:root{--color-paper:#fbfaf7;--color-surface:#fff;--color-ink:#20242a;--color-muted:#6e747c;--color-line:#c9cdd2;--color-grid:#20242a;--color-cobalt:#275dad;--color-cobalt-soft:#e4eefb;--color-value-match:#cfe9e5;--color-candidate-match:#eee2f6;--color-green:#2d7d5d;--color-green-soft:#dff2e9;--color-coral:#c94d43;--color-coral-soft:#fbe5e1;--color-gold-soft:#fff1bd;--shadow-raised:0 12px 30px #20242a1a;--radius-small:4px;--radius-medium:8px;--font-display:Charter, Cambria, Georgia, serif;--font-body:Aptos, "Trebuchet MS", sans-serif}*{box-sizing:border-box}html{background:var(--color-paper);color:var(--color-ink);font-family:var(--font-body);font-synthesis:none;text-rendering:optimizelegibility}body{min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--color-cobalt);outline-offset:2px}#root{min-height:100vh}._intro_dyj2n_1{gap:8px;margin-bottom:24px;display:grid}._eyebrow_dyj2n_13{color:var(--color-cobalt);text-transform:uppercase;margin:0;font-size:12px;font-weight:800}._title_dyj2n_29{font-family:var(--font-display);margin:0;font-size:34px;line-height:1.1}._subtitle_dyj2n_43{max-width:560px;color:var(--color-muted);margin:0}._shareForm_dyj2n_55{gap:8px;max-width:360px;margin-top:10px;display:flex}._shareInput_dyj2n_69{border:1px solid var(--color-line);border-radius:var(--radius-small);min-width:0;color:var(--color-ink);background:var(--color-surface);font-variant-numeric:tabular-nums;text-transform:uppercase;flex:1;padding:10px 12px}._openButton_dyj2n_93{border:1px solid var(--color-cobalt);border-radius:var(--radius-small);color:#fff;background:var(--color-cobalt);padding:10px 16px;font-weight:700}._formError_dyj2n_111{color:var(--color-coral);margin:0;font-size:13px}._difficultyPicker_dyj2n_123{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:24px;display:grid}._difficulty_dyj2n_123,._difficultyActive_dyj2n_139{border:1px solid var(--color-line);border-radius:var(--radius-small);min-height:48px;color:var(--color-ink);background:var(--color-surface);text-align:center;padding:12px 10px;font-weight:700;text-decoration:none}._difficultyActive_dyj2n_139{border-color:var(--color-cobalt);color:var(--color-cobalt);background:var(--color-cobalt-soft)}._sectionHeader_dyj2n_175,._pagination_dyj2n_177{justify-content:space-between;align-items:center;gap:16px;display:flex}._sectionHeader_dyj2n_175{margin-bottom:12px}._sectionHeader_dyj2n_175 h2{font-family:var(--font-display);margin:0;font-size:22px}._development_dyj2n_211{color:var(--color-coral);font-size:12px;font-weight:700}._puzzleGrid_dyj2n_223{grid-template-columns:repeat(auto-fill,minmax(58px,1fr));gap:6px;display:grid}._puzzle_dyj2n_223,._puzzleSolved_dyj2n_237,._puzzleProgress_dyj2n_239{border:1px solid var(--color-line);border-radius:var(--radius-small);min-height:58px;color:var(--color-ink);background:var(--color-surface);font-variant-numeric:tabular-nums;grid-template-rows:1fr auto;place-items:center;padding:5px 4px;font-weight:700;text-decoration:none;display:grid}._puzzleSolved_dyj2n_237{border-color:var(--color-green);color:var(--color-green);background:var(--color-green-soft)}._puzzleProgress_dyj2n_239{border-color:var(--color-cobalt);color:var(--color-cobalt);background:var(--color-cobalt-soft)}._pagination_dyj2n_177{margin-top:20px}._pageLink_dyj2n_301,._pageDisabled_dyj2n_303{border:1px