: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_19ye1_1{gap:8px;margin-bottom:24px;display:grid}._eyebrow_19ye1_7{color:var(--color-cobalt);text-transform:uppercase;margin:0;font-size:12px;font-weight:800}._title_19ye1_15{font-family:var(--font-display);margin:0;font-size:34px;line-height:1.1}._subtitle_19ye1_22{max-width:560px;color:var(--color-muted);margin:0}._difficultyPicker_19ye1_28{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:24px;display:grid}._difficulty_19ye1_28,._difficultyActive_19ye1_36{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 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(width>=640px){._difficultyPicker_19ye1_28{grid-template-columns:repeat(4,minmax(0,1fr))}._title_19ye1_15{font-size:42px}}._backdrop_z2auu_1{z-index:100;background:#20242a7a;place-items:center;padding:16px;display:grid;position:fixed;inset:0}._dialog_z2auu_11{border:2px solid var(--color-ink);border-radius:var(--radius-medium);background:var(--color-surface);width:min(100%,520px);box-shadow:var(--shadow-raised);padding:20px}._header_z2auu_20{justify-content:space-between;align-items:start;gap:16px;display:flex}._header_z2auu_20 h2{font-family:var(--font-display);margin:2px 0 0;font-size:25px}._eyebrow_z2auu_33{color:var(--color-cobalt);text-transform:uppercase;margin:0;font-size:11px;font-weight:800}._iconButton_z2auu_41{border:1px solid var(--color-line);border-radius:var(--radius-small);width:40px;height:40px;color:var(--color-ink);background:var(--color-surface);flex:none;place-items:center;padding:0;display:grid}._fieldset_z2auu_54{border:0;margin:20px 0 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var(--color-line);color:var(--color-ink);background:var(--color-surface)}._error_z2auu_121{color:var(--color-coral);margin:14px 0 0;font-size:13px}._progress_z2auu_127{text-align:center;align-content:center;place-items:center;gap:10px;min-height:250px;display:grid}._progress_z2auu_127 p{margin:4px 0 0;font-weight:800}._progress_z2auu_127 span{color:var(--color-muted);font-variant-numeric:tabular-nums;margin-bottom:14px;font-size:13px}._spinner_z2auu_148{color:var(--color-cobalt);animation:.9s linear infinite _spin_z2auu_148}@keyframes _spin_z2auu_148{to{transform:rotate(360deg)}}@media (width>=520px){._difficultyGrid_z2auu_67{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (prefers-reduced-motion:reduce){._spinner_z2auu_148{animation-duration:1.8s}}._intro_mddyt_1{gap:8px;margin-bottom:24px;display:grid}._intro_mddyt_1 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._cell_1kxqd_120{font-size:clamp(15px,4.5vw,22px)}html[data-placed-number-size=medium] ._cell_1kxqd_120{font-size:clamp(17px,5.3vw,26px)}html[data-placed-number-size=default] ._cell_1kxqd_120{font-size:clamp(18px,6vw,30px)}html[data-placed-number-size=large] ._cell_1kxqd_120{font-size:clamp(21px,7vw,34px)}html[data-placed-number-size=extra-large] ._cell_1kxqd_120{font-size:clamp(24px,8vw,38px)}._cell_1kxqd_120:nth-child(3n):not(:nth-child(9n)){border-right-width:2px}._cell_1kxqd_120:nth-child(n+19):nth-child(-n+27),._cell_1kxqd_120:nth-child(n+46):nth-child(-n+54){border-bottom-width:2px}._cell_1kxqd_120:nth-child(9n){border-right-width:0}._cell_1kxqd_120:nth-child(n+73):nth-child(-n+81){border-bottom-width:0}._boardComplete_1kxqd_174{animation:2.8s ease-in-out infinite _completionBoardGlow_1kxqd_1}._boardComplete_1kxqd_174 ._cell_1kxqd_120{animation:2.8s ease-in-out infinite both _completionCellWave_1kxqd_1}@keyframes 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var(--color-cobalt)}._conflict_1kxqd_299,._wrong_1kxqd_300{color:var(--color-coral);background:var(--color-coral-soft)}._hintPremise_1kxqd_305{background:var(--color-green-soft);box-shadow:none}._hintTarget_1kxqd_310{background:var(--color-gold-soft);box-shadow:none}._hintPivot_1kxqd_315{color:var(--color-cobalt);background:var(--color-cobalt-soft);box-shadow:inset 0 0 0 3px var(--color-cobalt)}._notes_1kxqd_321{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}html[data-candidate-size=small] ._notes_1kxqd_321{font-size:clamp(6px,1.8vw,9px)}html[data-candidate-size=medium] ._notes_1kxqd_321{font-size:clamp(6.5px,2.1vw,10.5px)}html[data-candidate-size=default] ._notes_1kxqd_321{font-size:clamp(7px,2.4vw,12px)}html[data-candidate-size=large] ._notes_1kxqd_321{font-size:clamp(8px,2.7vw,13px)}html[data-candidate-size=extra-large] 