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.TechnicalPrincipleVisual-module__316-gq__figure{width:min(100%,640px);color:var(--text-primary);margin:8px auto 2px}.TechnicalPrincipleVisual-module__316-gq__imageWell{background:var(--surface);border:1px solid var(--border);place-items:center;min-height:180px;display:grid;overflow:hidden}.TechnicalPrincipleVisual-module__316-gq__image{object-fit:contain;width:100%;max-height:270px;display:block}.TechnicalPrincipleVisual-module__316-gq__cueLine{color:var(--text-secondary);font-family:var(--font-body);font-size:var(--lesson-text-meta,.8125rem);align-items:baseline;gap:8px;padding:8px 0 4px;line-height:1.45;display:flex}.TechnicalPrincipleVisual-module__316-gq__cueLine span{color:var(--section-color,var(--accent));flex:none;font-weight:750}.TechnicalPrincipleVisual-module__316-gq__cueLine strong{color:var(--text-primary);font-weight:650}.TechnicalPrincipleVisual-module__316-gq__caption{color:var(--text-secondary);font-family:var(--font-reading);font-size:var(--lesson-text-body,1rem);text-align:left;line-height:1.55}@media (max-width:575px){.TechnicalPrincipleVisual-module__316-gq__imageWell{min-height:145px}.TechnicalPrincipleVisual-module__316-gq__image{max-height:220px}.TechnicalPrincipleVisual-module__316-gq__cueLine{gap:2px;display:grid}}
.LessonComponents-module__Ou25Xa__lessonContent{width:100%;max-width:64ch;font-family:var(--font-reading);font-optical-sizing:auto;font-size:var(--lesson-text-reading,clamp(1rem, .98rem + .08vw, 1.0625rem));color:var(--lesson-text-prose,var(--text-primary));overflow-wrap:break-word;margin-inline:auto;line-height:1.66}.LessonComponents-module__Ou25Xa__lessonContent p{font-size:inherit;line-height:inherit;margin-bottom:18px}.LessonComponents-module__Ou25Xa__conceptIntro{--lesson-math-inline-size:1.2em;--lesson-math-display-size:var(--lesson-math-feature-size,clamp(1.5rem, 1.4rem + .5vw, 1.75rem));color:var(--text-primary);font-size:var(--lesson-text-lead,clamp(1.125rem, 1.08rem + .22vw, 1.25rem));margin:0 0 26px;line-height:1.7}.LessonComponents-module__Ou25Xa__conceptIntro p{font-size:inherit;line-height:inherit;margin-bottom:18px}.LessonComponents-module__Ou25Xa__conceptIntro>:last-child{margin-bottom:0}.LessonComponents-module__Ou25Xa__lessonContent h2.mantine-Title-root{border-left:1px solid var(--section-color,var(--accent))!important;border-radius:0!important;padding-left:14px!important}.LessonComponents-module__Ou25Xa__lessonContent h2.mantine-Title-root{font-size:var(--lesson-text-section,1.375rem)!important;line-height:1.3!important}.LessonComponents-module__Ou25Xa__lessonContent h3.mantine-Title-root{font-size:var(--lesson-text-subheading,1.125rem)!important;border-left:0!important;padding-left:0!important;line-height:1.4!important}.LessonComponents-module__Ou25Xa__lessonContent h4.mantine-Title-root{color:var(--text-primary)!important;border-left:none!important;padding-left:0!important}.LessonComponents-module__Ou25Xa__lessonContent h2[data-lesson-section=true],.LessonComponents-module__Ou25Xa__lessonContent [data-practice-problem]{scroll-margin-top:72px}.LessonComponents-module__Ou25Xa__lessonContent ul,.LessonComponents-module__Ou25Xa__lessonContent ol{margin-bottom:16px;padding-left:24px}.LessonComponents-module__Ou25Xa__lessonContent li{margin-bottom:6px;line-height:1.6}.LessonComponents-module__Ou25Xa__lessonContent blockquote{border-left:1px solid var(--border);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--lesson-text-support,var(--text-secondary));background:0 0;margin:20px 0;padding:10px 14px;font-style:normal}.LessonComponents-module__Ou25Xa__lessonContent blockquote p{margin-bottom:8px}.LessonComponents-module__Ou25Xa__lessonContent blockquote p:last-child{margin-bottom:0}.LessonComponents-module__Ou25Xa__lessonContent p>strong:first-child{color:var(--text-primary)}.LessonComponents-module__Ou25Xa__lessonContent hr{border:none;border-top:1px solid var(--border);margin:28px 0}.LessonComponents-module__Ou25Xa__lessonContent table{border-collapse:collapse;width:100%;font-size:var(--lesson-text-table,.9375rem);margin:20px 0;line-height:1.5}.LessonComponents-module__Ou25Xa__lessonContent table th{background:var(--surface);text-align:left;border-bottom:1px solid var(--border);font-weight:600;font-size:var(--lesson-text-caption,.875rem);color:var(--text-primary);padding:12px 16px}.LessonComponents-module__Ou25Xa__lessonContent table td{border-bottom:1px solid var(--border);overflow-wrap:normal;word-break:normal;-webkit-hyphens:none;hyphens:none;padding:10px 16px}:is(.LessonComponents-module__Ou25Xa__lessonContent table th .katex,.LessonComponents-module__Ou25Xa__lessonContent table td .katex){font-size:var(--lesson-math-table-size,1.25rem)}.