.ParallelogramLessonFlow_shell__9pjNr{height:100dvh;min-height:680px;display:flex;flex-direction:column;overflow:hidden;background:var(--bg);color:var(--ink)}.ParallelogramLessonFlow_topbar__z9jzY{flex:none;height:55px;padding:0 24px;display:flex;align-items:center;gap:20px;background:var(--surface);border-bottom:1px solid var(--line);z-index:20}.ParallelogramLessonFlow_exit__LvxxZ{font-size:13.5px;color:var(--ink-2);text-decoration:none;white-space:nowrap}.ParallelogramLessonFlow_exit__LvxxZ span{font-family:var(--font-gloss);font-size:11px;color:var(--ink-3)}.ParallelogramLessonFlow_beats___cJPU{flex:1 1;display:flex;align-items:center;justify-content:center;gap:4px}.ParallelogramLessonFlow_beatCurrent__htUcS,.ParallelogramLessonFlow_beatDone__RQf4Z,.ParallelogramLessonFlow_beat__0sfnz{padding:4px 7px 5px;border:0;border-bottom:2px solid var(--line);background:none;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.04em;color:var(--ink-4);white-space:nowrap}.ParallelogramLessonFlow_beatCurrent__htUcS span,.ParallelogramLessonFlow_beatDone__RQf4Z span,.ParallelogramLessonFlow_beat__0sfnz span{margin-left:4px;font-family:var(--font-gloss);font-size:9.5px;letter-spacing:0}.ParallelogramLessonFlow_beatDone__RQf4Z{color:var(--ink-2);border-bottom-color:var(--accent);cursor:pointer}.ParallelogramLessonFlow_beatCurrent__htUcS{color:var(--ink);border-bottom-color:var(--ink);cursor:pointer}.ParallelogramLessonFlow_topRight__PowNe{display:flex;align-items:center;gap:12px}.ParallelogramLessonFlow_theorem__frzq8{font-family:var(--font-mono);font-size:11.5px;color:var(--ink-3);white-space:nowrap}.ParallelogramLessonFlow_workspace__W_7hS{flex:1 1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,384px)}.ParallelogramLessonFlow_stage__kX7NA{position:relative;min-width:0;min-height:0;overflow:hidden;background:var(--well);border-right:1px solid var(--line)}.ParallelogramLessonFlow_stageLabel__ZkbrT{position:absolute;top:16px;left:18px;z-index:3;pointer-events:none}.ParallelogramLessonFlow_stageLabel__ZkbrT span{display:block;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--ink-3)}.ParallelogramLessonFlow_stageLabel__ZkbrT em{display:block;margin-top:3px;font-family:var(--font-gloss);font-size:12px;font-style:normal;color:var(--ink-4)}.ParallelogramLessonFlow_figure__XPhf3{width:100%;height:100%;display:block;touch-action:none}.ParallelogramLessonFlow_figure__XPhf3 text{fill:var(--ink);font-family:var(--font-serif);font-size:16px;font-style:italic;text-anchor:middle}.ParallelogramLessonFlow_figure__XPhf3 .ParallelogramLessonFlow_liveReadout__HCAvO{fill:var(--ink-2);font-size:15px}.ParallelogramLessonFlow_figure__XPhf3 .ParallelogramLessonFlow_result__SyJhl{fill:var(--accent);font-size:25px;font-style:normal}.ParallelogramLessonFlow_dragPoint__KGm1o{cursor:ew-resize;filter:drop-shadow(0 0 0 var(--accent))}.ParallelogramLessonFlow_dragHint__JXBdb{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);padding:7px 16px;border:1px solid var(--card-border);border-radius:20px;background:var(--surface);font-size:12px;color:var(--ink-3);pointer-events:none;white-space:nowrap}.ParallelogramLessonFlow_panel__RBuxj{min-width:0;min-height:0;overflow-y:auto;display:flex;flex-direction:column;padding:22px 46px 18px 24px;background:var(--surface)}.ParallelogramLessonFlow_beatTag__5tePj{margin-bottom:8px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.17em;color:var(--accent)}.ParallelogramLessonFlow_panel__RBuxj