solid var(--color-line);border-radius:var(--radius-small);min-width:92px;color:var(--color-ink);background:var(--color-surface);text-align:center;padding:10px 14px;text-decoration:none}._pageDisabled_dyj2n_303{color:var(--color-line)}@media (width>=640px){._difficultyPicker_dyj2n_123{grid-template-columns:repeat(4,minmax(0,1fr))}._title_dyj2n_29{font-size:42px}}._puzzleNumber_dyj2n_353{align-self:center}._puzzleTime_dyj2n_361{color:inherit;opacity:.78;align-self:end;font-size:10px;font-weight:600;line-height:1}._sectionRow_r2d1x_1{justify-content:space-between;align-items:center;gap:12px;display:flex}._gameHeader_r2d1x_15{grid-template-columns:auto auto minmax(0,1fr) auto;align-items:center;gap:12px;margin-bottom:18px;display:grid}._back_r2d1x_31,._iconButton_r2d1x_33,._toolButton_r2d1x_35,._toolButtonActive_r2d1x_37,._digitButton_r2d1x_39,._digitButtonActive_r2d1x_41,._applyButton_r2d1x_43{border:1px solid var(--color-line);border-radius:var(--radius-small);color:var(--color-ink);background:var(--color-surface)}._back_r2d1x_31{color:var(--color-ink);align-items:center;gap:6px;text-decoration:none;display:inline-flex}._identity_r2d1x_73{white-space:nowrap;align-items:baseline;gap:7px;display:flex}._identity_r2d1x_73 h1{font-family:var(--font-display);margin:0;font-size:23px}._identity_r2d1x_73 p{color:var(--color-muted);text-transform:capitalize;margin:0;font-size:12px}._compactCode_r2d1x_113{display:none}._iconButton_r2d1x_33{place-items:center;width:42px;height:42px;padding:0;display:grid}._layout_r2d1x_137{align-items:start;gap:20px;display:grid}._playArea_r2d1x_149{width:min(100%,620px);margin:0 auto}._stats_r2d1x_159{color:var(--color-muted);font-variant-numeric:tabular-nums;justify-content:flex-end;justify-self:end;gap:22px;font-size:13px;display:flex}._timer_r2d1x_179{text-align:center;min-width:5ch;display:inline-block}._board_r2d1x_191{aspect-ratio:1;border:2px solid var(--color-grid);background:var(--color-grid);grid-template-columns:repeat(9,minmax(0,1fr));gap:0;width:100%;display:grid}._cell_r2d1x_211{border:0;border-right:1px solid var(--color-grid);border-bottom:1px solid var(--color-grid);min-width:0;color:var(--color-cobalt);background:var(--color-surface);place-items:center;padding:0;font-size:clamp(18px,6vw,30px);font-weight:650;display:grid;position:relative}._cell_r2d1x_211:nth-child(3n):not(:nth-child(9n)){border-right-width:2px}._cell_r2d1x_211:nth-child(n+19):nth-child(-n+27),._cell_r2d1x_211:nth-child(n+46):nth-child(-n+54){border-bottom-width:2px}._cell_r2d1x_211:nth-child(9n){border-right-width:0}._cell_r2d1x_211:nth-last-child(-n+9){border-bottom-width:0}._given_r2d1x_275{color:var(--color-ink);font-weight:800}._double_r2d1x_285{background:var(--color-cobalt-soft)}._triple_r2d1x_293{background:var(--color-green-soft)}._candidateMatching_r2d1x_301{background:var(--color-candidate-match)}._matching_r2d1x_309{background:var(--color-value-match)}._selected_r2d1x_317{background:var(--color-gold-soft)}._selected_r2d1x_317._matching_r2d1x_309,._selected_r2d1x_317._candidateMatching_r2d1x_301{box-shadow:inset 0 0 0 3px