.practice-editor_panel__mQ112{border:1px solid var(--line-soft);border-radius:16px;background:var(--surface);padding:24px}.practice-editor_checks__ojb17{gap:24px}.practice-editor_list__wqK5u{border-right:1px solid var(--line-soft);padding-right:16px}.practice-editor_list__wqK5u button{border-radius:12px}.practice-editor_list__wqK5u button[aria-pressed=true]{box-shadow:inset 3px 0 0 var(--theme-clay)}.practice-editor_dataField__GziKg{display:block;overflow:hidden;border:1px solid var(--line-soft);border-radius:12px;background:var(--surface-muted)}.practice-editor_dataField__GziKg>span{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--line-soft);font-size:12px;font-weight:500}.practice-editor_dataField__GziKg textarea{display:block;margin:0;border:0;border-radius:0;background:transparent;padding:14px;min-height:148px}.practice-editor_dataField__GziKg:focus-within{outline:2px solid var(--theme-clay);outline-offset:2px}.practice-editor_settings__9Nsee{border:1px solid var(--line-soft);border-radius:16px;background:var(--surface);padding:0 24px}.practice-editor_settings__9Nsee>div{display:grid;grid-template-columns:minmax(140px,1fr) minmax(220px,1.6fr);gap:8px 24px;align-items:center;padding:22px 0}.practice-editor_settings__9Nsee>div+div{border-top:1px solid var(--line-soft)}.practice-editor_settings__9Nsee>div>span{font-size:14px;letter-spacing:0;text-transform:none;font-weight:500;color:var(--theme-ink)}.practice-editor_settings__9Nsee select{margin:0;border-radius:10px;min-height:44px;background:var(--surface-muted)}.practice-editor_settings__9Nsee p{grid-column:2;margin:0}.practice-editor_disclosure__3vgmP{border:1px solid var(--line-soft);border-radius:14px;padding:16px 20px;background:var(--surface)}.practice-editor_disclosure__3vgmP>summary{font-weight:500}.practice-editor_disclosure__3vgmP[open]>summary{margin-bottom:20px}.practice-editor_hint__P18ir{border:1px solid var(--line-soft);border-radius:14px;background:var(--surface);overflow:hidden}.practice-editor_hint__P18ir[open]{border-color:var(--theme-clay)}.practice-editor_hint__P18ir summary{display:flex;align-items:center;gap:14px;padding:18px 20px;list-style:none;cursor:pointer}.practice-editor_hint__P18ir summary::-webkit-details-marker{display:none}.practice-editor_hintNumber__f08lS{display:grid;place-items:center;height:36px;width:36px;flex-shrink:0;border-radius:10px;background:var(--surface-muted);font-size:14px;font-weight:600}.practice-editor_hint__P18ir[open] .practice-editor_hintNumber__f08lS{color:var(--theme-ink);background:color-mix(in srgb,var(--theme-clay) 20%,transparent)}.practice-editor_hintBody__Rf8UI{padding:0 20px 20px 70px}@media (max-width:1023px){.practice-editor_list__wqK5u{border-right:0;padding-right:0}}@media (max-width:639px){.practice-editor_panel__mQ112{padding:16px}.practice-editor_settings__9Nsee{padding:0 16px}.practice-editor_settings__9Nsee>div{grid-template-columns:minmax(0,1fr);gap:10px;padding:18px 0}.practice-editor_settings__9Nsee p{grid-column:1}.practice-editor_hint__P18ir summary{padding:16px;gap:10px}.practice-editor_hintBody__Rf8UI{padding:0 16px 16px}.practice-editor_disclosure__3vgmP{padding:16px}}.step-editor_stepEditor__rfWxA [data-editor-shell]{border-radius:10px;box-shadow:none}.step-editor_stepEditor__rfWxA [data-editor-toolbar]{border-radius:10px 10px 0 0}.step-editor_disclosure__zcUu_{border-top:1px solid