h1{margin:0 0 10px;font-size:23px;line-height:1.24}.ParallelogramLessonFlow_panel__RBuxj h1 span span:last-child{display:block;margin-top:4px;font-size:13px;font-weight:400}.ParallelogramLessonFlow_prose___sGrV{margin:0 0 18px;font-size:13px;line-height:1.58;color:var(--ink-2)}.ParallelogramLessonFlow_prose___sGrV span span:last-child{display:block;margin-top:3px}.ParallelogramLessonFlow_panelInteraction__mHypg{flex:0 0 auto;min-height:auto}.ParallelogramLessonFlow_formStack__Rs69x{display:flex;flex-direction:column;gap:10px}.ParallelogramLessonFlow_formStack__Rs69x label,.ParallelogramLessonFlow_progressLabel__m9Ln9{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.13em;color:var(--ink-3)}.ParallelogramLessonFlow_inputRow__liO0y{display:flex;align-items:center;gap:10px}.ParallelogramLessonFlow_inputRow__liO0y input{min-width:0;flex:1 1;padding:11px 13px;border:1px solid var(--chip-border);border-radius:3px;background:var(--surface);color:var(--ink);font-family:var(--font-serif);font-size:20px}.ParallelogramLessonFlow_inputRow__liO0y span{font-family:var(--font-serif);font-style:italic;font-size:12px;line-height:1.35;color:var(--ink-3)}.ParallelogramLessonFlow_commit__Akmpe,.ParallelogramLessonFlow_next__rU6ng{width:100%;min-height:44px;padding:11px 16px;border:1px solid var(--ink);border-radius:3px;background:var(--ink);color:var(--on-ink);font-weight:500;cursor:pointer}.ParallelogramLessonFlow_commit__Akmpe:hover,.ParallelogramLessonFlow_next__rU6ng:hover{background:var(--accent);border-color:var(--accent)}.ParallelogramLessonFlow_commit__Akmpe:disabled{opacity:.32;cursor:default}.ParallelogramLessonFlow_payoff__weSf8{animation:ParallelogramLessonFlow_ahaIn__Uv57O .5s both}.ParallelogramLessonFlow_payoff__weSf8 strong{font-family:var(--font-serif);font-size:17px;line-height:1.45}.ParallelogramLessonFlow_payoff__weSf8 p{margin:7px 0 0;font-size:13px;line-height:1.55;color:var(--ink-2)}.ParallelogramLessonFlow_payoff__weSf8 a{text-decoration:none}.ParallelogramLessonFlow_honest__1KG62{color:var(--warn)!important}.ParallelogramLessonFlow_logHead__xa_O6{display:flex;justify-content:space-between;align-items:center;margin-bottom:9px}.ParallelogramLessonFlow_logHead__xa_O6 span{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.13em;color:var(--ink-3)}.ParallelogramLessonFlow_logHead__xa_O6 button,.ParallelogramLessonFlow_secondaryAction__NvbUY{min-height:36px;padding:7px 13px;border:1px solid var(--chip-border);border-radius:3px;background:var(--surface);color:var(--ink);cursor:pointer;font-size:12.5px}.ParallelogramLessonFlow_logHead__xa_O6 button:hover,.ParallelogramLessonFlow_secondaryAction__NvbUY:hover{border-color:var(--ink)}.ParallelogramLessonFlow_logRowHead__tYbO1,.ParallelogramLessonFlow_logRow__3SqbR{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:6px;gap:6px;padding:6px 0;border-bottom:1px solid var(--line-inner)}.ParallelogramLessonFlow_logRowHead__tYbO1{font-family:var(--font-mono);font-size:10px;color:var(--ink-3)}.ParallelogramLessonFlow_logRow__3SqbR{font-family:var(--font-serif);font-size:13px}.ParallelogramLessonFlow_logRow__3SqbR span:nth-child(2),.ParallelogramLessonFlow_logRow__3SqbR span:nth-child(3){color:var(--warn)}.ParallelogramLessonFlow_logRow__3SqbR strong{color:var(--good)}.ParallelogramLessonFlow_lockHint__PN0P9,.ParallelogramLessonFlow_quietHint__dqtE_{display:block;margin:10px 