.JEMtMW_page{--lesson-mono:ui-monospace, SFMono-Regular, Menlo, monospace;--lesson-sticky-top:calc(var(--app-header-height,84px) + 16px);background:var(--color-bg);min-width:0;color:var(--color-text);font-family:var(--font-sans)}.JEMtMW_visuallyHidden{}.JEMtMW_spinner{animation:.9s linear infinite JEMtMW_lesson-spin}@keyframes JEMtMW_lesson-spin{to{transform:rotate(360deg)}}.JEMtMW_pageState{color:var(--color-secondary);font-size:var(--text-base);text-align:center;flex-direction:column;align-items:center;gap:12px;padding:96px 24px;display:flex}.JEMtMW_pageState p{margin:0}.JEMtMW_topBar{border-bottom:1px solid var(--color-divider);background:var(--color-surface-strong)}.JEMtMW_topBarInner{flex-wrap:wrap;align-items:center;gap:16px;width:100%;max-width:1140px;margin:0 auto;padding:12px 24px;display:flex}.JEMtMW_contentsToggle{border:1px solid var(--color-control-border);border-radius:var(--radius-sm);background:var(--color-surface-strong);height:36px;color:var(--color-heading);font:inherit;font-size:var(--text-md);font-weight:var(--font-weight-semibold);cursor:pointer;flex:none;align-items:center;gap:8px;padding:0 12px;display:inline-flex}.JEMtMW_contentsToggleActive{border-color:var(--color-primary);background:var(--color-primary-wash);color:var(--color-primary);}.JEMtMW_breadcrumb{min-width:0;color:var(--color-label);font-size:var(--text-md);white-space:nowrap;flex:260px;align-items:center;gap:8px;display:flex;overflow:hidden}.JEMtMW_breadcrumbCourse{min-width:0;color:var(--color-label);text-overflow:ellipsis;text-decoration:none;overflow:hidden}.JEMtMW_breadcrumbCourse:hover{color:var(--color-primary)}.JEMtMW_breadcrumbSeparator{color:var(--color-disabled);flex:none}.JEMtMW_breadcrumbModule{color:var(--color-label);font:inherit;font-size:var(--text-md);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;flex:none;padding:0;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}.JEMtMW_breadcrumbLesson{min-width:0;color:var(--color-heading);font-weight:var(--font-weight-semibold);text-overflow:ellipsis;overflow:hidden}.JEMtMW_lessonNumber{font-family:var(--lesson-mono)}.JEMtMW_topBarProgress{color:var(--color-label);font-size:var(--text-md);white-space:nowrap;align-items:center;gap:10px;display:flex}.JEMtMW_topBarMeter{width:140px}.JEMtMW_topBarNav{gap:6px;display:flex}.JEMtMW_previousButton{border:1px solid var(--color-control-border);border-radius:var(--radius-sm);background:var(--color-surface-strong);width:36px;height:36px;color:var(--color-label);justify-content:center;align-items:center;text-decoration:none;display:inline-flex}.JEMtMW_previousButton:hover{border-color:var(--color-primary);color:var(--color-primary)}.JEMtMW_nextButton{border-radius:var(--radius-sm);background:var(--color-primary);height:36px;color:var(--color-on-primary);font-size:var(--text-md);font-weight:var(--font-weight-semibold);white-space:nowrap;align-items:center;gap:6px;padding:0 14px;text-decoration:none;display:inline-flex}.JEMtMW_nextButton:hover{background:var(--color-primary-hover);color:var(--color-on-primary)}.JEMtMW_body{flex-wrap:wrap;align-items:flex-start;gap:24px;width:100%;max-width:1140px;margin:0 auto;padding:28px 24px 56px;display:flex}.JEMtMW_bodyWithRail{max-width:1180px;}.JEMtMW_rail{top:var(--lesson-sticky-top);width:272px;min-width:0;max-height:calc(100vh - var(--lesson-sticky-top) - 16px);border:1px solid var(--color-border);border-radius:var(--radius-xl);background:var(--color-surface-strong);flex-direction:column;flex:0 