:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#f4f3ef;--ink:#22392f;--muted:#78847c;--green:#285743;--soft:#e7ede6;--line:#d9ded5;--red:#bc5650;--board-size:504px;--grid-line:#cbd3c8;--grid-line-width:1.5px;--box-line-width:3px;--digit-font:"Microsoft YaHei UI", serif}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,Segoe UI,Microsoft YaHei,sans-serif;font-size:14px}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:3px;outline:3px solid #9ebcad}button{touch-action:manipulation}.shell{max-width:1100px;margin:0 auto;padding:35px 42px 28px}.header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding-bottom:26px;display:flex}.site-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;margin-left:auto;display:flex}.site-action{color:#2d638c;white-space:nowrap;background:#edf5fb;border:1px solid #cbdfea;border-radius:8px;justify-content:center;align-items:center;gap:6px;min-height:38px;padding:9px 10px;font-size:13px;display:inline-flex}.site-action:hover:enabled{background:#dfedf7;border-color:#a8c7de}.site-action svg{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:17px;height:17px}.header{flex-wrap:wrap;gap:16px}@media (width<=560px){.site-actions{gap:5px}.site-action{gap:4px;padding:8px 6px;font-size:12px}.site-action svg{width:15px;height:15px}}.brand{flex:none;align-items:center;gap:12px;display:flex}.brand-icon{width:80px;height:auto;display:block;transform:translateY(3px)}.brand-name{width:180px;height:auto;display:block}.workspace{grid-template-columns:minmax(0,564px) minmax(280px,352px);justify-content:space-between;gap:32px;margin-top:24px;display:grid}.board-card{background:#fff;border:1px solid #e6e8e0;border-radius:18px;padding:16px 28px 22px;box-shadow:0 5px 24px #22392f06}.board-top{grid-template-columns:max-content minmax(0,1fr) max-content;align-items:center;gap:8px;margin-bottom:12px;display:grid}.timer{cursor:pointer;font-variant-numeric:tabular-nums;color:#55738e;text-align:center;white-space:nowrap;background:0 0;border:0;border-radius:6px;justify-self:center;padding:6px 4px;font:15px ui-monospace,Consolas,monospace}.rating-toggle,.analysis-button{color:#2d638c;white-space:nowrap;font-variant-numeric:tabular-nums;background:#edf5fb;border:1px solid #cbdfea;border-radius:8px;justify-content:center;align-items:center;gap:7px;min-height:36px;padding:7px 10px;font-size:12px;line-height:1;display:inline-flex}.rating-toggle{justify-self:start}.rating-toggle:hover,.rating-toggle[aria-expanded=true]{background:#dfedf7}.rating-toggle:focus-visible,.analysis-button:focus-visible{outline-color:#89b9db}.rating-separator{color:#aac5d9;font-weight:400}.rating-toggle strong{font-size:inherit;font-weight:600}.rating-points{align-items:center;gap:4px;display:inline-flex}.board-top svg{fill:none;stroke:currentColor;stroke-width:1.7px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:15px;height:15px}.analysis-button{color:#fff;background:#387aaf;border-color:#387aaf;justify-self:end}.analysis-button:hover{background:#2d699a;border-color:#2d699a}.rating-card{color:var(--muted);background:#f4f6f1;border-radius:7px;margin:0 0 12px;padding:10px 12px;font-size:11px;line-height:1.7}.rating-card p{margin:9px 0 0}.rating-section{border-top:1px solid var(--line);margin-top:14px;padding-top:12px}.rating-section h3{color:var(--ink);margin:0 0 7px;font-size:12px}.rating-usage{grid-template-columns:1fr 1fr;gap:6px 12px;display:grid}.rating-usage div{background:#fff9;border-radius:4px;padding:6px 8px}.rating-score-parts{color:var(--green);font-variant-numeric:tabular-nums}#retry-rating{border:1px solid var(--line);color:var(--green);background:#fff;border-radius:5px;margin:0 0 12px;padding:4px 8px;font-size:12px}#board-stage{scroll-margin-top:24px;position:relative}#board-stage:after,.sudoku-board-stage:after{content:"";z-index:6;pointer-events:none;border:var(--box-line-width) solid #4e6356;background:linear-gradient(to right, transparent calc(100% / 3 - var(--box-line-width)), #4e6356 calc(100% / 3 - var(--box-line-width)), #4e6356 calc(100% / 3), transparent calc(100% / 3), transparent calc(200% / 3 - var(--box-line-width)), #4e6356 calc(200% / 3 - var(--box-line-width)), #4e6356 calc(200% / 3), transparent calc(200% / 3)), linear-gradient(to bottom, transparent calc(100% / 3 - var(--box-line-width)), #4e6356 calc(100% / 3 - var(--box-line-width)), #4e6356 calc(100% / 3), transparent calc(100% / 3), transparent