var(--color-cobalt)}._conflict_r2d1x_335,._wrong_r2d1x_337{color:var(--color-coral);background:var(--color-coral-soft)}._hintPremise_r2d1x_347{background:var(--color-green-soft);box-shadow:none}._hintTarget_r2d1x_357{background:var(--color-gold-soft);box-shadow:none}._notes_r2d1x_367{color:var(--color-muted);grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);font-size:clamp(7px,2.4vw,12px);line-height:1;display:grid;position:absolute;inset:3px}._note_r2d1x_367,._noteMatching_r2d1x_391{place-items:center;display:grid}._noteMatching_r2d1x_391{color:var(--color-cobalt);font-weight:800}._hintNoteElimination_r2d1x_411{color:var(--color-coral);place-items:center;font-weight:900;text-decoration:line-through;text-decoration-thickness:2px;display:grid}._numberPad_r2d1x_429{grid-template-columns:repeat(9,1fr);gap:4px;margin-top:12px;display:grid}._digitButton_r2d1x_39,._digitButtonActive_r2d1x_41{min-width:0;min-height:56px;color:var(--color-cobalt);grid-template-rows:1fr auto;place-items:center;padding:5px 0 4px;font-weight:800;display:grid}._digitValue_r2d1x_467{font-size:20px;line-height:1}._digitRemaining_r2d1x_477{color:var(--color-muted);white-space:nowrap;font-size:9px;font-weight:600;line-height:1}._digitButtonActive_r2d1x_41{border-color:var(--color-cobalt);color:#fff;background:var(--color-cobalt)}._toolbars_r2d1x_505{gap:8px;margin-top:10px;display:grid}._toolbar_r2d1x_505,._historyToolbar_r2d1x_519,._noteToolbar_r2d1x_521{gap:6px;display:grid}._toolbar_r2d1x_505{grid-template-columns:repeat(4,minmax(0,1fr))}._historyToolbar_r2d1x_519,._noteToolbar_r2d1x_521{grid-template-columns:repeat(2,minmax(0,1fr))}._historyToolbar_r2d1x_519{grid-template-columns:repeat(3,minmax(0,1fr))}._noteToolbar_r2d1x_521{margin-top:6px}._toolButton_r2d1x_35,._toolButtonActive_r2d1x_37{place-items:center;gap:2px;min-height:50px;padding:5px;font-size:10px;display:grid}._toolButtonActive_r2d1x_37{border-color:var(--color-cobalt);color:var(--color-cobalt);background:var(--color-cobalt-soft)}._toolButton_r2d1x_35:disabled{opacity:.35}._hintPanel_r2d1x_605,._completePanel_r2d1x_607{border:1px solid var(--color-line);border-radius:var(--radius-medium);background:var(--color-surface);box-shadow:var(--shadow-raised);margin-top:12px;padding:18px}._hintPanel_r2d1x_605 h2,._completePanel_r2d1x_607 h1,._completePanel_r2d1x_607 h2{font-family:var(--font-display);margin:0 0 8px;font-size:22px}._hintPanel_r2d1x_605 p,._completePanel_r2d1x_607 p{color:var(--color-muted)}._hintActions_r2d1x_651{gap:8px;margin-top:14px;display:flex}._applyButton_r2d1x_43{border-color:var(--color-green);color:#fff;background:var(--color-green);padding:10px 16px;font-weight:800}._dialogBackdrop_r2d1x_679{z-index:20;background:#20242a73;place-items:center;padding:20px;display:grid;position:fixed;inset:0}._confirmationDialog_r2d1x_699{border:1px solid var(--color-line);border-radius:var(--radius-medium);background:var(--color-surface);width:min(100%,420px);box-shadow:var(--shadow-raised);padding:22px}._confirmationDialog_r2d1x_699 h2{font-family:var(--font-display);margin:0 0 8px;font-size:24px}._confirmationDialog_r2d1x_699 p{color:var(--color-muted);margin:0;line-height:1.5}._dialogActions_r2d1x_741{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}._dialogActions_r2d1x_741 ._toolButton_r2d1x_35,._resetButton_r2d1x_757{min-height:42px;padding:8px 