var(--line-muted);padding-top:.75rem}.step-editor_disclosure__zcUu_>summary{align-items:center;color:var(--text-muted);cursor:pointer;display:flex;font-size:.75rem;font-weight:600;gap:.6rem;justify-content:space-between;list-style:none;min-height:2rem}.step-editor_disclosure__zcUu_>summary::-webkit-details-marker{display:none}.step-editor_disclosure__zcUu_>summary:after{content:"+";font-size:1rem;font-weight:400;line-height:1}.step-editor_disclosure__zcUu_[open]>summary:after{content:"−"}.step-editor_disclosureState__eMFMj{color:var(--text-muted);font-size:.68rem;font-weight:500;margin-left:auto}.step-editor_answerList__a29os{border-top:1px solid var(--line-muted)}.step-editor_answerRow__4c99o{border-bottom:1px solid var(--line-muted);padding:.65rem 0}.step-editor_answerFeedback__mFfdt{margin-left:3.25rem;margin-top:.35rem}.step-editor_answerFeedback__mFfdt>summary{color:var(--text-muted);cursor:pointer;font-size:.72rem;list-style:none;padding:.25rem 0;width:-moz-fit-content;width:fit-content}.step-editor_answerFeedback__mFfdt>summary::-webkit-details-marker{display:none}.step-editor_answerFeedback__mFfdt>summary:hover{color:inherit}.step-editor_answerFeedback__mFfdt textarea{margin-top:.45rem}.step-editor_editorHelp__Uol76{color:var(--text-muted);font-size:.72rem;line-height:1.55}.step-editor_editorHelp__Uol76>summary{cursor:pointer;list-style:none;width:-moz-fit-content;width:fit-content}.step-editor_editorHelp__Uol76>summary::-webkit-details-marker{display:none}.step-editor_editorHelp__Uol76>p{margin-top:.4rem;max-width:48rem}@media (max-width:639px){.step-editor_answerFeedback__mFfdt{margin-left:1.75rem}}.course-learning_outline__s5rah{background:var(--surface-solid)}.course-learning_outlineHeader__BpTAL{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:18px 20px;border-bottom:1px solid var(--line-muted)}.course-learning_outlineTitle__dVaCo{min-width:0;color:var(--theme-ink);font-size:15px;font-weight:600;line-height:1.45;overflow-wrap:anywhere}.course-learning_lessonMeta__LUrX0,.course-learning_moduleMeta__4y7Nf,.course-learning_outlineMeta__s_4d5{color:var(--text-muted);font-size:12px;font-weight:400;line-height:1.45}.course-learning_lessonList__zoEoo,.course-learning_moduleList__RR9GF,.course-learning_stepList__VN0yt{display:grid;min-width:0}.course-learning_moduleRow__dxp_n{display:flex;width:100%;min-width:0;align-items:flex-start;gap:10px;padding:15px 10px;border-top:1px solid var(--line-muted);color:var(--theme-ink);text-align:left}.course-learning_moduleRowActive__AGPRG{color:var(--theme-clay)}.course-learning_moduleTitle__HvOfS{min-width:0;flex:1;font-size:13px;font-weight:600;line-height:1.5;overflow-wrap:anywhere}.course-learning_moduleMeta__4y7Nf{display:block;margin-top:4px}.course-learning_lessonList__zoEoo{gap:3px;padding:0 0 10px}.course-learning_lessonRow__KvdAi{display:flex;width:100%;min-width:0;align-items:flex-start;gap:10px;padding:10px;border-radius:8px;color:var(--text-muted);font-size:13px;line-height:1.5;text-align:left}a.course-learning_lessonRow__KvdAi:hover,button.course-learning_lessonRow__KvdAi:hover{background:var(--surface-muted);color:var(--theme-ink)}.course-learning_lessonRowActive__4GBr_{background:color-mix(in srgb,var(--theme-clay) 12%,var(--surface-solid));box-shadow:inset 3px 0 var(--theme-clay);color:var(--theme-ink)}.course-learning_lessonTitle__yr9Y6{min-width:0;flex:1;overflow-wrap:anywhere}.course-learning_lessonMeta__LUrX0{display:flex;flex-wrap:wrap;gap:4px 10px;margin-top:4px}.course-learning_stepList__VN0yt{grid-template-columns:repeat(auto-fit,minmax(34px,max-content));gap:8px}.course-learning_stepItem__yPAG2,.course-learning_stepMarker__hwlem{display:inline-flex;align-items:center;justify-content:center}.course-learning_stepMarker__hwlem{width:46px;height:46px;flex:0 