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var(--color-cobalt);background:var(--color-cobalt-soft);padding:12px}._hintInsightHeader_1kxqd_850{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 12px;display:flex}._hintInsightHeader_1kxqd_850 h3{margin:0;font-size:15px}._hintLessonLink_1kxqd_863{color:var(--color-cobalt);text-transform:capitalize;font-size:11px;font-weight:700;text-decoration:none}._hintPanel_1kxqd_578 ._hintInsightSummary_1kxqd_871{color:var(--color-ink);margin:8px 0 0;font-weight:700}._hintPanel_1kxqd_578 ._hintInsight_1kxqd_844>p{margin-block:8px 0;font-size:13px}._hintPanel_1kxqd_578 ._uniquenessNote_1kxqd_882{color:var(--color-coral);font-weight:700}._hintEvidence_1kxqd_887{color:var(--color-ink);gap:6px;margin:10px 0 0;padding-left:18px;font-size:12px;display:grid}._hintEvidence_1kxqd_887 li{overflow-wrap:anywhere;padding-left:2px}@media (prefers-reduced-motion:reduce){._boardComplete_1kxqd_174,._boardComplete_1kxqd_174 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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}}._settingsPage_11hd3_1{width:min(100%,720px);margin:0 auto}._intro_11hd3_11{margin-bottom:28px}._intro_11hd3_11 p{color:var(--color-cobalt);text-transform:uppercase;margin:0 0 6px;font-size:12px;font-weight:800}._intro_11hd3_11 h1{font-family:var(--font-display);margin:0;font-size:40px}._group_11hd3_47{border-top:2px solid var(--color-ink)}._group_11hd3_47+._group_11hd3_47{margin-top:30px}._group_11hd3_47 h2{font-family:var(--font-display);margin:0;padding:14px 0 9px;font-size:18px}._setting_11hd3_1{border-top:1px solid var(--color-line);min-height:58px;color:var(--color-ink);justify-content:space-between;align-items:center;gap:20px;padding:10px 0;font-weight:700;display:flex}._setting_11hd3_1:last-child{border-bottom:1px solid var(--color-line)}._toggle_11hd3_109{appearance:none;border:1px solid var(--color-line);cursor:pointer;background:#e5e7e9;border-radius:13px;flex:none;width:46px;height:26px;margin:0;position:relative}._toggle_11hd3_109:after{background:var(--color-surface);content:"";border-radius:50%;width:18px;height:18px;transition:transform .14s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #20242a40}._toggle_11hd3_109:checked{border-color:var(--color-cobalt);background:var(--color-cobalt)}._toggle_11hd3_109:checked:after{transform:translate(20px)}._sizeSetting_11hd3_179{border:0;border-top:1px solid var(--color-line);margin:0;padding:14px 0 16px}._sizeSetting_11hd3_179:last-child{border-bottom:1px solid var(--color-line)}._sizeSetting_11hd3_179 legend{margin-bottom:10px;padding:0;font-weight:700}._sizeOptions_11hd3_213{grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;display:grid}._sizeOption_11hd3_213,._sizeActive_11hd3_227{border:1px solid var(--color-line);border-radius:var(--radius-small);min-width:0;min-height:44px;color:var(--color-ink);background:var(--color-surface);padding:6px 4px;font-size:10px;font-weight:700}._sizeActive_11hd3_227{border-color:var(--color-cobalt);color:var(--color-cobalt);background:var(--color-cobalt-soft)}@media (prefers-reduced-motion:reduce){._toggle_11hd3_109:after{transition:none}}._app_7415u_1{background:linear-gradient(#275dad0a 1px, transparent 1px), var(--color-paper);background-size:100% 32px;min-height:100vh}._header_7415u_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_7415u_35{color:var(--color-ink);font-family:var(--font-display);font-size:26px;font-weight:700;text-decoration:none}._tagline_7415u_51{color:var(--color-muted);font-size:13px}._main_7415u_61{width:min(100%,1120px);margin:0 auto;padding:24px 16px 48px}@media (width>=720px){._main_7415u_61{padding:40px 24px 64px}}._primaryNav_7415u_85{align-items:center;gap:14px;display:flex}._primaryNav_7415u_85 a{color:var(--color-ink);font-size:14px;font-weight:700;text-decoration:none}@media (width<=560px){._tagline_7415u_51{display:none}._app_7415u_1:has([data-game-page])>._header_7415u_13{display:none}._main_7415u_61:has([data-game-page]){padding:8px 8px 28px}}@media (width<=360px){._header_7415u_13{flex-wrap:wrap;padding:14px 16px}._brand_7415u_35{white-space:nowrap}._primaryNav_7415u_85{justify-content:space-between;gap:8px;width:100%}}._primaryNav_7415u_85 ._settingsLink_7415u_173{border:1px solid var(--color-line);border-radius:var(--radius-small);place-items:center;width:30px;height:30px;display:grid}