._picker_xse8t_1{align-items:center;gap:var(--spacing-2xs);color:var(--color-text-muted);display:inline-flex}._picker_xse8t_1:hover{color:var(--color-primary)}._icon_xse8t_12{flex-shrink:0;width:1.15rem;height:1.15rem}._control_xse8t_18{padding:var(--spacing-3xs) var(--spacing-2xs);border:var(--border-width-thin) solid transparent;border-radius:var(--radius-sm);color:inherit;font-size:var(--font-size-sm);cursor:pointer;background-color:#0000}._control_xse8t_18:hover{border-color:var(--color-border);background-color:var(--color-surface-muted)}._logo_2j6y1_1{align-items:center;gap:var(--spacing-xs);color:var(--color-primary-strong);text-decoration:none;display:inline-flex}._mark_2j6y1_9{flex-shrink:0;width:1.6rem;height:1.6rem}._markEmpty_2j6y1_15{fill:var(--color-surface);stroke:var(--color-primary-strong);stroke-width:4px}._markFilled_2j6y1_21{fill:var(--color-visual-fill);stroke:var(--color-primary-strong);stroke-width:4px}._image_2j6y1_27{object-fit:contain;width:1.6rem;height:1.6rem}._name_2j6y1_33{font-family:var(--font-family-heading);font-size:var(--font-size-lg);font-weight:var(--font-weight-bold);letter-spacing:-.01em}._large_2j6y1_40 ._mark_2j6y1_9,._large_2j6y1_40 ._image_2j6y1_27{width:2.4rem;height:2.4rem}._large_2j6y1_40 ._name_2j6y1_33{font-size:var(--font-size-2xl)}@media print{._logo_2j6y1_1{color:#000}._markEmpty_2j6y1_15{fill:#fff;stroke:#000}._markFilled_2j6y1_21{fill:#a8a8a8;stroke:#000}}._footer_rsvih_1{background-color:var(--color-surface)}._inner_rsvih_5{justify-content:space-between;align-items:center;gap:var(--spacing-sm);width:100%;max-width:var(--screen-content-width);padding:var(--spacing-md) var(--spacing-lg) var(--spacing-xl);border-top:var(--border-width-thin) solid var(--color-border);font-size:var(--font-size-sm);color:var(--color-text-subtle);flex-wrap:wrap;margin:0 auto;display:flex}@media print{._footer_rsvih_1{background:0 0}._inner_rsvih_5{max-width:none;padding:var(--spacing-sm) 0 0;border-top-color:var(--color-rule);color:#000}}._bar_1iia9_1{gap:var(--spacing-lg);padding:var(--spacing-sm) var(--spacing-lg);background-color:var(--color-surface);border-bottom:var(--border-width-thin) solid var(--color-border);display:flex}._inner_1iia9_9{align-items:center;gap:var(--spacing-lg);width:100%;max-width:var(--screen-content-width);margin:0 auto;display:flex}._brand_1iia9_18{margin-right:var(--spacing-md);padding-right:var(--spacing-md);border-right:var(--border-width-thin) solid var(--color-border);align-items:center;display:flex}._trailing_1iia9_27{margin-left:auto}._link_1iia9_31{color:var(--color-text-muted);padding:var(--spacing-2xs) 0;border-bottom:var(--border-width-medium) solid transparent;text-decoration:none}._link_1iia9_31:hover{color:var(--color-primary)}._current_1iia9_42{color:var(--color-primary-strong);border-bottom-color:var(--color-primary)}._button_1dawx_1{justify-content:center;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-lg);border:var(--border-width-thin) solid transparent;border-radius:var(--radius-md);font-size:var(--font-size-md);font-weight:var(--font-weight-medium);cursor:pointer;transition:background-color var(--transition-fast), border-color var(--transition-fast);display:inline-flex}._button_1dawx_1:disabled{opacity:.5;cursor:not-allowed}._primary_1dawx_22{background-color:var(--color-primary);color:var(--color-text-inverse)}._primary_1dawx_22:hover:not(:disabled){background-color:var(--color-primary-strong)}._secondary_1dawx_31{background-color:var(--color-surface);border-color:var(--color-border-strong);color:var(--color-text)}._secondary_1dawx_31:hover:not(:disabled){background-color:var(--color-surface-muted)}._quiet_1dawx_41{color:var(--color-primary);background-color:#0000}._quiet_1dawx_41:hover:not(:disabled){background-color:var(--color-primary-soft)}._modal_obpnu_1{width:min(28rem, calc(100vw - var(--spacing-xl)));padding:var(--spacing-xl);border:var(--border-width-thin) solid var(--color-border);border-radius:var(--radius-lg);background-color:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-md)}._modal_obpnu_1::backdrop{background-color:#1f293373}._content_obpnu_15{gap:var(--spacing-md);flex-direction:column;display:flex}._title_obpnu_21{font-family:var(--font-family-heading);font-size:var(--font-size-xl);color:var(--color-primary-strong)}._form_ds7jn_1{gap:var(--spacing-md);flex-direction:column;display:flex}._description_ds7jn_7{line-height:var(--line-height-relaxed);color:var(--color-text-muted)}._actions_ds7jn_12{justify-content:flex-end;display:flex}._card_mj697_1{background-color:var(--color-surface);border:var(--border-width-thin) solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-lg);break-inside:avoid;page-break-inside:avoid}@media print{._card_mj697_1{border-color:var(--color-rule);padding:var(--spacing-md) 0;border-left:none;border-right:none;border-radius:0}}._title_olrrf_1{align-items:baseline;gap:var(--spacing-sm);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-2xs);border-bottom:var(--border-width-medium) solid var(--color-primary-soft);break-after:avoid;page-break-after:avoid;display:flex}._text_olrrf_12{font-family:var(--font-family-heading);font-size:var(--font-size-xl);color:var(--color-primary-strong)}._hint_olrrf_18{font-size:var(--font-size-sm);color:var(--color-text-muted)}@media print{._title_olrrf_1{border-bottom-color:var(--color-rule)}._text_olrrf_12,._hint_olrrf_18{color:#000}}._page_yjg72_1{width:100%;max-width:var(--screen-content-width);padding:var(--spacing-xl) var(--spacing-lg) var(--spacing-3xl);background-color:var(--color-surface);min-height:100%;margin:0 auto}._content_yjg72_10{gap:var(--spacing-2xl);flex-direction:column;display:flex}@media print{._page_yjg72_1{background:0 0;width:auto;max-width:none;padding:0}._content_yjg72_10{gap:var(--spacing-lg)}}._text_p74sr_1{line-height:var(--line-height-relaxed);color:var(--color-text-muted)}._details_p74sr_6{gap:var(--spacing-2xs);font-size:var(--font-size-sm);color:var(--color-text-subtle);flex-direction:column;display:flex}@media print{._text_p74sr_1,._details_p74sr_6{color:#000}}._welcome_1ypii_1{gap:var(--spacing-sm);padding:var(--spacing-xl);background-color:var(--color-primary-soft);border-radius:var(--radius-lg);break-inside:avoid;page-break-inside:avoid;flex-direction:column;display:flex}._brand_1ypii_12{margin-bottom:var(--spacing-2xs)}._greeting_1ypii_16{font-family:var(--font-family-heading);font-size:var(--font-size-2xl);color:var(--color-primary-strong)}._message_1ypii_22{line-height:var(--line-height-relaxed);max-width:44rem}._institution_1ypii_27{font-size:var(--font-size-sm);color:var(--color-text-muted)}@media print{._welcome_1ypii_1{padding:0 0 var(--spacing-md);border-bottom:var(--border-width-medium) solid var(--color-rule);background:0 0;border-radius:0}._greeting_1ypii_16,._institution_1ypii_27{color:#000}}._chapters_an1a6_1{gap:var(--spacing-xl);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}._chapter_an1a6_1{gap:var(--spacing-xs);flex-direction:column;display:flex}._description_an1a6_16{color:var(--color-text-muted)}._lessons_an1a6_20{gap:var(--spacing-sm);margin:var(--spacing-sm) 0 0;flex-direction:column;padding:0;list-style:none;display:flex}._lesson_an1a6_20{justify-content:space-between;align-items:baseline;gap:var(--spacing-md);padding:var(--spacing-sm) 