14px}._resetButton_r2d1x_757{border:1px solid var(--color-coral);border-radius:var(--radius-small);color:#fff;background:var(--color-coral);font-weight:800}@media (width>=900px){._layout_r2d1x_137{grid-template-columns:minmax(0,620px) minmax(250px,1fr)}._toolbars_r2d1x_505{margin-top:18px}}._digitButtonActive_r2d1x_41 ._digitRemaining_r2d1x_477{color:#fff;opacity:.82}@media (width<=560px){._gameHeader_r2d1x_15{gap:6px;min-height:38px;margin-bottom:4px}._back_r2d1x_31{gap:2px;font-size:13px}._identity_r2d1x_73 h1{font-size:20px}._fullCode_r2d1x_845{display:none}._compactCode_r2d1x_113{display:inline}._identity_r2d1x_73 p{margin-top:0;font-size:10px}._iconButton_r2d1x_33{width:38px;height:38px}._layout_r2d1x_137{gap:8px}._stats_r2d1x_159{gap:8px;font-size:10px}._numberPad_r2d1x_429{gap:3px;margin-top:5px}._digitButton_r2d1x_39,._digitButtonActive_r2d1x_41{min-height:48px;padding-block:3px}._digitValue_r2d1x_467{font-size:18px}._digitRemaining_r2d1x_477{font-size:8px}._noteToolbar_r2d1x_521{margin-top:4px}._noteToolbar_r2d1x_521 ._toolButton_r2d1x_35,._noteToolbar_r2d1x_521 ._toolButtonActive_r2d1x_37{min-height:44px}._toolbars_r2d1x_505{margin-top:0}}@media (width<=360px){._identity_r2d1x_73 p,._statLabel_r2d1x_969{display:none}}._page_uar0e_1,._detail_uar0e_3{max-width:820px;margin:0 auto}._intro_uar0e_13{margin-bottom:36px}._intro_uar0e_13 h1,._detailHeader_uar0e_23 h1{font-family:var(--font-display);margin:4px 0 8px;font-size:clamp(34px,7vw,52px);line-height:1}._intro_uar0e_13 p,._detailHeader_uar0e_23 p,._explanation_uar0e_41 p,._example_uar0e_43 p,._remember_uar0e_45 p{color:var(--color-muted);line-height:1.55}._source_uar0e_55{color:var(--color-muted);margin-top:24px;font-size:13px}._source_uar0e_55 a{color:var(--color-cobalt)}._eyebrow_uar0e_75{color:var(--color-cobalt);text-transform:uppercase;margin:0;font-size:12px;font-weight:800}._section_uar0e_91{margin-top:38px}._section_uar0e_91 h2,._explanation_uar0e_41 h2,._example_uar0e_43 h2,._remember_uar0e_45 h2{font-family:var(--font-display);margin:0 0 14px;font-size:24px}._lessonList_uar0e_117{gap:8px;display:grid}._lesson_uar0e_117{border:1px solid var(--color-line);border-radius:var(--radius-medium);min-height:78px;color:var(--color-ink);background:var(--color-surface);grid-template-columns:52px minmax(0,1fr) auto;align-items:center;gap:14px;padding:12px 14px;text-decoration:none;display:grid}._number_uar0e_155{border-radius:var(--radius-medium);width:48px;height:48px;color:var(--color-cobalt);background:var(--color-cobalt-soft);font-variant-numeric:tabular-nums;place-items:center;font-size:16px;font-weight:800;display:grid}._lessonText_uar0e_181{gap:3px;display:grid}._lessonText_uar0e_181 strong{font-size:17px}._lessonText_uar0e_181 small{color:var(--color-muted);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}._back_uar0e_215{color:var(--color-ink);align-items:center;gap:6px;margin-bottom:24px;text-decoration:none;display:inline-flex}._detailHeader_uar0e_23{border-bottom:2px solid var(--color-ink);grid-template-columns:58px minmax(0,1fr);align-items:start;gap:18px;padding-bottom:28px;display:grid}._explanation_uar0e_41,._example_uar0e_43,._remember_uar0e_45{border:1px solid