0;font-size:12px;line-height:1.5;font-style:italic;color:var(--ink-4);text-align:center}.ParallelogramLessonFlow_choiceRow__TK_DN{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}.ParallelogramLessonFlow_choiceActive__EPHYw,.ParallelogramLessonFlow_choice__O23jp{min-height:36px;padding:7px 10px;border:1px solid var(--chip-border);border-radius:3px;background:var(--surface);color:var(--ink);cursor:pointer;font-size:12px}.ParallelogramLessonFlow_choiceActive__EPHYw{border-color:var(--ink);background:var(--ink);color:var(--on-ink)}.ParallelogramLessonFlow_choiceActive__EPHYw span span:last-child,.ParallelogramLessonFlow_choice__O23jp span span:last-child{display:block;color:inherit;font-size:9px}.ParallelogramLessonFlow_goodMessage__jtJFs,.ParallelogramLessonFlow_warnMessage__th9Yb{margin:12px 0 0;font-family:var(--font-serif);font-size:13.5px;line-height:1.55;color:var(--good)}.ParallelogramLessonFlow_warnMessage__th9Yb{color:var(--warn)}.ParallelogramLessonFlow_proofSteps__t1_6o{border-top:1px solid var(--line-inner)}.ParallelogramLessonFlow_proofStepFuture__nlJgt,.ParallelogramLessonFlow_proofStep__4A7UW{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid var(--line-inner);font-family:var(--font-serif);font-size:13px}.ParallelogramLessonFlow_proofStepFuture__nlJgt{opacity:.35}.ParallelogramLessonFlow_proofStepFuture__nlJgt p,.ParallelogramLessonFlow_proofStep__4A7UW p{margin:0;line-height:1.45}.ParallelogramLessonFlow_proofStepFuture__nlJgt p span span:last-child,.ParallelogramLessonFlow_proofStep__4A7UW p span span:last-child{display:block}.ParallelogramLessonFlow_proofStep__4A7UW b{color:var(--good)}.ParallelogramLessonFlow_reason__OwpUk{margin-top:14px;display:flex;flex-direction:column;gap:8px}.ParallelogramLessonFlow_reason__OwpUk>strong{font-size:13px;color:var(--ink-2)}.ParallelogramLessonFlow_reason__OwpUk>strong span span:last-child{display:block}.ParallelogramLessonFlow_reason__OwpUk>button{min-height:44px;padding:10px 13px;text-align:left;border:1px solid var(--chip-border);border-radius:3px;background:var(--surface);color:var(--ink);cursor:pointer;font-family:var(--font-serif);font-size:13px;line-height:1.42}.ParallelogramLessonFlow_reason__OwpUk>button:hover{border-color:var(--accent)}.ParallelogramLessonFlow_reason__OwpUk>button span span:last-child{display:block}.ParallelogramLessonFlow_question__QWsx7{margin:9px 0 14px;font-size:17px;line-height:1.4}.ParallelogramLessonFlow_question__QWsx7 span span:last-child{display:block;margin-top:3px}.ParallelogramLessonFlow_goodText__BOCIh{color:var(--good)}.ParallelogramLessonFlow_warnText__lORSY{color:var(--warn)}.ParallelogramLessonFlow_mentor__7ehNK{flex:none;margin:auto 0 0;padding-top:22px;font-family:var(--font-serif);font-style:italic;font-size:15px;line-height:1.5;color:var(--accent);transform:rotate(-.4deg)}.ParallelogramLessonFlow_mentor__7ehNK span span:last-child{display:block;margin-top:2px}.ParallelogramLessonFlow_mentor__7ehNK small{font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;color:var(--ink-4);font-style:normal}.ParallelogramLessonFlow_navigation__sPNpn{flex:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--card-border);display:flex;flex-direction:column;gap:8px}.ParallelogramLessonFlow_previous__EZZUP{border:0;background:none;color:var(--ink-3);cursor:pointer;font-size:12px}.ParallelogramLessonFlow_previous__EZZUP:hover{color:var(--ink)}.ParallelogramLessonFlow_probeTabs__j4SRb{position:absolute;z-index:4;top:53px;left:18px;display:flex;gap:6px}.ParallelogramLessonFlow_probeTabActive___bG3K,.ParallelogramLessonFlow_probeTab__EvrBw{min-height:36px;padding:7px 