0;border-bottom:var(--border-width-thin) solid var(--color-border);display:flex}._lessonTitle_an1a6_38{font-weight:var(--font-weight-medium)}._lessonObjective_an1a6_42{font-size:var(--font-size-sm);color:var(--color-text-muted);display:block}._link_an1a6_48{color:var(--color-primary);white-space:nowrap}@media print{._chapter_an1a6_1,._lesson_an1a6_20{break-inside:avoid;page-break-inside:avoid}._description_an1a6_16,._lessonObjective_an1a6_42{color:#000}._link_an1a6_48{display:none}._lesson_an1a6_20{border-bottom-color:var(--color-rule)}}._eyebrow_14rtq_1{font-size:var(--font-size-sm);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-subtle)}._description_14rtq_8{color:var(--color-text-muted);line-height:var(--line-height-relaxed)}._lessons_14rtq_13{gap:var(--spacing-md);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}._lesson_14rtq_13{justify-content:space-between;align-items:baseline;gap:var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:var(--border-width-thin) solid var(--color-border);break-inside:avoid;page-break-inside:avoid;display:flex}._title_14rtq_33{font-weight:var(--font-weight-medium)}._objective_14rtq_37{font-size:var(--font-size-sm);color:var(--color-text-muted);display:block}._meta_14rtq_43{font-size:var(--font-size-xs);color:var(--color-text-subtle);display:block}._link_14rtq_49{color:var(--color-primary);white-space:nowrap}@media print{._eyebrow_14rtq_1,._description_14rtq_8,._objective_14rtq_37,._meta_14rtq_43{color:#000}._lesson_14rtq_13{border-bottom-color:var(--color-rule)}._link_14rtq_49{display:none}}._fraction_xgy2v_1{vertical-align:middle;line-height:var(--line-height-tight);font-family:var(--font-family-math);break-inside:avoid;page-break-inside:avoid;flex-direction:column;align-items:center;display:inline-flex}._term_xgy2v_12{padding:0 var(--spacing-2xs);text-align:center;min-width:1ch;display:block}._rule_xgy2v_19{width:100%;min-width:1.5ch;height:var(--fraction-rule-thickness);margin:var(--fraction-gap) 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var(--answer-line-color);font-family:var(--font-family-math);font-size:var(--font-size-lg);text-align:center;background-color:#0000}._lineSmall_1rism_21{width:var(--answer-line-width-small)}._unit_1rism_25{color:var(--color-text-muted)}._fractionInput_1rism_29{align-items:center;gap:var(--fraction-gap);flex-direction:column;display:inline-flex}._fractionRule_1rism_36{width:3.5rem;height:var(--fraction-rule-thickness);background-color:var(--color-rule)}._options_1rism_42{gap:var(--spacing-md);border:none;flex-wrap:wrap;margin:0;padding:0;display:flex}._option_1rism_42{align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-md);border:var(--border-width-thin) solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;display:inline-flex}._option_1rism_42:hover{background-color:var(--color-surface-muted)}._legend_1rism_65{font-size:var(--font-size-sm);color:var(--color-text-muted);padding:0}@media print{._line_1rism_10{width:var(--answer-line-width-large)}._option_1rism_42{border-color:var(--color-rule)}}._visual_pe8g0_1{align-items:center;gap:var(--spacing-xs);break-inside:avoid;page-break-inside:avoid;flex-direction:column;display:flex}._caption_pe8g0_10{font-size:var(--font-size-sm);color:var(--color-text-muted);text-align:center}._circle_pe8g0_16{width:9rem;height:9rem;display:block}._slice_pe8g0_22{fill:var(--color-visual-empty);stroke:var(--color-rule);stroke-width:2px}._sliceFilled_pe8g0_30{fill:var(--color-visual-fill)}._bar_pe8g0_34{border:var(--border-width-medium) solid