calc(200% / 3 - var(--box-line-width)), #4e6356 calc(200% / 3 - var(--box-line-width)), #4e6356 calc(200% / 3), transparent calc(200% / 3));border-radius:4px;position:absolute;inset:0}#human-preview{z-index:4;pointer-events:none;background:#fff;border-radius:4px;position:absolute;inset:0;overflow:hidden}.human-grid{height:100%}.human-marks span{border-radius:50%}.human-source{color:#285c82;background:#dceeff;font-weight:700}.human-remove{color:#9c321f;background:#ffe4ce;font-weight:700;text-decoration:line-through}.human-place{background:#cce7f5;outline:1px solid #2c7196}.human-lines{width:100%;height:100%;position:absolute;inset:0}.human-panel{border:1px solid var(--line);background:#f4f6f1;border-radius:8px;margin-top:24px;padding:13px;font-size:12px;line-height:1.65}.human-panel>summary{cursor:pointer;color:var(--green);font-weight:600}#human-count{color:var(--muted);padding-left:15px;font-size:10px;font-weight:400;display:block}.human-panel p{margin:10px 0}.human-controls{flex-wrap:wrap;gap:6px;margin:10px 0;display:flex}.human-controls button,.human-controls select{border:1px solid var(--line);color:var(--green);font:inherit;background:#fff;border-radius:5px;padding:5px 8px}#human-steps{overscroll-behavior:contain;gap:4px;max-height:320px;display:grid;overflow-y:auto}.human-step{text-align:left;color:var(--ink);font:inherit;background:#ffffffb8;border:1px solid #0000;border-radius:5px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;padding:8px;display:grid}.human-step.active{background:#e3eddf;border-color:#628c6e}.human-step-content{overflow-wrap:anywhere;min-width:0}.human-step-label{display:block}.human-step small{color:var(--muted);font-size:10px}.human-step-complexity{text-align:right;white-space:nowrap;color:var(--green);font-variant-numeric:tabular-nums;font-weight:600}.human-step-complexity small{font-weight:400;display:block}#human-step-detail{border-top:1px solid var(--line);margin-top:12px;padding-top:12px}#human-step-title{color:var(--green);font-size:12px}#human-step-reason,#human-step-effects{overflow-wrap:anywhere}.human-branch{background:#ffffff80;border:1px solid #cedfeb;border-radius:7px;min-width:0;margin:8px 0}.human-branch>summary{cursor:pointer;overflow-wrap:anywhere;color:#315875;padding:7px 8px}.human-branch-level{color:#406382;background:#deebf7;border-radius:4px;margin-right:6px;padding:0 5px;font-size:10px;display:inline-block}.human-branch-assumption{font-weight:600}.human-branch-meta{color:var(--muted);margin-top:2px;font-size:10px;display:block}.human-branch-body{border-left:2px solid #accbe4;min-width:0;margin:0 6px 7px;padding-left:clamp(6px,1vw,10px)}.human-branch ol{overflow-wrap:anywhere;margin:5px 0;padding-left:18px}.human-branch-children{min-width:0}.human-branch-conclusion{color:#78545d;overflow-wrap:anywhere}#human-branches{overscroll-behavior:contain;max-height:460px;overflow-y:auto}.human-legend{color:var(--muted);font-size:10px}.workspace{isolation:isolate;position:relative}.workspace.replaying:before{content:"";z-index:-1;inset:var(--replay-top,0px) 0 0;background:#edf6ff;border:1px solid #cddfee;border-radius:18px;position:absolute}.replaying .board-card{box-shadow:none;background:0 0;border-color:#0000}.replaying .input-controls,.replaying #seed,.replaying #game-message{display:none}.replaying .sidebar{padding:calc(var(--replay-top,0px) + 16px) 16px 18px 0}.replaying .human-panel{background:0 0;border:0;margin:0;padding:0}.replaying .human-controls{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0 0 12px;display:grid}.replaying .human-controls button{color:#36688e;white-space:nowrap;border-color:#c9dcea;padding:9px 8px}.replaying #human-update{grid-column:1/-1}.replaying #human-continue{color:#fff;background:#397bae;border-color:#397bae}.replaying .human-controls button:disabled{opacity:.4;cursor:default}.replaying .human-step.active{background:#dceeff;border-color:#76a8ce}.replaying #human-step-title,.replaying .human-step-complexity{color:#36688e}.human-grid .human-cell.human-error{color:#a32c2c;background:#ffe2e2;box-shadow:inset 0 0 0 2px #d16464}.replaying .human-step-correction{color:#932e2e;background:#fff0f0;border-color:#e4a3a3}.replaying .human-step-correction small{color:#a44747}.replaying .human-step-correction.active{background:#fdd;border-color:#c95656}@media (hover:hover){.replaying .human-step{cursor:pointer;transition:border-color .12s}.replaying .human-step:hover:not(.active){border-color:#76a8ce}.replaying .human-step-correction:hover:not(.active){border-color:#c95656}}.human-cell.human-filled-source{box-shadow:inset 0 0 0 2px #76a8ce}.timer:hover,.timer[aria-expanded=true]{color:#735393;background:#ebe5fa}#history-preview{z-index:4;pointer-events:none;background:#fff;border-radius:4px;position:absolute;inset:0;overflow:hidden}.workspace.history-mode:before{background:#f3effb;border-color:#ddd1ee}.history-panel{font-size:12px;line-height:1.65}.history-controls{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:8px;margin-bottom:12px;display:grid}.history-controls button{color:#765496;font:inherit;white-space:nowrap;cursor:pointer;background:#fff;border:1px solid #d9cce9;border-radius:6px;padding:9px 5px}.history-switches{grid-column:1/-1;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.history-controls button:disabled{opacity:.4;cursor:default}.history-switches button[aria-pressed=true]{background:#e6daf7;border-color:#bba1d8}#history-continue{color:#fff;background:#8963af;border-color:#8963af}#history-steps{overscroll-behavior:contain;gap:4px;max-height:320px;display:grid;overflow-y:auto}.history-step{text-align:left;color:#634f76;font:inherit;cursor:pointer;background:#ffffffb8;border:1px solid #0000;border-radius:5px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;padding:8px;display:grid}.history-step small{color:#8b7a9b;font-size:10px}.history-step time{color:#765496;font-variant-numeric:tabular-nums}.history-step.active{background:#e8ddf7;border-color:#b395d2}.history-grid{height:100%}.history-values{justify-content:center;align-items:center;gap:.08em;display:flex}.history-values:has(>span+span){font-size:.75em}.history-grid .history-remove,.history-diff .history-remove{color:#b43e44;background:0 0;font-weight:600;text-decoration:line-through;text-decoration-thickness:1.5px}.history-grid .history-add,.history-diff .history-add{color:#288455;font-weight:600}.history-grid :is(.history-add,.history-remove),.history-diff :is(.history-add,.history-remove){isolation:isolate;position:relative}.history-grid :is(.history-add,.history-remove):before,.history-diff :is(.history-add,.history-remove):before{content:"";z-index:-1;pointer-events:none;border-radius:50%;width:1.15em;height:1.15em;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.history-grid .history-add:before,.history-diff .history-add:before{background:#dcefdc}.history-grid .history-remove:before,.history-diff .history-remove:before{background:#fbe0e0}.history-diff{flex-wrap:wrap;align-items:center;gap:2px 8px;display:flex}.history-diff-cell{align-items:center;gap:3px;display:inline-flex}@media (hover:hover){.history-step:hover:not(.active){border-color:#b395d2}}@media (width<=699px),(orientation:portrait){.workspace.replaying{row-gap:0}.replaying .sidebar{padding:0 22px 22px}}#game{align-self:start;min-width:0}.board{aspect-ratio:1;border:var(--box-line-width) solid #4e6356;background:#fff;border-radius:4px;grid-template-rows:repeat(9,minmax(0,1fr));grid-template-columns:repeat(9,minmax(0,1fr));width:100%;display:grid;overflow:hidden}.cell{border:0;border-right:var(--grid-line-width) solid var(--grid-line);border-bottom:var(--grid-line-width) solid var(--grid-line);color:#38765b;min-width:0;min-height:0;font-family:var(--digit-font);font-variant-numeric:lining-nums tabular-nums;background:#fff;border-radius:0;justify-content:center;align-items:center;padding:0;font-size:clamp(20px,2.6vw,29px);font-weight:400;line-height:normal;transition:background .1s;display:flex;position:relative}.cell.box-right{border-right:var(--box-line-width) solid #4e6356}.cell.box-bottom{border-bottom:var(--box-line-width) solid #4e6356}.cell.last-col{border-right:0}.cell.last-row{border-bottom:0}.cell.given{color:var(--ink);font-weight:600}.cell.peer{background:#f1f4ef}.cell.same{background:#e1eae0}.cell.selected{z-index:1;background:#cbdece;box-shadow:inset 0 0 0 2px #6d937c}.cell.error{color:var(--red);background:#faebe8}.cell.hinted{color:#926d28}.cell:focus-visible{outline:none;box-shadow:inset 0 0 0 3px #50755d}.notes{color:#7b887e;width:100%;height:100%;font:11px var(--digit-font);font-variant-numeric:lining-nums tabular-nums;grid-template-rows:repeat(3,minmax(0,1fr));grid-template-columns:repeat(3,minmax(0,1fr));padding:3px;display:grid}.notes