var(--color-line);background:var(--color-surface);margin-top:28px;padding:22px}._example_uar0e_43{border-left:4px solid var(--color-cobalt)}._remember_uar0e_45{border-left:4px solid var(--color-green)}._explanation_uar0e_41 p,._example_uar0e_43 p,._remember_uar0e_45 p{margin:0}._exampleFigure_uar0e_297{grid-template-columns:minmax(300px,1fr) minmax(190px,.55fr);align-items:start;gap:22px;margin:22px 0 0;display:grid}._lessonBoard_uar0e_313{aspect-ratio:1;border:2px solid var(--color-grid);background:var(--color-grid);grid-template-columns:repeat(9,minmax(0,1fr));width:100%;display:grid;position:relative}._lessonCell_uar0e_333{border:0;border-right:1px solid var(--color-grid);border-bottom:1px solid var(--color-grid);background:var(--color-surface);place-items:center;min-width:0;display:grid;position:relative}._lessonCell_uar0e_333:nth-child(3n):not(:nth-child(9n)){border-right-width:2px}._lessonCell_uar0e_333:nth-child(n+19):nth-child(-n+27),._lessonCell_uar0e_333:nth-child(n+46):nth-child(-n+54){border-bottom-width:2px}._lessonCell_uar0e_333:nth-child(9n){border-right-width:0}._lessonCell_uar0e_333:nth-child(n+73):nth-child(-n+81){border-bottom-width:0}._lessonPremise_uar0e_389{background:var(--color-green-soft)}._lessonSupport_uar0e_397{background:var(--color-cobalt-soft)}._lessonGroupA_uar0e_405{background:var(--color-cobalt-match)}._lessonGroupB_uar0e_413{background:var(--color-green-soft)}._lessonResult_uar0e_421{z-index:1;background:var(--color-gold-soft);box-shadow:inset 0 0 0 2px var(--color-coral)}._lessonCoordinate_uar0e_433,._lessonCellLabel_uar0e_435{z-index:3;color:var(--color-muted);font-size:6px;font-weight:700;line-height:1;position:absolute}._lessonCoordinate_uar0e_433{top:2px;left:2px}._lessonCellLabel_uar0e_435{max-width:calc(100% - 4px);color:var(--color-ink);text-overflow:ellipsis;text-transform:uppercase;white-space:nowrap;bottom:2px;right:2px;overflow:hidden}._lessonValue_uar0e_485{z-index:3;color:var(--color-cobalt);font-size:24px;position:relative}._lessonCandidates_uar0e_499{z-index:3;color:var(--color-muted);grid-template-rows:repeat(3,minmax(0,1fr));grid-template-columns:repeat(3,minmax(0,1fr));font-size:9px;line-height:1;display:grid;position:absolute;inset:8px 2px 6px}._lessonCandidate_uar0e_499,._lessonCandidateEmphasized_uar0e_525,._lessonCandidateEliminated_uar0e_527{place-items:center;display:grid}._lessonCandidateEmphasized_uar0e_525{color:var(--color-cobalt);font-weight:900}._lessonCandidateEliminated_uar0e_527{color:var(--color-coral);font-weight:900;text-decoration:line-through;text-decoration-thickness:2px}._lessonLinks_uar0e_561{z-index:2;pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}._lessonStrongLink_uar0e_581,._lessonWeakLink_uar0e_583,._lessonImplicationLink_uar0e_585{fill:none;stroke-linecap:round;stroke-width:9px;opacity:.72}._lessonStrongLink_uar0e_581{stroke:var(--color-cobalt)}._lessonWeakLink_uar0e_583{stroke:var(--color-coral);stroke-dasharray:18 14}._lessonImplicationLink_uar0e_585{stroke:var(--color-green);stroke-dasharray:4 13}._lessonArrow_uar0e_627{fill:var(--color-green)}._lessonLinkDigit_uar0e_635{fill:var(--color-ink);stroke:var(--color-surface);stroke-width:6px;paint-order:stroke;text-anchor:middle;font-size:28px;font-weight:900}._exampleCaption_uar0e_655{gap:10px;display:grid}._exampleCaption_uar0e_655 