var(--color-rule);border-radius:var(--radius-sm);gap:0;display:grid;overflow:hidden}._part_pe8g0_42{border-right:var(--border-width-thin) solid var(--color-rule);background-color:var(--color-visual-empty);min-width:1.75rem;min-height:1.75rem}._part_pe8g0_42:last-child{border-right:none}._partFilled_pe8g0_53{background-color:var(--color-visual-fill)}._line_pe8g0_57{width:100%;max-width:24rem;display:block}._axis_pe8g0_63,._tick_pe8g0_64{stroke:var(--color-rule);stroke-width:1px}._mark_pe8g0_69{stroke:var(--color-primary);stroke-width:2.5px}._grid_pe8g0_74{border:var(--border-width-medium) solid var(--color-rule);grid-template-columns:repeat(10,1fr);display:grid}._cell_pe8g0_80{border:var(--border-width-thin) solid var(--color-border);background-color:var(--color-visual-empty);width:1.1rem;height:1.1rem}._cellFilled_pe8g0_87{background-color:var(--color-visual-fill)}@media print{._sliceFilled_pe8g0_30,._partFilled_pe8g0_53,._cellFilled_pe8g0_87{fill:#a8a8a8;background-color:#a8a8a8}._mark_pe8g0_69{stroke:#000}._caption_pe8g0_10{color:#000}}._body_10yqm_1{align-items:center;gap:var(--spacing-lg);margin:var(--spacing-md) 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var(--color-border);break-inside:avoid;page-break-inside:avoid;flex-direction:column;list-style:none;display:flex}._header_wwsvs_12{align-items:baseline;gap:var(--spacing-sm);display:flex}._number_wwsvs_18{font-family:var(--font-family-heading);font-weight:var(--font-weight-bold);color:var(--color-primary-strong)}._badge_wwsvs_24{padding:var(--spacing-3xs) var(--spacing-xs);border-radius:var(--radius-pill);background-color:var(--color-surface-muted);font-size:var(--font-size-2xs);letter-spacing:.06em;text-transform:uppercase;color:var(--color-text-muted)}._challenge_wwsvs_34{background-color:var(--color-accent-soft);color:var(--color-accent)}._review_wwsvs_39{background-color:var(--color-info-soft);color:var(--color-info)}._pending_wwsvs_50{padding:var(--spacing-lg) var(--spacing-md);border:var(--border-width-thick) solid var(--color-correction);border-radius:var(--radius-md);background-color:var(--color-correction-soft)}._correction_wwsvs_57{background-color:var(--color-correction);color:var(--color-text-inverse)}._hint_wwsvs_62{margin-top:var(--spacing-xs);font-size:var(--font-size-sm);color:var(--color-text-muted)}._hintLabel_wwsvs_68{font-weight:var(--font-weight-medium);color:var(--color-info)}@media print{._exercise_wwsvs_1{break-inside:avoid;page-break-inside:avoid;padding:var(--spacing-md) 0;border-bottom-color:var(--color-rule)}._number_wwsvs_18,._hintLabel_wwsvs_68{color:#000}._badge_wwsvs_24{border:var(--border-width-thin) solid var(--color-rule);color:#000;background:0 0}._pending_wwsvs_50{padding:var(--spacing-md) 0;border:none;border-bottom:var(--border-width-thin) solid var(--color-rule);background:0 0;border-radius:0}}._list_1yfr8_1{margin:0;padding:0;list-style:none}._notice_z881x_1{gap:var(--spacing-2xs);padding:var(--spacing-md) var(--spacing-lg);border-left:var(--border-width-thick) solid;border-radius:var(--radius-md);break-inside:avoid;page-break-inside:avoid;flex-direction:column;display:flex}._label_z881x_12{font-size:var(--font-size-xs);font-weight:var(--font-weight-bold);letter-spacing:.08em;text-transform:uppercase}._tip_z881x_19{background-color:var(--color-info-soft);border-color:var(--color-info)}._tip_z881x_19 ._label_z881x_12{color:var(--color-info)}._mistake_z881x_28{background-color:var(--color-warning-soft);border-color:var(--color-warning)}._mistake_z881x_28 ._label_z881x_12{color:var(--color-warning)}._challenge_z881x_37{background-color:var(--color-accent-soft);border-color:var(--color-accent)}._challenge_z881x_37 ._label_z881x_12{color:var(--color-accent)}._summary_z881x_46{background-color:var(--color-success-soft);border-color:var(--color-success)}._summary_z881x_46 ._label_z881x_12{color:var(--color-success)}._correction_z881x_55{background-color:var(--color-correction-soft);border-color:var(--color-correction)}._correction_z881x_55 ._label_z881x_12{color:var(--color-correction)}@media print{._notice_z881x_1{border:var(--border-width-thin) solid var(--color-rule);border-left-width:var(--border-width-thick);background:0 0}._label_z881x_12{color:#000}}._theory_k9vzz_1{gap:var(--spacing-lg);flex-direction:column;display:flex}._paragraph_k9vzz_7{line-height:var(--line-height-relaxed)}._highlight_k9vzz_11{justify-content:center;align-items:center;gap:var(--spacing-xl);padding:var(--spacing-lg);background-color:var(--color-surface-muted);border-radius:var(--radius-lg);break-inside:avoid;page-break-inside:avoid;display:flex}._labels_k9vzz_23{gap:var(--spacing-sm);font-size:var(--font-size-sm);color:var(--color-text-muted);flex-direction:column;display:flex}._table_k9vzz_31{border-collapse:collapse;width:100%}._table_k9vzz_31 th,._table_k9vzz_31 td{padding:var(--spacing-xs) var(--spacing-sm);border:var(--border-width-thin) solid var(--color-border);text-align:left}._table_k9vzz_31 th{background-color:var(--color-surface-muted)}@media print{._highlight_k9vzz_11{border:var(--border-width-thin) solid var(--color-rule);background:0 0}._labels_k9vzz_23{color:#000}._table_k9vzz_31 th{font-weight:var(--font-weight-bold);background:0 0}._table_k9vzz_31 th,._table_k9vzz_31 td{border-color:var(--color-rule)}}._example_18md4_1{gap:var(--spacing-sm);flex-direction:column;display:flex}._problem_18md4_7{font-weight:var(--font-weight-medium)}._calculation_18md4_11{font-family:var(--font-family-math);font-size:var(--font-size-lg);padding:var(--spacing-xs) var(--spacing-md);background-color:var(--color-surface-muted);border-radius:var(--radius-md);align-self:flex-start}._answer_18md4_20{font-weight:var(--font-weight-medium);color:var(--color-success)}._label_18md4_25{font-size:var(--font-size-xs);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-subtle)}._explanation_18md4_32{color:var(--color-text-muted)}@media print{._example_18md4_1{break-inside:avoid;page-break-inside:avoid}._answer_18md4_20,._explanation_18md4_32,._label_18md4_25{color:#000}._calculation_18md4_11{border:var(--border-width-thin) solid var(--color-rule);background:0 0}}._header_1xmbk_1{gap:var(--spacing-xs);padding-bottom:var(--spacing-md);border-bottom:var(--border-width-thick) solid var(--color-primary);break-after:avoid;page-break-after:avoid;flex-direction:column;display:flex}._eyebrow_1xmbk_11{font-size:var(--font-size-sm);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-subtle)}._objective_1xmbk_18{color:var(--color-text-muted)}._meta_1xmbk_22{font-size:var(--font-size-sm);color:var(--color-text-subtle)}@media 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._place_uaga4_26{width:4rem;font-family:var(--font-family-heading);font-weight:var(--font-weight-bold);color:var(--color-primary-strong)}._board_uaga4_5 ._points_uaga4_33{text-align:right;font-variant-numeric:tabular-nums;font-weight:var(--font-weight-medium)}._field_13rb0_1{gap:var(--spacing-2xs);flex-direction:column;display:flex}._label_13rb0_7{font-weight:var(--font-weight-medium)}._control_13rb0_11{padding:var(--spacing-xs) var(--spacing-sm);border:var(--border-width-thin) solid 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