span{justify-content:center;align-items:center;min-width:0;min-height:0;display:flex}.sidebar{min-width:0;padding-top:3px}#board.hint-return .cell,.human-grid .cell{transition:none}@media (width>=700px) and (orientation:landscape){.workspace{grid-template-rows:auto minmax(0,1fr);grid-template-areas:"game challenge""game sidebar";row-gap:16px}.workspace>#game{grid-area:game}.workspace>.challenge-bar{grid-area:challenge;margin-bottom:0}.workspace>.sidebar{grid-area:sidebar}.workspace.replaying>.challenge-bar{visibility:hidden;pointer-events:none}.workspace.replaying>.sidebar{grid-row:1/-1}.workspace:not(.replaying) .sidebar{margin-top:var(--replay-top,0px);align-self:center;padding-top:0}}.challenge-bar{margin-bottom:10px}.challenge-controls{grid-template-columns:minmax(0,1fr);align-items:center;gap:10px;display:grid}.puzzle-actions{grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:10px;margin-top:8px;display:grid}#new-game,#previous-game{white-space:nowrap;letter-spacing:0;border-radius:6px;height:40px;padding:0 10px;font-size:12px}#new-game.searching{isolation:isolate;opacity:1;cursor:default;position:relative;overflow:hidden}#new-game.searching:before{content:"";z-index:-1;background:linear-gradient(90deg,#0000,#b8ddff99,#0000);animation:1.6s ease-in-out infinite new-puzzle-search;position:absolute;inset:0}@keyframes new-puzzle-search{0%{transform:translate(-100%)}to{transform:translate(100%)}}@media (prefers-reduced-motion:reduce){#new-game.searching:before{opacity:.45;animation:none;transform:none}}.help-button{border:1px solid var(--line);width:30px;height:30px;color:var(--green);background:0 0;border-radius:50%;flex:none;place-items:center;padding:0;font-size:15px;font-weight:600;display:grid}.help-button:hover{background:var(--soft)}.difficulty{background:#e9ece5;border-radius:9px;grid-template-columns:repeat(7,minmax(0,1fr));gap:4px;padding:4px;display:grid}.difficulty button{color:#758174;white-space:nowrap;background:0 0;border:0;border-radius:6px;min-width:0;padding:9px 0;font-size:12px}.difficulty button.active{color:var(--green);background:#fff;font-weight:600;box-shadow:0 1px 4px #22392f0c}.primary{background:var(--green);color:#fff;letter-spacing:1px;border:0;border-radius:9px;width:100%;padding:13px;font-size:13px}.primary:hover{background:#204835}.divider{background:var(--line);height:1px;margin:24px 0}.tools{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-top:12px;display:grid}.tool{color:#5b6d5f;background:0 0;border:1px solid #dbe0d7;border-radius:9px;flex-direction:column;align-items:center;gap:7px;padding:12px 3px 10px;font-size:11px;display:flex}.tool:hover,.tool.active{background:var(--soft);border-color:#a6b7a8}.tool svg{stroke:currentColor;stroke-width:1.6px;fill:none;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px}.tool.active{color:var(--green);background:#e5eee1;border-color:#9eb397}#notes{isolation:isolate;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;position:relative;overflow:hidden}#notes:before{content:"";z-index:-1;pointer-events:none;transform-origin:bottom;background:#abc59b80;position:absolute;inset:0;transform:scaleY(0)}#notes.long-press-pending:before{animation:note-hold-fill var(--long-press-duration) linear forwards}#notes.long-press-fired:before{animation:none;transform:scaleY(1)}#notes.long-press-fired{box-shadow:inset 0 0 0 2px #71906b}@keyframes note-hold-fill{0%{transform:scaleY(0)}to{transform:scaleY(1)}}.input-controls{width:100%;max-width:504px;margin:0 auto}.keypads{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:352px;margin:0 auto;display:grid}.number-pad{aspect-ratio:1;background:#fff;border:1px solid #e0e5dc;border-radius:12px;grid-template-rows:repeat(3,minmax(0,1fr));grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;padding:7px;display:grid}.number-pad button{min-width:0;min-height:0;color:var(--green);font-size:24px;font-family:var(--digit-font);font-variant-numeric:lining-nums tabular-nums;background:0 0;border:0;border-radius:6px;place-items:center;padding:0;display:grid;position:relative}.number-pad button:hover:enabled{background:var(--soft)}.note-indicator{border:1.5px solid #92a396;border-radius:50%;width:7px;height:7px;position:absolute;top:4px;right:4px}.note-pad button[aria-pressed=true] .note-indicator{background:var(--green);border-color:var(--green)}.note-pad button[aria-pressed=true]{background:#edf3ea}.number-pad button:disabled,.input-controls