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table]{margin:20px 0}.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table] table{min-width:520px;margin:0}.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table] table th:nth-child(n+2),.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table] table td:nth-child(n+2){text-align:center}.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table] table td{vertical-align:middle;padding-block:14px}.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table] table td:first-child{min-width:9rem;color:var(--text-primary);white-space:nowrap;font-weight:600}.LessonComponents-module__Ou25Xa__lessonContent [data-lesson-formula-table] table td .katex{font-size:var(--lesson-math-comparison-size,1.375rem)}.LessonComponents-module__Ou25Xa__lessonContent .mantine-Table-scrollContainer{overscroll-behavior-inline:contain;scrollbar-width:thin!important;scrollbar-color:var(--text-tertiary) var(--surface-2)!important}.LessonComponents-module__Ou25Xa__lessonContent .mantine-Table-scrollContainer::-webkit-scrollbar{width:8px!important;height:8px!important;display:block!important}.LessonComponents-module__Ou25Xa__lessonContent .mantine-Table-scrollContainer::-webkit-scrollbar-track{background:var(--surface-2)!important}.LessonComponents-module__Ou25Xa__lessonContent .mantine-Table-scrollContainer::-webkit-scrollbar-thumb{background:var(--text-tertiary)!important;border:2px solid var(--surface-2)!important;border-radius:999px!important}.LessonComponents-module__Ou25Xa__lessonContent .mantine-Table-scrollContainer:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.LessonComponents-module__Ou25Xa__sectionTitle{color:var(--text-primary);border-left:1px solid var(--section-color,var(--ar));border-radius:0;margin-top:40px;font-size:var(--lesson-text-section,1.375rem)!important;line-height:1.3!important}.LessonComponents-module__Ou25Xa__sectionTitle:first-child{margin-top:0}.LessonComponents-module__Ou25Xa__subsectionTitle{color:var(--text-primary);margin-top:30px;font-size:var(--lesson-text-subheading,1.125rem)!important;line-height:1.4!important}.LessonComponents-module__Ou25Xa__infoBox{--lesson-note-color:var(--lesson-note-border,var(--border));color:var(--lesson-text-support,var(--text-primary));font-size:var(--lesson-text-body,1rem);box-shadow:none!important;background:0 0!important;border:0!important;border-radius:0!important;padding-inline:0!important}.LessonComponents-module__Ou25Xa__infoBoxWarning{--lesson-note-color:var(--warning);background:var(--lesson-note-background,var(--surface))!important;border:1px solid var(--lesson-note-border,var(--border))!important;border-left-color:var(--lesson-note-color)!important;border-radius:0 var(--pixel-radius-sm,2px) var(--pixel-radius-sm,2px) 0!important;padding-inline:16px!important}.LessonComponents-module__Ou25Xa__infoBoxTitle{color:var(--text-primary);font-size:var(--lesson-text-caption,.875rem);margin:0 0 6px;font-weight:700;line-height:1.35}.LessonComponents-module__Ou25Xa__infoBox>:last-child{margin-bottom:0}.LessonComponents-module__Ou25Xa__infoBox p,.LessonComponents-module__Ou25Xa__infoBox li{color:var(--lesson-text-support,var(--text-primary));line-height:1.65}.LessonComponents-module__Ou25Xa__infoBox .mantine-Text-root{color:var(--lesson-text-support,var(--text-primary));line-height:1.65}.LessonComponents-module__Ou25Xa__infoBox .LessonComponents-module__Ou25Xa__infoBoxTitle{color:var(--lesson-text-prose,var(--text-primary))}.LessonComponents-module__Ou25Xa__exampleBox{background:0 