11px;border:1px solid var(--chip-border);border-radius:3px;background:var(--surface);color:var(--ink-2);font-family:var(--font-mono);font-size:10px;cursor:pointer}.ParallelogramLessonFlow_probeTabActive___bG3K span,.ParallelogramLessonFlow_probeTab__EvrBw span{margin-left:4px;font-family:var(--font-gloss);font-size:9px}.ParallelogramLessonFlow_probeTabActive___bG3K{background:var(--ink);border-color:var(--ink);color:var(--on-ink)}.ParallelogramLessonFlow_mapStage__fGX6J{position:absolute;inset:0;justify-content:center;padding:72px 24px 24px;overflow-y:auto;animation:ParallelogramLessonFlow_riseIn__Y1_GC .45s both}.ParallelogramLessonFlow_mapBranch__2A231,.ParallelogramLessonFlow_mapStage__fGX6J{display:flex;flex-direction:column;align-items:center}.ParallelogramLessonFlow_mapNode__Th8dj{min-width:420px;padding:11px 24px;border:1.5px solid var(--chip-border);border-radius:4px;background:var(--surface);color:var(--ink);font-family:var(--font-serif);font-size:16px;cursor:pointer}.ParallelogramLessonFlow_mapNode__Th8dj span span:last-child{display:block}.ParallelogramLessonFlow_mapNode__Th8dj small{margin-left:10px;font-family:var(--font-mono);font-size:9px;color:var(--ink-3)}.ParallelogramLessonFlow_mapToday__5mI8b{background:var(--ink);border-color:var(--ink);color:var(--on-ink)}.ParallelogramLessonFlow_mapToday__5mI8b small,.ParallelogramLessonFlow_mapToday__5mI8b span span:last-child{color:color-mix(in srgb,var(--on-ink) 68%,transparent)}.ParallelogramLessonFlow_mapAnswer__RXgtw{background:var(--accent-tint);border-color:var(--accent)}.ParallelogramLessonFlow_mapWrong__Qmq_A{border-color:var(--warn)}.ParallelogramLessonFlow_mapArrowLit__b3mdy,.ParallelogramLessonFlow_mapArrow__z_f2h{padding:2px 0;font-family:var(--font-serif);font-size:18px;color:var(--ink-4)}.ParallelogramLessonFlow_mapArrowLit__b3mdy{color:var(--accent)}.ParallelogramLessonFlow_teachWorkspace__U3ctG{position:absolute;inset:0;z-index:2;padding:84px 24px 24px;display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px;align-content:start;overflow-y:auto;background:color-mix(in srgb,var(--well) 94%,transparent);animation:ParallelogramLessonFlow_riseIn__Y1_GC .45s both}.ParallelogramLessonFlow_teachCard__2oUVm{padding:17px 18px;border:1px solid var(--card-border);border-radius:4px;background:var(--surface)}.ParallelogramLessonFlow_teachLabel__R8Ezg{margin-bottom:11px;font-family:var(--font-mono);font-size:10px;letter-spacing:.13em;color:var(--ink-3)}.ParallelogramLessonFlow_falseCaught__qv9nz,.ParallelogramLessonFlow_fragment__awzMa,.ParallelogramLessonFlow_teachSlotFilled__zvbT6,.ParallelogramLessonFlow_teachSlot__fnb_v{width:100%;min-height:45px;margin-top:8px;padding:9px 12px;display:flex;gap:9px;align-items:baseline;text-align:left;border:1px dashed