button:disabled{cursor:default}.shortcuts{color:var(--muted);margin-top:13px;font-size:10px;line-height:1.9}.game-message{color:var(--green);overflow-wrap:anywhere;margin:12px 2px 0;font-size:12px;line-height:1.8}.game-message.error-status{color:var(--red)}.seed{color:var(--muted);overflow-wrap:anywhere;margin-top:17px;font-size:10px;line-height:1.7}.seed button{font:inherit;color:inherit;text-align:left;text-underline-offset:3px;background:0 0;border:0;padding:0;text-decoration:underline}.footer{border-top:1px solid var(--line);color:#8b948a;justify-content:space-between;gap:20px;margin-top:32px;padding-top:19px;font-size:10px;line-height:1.8;display:flex}.footer strong{color:#687767;font-weight:500}.loading-dot{animation:.8s infinite alternate pulse}@keyframes pulse{to{opacity:.3}}.win .board{border-color:#7b9a68}.win .below-board{color:#54764b}dialog{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:16px;width:min(460px,100vw - 32px);padding:28px;box-shadow:0 24px 100px #1d342b25}dialog::backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#20382f66}dialog h2{margin:0 0 12px;font-size:21px;font-weight:500}dialog p{color:var(--muted);font-size:12px;line-height:1.9}dialog textarea{resize:vertical;border:1px solid var(--line);width:100%;min-height:145px;color:var(--ink);background:#fff;border-radius:8px;padding:12px;font:13px/1.7 ui-monospace,Consolas,monospace}dialog .dialog-actions{gap:10px;margin-top:18px;display:flex}dialog .dialog-actions button{flex:1}dialog .secondary{border:1px solid var(--line);color:var(--ink);background:0 0;border-radius:8px;padding:11px}#difficulty-guide{width:min(540px,100vw - 32px);max-height:calc(100dvh - 40px);padding:24px;overflow-y:auto}.difficulty-guide-heading{justify-content:space-between;align-items:center;gap:16px;display:flex}.difficulty-guide-heading h2{margin:0}#difficulty-guide h3{margin:18px 0 8px;font-size:13px}#difficulty-guide-tiers{margin:16px 0}.difficulty-guide-tier{border-bottom:1px solid var(--line);grid-template-columns:40px minmax(0,1fr);gap:12px;padding:10px 0;font-size:12px;line-height:1.8;display:grid}.difficulty-guide-tier dt{color:var(--green);font-weight:600}.difficulty-guide-tier dd{color:var(--muted);margin:0}.dialog-error{min-height:18px;color:var(--red)!important}.file-label{color:var(--green);cursor:pointer;margin-top:12px;font-size:12px;text-decoration:underline;display:inline-block}.file-label input{display:none}[hidden]{display:none!important}#import-dialog{max-height:calc(100dvh - 32px);overflow-y:auto}.image-workspace{align-items:start;display:grid}.image-source-section,.image-review-section{min-width:0}.image-drop{text-align:center;background:#edf4fa;border:1px dashed #a1b7c9;border-radius:12px;padding:22px 16px}.image-drop.drag-over{background:#dceeff;border-color:#4b8dbd}.image-drop p{margin:10px 0 0}.image-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.image-actions .primary{width:auto}.image-stage{background:#eaf0f4;border-radius:10px;justify-content:center;margin:10px 0;padding:10px;display:flex}#image-source{touch-action:none;width:auto;max-width:100%;height:auto;max-height:min(46dvh,430px);margin:auto;display:block}#image-name{overflow-wrap:anywhere;margin:12px 0 4px;font-size:12px}#image-status{min-height:24px;color:var(--green);margin:12px 0}.image-help{margin:10px 0;font-size:12px}.image-recognition-actions{margin-top:12px}.image-options{align-items:center;gap:7px;font-size:12px;display:flex}#image-summary{font-size:14px}.sudoku-board-stage{position:relative}.board{touch-action:none}.board .cell{-webkit-user-select:none;user-select:none}.image-review-grid .cell.note-cell{background:#e6f1f8}.image-review-grid .cell.uncertain{background:#fff2cb}.image-review-grid .cell.selected{background:#cbdece}.image-review-grid .cell.error{background:#faebe8}.image-review-grid .cell:disabled{opacity:1;cursor:default}#image-note-mode[aria-pressed=true]{color:var(--green);background:#e5eee1;border-color:#9eb397}.image-cell-popup{z-index:30;width:226px;max-width:calc(100vw - 24px);color:var(--ink);pointer-events:none;background:#f5faff;border:1px solid #bbcfdd;border-radius:10px;margin:0;padding:9px;position:fixed;inset:auto;box-shadow:0 6px 20px #264f6f26}.image-cell-comparison{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.image-cell-comparison figure{min-width:0;margin:0}.image-cell-comparison canvas{aspect-ratio:1;background:#fff;border:1px solid #d4dfe7;border-radius:5px;width:100%;display:block}@media (width<=700px){#image-source{max-height:38dvh}.image-review-grid .cell{font-size:clamp(20px,6vw,29px)}}@media (width>=700px) and (width<=950px) and (orientation:landscape){.shell{padding:24px}.workspace{grid-template-columns:minmax(0,1fr) minmax(260px,300px);gap:24px}.board-card{padding:16px 22px 22px}.tools{gap:5px}}@media (width<=699px),(orientation:portrait){.shell{max-width:720px;padding:24px}.workspace{grid-template-columns:minmax(0,1fr);gap:0}.workspace>.challenge-bar{width:100%}.workspace>.sidebar{margin-top:24px}.workspace.replaying>.sidebar{margin-top:0}.board-card{width:100%;max-width:564px;margin:0 auto;padding:16px 22px 22px}.challenge-bar{max-width:564px;margin:0 auto 10px}.sidebar{width:100%;max-width:564px;margin:0 auto}.cell{font-size:29px}.tools{grid-template-columns:repeat(6,1fr)}.divider{margin:19px 0}.footer{margin-top:27px}}@media (width<=430px){.puzzle-actions{gap:6px}.help-button{width:28px;height:28px}.difficulty{border-radius:6px;gap:1px;padding:3px}.difficulty button{font-size:11px}#new-game,#previous-game{height:38px;padding:0 7px;font-size:11px}.shell{padding:20px 15px}.header{padding-bottom:20px}.workspace{margin-top:20px}.board-card{border-radius:12px;padding:12px}.board-top{gap:6px;margin-bottom:10px}.rating-toggle,.analysis-button{gap:5px;min-height:34px;padding:7px;font-size:11px}.board-top svg{width:13px;height:13px}.timer{font-size:13px}.cell{font-size:25px}.notes{padding:1px;font-size:9px}.tools{gap:5px}.tool{padding:10px 2px;font-size:10px}.footer{font-size:9px}.keypads{gap:12px;max-width:312px}.number-pad{gap:2px;padding:5px}.number-pad button{font-size:23px}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}#import-dialog{width:min(1240px,100vw - 24px);padding:22px 26px}.import-header{grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;display:grid}.import-header h2{text-align:center;margin:0;font-size:20px}.import-nav{color:#356c97;background:0 0;border:0;border-radius:6px;justify-self:start;padding:10px 6px;font-size:15px}.import-submit{justify-self:end;font-weight:600}.import-submit:disabled{color:#94a3af;opacity:.6}#import-error{min-height:0;margin:6px 0}#import-error:empty{display:none}#import-dialog .image-drop{flex-direction:column;justify-content:center;min-height:290px;margin-top:20px;padding:38px 24px;display:flex}.import-entry-actions{grid-template-columns:repeat(3,minmax(0,1fr));align-items:stretch;gap:18px;display:grid}.import-entry-actions>button,.import-entry-actions>label{text-align:center;justify-content:center;align-items:center;width:100%;min-height:60px;font-size:15px;display:flex}.import-file-label{cursor:pointer}.import-file-label:focus-visible{outline-offset:3px;outline:3px solid #9ebcad}.import-drop-help{justify-content:center;align-items:flex-start;gap:9px;display:flex;margin-top:24px!important}.import-drop-help svg{fill:none;stroke:#668ba7;stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:22px;height:22px}.import-drop-help span{max-width:660px}.import-header-middle{justify-content:center;align-items:center;min-width:0;display:flex}#import-dialog:not([data-import-view=entry]) #import-title{display:none}.import-edit-toolbar{justify-content:center;align-items:center;gap:12px;margin:0;display:flex}#import-dialog[data-import-view=image] .import-edit-toolbar{justify-content:space-between}.import-clear-wrap{position:relative}.import-clear-menu{z-index:12;background:#fff;border:1px solid #c8d9e5;border-radius:8px;min-width:150px;padding:5px;display:grid;position:absolute;top:calc(100% + 5px);right:0;box-shadow:0 6px 18px #254c6d20}.import-clear-menu button{color:var(--ink);text-align:left;white-space:nowrap;background:0 0;border:0;border-radius:5px;padding:11px 13px}.import-clear-menu button:hover,.import-clear-menu button:focus-visible{background:#e8f2fa}.import-content{isolation:isolate;display:flow-root;position:relative}.image-adjust-panel{z-index:10;overscroll-behavior:contain;background:#eaf4fc;border:1px solid #c8e0f1;border-radius:10px;margin:0;padding:16px;position:absolute;inset:0;overflow:auto}#image-import-pane[inert]{pointer-events:none}.image-adjust-panel #image-name{margin-top:0}#image-adjust-status{color:var(--green);margin:12px 0 0}#image-adjust-status:empty{display:none}.image-adjust-panel .image-stage{background:#dfedf7}.image-adjust-columns{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:20px;display:grid}.image-adjust-columns>div{min-width:0}.image-adjust-columns .image-stage{align-items:center;height:min(46dvh,430px)}.image-adjust-columns #image-source,#image-selection-preview{width:auto;max-width:100%;height:auto;max-height:100%;display:block}#image-selection-preview{margin:auto}@media (width<=760px){.image-adjust-columns{grid-template-columns:minmax(0,1fr);gap:12px}}#image-import-pane{grid-template-columns:minmax(0,.9fr) minmax(0,1.4fr);gap:24px;margin-top:18px}#import-dialog[data-import-view=manual] #image-import-pane{max-width:720px;margin:8px auto 0;display:block}.image-display-stage{border:var(--box-line-width) solid #4e6356;background:#e9f0f5;border-radius:4px;padding:0;position:relative;overflow:hidden}.image-display-stage:after{content:"";pointer-events:none;background:linear-gradient(to right, transparent calc(3 * 100% / 9 - var(--box-line-width)), #4e6356 calc(3 * 100% / 9 - var(--box-line-width)), #4e6356 calc(3 * 100% / 9), transparent calc(3 * 100% / 9)), linear-gradient(to bottom, transparent calc(3 * 100% / 9 - var(--box-line-width)), #4e6356 calc(3 * 100% / 9 - var(--box-line-width)), #4e6356 calc(3 * 100% / 9), transparent calc(3 * 100% / 9)), linear-gradient(to right, transparent calc(6 * 100% / 9 - var(--box-line-width)), #4e6356 calc(6 * 100% / 9 - var(--box-line-width)), #4e6356 calc(6 * 100% / 9), transparent calc(6 * 100% / 9)), linear-gradient(to bottom, transparent calc(6 * 100% / 9 - var(--box-line-width)), #4e6356 calc(6 * 100% / 9 - var(--box-line-width)), #4e6356 calc(6 * 100% / 9), transparent calc(6 * 100% / 9)), linear-gradient(to right, transparent calc(1 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(1 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(1 * 100% / 9), transparent calc(1 * 100% / 9)), linear-gradient(to bottom, transparent calc(1 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(1 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(1 * 100% / 9), transparent calc(1 * 100% / 9)), linear-gradient(to right, transparent calc(2 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(2 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(2 * 100% / 9), transparent calc(2 * 100% / 9)), linear-gradient(to bottom, transparent calc(2 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(2 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(2 * 100% / 9), transparent calc(2 * 100% / 9)), linear-gradient(to right, transparent calc(4 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(4 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(4 * 100% / 9), transparent calc(4 * 100% / 9)), linear-gradient(to bottom, transparent calc(4 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(4 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(4 * 100% / 9), transparent calc(4 * 100% / 9)), linear-gradient(to right, transparent calc(5 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(5 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(5 * 100% / 9), transparent calc(5 * 100% / 9)), linear-gradient(to bottom, transparent calc(5 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(5 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(5 * 100% / 9), transparent calc(5 * 100% / 9)), linear-gradient(to right, transparent calc(7 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(7 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(7 * 100% / 9), transparent calc(7 * 100% / 9)), linear-gradient(to bottom, transparent calc(7 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(7 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(7 * 100% / 9), transparent calc(7 * 100% / 9)), linear-gradient(to right, transparent calc(8 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(8 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(8 * 100% / 9), transparent calc(8 * 100% / 9)), linear-gradient(to bottom, transparent calc(8 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(8 * 100% / 9 - var(--grid-line-width)), var(--grid-line) calc(8 * 100% / 9), transparent calc(8 * 100% / 9));position:absolute;inset:0}#image-display{aspect-ratio:1;width:100%;height:auto;display:block}.image-display-tabs{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;margin:0 0 10px;display:grid}.image-display-toggle{grid-column:2}.image-recognition-option{white-space:nowrap;grid-column:1;justify-self:start;gap:5px}.image-recognition-option input{width:14px;height:14px;margin:0}@media (width<=900px){.image-recognition-option{gap:4px;font-size:11px}}.image-display-toggle{color:#668399;background:#edf4fa;border:1px solid #c7dbe9;border-radius:7px;align-items:center;gap:2px;padding:2px;display:inline-flex}.image-display-toggle span{border-radius:5px;padding:5px 10px;font-size:12px;line-height:1}.image-display-toggle span.active{color:#245e88;background:#d5e8f7;box-shadow:0 1px 3px #245e8814}#image-summary{min-height:20px;margin:0 0 8px}#image-results{grid-template-columns:minmax(0,1fr) 114px;align-items:start;gap:16px;display:grid}.image-review-controls{flex-direction:column;align-self:center;gap:10px;min-width:0;margin-top:0;display:flex}#image-note-buttons,#image-candidate-buttons{flex:none;gap:3px;width:114px;padding:6px}#image-note-buttons button,#image-candidate-buttons button{min-height:0;font-size:21px}.image-review-controls>.tool{flex-direction:row;width:100%;min-height:42px;padding:6px}#image-candidate-buttons button{color:#557e9d;font-size:18px;position:relative}#image-candidate-buttons button:after{content:"";border:1px solid;border-radius:50%;width:5px;height:5px;position:absolute;top:4px;right:4px}#image-candidate-buttons button[aria-pressed=true]:after{background:currentColor}.import-shake{animation:.36s ease-in-out import-shake}@keyframes import-shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}@media (prefers-reduced-motion:reduce){.import-shake{animation-duration:.01ms}}@media (width>=761px){#import-dialog[data-import-view=image] #image-import-pane{grid-template-rows:auto auto;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 114px;gap:10px 24px}#import-dialog[data-import-view=image] .image-source-section,#import-dialog[data-import-view=image] #image-review-section,#import-dialog[data-import-view=image] #image-results{display:contents}#import-dialog[data-import-view=image] #image-summary{grid-area:1/2;margin:0}#import-dialog[data-import-view=image] .image-display-stage{grid-area:2/1;align-self:center}#import-dialog[data-import-view=image] .image-review-board-stage{grid-area:2/2;align-self:center}#import-dialog[data-import-view=image] .image-review-controls{grid-area:2/3;align-self:center}#import-dialog[data-import-view=image] .image-display-tabs{grid-area:1/1;align-self:center;margin:0}}@media (width<=760px){#import-dialog{padding:16px}.import-header h2{font-size:18px}.import-entry-actions{grid-template-columns:1fr;gap:12px}#import-dialog .image-drop{min-height:330px;padding:24px 16px}.import-entry-actions>button,.import-entry-actions>label{min-height:48px;font-size:14px}#image-import-pane{grid-template-columns:minmax(0,1fr);gap:16px}.image-source-section{width:100%;margin:0 auto}#image-results{grid-template-columns:minmax(0,1fr)}.image-review-controls{grid-template-columns:auto 1fr 1fr auto;align-items:center;gap:8px;display:grid}#image-note-buttons,#image-candidate-buttons{width:100%}.image-review-controls>.tool{flex-direction:column;width:36px;font-size:11px}}#share-dialog{width:min(780px,100vw - 32px);max-height:calc(100dvh - 32px);padding:22px;overflow:auto}.share-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;display:flex}.share-heading h2{margin:0}.share-layout{grid-template-columns:minmax(0,1fr) 220px;align-items:center;gap:28px;display:grid}.share-preview-wrap{background:#f4f3ef;border:1px solid #e0e4dc;border-radius:10px;justify-self:center;width:100%;min-width:0;max-width:min(440px,85.7143dvh - 128.571px);overflow:hidden}#share-preview{width:100%;height:auto;display:block}.share-controls{min-width:0}.share-options{border:0;gap:16px;margin:0 0 24px;padding:0;display:grid}.share-options legend{margin-bottom:18px;font-size:14px;font-weight:600}.share-options label{cursor:pointer;align-items:center;gap:10px;display:flex}.share-options input{width:17px;height:17px;accent-color:var(--green);margin:0}.share-buttons{gap:10px;display:grid}.share-buttons button{min-height:42px}#share-status{min-height:24px;color:var(--green);margin-bottom:0}#share-status.error{color:var(--red)}@media (width<=650px){#share-dialog{padding:16px}.share-layout{grid-template-columns:minmax(0,1fr);gap:18px}.share-preview-wrap{width:min(100%,300px);margin:auto}.share-options{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}.share-options legend{margin-bottom:12px}.share-buttons{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.share-buttons button{letter-spacing:0;padding:10px 4px;font-size:12px}}