sum--done{color:var(--accent)}.pencil{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);width:100%;height:100%;padding:24%}.pencil-mark{display:flex;align-items:center;justify-content:center;font-size:clamp(.42rem,1.65vw,.6rem);font-weight:500;color:var(--ink-soft);line-height:1}.pad{width:100%;max-width:min(92vw,560px);margin:8px auto 0;display:flex;flex-direction:column;gap:8px}@media (min-width: 700px){.pad{max-width:min(92vw,calc(100dvh - 210px),760px)}}.pad-digits{display:grid;grid-template-columns:repeat(10,1fr);gap:6px}.pad-key{aspect-ratio:1;border:1px solid var(--line-box);border-radius:10px;background:var(--paper-raised);color:var(--ink);font-family:inherit;font-size:clamp(1.1rem,6vw,1.5rem);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .06s ease,background .12s ease}.pad-key:active{transform:translateY(1px);background:var(--cell-active)}.pad-key--pencil{color:var(--ink-soft)}.pad-key--done{opacity:.4}.pad-erase{color:var(--ink-soft)}.pad-erase svg{width:55%;height:auto;max-width:24px}@media (max-width: 520px){.pad{max-width:min(92vw,calc(100dvh - 278px))}.pad-digits{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:none}.pad-key{flex:0 0 calc(20% - 6.5px);aspect-ratio:auto;height:54px;font-size:1.7rem}.pad-erase svg{width:26px}}.pad-controls{display:flex}.pad-mode{flex:1;padding:12px;border:1px solid var(--line-box);border-radius:10px;background:var(--paper-raised);color:var(--ink);font-family:inherit;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px}.pad-mode--on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.pad-mode-label{font-size:1.1rem}.pad-mode-state{padding:2px 10px;border-radius:999px;border:1px solid currentColor;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}.pad-mode--on .pad-mode-state{background:var(--accent);border-color:var(--accent);color:var(--paper)}.toolbar{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:min(92vw,560px);margin:0 auto;padding:2px}.toolbar-group{display:flex;align-items:center;gap:8px}.tool{min-width:38px;height:36px;padding:0 10px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--ink-soft);font-family:inherit;font-size:1.15rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background .12s ease,color .12s ease}.tool:hover:not(:disabled){background:var(--paper-raised);color:var(--ink)}.tool:disabled{opacity:.3;cursor:default}.timer-readout{display:inline-flex;align-items:center;justify-content:center;min-width:56px;height:36px;color:var(--ink-soft);font-variant-numeric:tabular-nums;font-size:.95rem}@media (min-width: 700px){.timer-readout{height:34px}}.tool--shuffle{gap:7px;padding:0 12px;font-size:.9rem}.tool--shuffle:not(:disabled){color:var(--accent)}.tool-shuffle-count{min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:var(--accent);color:var(--paper);font-size:.68rem;line-height:17px;font-variant-numeric:tabular-nums;text-align:center}.tool-shuffle-count[data-empty=true]{background:var(--ink-faint)}@media (min-width: 700px){.toolbar{max-width:min(92vw,calc(100dvh - 210px),760px)}.tool{height:34px}}.toolbar-status{gap:14px}.score-readout{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;min-width:48px;height:36px;padding:0 8px;line-height:1}.score-readout-value{color:var(--accent);font-size:1.05rem;font-weight:600;font-variant-numeric:tabular-nums}.score-readout-label{margin-top:2px;color:var(--ink-faint);font-size:.6rem;letter-spacing:.06em;text-transform:uppercase}@media (min-width: 700px){.score-readout{height:34px}}.win{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--paper) 93%,transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:win-fade .5s ease both;z-index:20}.win-card{text-align:center;padding:32px 40px;display:flex;flex-direction:column;align-items:center;gap:6px}.win-mark{margin:0;font-size:1.9rem;letter-spacing:.02em}.win-detail{margin:0;color:var(--ink-soft);text-transform:capitalize;font-variant-numeric:tabular-nums}.win-score{display:flex;flex-direction:column;align-items:center;gap:2px;margin:6px 0 