var(--chip-border);border-radius:3px;background:transparent;font-family:var(--font-serif);font-size:13px;line-height:1.4}.ParallelogramLessonFlow_teachSlotFilled__zvbT6{border-style:solid;background:var(--well)}.ParallelogramLessonFlow_falseCaught__qv9nz,.ParallelogramLessonFlow_fragment__awzMa{border-style:solid;cursor:pointer;color:var(--ink);background:var(--surface)}.ParallelogramLessonFlow_fragment__awzMa:hover{border-color:var(--accent)}.ParallelogramLessonFlow_fragment__awzMa:disabled{color:var(--ink-4);background:var(--line-row);cursor:default}.ParallelogramLessonFlow_falseCaught__qv9nz{color:var(--warn);text-decoration:line-through;border-color:var(--warn);background:var(--deep)}.ParallelogramLessonFlow_falseCaught__qv9nz span span:last-child,.ParallelogramLessonFlow_fragment__awzMa span span:last-child,.ParallelogramLessonFlow_teachSlotFilled__zvbT6 span span:last-child,.ParallelogramLessonFlow_teachSlot__fnb_v span span:last-child{display:block}.ParallelogramLessonFlow_finalCard__QYXOw{margin-top:12px;padding:16px 18px;border:1px solid var(--deep-border);border-radius:4px;background:var(--deep);animation:ParallelogramLessonFlow_ahaIn__Uv57O .5s both}.ParallelogramLessonFlow_finalCard__QYXOw>div:first-child{font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;color:var(--accent)}.ParallelogramLessonFlow_finalCard__QYXOw p{margin:9px 0 3px;font-family:var(--font-serif);font-size:14px;line-height:1.5}.ParallelogramLessonFlow_finalCard__QYXOw>span{font-family:var(--font-gloss);font-size:11px;color:var(--ink-3)}.ParallelogramLessonFlow_finalActions__beEvS{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}.ParallelogramLessonFlow_finalActions__beEvS a{padding:8px 13px;border:1px solid var(--chip-border);border-radius:3px;text-decoration:none;font-size:12px}.ParallelogramLessonFlow_finalActions__beEvS a:first-child{background:var(--accent);border-color:var(--accent);color:var(--on-ink)}.ParallelogramLessonFlow_notebook__e7qlv{position:fixed;z-index:40;top:55px;right:0;bottom:0;width:320px;overflow-y:auto;background:var(--surface);border-left:1px solid var(--card-border);box-shadow:-14px 0 34px var(--ink-tint);animation:ParallelogramLessonFlow_riseIn__Y1_GC .35s both}.ParallelogramLessonFlow_notebookHead__BWYSj{position:-webkit-sticky;position:sticky;top:0;padding:11px 17px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line-inner);background:var(--well);font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;color:var(--ink-3)}.ParallelogramLessonFlow_notebookHead__BWYSj em{margin-left:auto;font-family:var(--font-serif);font-style:normal;letter-spacing:0;color:var(--ink-4)}.ParallelogramLessonFlow_notebookHead__BWYSj button{padding:2px 7px;border:1px solid var(--chip-border);border-radius:3px;background:transparent;color:var(--ink-3);cursor:pointer}.ParallelogramLessonFlow_notebookBody__Wu9Eq{padding:6px 17px 16px}.ParallelogramLessonFlow_notebookEmpty__X5cWE{font-size:12.5px;line-height:1.6;color:var(--ink-4);font-style:italic}.ParallelogramLessonFlow_factNewest__DaD9x,.ParallelogramLessonFlow_fact__6APsQ{margin:0 -7px;padding:10px 7px;border-bottom:1px solid var(--line-row)}.ParallelogramLessonFlow_factNewest__DaD9x{background:var(--accent-tint)}.ParallelogramLessonFlow_factNewest__DaD9x>div,.ParallelogramLessonFlow_fact__6APsQ>div{display:flex;justify-content:space-between;align-items:baseline}.ParallelogramLessonFlow_factNewest__DaD9x span,.ParallelogramLessonFlow_fact__6APsQ span{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.1em;color:var(--ink-4)}.ParallelogramLessonFlow_factNewest__DaD9x b,.ParallelogramLessonFlow_fact__6APsQ b{font-family:var(--font-serif);font-weight:500}.ParallelogramLessonFlow_factNewest__DaD9x b[data-tone=good],.ParallelogramLessonFlow_fact__6APsQ b[data-tone=good]{color:var(--good)}.ParallelogramLessonFlow_factNewest__DaD9x b[data-tone=warn],.ParallelogramLessonFlow_fact__6APsQ b[data-tone=warn]{color:var(--warn)}.ParallelogramLessonFlow_factNewest__DaD9x b[data-tone=accent],.ParallelogramLessonFlow_fact__6APsQ b[data-tone=accent]{color:var(--accent)}.ParallelogramLessonFlow_factNewest__DaD9x p,.ParallelogramLessonFlow_fact__6APsQ p{margin:3px 0 0;font-family:var(--font-serif);font-size:13.5px;line-height:1.45}.ParallelogramLessonFlow_notebookTab__n2Bg4{position:fixed;z-index:30;right:0;top:42%;padding:14px 8px;writing-mode:vertical-rl;border:0;border-radius:3px 0 0 3px;background:var(--ink);color:var(--on-ink);font-family:var(--font-mono);font-size:10px;letter-spacing:.11em;cursor:pointer}@media (max-width:900px){.ParallelogramLessonFlow_shell__9pjNr{height:auto;min-height:100dvh;overflow:visible}.ParallelogramLessonFlow_topbar__z9jzY{position:-webkit-sticky;position:sticky;top:0;padding:0 14px}.ParallelogramLessonFlow_beats___cJPU{justify-content:flex-start;overflow-x:auto}.ParallelogramLessonFlow_beatCurrent__htUcS,.ParallelogramLessonFlow_beatDone__RQf4Z,.ParallelogramLessonFlow_beat__0sfnz{width:16px;height:18px;padding:0;overflow:hidden;color:transparent;flex:none}.ParallelogramLessonFlow_beatCurrent__htUcS span,.ParallelogramLessonFlow_beatDone__RQf4Z span,.ParallelogramLessonFlow_beat__0sfnz span,.ParallelogramLessonFlow_theorem__frzq8{display:none}.ParallelogramLessonFlow_workspace__W_7hS{display:flex;flex-direction:column}.ParallelogramLessonFlow_stage__kX7NA{height:52vh;min-height:390px;border-right:0;border-bottom:1px solid var(--line)}.ParallelogramLessonFlow_panel__RBuxj{width:100%;min-height:48vh;overflow:visible;padding:22px 20px 28px}.ParallelogramLessonFlow_mentor__7ehNK{margin-top:28px}.ParallelogramLessonFlow_mapNode__Th8dj{min-width:min(420px,82vw)}.ParallelogramLessonFlow_teachWorkspace__U3ctG{grid-template-columns:1fr;padding-top:74px}.ParallelogramLessonFlow_notebook__e7qlv{width:min(320px,88vw)}}@media (max-width:520px){.ParallelogramLessonFlow_exit__LvxxZ span{display:none}.ParallelogramLessonFlow_topRight__PowNe{gap:5px}.ParallelogramLessonFlow_stage__kX7NA{height:42vh;min-height:310px}.ParallelogramLessonFlow_panel__RBuxj{min-height:58vh}.ParallelogramLessonFlow_stageLabel__ZkbrT em{display:none}.ParallelogramLessonFlow_probeTabs__j4SRb{left:10px;right:10px;overflow-x:auto}.ParallelogramLessonFlow_probeTabActive___bG3K,.ParallelogramLessonFlow_probeTab__EvrBw{white-space:nowrap}.ParallelogramLessonFlow_teachWorkspace__U3ctG{position:relative;inset:auto;min-height:100%;padding:68px 12px 16px}}.DecimalMultiplicationLessonFlow_rangeChoices__pwcQK{display:grid;grid-template-columns:1fr;grid-gap:8px;gap:8px}.DecimalMultiplicationLessonFlow_labControls__m5BV9{display:flex;flex-direction:column;gap:10px}.DecimalMultiplicationLessonFlow_labControls__m5BV9>label{display:grid;grid-template-columns:1fr;grid-gap:4px;gap:4px;font:10.5px var(--font-mono);letter-spacing:.1em;color:var(--ink-3)}.DecimalMultiplicationLessonFlow_labControls__m5BV9 input[type=range]{width:100%;accent-color:var(--accent)}.DecimalMultiplicationLessonFlow_liveEquation__cUIoF{padding:10px 12px;border:1px solid var(--line);border-radius:3px;background:var(--well);font:16px/1.4 var(--font-serif);color:var(--ink-2)}.DecimalMultiplicationLessonFlow_liveEquation__cUIoF