h3{font-family:var(--font-display);margin:0;font-size:21px}._exampleCaption_uar0e_655 p{font-size:13px}._conclusion_uar0e_685{border-left:3px solid var(--color-coral);padding-left:10px;font-weight:700;color:var(--color-ink)!important}._diagramLegend_uar0e_699{border-top:1px solid var(--color-line);color:var(--color-muted);grid-template-columns:1fr 1fr;gap:8px 10px;margin:4px 0 0;padding:12px 0 0;font-size:11px;list-style:none;display:grid}._diagramLegend_uar0e_699 li{align-items:center;gap:6px;display:flex}._legendPremise_uar0e_735,._legendGroup_uar0e_737,._legendResult_uar0e_739,._legendElimination_uar0e_741,._legendStrong_uar0e_743,._legendWeak_uar0e_745,._legendImplication_uar0e_747{border:1px solid var(--color-line);flex:none;width:13px;height:13px}._legendPremise_uar0e_735{background:var(--color-green-soft)}._legendGroup_uar0e_737{background:var(--color-cobalt-match)}._legendResult_uar0e_739{border-color:var(--color-coral);background:var(--color-gold-soft)}._legendElimination_uar0e_741{border:0;position:relative}._legendElimination_uar0e_741:after{border-top:2px solid var(--color-coral);content:"";width:14px;position:absolute;top:5px;left:0;transform:rotate(-35deg)}._legendStrong_uar0e_743,._legendWeak_uar0e_745,._legendImplication_uar0e_747{border:0;position:relative}._legendStrong_uar0e_743:after,._legendWeak_uar0e_745:after,._legendImplication_uar0e_747:after{border-top:2px solid var(--color-cobalt);content:"";width:14px;position:absolute;top:6px;left:0}._legendWeak_uar0e_745:after{border-color:var(--color-coral);border-top-style:dashed}._legendImplication_uar0e_747:after{border-color:var(--color-green);border-top-style:dotted}@media (width<=520px){._lesson_uar0e_117{grid-template-columns:44px minmax(0,1fr) auto;padding-inline:10px}._number_uar0e_155{width:40px;height:40px}._lessonText_uar0e_181 small{white-space:normal}._detailHeader_uar0e_23{grid-template-columns:44px minmax(0,1fr)}._explanation_uar0e_41,._example_uar0e_43,._remember_uar0e_45{padding:16px}._exampleFigure_uar0e_297{grid-template-columns:1fr}._lessonCandidates_uar0e_499{font-size:6px;inset:7px 1px 5px}._lessonCoordinate_uar0e_433,._lessonCellLabel_uar0e_435{font-size:5px}._lessonValue_uar0e_485{font-size:19px}}._app_b25hd_1{background:linear-gradient(#275dad0a 1px, transparent 1px), var(--color-paper);background-size:100% 32px;min-height:100vh}._header_b25hd_13{border-bottom:2px solid var(--color-ink);justify-content:space-between;align-items:baseline;gap:16px;max-width:1120px;margin:0 auto;padding:20px;display:flex}._brand_b25hd_35{color:var(--color-ink);font-family:var(--font-display);font-size:26px;font-weight:700;text-decoration:none}._tagline_b25hd_51{color:var(--color-muted);font-size:13px}._main_b25hd_61{width:min(100%,1120px);margin:0 auto;padding:24px 16px 48px}@media (width>=720px){._main_b25hd_61{padding:40px 24px 64px}}._primaryNav_b25hd_85{gap:14px;display:flex}._primaryNav_b25hd_85 a{color:var(--color-ink);font-size:14px;font-weight:700;text-decoration:none}@media (width<=560px){._tagline_b25hd_51{display:none}._app_b25hd_1:has([data-game-page])>._header_b25hd_13{display:none}._main_b25hd_61:has([data-game-page]){padding:8px 8px 28px}}