4px}.win-score-value{font-size:3.2rem;font-weight:600;line-height:1;color:var(--ink);font-variant-numeric:tabular-nums;display:inline-flex;align-items:baseline;gap:8px}.win-score-max{font-size:1.1rem;font-weight:400;color:var(--ink-faint)}.win-score-grade{font-size:1.05rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}.win-breakdown{display:flex;flex-direction:column;gap:4px;width:100%;max-width:320px;margin:6px 0 10px;padding:12px 14px;border:1px solid var(--line-box);border-radius:10px;background:var(--paper-raised)}.win-breakdown-row{display:grid;grid-template-columns:4.5rem 4.5rem 1fr;align-items:baseline;gap:10px;font-size:.85rem}.win-breakdown-label{color:var(--ink-soft)}.win-breakdown-value{color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap}.win-breakdown-value--max{color:var(--accent)}.win-breakdown-value svg{margin-left:5px;vertical-align:-1px}.win-breakdown-note{color:var(--ink-faint);text-align:right;font-size:.8rem}.win-actions{margin-top:10px;display:flex;flex-direction:column;align-items:stretch;gap:10px;width:100%;max-width:280px}.win-next{padding:12px 24px;border:1px solid var(--accent);border-radius:10px;background:var(--accent-soft);color:var(--accent);font-family:inherit;font-size:1rem;cursor:pointer;transition:background .15s ease}.win-next:hover{background:color-mix(in srgb,var(--accent-soft) 70%,var(--accent))}.win-menu{padding:10px 24px;border:1px solid var(--line-box);border-radius:10px;background:transparent;color:var(--ink-soft);font-family:inherit;font-size:.92rem;cursor:pointer;transition:border-color .15s ease,color .15s ease}.win-menu:hover{border-color:var(--accent);color:var(--ink)}@keyframes win-fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.shortcuts{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;padding:20px;background:color-mix(in srgb,var(--paper) 90%,transparent);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:30;animation:shortcuts-fade .2s ease both}.shortcuts-card{width:100%;max-width:320px;padding:20px 22px;border:1px solid var(--line-box);border-radius:14px;background:var(--paper-raised);box-shadow:0 8px 30px var(--shadow)}.shortcuts-title{margin:0 0 14px;font-size:1.05rem;color:var(--ink)}.shortcuts-list{margin:0;display:flex;flex-direction:column;gap:10px}.shortcuts-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.shortcuts-keys{display:flex;align-items:center;gap:4px;flex-shrink:0}.shortcuts-keys kbd{min-width:22px;padding:2px 6px;border:1px solid var(--line-box);border-bottom-width:2px;border-radius:6px;background:var(--paper);color:var(--ink-soft);font-family:inherit;font-size:.78rem;text-align:center;line-height:1.3}.shortcuts-sep{color:var(--ink-faint);font-size:.78rem}.shortcuts-action{margin:0;font-size:.88rem;color:var(--ink-soft);text-align:right}.shortcuts-close{margin-top:18px;width:100%;padding:9px;border:1px solid var(--line-box);border-radius:9px;background:transparent;color:var(--ink-soft);font-family:inherit;font-size:.9rem;cursor:pointer;transition:border-color .15s ease,color .15s ease}.shortcuts-close:hover{border-color:var(--accent);color:var(--ink)}@keyframes shortcuts-fade{0%{opacity:0}to{opacity:1}}.game{width:100%;max-width:640px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;padding:max(env(safe-area-inset-top),2px) 14px max(env(safe-area-inset-bottom),10px);gap:6px}.game-header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.game-back{justify-self:start;width:34px;height:34px;border:none;background:none;color:var(--ink-soft);font-size:1.6rem;line-height:1;cursor:pointer}.game-tier{text-transform:capitalize;color:var(--ink-soft);font-size:.95rem}.game-header-actions{justify-self:end;display:inline-flex;align-items:center;gap:8px}.game-help{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-box);border-radius:50%;background:transparent;color:var(--ink-soft);font-family:inherit;font-size:.9rem;line-height:1;cursor:pointer;transition:border-color .15s ease,color .15s ease}.game-help:hover{border-color:var(--accent);color:var(--ink)}.game-settings{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;display:flex;align-items:flex-end;justify-content:center}.game-settings-sheet{width:100%;max-width:460px;padding:8px 