0 46px;border:1px solid var(--line-soft);border-radius:50%;background:var(--surface-solid);color:var(--text-muted);font-size:12px;font-weight:600}.course-learning_stepMarkerActive__K73Ri{border-color:var(--theme-ink);background:var(--theme-ink);color:var(--theme-parchment)}.course-learning_stepMarkerDone__mW6uc{border-color:color-mix(in srgb,var(--theme-moss) 48%,var(--line-soft));background:color-mix(in srgb,var(--theme-moss) 14%,var(--surface-solid));color:var(--theme-ink)}.course-learning_readingPane__uG5CG{width:100%;max-width:880px;margin-inline:auto;padding:28px 36px 64px}.course-learning_primaryAction__JILUp,.course-learning_secondaryAction__4oiRF{display:inline-flex;min-height:42px;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:10px 19px;font-size:14px;font-weight:500;line-height:1.4;transition:border-color .15s,background .15s,color .15s,opacity .15s}.course-learning_primaryAction__JILUp{border:1px solid var(--theme-ink);background:var(--theme-ink);color:var(--theme-parchment)}.course-learning_primaryAction__JILUp:hover{opacity:.85}.course-learning_secondaryAction__4oiRF{border:1px solid var(--line-soft);background:var(--surface-solid);color:var(--theme-ink)}.course-learning_secondaryAction__4oiRF:hover{border-color:color-mix(in srgb,var(--theme-clay) 45%,var(--line-soft));color:var(--theme-clay)}.course-learning_primaryAction__JILUp:disabled,.course-learning_secondaryAction__4oiRF:disabled{opacity:.5;cursor:wait}@media (max-width:1023px){.course-learning_readingPane__uG5CG{padding:24px 24px 48px}}@media (max-width:600px){.course-learning_readingPane__uG5CG{padding:20px 16px 40px}}@media (prefers-reduced-motion:reduce){.course-learning_primaryAction__JILUp,.course-learning_secondaryAction__4oiRF{transition:none}}.teacher-workspace_workspace__NtByq{display:flex;flex-direction:column;min-height:calc(100svh - var(--course-workspace-header-height, 90px));margin-bottom:-4rem;background:var(--theme-parchment)}.teacher-workspace_editorLayout__0nlZ8{display:flex;flex:1;min-height:calc(100svh - var(--course-workspace-content-top));border-top:1px solid var(--line-muted)}.teacher-workspace_rail__zvSlD{width:310px;flex-shrink:0;border-right:1px solid var(--line-muted);background:var(--surface-solid)}.teacher-workspace_railInner__rcWw8{position:sticky;top:var(--course-workspace-content-top);height:calc(100svh - var(--course-workspace-content-top));overflow-y:auto;scrollbar-width:thin}.teacher-workspace_main__YsRmG{min-width:0;flex:1;background:var(--theme-parchment)}.teacher-workspace_reading__4SX87{width:100%;max-width:920px;margin:0 auto;padding:30px 40px 72px}.teacher-workspace_readingWide__2GLEe{max-width:1120px}.teacher-workspace_lessonHeading__ZE6_k{margin:0;color:var(--theme-ink);font-family:var(--font-display),Georgia,serif;font-size:clamp(25px,2.4vw,34px);font-weight:500;line-height:1.3;overflow-wrap:anywhere;text-wrap:pretty}.teacher-workspace_titleRow__SgNlU{display:flex;align-items:flex-start;gap:10px}.teacher-workspace_titleRow__SgNlU .teacher-workspace_lessonHeading__ZE6_k{min-width:0;flex:1}.teacher-workspace_editTitleButton__YEQrc{display:grid;width:36px;height:36px;flex-shrink:0;place-items:center;border-radius:7px;color:var(--text-muted)}.teacher-workspace_editTitleButton__YEQrc:hover{background:var(--surface-muted);color:var(--theme-ink)}.teacher-workspace_titleEditor__p9ft9{display:grid;gap:10px}.teacher-workspace_titleInput__CV1_p{width:100%;border:0;border-bottom:2px solid var(--theme-clay);padding:2px 0 