0;border:0!important;border-block:1px solid var(--border)!important;box-shadow:none!important;border-radius:0!important}.LessonComponents-module__Ou25Xa__exampleHeader{color:var(--text-primary);border-bottom:1px solid var(--border);background:0 0;gap:3px;padding:10px 20px;display:grid}.LessonComponents-module__Ou25Xa__exampleHeaderLabel{color:var(--text-secondary);font-weight:700;font-size:var(--lesson-text-label,.75rem);letter-spacing:.01em}.LessonComponents-module__Ou25Xa__exampleProblemTitle{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-example-prompt-size,1.375rem);font-variant-numeric:tabular-nums;text-wrap:balance;border-bottom:1px solid var(--border);margin:0 0 16px;padding-bottom:12px;font-weight:750;line-height:1.25}.LessonComponents-module__Ou25Xa__exampleBody>:last-child{margin-bottom:0}.LessonComponents-module__Ou25Xa__exampleSolution{padding-block:2px}.LessonComponents-module__Ou25Xa__exampleSolution .LessonComponents-module__Ou25Xa__exampleSteps{gap:10px;margin:0;padding:0;list-style:none;display:grid}.LessonComponents-module__Ou25Xa__exampleSteps>.LessonComponents-module__Ou25Xa__exampleStepRow{grid-template-columns:24px minmax(0,1fr);align-items:start;gap:10px;min-width:0;margin:0;display:grid}.LessonComponents-module__Ou25Xa__exampleProblem{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-example-prompt-size,1.375rem);font-variant-numeric:tabular-nums;margin:0 0 12px;font-weight:700;line-height:1.25}.LessonComponents-module__Ou25Xa__examplePromptValue{font-family:var(--font-mono);font-size:inherit;white-space:nowrap;font-weight:750}.LessonComponents-module__Ou25Xa__exampleStep{min-width:0;font-size:var(--lesson-text-body,1rem);overflow-wrap:break-word;line-height:1.55;display:block}.LessonComponents-module__Ou25Xa__exampleBody [data-lesson-key-line=true]{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-example-answer-size,1.25rem);font-variant-numeric:tabular-nums;border-top:1px solid var(--border);background:0 0;border-radius:0;margin:14px 0 0;padding:11px 14px;font-weight:700;line-height:1.4}.LessonComponents-module__Ou25Xa__stepNumber{color:var(--text-primary);background:var(--surface);border:1px solid var(--border);border-radius:var(--pixel-radius-sm,2px);width:24px;height:24px;font-size:var(--lesson-text-label,.75rem);flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;font-weight:700;display:flex}.LessonComponents-module__Ou25Xa__exampleAnswer{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-example-answer-size,1.25rem);font-variant-numeric:tabular-nums;border-top:1px solid var(--border);background:0 0;border-radius:0;margin-top:12px;padding:10px 0 0;font-weight:700;line-height:1.4}.LessonComponents-module__Ou25Xa__animatedExampleLauncher{background:var(--surface)!important;border:1px solid var(--border)!important;border-left-color:var(--section-color,var(--accent))!important;border-radius:0 var(--radius-sm) var(--radius-sm) 0!important}.LessonComponents-module__Ou25Xa__animatedExampleLauncherInner{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px;padding:16px;display:grid}.LessonComponents-module__Ou25Xa__animatedExampleLauncherCopy{min-width:0}.LessonComponents-module__Ou25Xa__animatedExampleLauncherProblem{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-text-subheading,1.125rem);margin:5px 0 2px;font-weight:700;line-height:1.4}.LessonComponents-module__Ou25Xa__animatedExampleLauncher .LessonComponents-module__Ou25Xa__exampleHeaderLabel,.LessonComponents-module__Ou25Xa__animatedExampleLauncherDescription{font-family:var(--font-body)}.LessonComponents-module__Ou25Xa__animatedExampleLauncherDescription{color:var(--text-secondary);font-size:var(--lesson-text-caption,.875rem);margin:0;line-height:1.45}.LessonComponents-module__Ou25Xa__animatedExampleLauncherInner .mantine-Button-root{min-height:44px;background:var(--section-color,var(--accent))!important;border-color:var(--section-color,var(--accent))!important}.LessonComponents-module__Ou25Xa__animatedExampleModalContent{width:min(1180px,100vw - 32px);height:min(840px,100dvh - 