20px max(env(safe-area-inset-bottom),20px);border:1px solid var(--line-box);border-bottom:none;border-radius:16px 16px 0 0;background:var(--paper-raised);box-shadow:0 -8px 30px var(--shadow);animation:settings-rise .22s ease both}.game-settings-head{display:flex;align-items:center;justify-content:space-between;padding:8px 4px 4px;color:var(--ink);font-size:1rem}.game-settings-done{border:none;background:none;color:var(--accent);font-family:inherit;font-size:.95rem;cursor:pointer;padding:4px 6px}@keyframes settings-rise{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.game-board{flex:1;display:flex;align-items:center;justify-content:center}.game-board-inner{position:relative;width:100%;display:flex;justify-content:center}.game-pad{display:flex}.game-pad--left{justify-content:flex-start}.game-pad--right{justify-content:flex-end}.game-board-inner{transition:opacity .2s ease}.game-board-inner--reforming{opacity:.9}.game-board-inner--paused .grid{filter:blur(9px);pointer-events:none;-webkit-user-select:none;user-select:none}.pause-veil{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:none;border-radius:12px;background:color-mix(in srgb,var(--paper) 55%,transparent);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);color:var(--ink-soft);font-family:inherit;cursor:pointer}.pause-veil-icon{font-size:2rem;line-height:1;color:var(--accent)}.pause-veil-label{font-size:1.1rem;color:var(--ink)}.pause-veil-hint{font-size:.85rem;color:var(--ink-faint)}@media (min-width: 700px){.game{max-width:840px;gap:4px;padding-top:8px;padding-bottom:12px}.game-header{min-height:0;margin-bottom:-2px}.game-back{width:32px;height:32px;font-size:1.5rem}}.app-loading{width:100%;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px}.app-loading-cancel{padding:8px 16px;border:none;background:none;color:var(--ink-faint);font-family:inherit;font-size:.9rem;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.app-loading-cancel:hover{color:var(--ink-soft)}.app-loading-mark{color:var(--ink-soft);font-size:1rem;letter-spacing:.02em;animation:loading-pulse 1.4s ease-in-out infinite}@keyframes loading-pulse{0%,to{opacity:.4}50%{opacity:1}}:root[data-theme=clay]{--paper: #f7f5f1;--paper-raised: #fdfcf9;--ink: #201d19;--ink-soft: #625d55;--ink-faint: #8c8578;--line-cell: #cbc5b6;--line-box: #837c6c;--cage: #767063;--accent: #c26a37;--accent-soft: #eed7c4;--highlight-peer: #ede9e2;--highlight-same: #e6e0d5;--cell-active: #ecd9c4;--error: #b3453a;--shadow: rgba(30, 26, 20, .1);color-scheme:light}:root[data-theme=fern]{--paper: #f3f6f2;--paper-raised: #fafdf9;--ink: #1b1e1b;--ink-soft: #596159;--ink-faint: #838d81;--line-cell: #c2ccbe;--line-box: #7b8579;--cage: #6d776b;--accent: #2e9d5c;--accent-soft: #cfe9d6;--highlight-peer: #e8ede7;--highlight-same: #dfe7dd;--cell-active: #d5e8d1;--error: #b3453a;--shadow: rgba(20, 30, 22, .1);color-scheme:light}:root[data-theme=midnight]{--paper: #14161b;--paper-raised: #1d1f26;--ink: #e5e9f0;--ink-soft: #949aa6;--ink-faint: #6d7381;--line-cell: #3f4550;--line-box: #737b8a;--cage: #8791a1;--accent: #66b0e6;--accent-soft: #1e2c3d;--highlight-peer: #292d36;--highlight-same: #333b48;--cell-active: #3c506c;--error: #e0715f;--shadow: rgba(0, 0, 0, .45);color-scheme:dark}:root,:root[data-theme=plum]{--paper: #161318;--paper-raised: #201d25;--ink: #ebe6f0;--ink-soft: #9a94a4;--ink-faint: #6f6a7b;--line-cell: #443e51;--line-box: #7a7289;--cage: #8f8799;--accent: #b483e6;--accent-soft: #2b2338;--highlight-peer: #2d2836;--highlight-same: #383148;--cell-active: #483b60;--error: #e0715f;--shadow: rgba(0, 0, 0, .45);color-scheme:dark}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}button:focus,button:focus-visible{outline:none}html,body,#root{height:100%;margin:0}body{background:var(--paper);color:var(--ink);font-family:Iowan Old Style,Palatino Linotype,Georgia,Times New Roman,serif;font-feature-settings:"lnum" 1,"tnum" 1;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overscroll-behavior:none}#root{display:flex;justify-content:center}