8px;background:transparent;color:var(--theme-ink);font-family:var(--font-display),Georgia,serif;font-size:clamp(25px,2.4vw,34px);font-weight:500;line-height:1.3;outline:none}.teacher-workspace_titleActions__nMsbv{display:flex;justify-content:flex-end;gap:8px}.teacher-workspace_titleError__ALN8m{color:var(--status-danger-fg);font-size:12px;line-height:1.45}.teacher-workspace_titleCancel__VgShN,.teacher-workspace_titleSave__EHUVN{min-height:36px;border-radius:8px;padding:7px 13px;font-size:13px;font-weight:600}.teacher-workspace_titleCancel__VgShN{color:var(--text-muted)}.teacher-workspace_titleCancel__VgShN:hover{background:var(--surface-muted);color:var(--theme-ink)}.teacher-workspace_titleSave__EHUVN{background:var(--theme-ink);color:var(--theme-parchment)}.teacher-workspace_titleCancel__VgShN:disabled,.teacher-workspace_titleSave__EHUVN:disabled{cursor:wait;opacity:.5}.teacher-workspace_stepTypeIcon__HhWwI{--step-accent:var(--theme-clay);display:grid;width:36px;height:36px;flex-shrink:0;place-items:center;border:1px solid color-mix(in srgb,var(--step-accent) 48%,var(--line-soft));border-radius:50%;background:color-mix(in srgb,var(--step-accent) 14%,var(--surface-solid));color:var(--step-accent)}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=TEXT]{--step-accent:#2563eb}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=VIDEO]{--step-accent:#7c3aed}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=CODE]{--step-accent:#ea580c}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=CHOICE]{--step-accent:#15803d}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=NUMBER]{--step-accent:#c2410c}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=FREE_TEXT]{--step-accent:#be123c}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=SORTING]{--step-accent:#0f766e}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=MATCHING]{--step-accent:#4f46e5}.teacher-workspace_stepTypeIcon__HhWwI[data-step-type=REVIEW]{--step-accent:#9333ea}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=TEXT]{--step-accent:#7aa2ff}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=VIDEO]{--step-accent:#b69cff}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=CODE]{--step-accent:#ff9a67}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=CHOICE]{--step-accent:#72c991}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=NUMBER]{--step-accent:#ffae72}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=FREE_TEXT]{--step-accent:#ff8fa3}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=SORTING]{--step-accent:#68c9bd}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=MATCHING]{--step-accent:#9aa7ff}html[data-theme=dark] .teacher-workspace_stepTypeIcon__HhWwI[data-step-type=REVIEW]{--step-accent:#d5a0ff}.teacher-workspace_stepPosition__p1y0x{margin-right:7px;color:var(--text-muted);font-size:11px;font-weight:600}.teacher-workspace_stepStrip__7x1TU{display:flex;min-width:-moz-max-content;min-width:max-content;align-items:center;gap:9px;padding:2px 2px 8px}.teacher-workspace_stepCircle__KJLxQ{flex-direction:column;gap:1px;touch-action:none;cursor:grab;transition:border-color .15s,background .15s,color .15s,margin .2s,opacity .2s,transform .2s}.teacher-workspace_stepNumber__ixbdV{font-size:10px;line-height:1}.teacher-workspace_stepCircle__KJLxQ:hover{border-color:color-mix(in srgb,var(--theme-clay) 38%,var(--line-soft));color:var(--theme-ink)}.teacher-workspace_stepCircleAdd__MwvJ0{border-style:dashed;color:var(--theme-clay)}.teacher-workspace_editorToolbar__e9yyh{display:flex;align-items:center;gap:8px;border-top:1px solid var(--line-muted);border-bottom:1px solid var(--line-muted);padding:12px 0}.teacher-workspace_toolbarLink__EyATB{display:inline-flex;min-height:38px;align-items:center;gap:7px;padding:8px 10px;border-radius:7px;color:var(--text-muted);font-size:14px;font-weight:500}.teacher-workspace_toolbarLink__EyATB:hover{background:var(--surface-muted);color:var(--theme-ink)}.teacher-workspace_saveButton___oK3U{display:inline-flex;min-height:38px;align-items:center;gap:7px;border-radius:8px;padding:8px 15px;background:var(--theme-ink);color:var(--theme-parchment);font-size:14px;font-weight:600}.teacher-workspace_saveButton___oK3U:hover{opacity:.86}.teacher-workspace_saveButton___oK3U:disabled{cursor:wait;opacity:.5}.teacher-workspace_toolbarOverflow__pM3fN{margin-left:auto}.teacher-workspace_rowMenu__eXTzj>button,.teacher-workspace_sectionMenu__Kkxku>button,.teacher-workspace_toolbarOverflow__pM3fN>button{display:grid;width:36px;height:36px;cursor:pointer;place-items:center;border-radius:7px;color:var(--text-muted);list-style:none}.teacher-workspace_rowMenu__eXTzj>button:hover,.teacher-workspace_sectionMenu__Kkxku>button:hover,.teacher-workspace_toolbarOverflow__pM3fN>button:hover{background:var(--surface-muted);color:var(--theme-ink)}.teacher-workspace_popoverPanel__opKzR{position:fixed;z-index:200;width:min(260px,calc(100vw - 16px));overflow:auto;overscroll-behavior:contain;border:1px solid var(--line-soft);border-radius:10px;padding:6px;background:var(--surface-solid);box-shadow:0 18px 55px rgba(23,20,16,.2)}.teacher-workspace_menu__ePbvM{display:grid;gap:2px}.teacher-workspace_menu__ePbvM>button{display:flex;width:100%;align-items:center;gap:9px;border-radius:7px;padding:9px 10px;color:var(--theme-ink);font-size:13px;text-align:left}.teacher-workspace_menu__ePbvM>button:hover{background:var(--surface-muted)}.teacher-workspace_menu__ePbvM .teacher-workspace_danger__Xxyjc{color:var(--status-danger-fg)}.teacher-workspace_menuDivider__o2qCc{height:1px;margin:3px 4px;background:var(--line-muted)}.teacher-workspace_tree__zVm_D{background:var(--surface-solid)}.teacher-workspace_treeCourse__eXOFj{display:flex;align-items:flex-start;gap:11px;padding:20px 18px 18px;border-bottom:1px solid var(--line-muted)}.teacher-workspace_treeCourseButton__i36gq{display:flex;min-width:0;flex:1;align-items:flex-start;gap:10px;text-align:left}.teacher-workspace_treeCourseTitle__r5nBH{color:var(--theme-ink);font-size:14px;font-weight:600;line-height:1.45;overflow-wrap:anywhere}.teacher-workspace_treeCourseMeta__14v2H{margin-top:4px;color:var(--text-muted);font-size:11px}.teacher-workspace_sectionHeader__qZG_Z{display:flex;flex-wrap:wrap;align-items:flex-start;gap:6px;padding:15px 8px 12px 10px}.teacher-workspace_sectionToggle__vfz5R{display:grid;width:28px;height:28px;flex-shrink:0;place-items:center;border-radius:6px;color:var(--theme-ink)}.teacher-workspace_sectionToggle__vfz5R:hover{background:var(--surface-muted)}.teacher-workspace_sectionChevron__1dXNX{flex-shrink:0;margin-top:3px;color:var(--text-muted)}.teacher-workspace_sectionTitle__X0bGl{min-width:0;flex:1;font-size:13px;font-weight:600;line-height:1.5;overflow-wrap:anywhere}.teacher-workspace_sectionMeta__Cb5v1{display:block;margin-top:3px;color:var(--text-muted);font-size:11px;font-weight:400}.teacher-workspace_rowMenu__eXTzj,.teacher-workspace_sectionMenu__Kkxku{flex-shrink:0}.teacher-workspace_rowMenu__eXTzj>button,.teacher-workspace_sectionMenu__Kkxku>button{width:30px;height:30px}.teacher-workspace_lessonRow__Ezec2{position:relative;display:flex;flex-wrap:wrap;align-items:flex-start;gap:4px}.teacher-workspace_lessonRow__Ezec2:hover{background:var(--surface-muted);color:var(--theme-ink)}.teacher-workspace_lessonOpen__MIB4m{min-width:0;flex:1}.teacher-workspace_lessonDrag__LLlH5{display:grid;width:24px;height:34px;flex-shrink:0;touch-action:none;cursor:grab;place-items:center;border-radius:6px;color:var(--text-muted);opacity:.48}.teacher-workspace_lessonRow__Ezec2:hover .teacher-workspace_lessonDrag__LLlH5{opacity:1}.teacher-workspace_lessonDrag__LLlH5:hover{background:var(--surface-muted)}.teacher-workspace_lessonText__fF3X3{min-width:0;flex:1;overflow-wrap:anywhere}.teacher-workspace_lessonTitle__mMGGr{display:block;color:inherit}.teacher-workspace_lessonMeta__2ySWp{display:block;margin-top:3px;color:var(--text-muted);font-size:11px}.teacher-workspace_lessonDragging__9WiIq{opacity:.2;transform:scale(.985)}.teacher-workspace_addRow__8N2mz{padding:5px 10px 14px 38px}.teacher-workspace_addInput__aEyTh{width:100%;border-bottom:1px solid var(--line-muted);padding:8px 2px;background:transparent;color:var(--theme-ink);font-size:13px;outline:none}.teacher-workspace_addInput__aEyTh:focus{border-color:var(--theme-clay)}.teacher-workspace_addInput__aEyTh::-moz-placeholder{color:var(--text-muted)}.teacher-workspace_addInput__aEyTh::placeholder{color:var(--text-muted)}.teacher-workspace_addSection__t5_hC{padding:12px 18px 20px;border-top:1px solid var(--line-muted)}.teacher-workspace_mobileBar__8Y5R2{display:none}@media (max-width:1279px){.teacher-workspace_rail__zvSlD{width:292px}.teacher-workspace_reading__4SX87{padding:28px 30px 64px}}@media (max-width:1023px){.teacher-workspace_rail__zvSlD{display:none}.teacher-workspace_reading__4SX87{padding:24px 24px 52px}.teacher-workspace_mobileBar__8Y5R2{display:flex;justify-content:flex-end;border-bottom:1px solid var(--line-muted);padding:9px 16px;background:var(--surface-solid)}.teacher-workspace_mobileOutlineButton__8Wvhg{display:inline-flex;min-height:38px;align-items:center;gap:8px;border-radius:8px;padding:8px 10px;color:var(--theme-ink);font-size:14px;font-weight:600}.teacher-workspace_mobileOutlineButton__8Wvhg:hover{background:var(--surface-muted)}}@media (max-width:600px){.teacher-workspace_reading__4SX87{padding:22px 16px 44px}.teacher-workspace_lessonHeading__ZE6_k{font-size:26px}.teacher-workspace_editorToolbar__e9yyh{align-items:stretch}}@media (prefers-reduced-motion:reduce){.teacher-workspace_lessonRow__Ezec2,.teacher-workspace_stepCircle__KJLxQ{transition:none}}.learner_layout__rpC5f{--learn-header-height:90px;display:flex;min-height:calc(100svh - var(--learn-header-height));margin-bottom:-4rem;background:var(--theme-parchment)}.learner_main__p6LPU{flex:1;min-width:0}.learner_reading__DUACQ{max-width:880px;margin:0 auto;padding:28px 36px 64px}.learner_wide__UE_Eb{max-width:1160px}.learner_previewContext__Y0w_B{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px;padding:20px 24px;border:1px solid var(--line-muted);border-radius:20px;background:var(--surface-solid);color:var(--text-muted);font-size:14px;line-height:1.5}.learner_previewContext__Y0w_B>span{display:grid;gap:4px;min-width:0}.learner_previewContext__Y0w_B strong,.learner_previewLink__a2AYh{color:var(--theme-ink);font-weight:600}.learner_previewLink__a2AYh{display:inline-flex;align-items:center;justify-content:center;min-height:44px;flex-shrink:0;padding:10px 16px;border:1px solid var(--line-muted);border-radius:999px;text-align:center}.learner_previewLink__a2AYh:hover{background:var(--surface-muted);color:var(--theme-clay)}.learner_previewLink__a2AYh:focus-visible{outline:2px solid