0 272px;display:flex;position:sticky;overflow:hidden}.JEMtMW_railHeader{align-items:center;gap:10px;padding:14px 14px 12px;display:flex}.JEMtMW_railHeading{flex-direction:column;flex:1;gap:4px;min-width:0;display:flex}.JEMtMW_railTitle{color:var(--color-label);font-size:var(--text-sm);font-weight:var(--font-weight-bold);letter-spacing:.06em;text-transform:uppercase}.JEMtMW_railSummary{color:var(--color-muted);font-size:var(--text-sm)}.JEMtMW_railClose{border:1px solid var(--color-control-border);border-radius:var(--radius-xs);background:var(--color-surface-strong);width:30px;height:30px;color:var(--color-label);cursor:pointer;flex:none;justify-content:center;align-items:center;display:inline-flex}.JEMtMW_railSearch{border:1px solid var(--color-control-border);background:var(--color-bg);height:34px;color:var(--color-muted);border-radius:9px;align-items:center;gap:8px;margin:0 14px 10px;padding:0 10px;display:flex}.JEMtMW_railSearch:focus-within{border-color:var(--color-primary);box-shadow:var(--focus-ring)}.JEMtMW_railSearch input{min-width:0;color:var(--color-heading);font:inherit;font-size:var(--text-md);background:0 0;border:0;outline:none;flex:1}.JEMtMW_railModules{flex-direction:column;margin:0;padding:0 8px 8px;list-style:none;display:flex;overflow:auto}.JEMtMW_railModule{border-top:1px solid var(--color-divider)}.JEMtMW_railModuleToggle{border-radius:var(--radius-sm);width:100%;color:var(--color-heading);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;padding:10px;display:flex}.JEMtMW_railModuleToggle:hover{background:var(--color-surface-subtle)}.JEMtMW_railChevron{color:var(--color-muted);flex:none}.JEMtMW_railModuleCopy{flex-direction:column;flex:1;gap:3px;min-width:0;display:flex}.JEMtMW_railModuleTitle{font-size:var(--text-md);font-weight:var(--font-weight-semibold);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.JEMtMW_railModuleMeta{color:var(--color-muted);font-size:var(--text-xs);align-items:center;gap:8px;display:flex}.JEMtMW_railModuleTrack{border-radius:var(--radius-pill);background:var(--color-surface-muted);flex:none;width:56px;height:4px}.JEMtMW_railModuleFill{border-radius:var(--radius-pill);background:var(--color-primary);height:4px;display:block}.JEMtMW_railModuleFillDone{background:var(--green-400);}.JEMtMW_railLessons{flex-direction:column;gap:1px;margin:0 0 6px;padding:0 0 0 10px;list-style:none;display:flex}.JEMtMW_railLesson{border-radius:var(--radius-xs);color:var(--color-text-body);font-size:var(--text-md);align-items:flex-start;gap:10px;padding:7px 10px;text-decoration:none;display:flex}.JEMtMW_railLesson:hover{background:var(--color-surface-subtle);color:var(--color-primary)}.JEMtMW_railLessonCurrent{background:var(--color-primary-wash);color:var(--color-primary);font-weight:var(--font-weight-semibold);}.JEMtMW_railLessonCurrent:hover{background:var(--color-primary-wash)}.JEMtMW_railLessonNumber{color:var(--color-muted);font-family:var(--lesson-mono);font-size:var(--text-sm);flex:none}.JEMtMW_railLessonCurrent .JEMtMW_railLessonNumber{color:var(--color-primary)}.JEMtMW_railLessonCopy{flex-direction:column;gap:2px;min-width:0;line-height:1.35;display:flex}.JEMtMW_railLessonTag{color:var(--color-eyebrow);font-size:var(--text-2xs);font-weight:var(--font-weight-bold);letter-spacing:.04em;text-transform:uppercase}.JEMtMW_markTodo{border:1px solid 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