strong{color:var(--accent)}.DecimalMultiplicationLessonFlow_caseTable__JK5ti{border-top:1px solid var(--line)}.DecimalMultiplicationLessonFlow_caseTable__JK5ti>div{display:grid;grid-template-columns:.75fr .75fr 1.5fr 1fr;grid-gap:5px;gap:5px;padding:6px 2px;border-bottom:1px solid var(--line-row);font:12px var(--font-serif)}.DecimalMultiplicationLessonFlow_caseTable__JK5ti>div:first-child{font:9px var(--font-mono);letter-spacing:.06em;color:var(--ink-3)}.DecimalMultiplicationLessonFlow_caseTable__JK5ti strong{color:var(--accent)}.DecimalMultiplicationLessonFlow_invariantCheck__89p6p{display:flex;flex-direction:column;gap:7px}.DecimalMultiplicationLessonFlow_invariantCheck__89p6p>button{width:100%;text-align:left}.DecimalMultiplicationLessonFlow_formulaFocus__z3kFo{display:block;padding:12px;border-left:3px solid var(--accent);background:var(--accent-tint);font:22px var(--font-serif);color:var(--accent)}.DecimalMultiplicationLessonFlow_mapInstruction__PJynd{margin:0 0 12px;font:15px/1.55 var(--font-serif);color:var(--ink-2)}.DecimalMultiplicationLessonFlow_historyCard__fP5xJ{margin-top:15px;padding:14px 16px;border:1px solid var(--deep-border);border-radius:4px;background:var(--deep);animation:DecimalMultiplicationLessonFlow_ahaIn__qTTKH .5s both}.DecimalMultiplicationLessonFlow_historyCard__fP5xJ span{font:9.5px var(--font-mono);letter-spacing:.13em;color:var(--accent)}.DecimalMultiplicationLessonFlow_historyCard__fP5xJ p{margin:8px 0 0;font:13px/1.55 var(--font-serif);color:var(--ink-2)}.DecimalMultiplicationLessonFlow_mapStage__ZPaE3{position:absolute;inset:0;padding:84px 24px 28px;justify-content:center;overflow-y:auto}.DecimalMultiplicationLessonFlow_mapBranch__VZiIV,.DecimalMultiplicationLessonFlow_mapStage__ZPaE3{display:flex;flex-direction:column;align-items:center}.DecimalMultiplicationLessonFlow_mapNode__KoGHa{min-width:min(520px,78vw);padding:12px 22px;border:1px solid var(--chip-border);border-radius:4px;background:var(--surface);color:var(--ink);cursor:pointer}.DecimalMultiplicationLessonFlow_mapNode__KoGHa span{display:block;font:17px var(--font-serif)}.DecimalMultiplicationLessonFlow_mapNode__KoGHa small{display:block;margin-top:3px;font:9px var(--font-mono);letter-spacing:.11em;color:var(--ink-3)}.DecimalMultiplicationLessonFlow_mapNode__KoGHa:disabled{cursor:default}.DecimalMultiplicationLessonFlow_mapToday__Xds5o{background:var(--ink);border-color:var(--ink);color:var(--on-ink)}.DecimalMultiplicationLessonFlow_mapToday__Xds5o small{color:color-mix(in srgb,var(--on-ink) 65%,transparent)}.DecimalMultiplicationLessonFlow_mapPicked__bs1rf{border-color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}.DecimalMultiplicationLessonFlow_mapRoot__SIetv{background:var(--accent-tint);border-color:var(--accent)}.DecimalMultiplicationLessonFlow_mapArrowLit__jc5r2,.DecimalMultiplicationLessonFlow_mapArrow__jOow4{padding:3px 0;color:var(--ink-4)}.DecimalMultiplicationLessonFlow_mapArrowLit__jc5r2{color:var(--accent)}@media (max-width:900px){.DecimalMultiplicationLessonFlow_mapNode__KoGHa{min-width:min(520px,82vw)}}@media (max-width:520px){.DecimalMultiplicationLessonFlow_caseTable__JK5ti>div{grid-template-columns:.6fr .6fr 1.35fr .8fr;font-size:10.5px}.DecimalMultiplicationLessonFlow_mapStage__ZPaE3{padding-inline:12px}.DecimalMultiplicationLessonFlow_mapNode__KoGHa{min-width:88vw;padding:9px 12px}.DecimalMultiplicationLessonFlow_mapNode__KoGHa span{font-size:14px}}