var(--theme-clay);outline-offset:3px}.learner_toolbar__L3O_Q{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.learner_breadcrumb__Mumx3{color:var(--text-muted);font-size:13px;line-height:1.5}.learner_toggle__AZqtH{display:inline-flex;align-items:center;gap:8px;flex-shrink:0;border-radius:6px;padding:8px 0;font-size:13px;color:var(--text-muted);background:transparent;cursor:pointer}.learner_title__0Kap3,.learner_toggle__AZqtH:hover{color:var(--theme-ink)}.learner_title__0Kap3{font-family:var(--font-display),Georgia,serif;font-size:clamp(24px,2.3vw,32px);line-height:1.3;font-weight:500;margin:0 0 22px;text-wrap:pretty}.learner_rail__z5Eyh{width:310px;flex-shrink:0;border-right:1px solid var(--line-muted);background:var(--surface-solid)}.learner_sidebar__9y2Ru{position:sticky;top:var(--learn-header-height);display:flex;flex-direction:column;max-height:calc(100svh - var(--learn-header-height))}.learner_sidebarMobile__wXnx9{max-height:64svh;overflow:auto}.learner_sidebarHeading__vzXXG{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 20px 12px;color:var(--theme-ink);font-size:15px;font-weight:600}.learner_courseLink__C0SFE{display:block;padding:0 20px 18px;font-size:13px;line-height:1.55;color:var(--text-muted)}.learner_courseLink__C0SFE:hover{color:var(--theme-ink)}.learner_sectionList__0epSW{overflow-y:auto;padding:0 10px 20px;scrollbar-width:thin}.learner_section___XTad{border-top:1px solid var(--line-muted)}.learner_sectionToggle__jX99O{display:flex;width:100%;align-items:flex-start;gap:10px;padding:16px 10px;text-align:left;color:var(--theme-ink);font-size:13px;font-weight:600;line-height:1.5;cursor:pointer}.learner_sectionToggle__jX99O>svg{flex-shrink:0;margin-top:3px;color:var(--text-muted)}.learner_sectionTitle__6_WA2{flex:1;min-width:0;overflow-wrap:anywhere}.learner_sectionMeta__sum5f{display:block;margin-top:4px;color:var(--text-muted);font-size:11px;font-weight:400}.learner_lessons__jQSoR{padding-bottom:10px;display:grid;gap:3px}.learner_lessons__jQSoR[hidden]{display:none}.learner_lesson__F3JyV{display:flex;align-items:flex-start;gap:10px;width:100%;padding:11px 10px;border-radius:8px;text-align:left;font-size:13px;line-height:1.5;color:var(--text-muted)}a.learner_lesson__F3JyV:hover,button.learner_lesson__F3JyV:hover{background:var(--surface-muted);color:var(--theme-ink)}.learner_active__FZl_7{background:color-mix(in srgb,var(--theme-clay) 12%,var(--surface-solid));box-shadow:inset 3px 0 var(--theme-clay);color:var(--theme-ink)}.learner_lessonIcon__R3Sp2{display:flex;width:18px;flex-shrink:0;justify-content:center;margin-top:3px}.learner_lessonBody__J1Ib2{min-width:0;flex:1;overflow-wrap:anywhere}.learner_lessonMeta__Qj71w{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:11px;color:var(--text-muted);margin-top:4px}.learner_active__FZl_7 .learner_lessonMeta__Qj71w{color:var(--theme-clay)}.learner_locked__LOs9j{color:var(--text-muted)}.learner_mobileNav__9EPwh{display:none;margin-bottom:24px;border:1px solid var(--line-soft);border-radius:12px;background:var(--surface-solid);overflow:hidden}.learner_mobileNav__9EPwh>summary{display:flex;align-items:center;gap:8px;padding:12px 14px;font-size:14px;font-weight:500;cursor:pointer;list-style:none}.learner_mobileNav__9EPwh>summary::-webkit-details-marker{display:none}.learner_mobileNav__9EPwh[open]>summary{border-bottom:1px solid var(--line-muted)}.learner_step__bRNYZ{margin-top:32px}.learner_task__qAibC{padding:0}.learner_task__qAibC .latorn-rich{font-size:1.05rem;line-height:1.7}.learner_task__qAibC .latorn-rich h1,.learner_task__qAibC .latorn-rich h2,.learner_task__qAibC .latorn-rich h3{font-size:1.25rem;line-height:1.45}.learner_task__qAibC>div>.latorn-rich .katex-display{font-size:1.25rem;margin:1.5rem 0}.learner_choiceGroup__i2fVV{border:0;min-width:0;padding:0}.learner_choiceLegend__PPGwz{padding:0;margin-bottom:10px;font-size:12px;color:var(--text-muted)}.learner_choiceList__ksizd{display:grid;gap:4px}.learner_choice__2_Otd{display:flex;cursor:pointer;align-items:flex-start;gap:12px;border:1px solid transparent;border-radius:8px;padding:12px 14px;background:transparent;transition:border-color .15s,background .15s}.learner_choice__2_Otd:hover{background:var(--surface-muted)}.learner_choiceSelected__ZtdMI{border-color:color-mix(in srgb,var(--theme-clay) 55%,transparent);background:color-mix(in srgb,var(--theme-clay) 9%,transparent)}.learner_choice__2_Otd input{margin-top:5px;width:17px;height:17px;flex-shrink:0;accent-color:var(--theme-clay)}.learner_choice__2_Otd .latorn-rich{font-size:1rem;line-height:1.6}.learner_choice__2_Otd .latorn-rich p{margin-bottom:.4rem}.learner_choice__2_Otd .latorn-rich>:last-child{margin-bottom:0}.learner_primary__in0bH{display:inline-flex;align-items:center;justify-content:center;min-height:42px;border:1px solid transparent;border-radius:9px;padding:10px 19px;background:var(--theme-ink);color:var(--theme-parchment);font-size:14px;font-weight:500;cursor:pointer;transition:opacity .15s}.learner_primary__in0bH:hover{opacity:.85}.learner_primary__in0bH:disabled{opacity:.5;cursor:wait}.learner_feedback__vEvZD{border-left:2px solid;padding:2px 0 2px 14px;font-size:14px;line-height:1.6}.learner_feedback__vEvZD p{margin:0}.learner_feedbackDetails__QsITj{margin-top:5px;color:var(--text-muted)}.learner_feedbackDetails__QsITj .latorn-rich{color:inherit;font-family:var(--font-sans);font-size:14px;line-height:1.65}.learner_history__i7HlB{margin-top:20px}.learner_historyToggle__x5Mv9{display:inline-flex;align-items:center;gap:10px;padding:6px 0;border-radius:3px;color:var(--text-muted);font-size:13px;cursor:pointer}.learner_historyToggle__x5Mv9:hover{color:var(--theme-ink)}.learner_historyList__XfjS9{margin-top:10px;border-top:1px solid var(--line-muted)}.learner_historyList__XfjS9>li{padding:16px 0;border-bottom:1px solid var(--line-muted)}.learner_stepNavigation__3HoLP{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:24px;margin-top:24px}.learner_nextStep__JXQvk,.learner_previousStep__cZejb{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:8px 0;border-radius:3px;font-size:14px;line-height:1.4;cursor:pointer}.learner_previousStep__cZejb{margin-right:auto;color:var(--text-muted)}.learner_nextStep__JXQvk{color:var(--theme-ink);font-weight:500}.learner_nextStep__JXQvk:hover,.learner_previousStep__cZejb:hover{color:var(--theme-clay)}.learner_nextStep__JXQvk:disabled{opacity:.5;cursor:wait}.learner_community__mQfEL{margin-top:28px}@media(max-width:1279px){.learner_rail__z5Eyh{width:280px}.learner_reading__DUACQ{padding:24px 26px 56px}}@media(max-width:1023px){.learner_rail__z5Eyh,.learner_toggle__AZqtH{display:none}.learner_mobileNav__9EPwh{display:block}.learner_reading__DUACQ{padding:24px 24px 48px}}@media(max-width:600px){.learner_reading__DUACQ{padding:20px 16px 40px}.learner_previewContext__Y0w_B{align-items:stretch;flex-direction:column;gap:14px;padding:16px;border-radius:16px}.learner_previewLink__a2AYh{flex-shrink:1}.learner_title__0Kap3{font-size:25px}.learner_choice__2_Otd{padding:12px 11px;gap:10px}.learner_task__qAibC .latorn-rich{font-size:1rem}.learner_choice__2_Otd .latorn-rich{font-size:.95rem}}@media(prefers-reduced-motion:reduce){.learner_choice__2_Otd,.learner_primary__in0bH{transition:none}}