32px);max-height:none;color:var(--text-primary);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);flex-direction:column;display:flex;overflow:hidden;padding:0!important}.LessonComponents-module__Ou25Xa__animatedExampleModalHeader{background:var(--surface);border-bottom:1px solid var(--border);flex:none;min-height:52px;padding:4px 8px 4px 16px}.LessonComponents-module__Ou25Xa__animatedExampleModalTitle{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-text-subheading,1.125rem);font-weight:700}.LessonComponents-module__Ou25Xa__animatedExampleModalClose{min-width:44px;min-height:44px;color:var(--text-secondary);border-radius:var(--radius-sm)}.LessonComponents-module__Ou25Xa__animatedExampleModalClose:hover{color:var(--text-primary);background:var(--surface-2)}.LessonComponents-module__Ou25Xa__animatedExampleModalClose:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;box-shadow:none}.LessonComponents-module__Ou25Xa__animatedExampleModalBody{flex:auto;min-height:0;padding:0;display:flex;overflow:hidden}.LessonComponents-module__Ou25Xa__animatedWorkedExample{background:var(--surface)}.LessonComponents-module__Ou25Xa__lessonTutor{width:100%;height:100%;min-height:0;color:var(--text-primary);background:var(--surface);flex:auto;grid-template-rows:auto minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr);display:grid;overflow:hidden}.LessonComponents-module__Ou25Xa__lessonTutorTopbar{background:var(--surface-2);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;min-height:58px;padding:10px 16px;display:flex}.LessonComponents-module__Ou25Xa__lessonTutorIdentity{flex:auto;align-items:center;gap:10px;min-width:0;display:flex}.LessonComponents-module__Ou25Xa__lessonTutorIdentity>div{min-width:0}.LessonComponents-module__Ou25Xa__lessonTutorStepAvatar{color:var(--section-color,var(--accent));background:var(--accent-dim);border:1px solid color-mix(in srgb, var(--section-color,var(--accent)) 38%, var(--border));flex:none;place-items:center;display:grid}.LessonComponents-module__Ou25Xa__lessonTutorName{font-size:var(--lesson-text-body,1rem);margin:0;font-weight:750;line-height:1.2}.LessonComponents-module__Ou25Xa__lessonTutorStatus{color:var(--text-secondary);font-size:var(--lesson-text-meta,.8125rem);margin:3px 0 0;line-height:1.25}.LessonComponents-module__Ou25Xa__lessonTutorSessionMeta{flex:none;grid-template-columns:auto minmax(72px,112px) auto;align-items:center;gap:10px;display:grid}.LessonComponents-module__Ou25Xa__lessonTutorPhase{color:var(--text-secondary);font-size:var(--lesson-text-meta,.8125rem);white-space:nowrap;font-weight:650}.LessonComponents-module__Ou25Xa__lessonTutorProgress{gap:3px;display:flex}.LessonComponents-module__Ou25Xa__lessonTutorProgress>span{background:var(--border-hover);height:3px;transition:background var(--transition-base);flex:1 1 0}.LessonComponents-module__Ou25Xa__lessonTutorProgress>span[data-complete=true]{background:var(--section-color,var(--accent))}.LessonComponents-module__Ou25Xa__lessonTutorRemaining{color:var(--text-tertiary);font-family:var(--font-mono);font-size:var(--lesson-text-meta,.8125rem);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);flex:none;padding:4px 6px;font-weight:600}.LessonComponents-module__Ou25Xa__lessonTutorTranscript{background:var(--bg);overscroll-behavior-y:contain;scrollbar-color:var(--border-hover) transparent;scrollbar-width:thin;touch-action:pan-y;-webkit-overflow-scrolling:touch;flex-direction:column;gap:14px;min-height:0;padding:18px 20px;display:flex;overflow:clip auto}.LessonComponents-module__Ou25Xa__lessonTutorTranscript::-webkit-scrollbar{width:8px}.LessonComponents-module__Ou25Xa__lessonTutorTranscript::-webkit-scrollbar-track{background:0 0}.LessonComponents-module__Ou25Xa__lessonTutorTranscript::-webkit-scrollbar-thumb{background:var(--border-hover);background-clip:padding-box;border:2px solid #0000;border-radius:999px}.LessonComponents-module__Ou25Xa__lessonTutorMessageRow{align-items:flex-start;gap:9px;width:100%;display:flex}.LessonComponents-module__Ou25Xa__lessonTutorSequence{flex-direction:column;gap:14px;display:flex}.LessonComponents-module__Ou25Xa__lessonTutorMessageRow[data-role=user]{justify-content:flex-end;padding-left:18%}.LessonComponents-module__Ou25Xa__lessonTutorMessageRow[data-role=assistant]{padding-right:0}.LessonComponents-module__Ou25Xa__lessonTutorStepAvatar{border-radius:var(--radius-sm);width:26px;height:26px;color:var(--text-primary);font-family:var(--font-mono);font-size:var(--lesson-text-label,.75rem);background:var(--surface-2);border-color:var(--border);margin-top:2px;font-weight:750}.LessonComponents-module__Ou25Xa__lessonTutorMessageStack{flex:1 1 0;gap:8px;width:min(100%,650px);min-width:0;max-width:min(100%,650px);display:grid}.LessonComponents-module__Ou25Xa__lessonTutorBubble{width:fit-content;max-width:min(100%,650px);color:var(--text-primary);font-family:var(--font-reading);font-optical-sizing:auto;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:13px 14px}.LessonComponents-module__Ou25Xa__lessonTutorMessageStack>.LessonComponents-module__Ou25Xa__lessonTutorBubble{width:100%}.LessonComponents-module__Ou25Xa__lessonTutorMessageRow[data-role=user]>.LessonComponents-module__Ou25Xa__lessonTutorBubble{color:var(--text-primary);background:var(--accent-dim);border-color:color-mix(in srgb, var(--section-color,var(--accent)) 42%, var(--border));border-radius:var(--radius-sm)}.LessonComponents-module__Ou25Xa__lessonTutorBubble[data-step=true]{border-left:1px solid var(--section-color,var(--accent));border-radius:0 var(--radius-sm) var(--radius-sm) 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0;font-weight:700;line-height:1.35}.LessonComponents-module__Ou25Xa__animatedExampleProgress{gap:4px;display:flex}.LessonComponents-module__Ou25Xa__animatedExampleProgress>span{background:var(--surface-3);border-radius:var(--radius-sm);height:4px;transition:background var(--transition-slow), transform var(--transition-slow);flex:1}.LessonComponents-module__Ou25Xa__animatedExampleProgress>span[data-complete=true]{background:var(--section-color,var(--accent));transform:scaleY(1.35)}.LessonComponents-module__Ou25Xa__animatedExampleBody{padding:16px}.LessonComponents-module__Ou25Xa__animatedExampleProblem{color:var(--text-primary);font-family:var(--font-display);font-size:var(--lesson-example-prompt-size,1.375rem);border-bottom:1px solid var(--border);margin:0 0 18px;padding:0 0 14px;font-weight:700;line-height:1.3}.LessonComponents-module__Ou25Xa__animatedExamplePrediction{gap:14px;display:grid}.LessonComponents-module__Ou25Xa__animatedExamplePrompt{color:var(--text-primary);font-size:var(--lesson-text-body,1rem);margin:0;font-weight:650;line-height:1.55}.LessonComponents-module__Ou25Xa__animatedExampleChoices{gap:8px;display:grid}.LessonComponents-module__Ou25Xa__animatedExampleChoice{width:100%;min-height:48px;color:var(--text-primary);font:inherit;text-align:left;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);background:0 0;grid-template-columns:32px minmax(0,1fr);align-items:center;gap:10px;padding:8px 12px;font-weight:600;line-height:1.4;display:grid}.LessonComponents-module__Ou25Xa__animatedExampleChoice>span:first-child{width:32px;height:32px;color:var(--text-secondary);font-family:var(--font-mono);font-size:var(--lesson-text-meta,.8125rem);border:1px solid var(--border);border-radius:var(--radius-sm);place-items:center;display:grid}.LessonComponents-module__Ou25Xa__animatedExampleChoice:hover{background:var(--surface-2);border-color:var(--border-hover)}.LessonComponents-module__Ou25Xa__animatedExampleChoice:active{transform:scale(.99)}.LessonComponents-module__Ou25Xa__animatedExampleChoice:focus-visible{outline:2px solid 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LessonComponents-module__Ou25Xa__animatedExampleEnter;display:grid}.LessonComponents-module__Ou25Xa__animatedExampleFeedback[data-result=wrong]{border-left-color:var(--warning)}.LessonComponents-module__Ou25Xa__animatedExampleFeedback .mantine-Text-root{margin:0;line-height:1.5}.LessonComponents-module__Ou25Xa__animatedExampleFeedback .mantine-Button-root{width:max-content;min-height:44px;margin-top:4px}.LessonComponents-module__Ou25Xa__animatedExampleStep{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);min-height:190px;padding:18px;animation:.36s both 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