.study-landing-shell[data-v-4178bb6f]{display:flex;flex-direction:column;gap:var(--study-workspace-header-gap);height:100vh;height:100dvh;min-height:0;overflow:hidden;padding:var(--study-workspace-header-gap) 16px 16px;background:var(--study-workspace-canvas)}.study-landing-shell[data-v-4178bb6f]>header{flex:0 0 auto}.study-landing-shell[data-v-4178bb6f]>main{flex:1;min-height:0;min-width:0;overflow:hidden}@media (max-width: 640px){.study-landing-shell[data-v-4178bb6f]{padding:var(--study-workspace-header-gap) 0 env(safe-area-inset-bottom,0px)}}.account-menu-profile[data-v-5fa37b99],.account-menu-item[data-v-5fa37b99]{display:flex;width:calc(100% - 1rem);min-height:44px;align-items:center;gap:12px;border-radius:var(--radius-control-inner);padding:8px 12px;text-align:left;transition:background-color .15s ease,color .15s ease}.account-menu-profile[data-v-5fa37b99]{justify-content:space-between;cursor:pointer}.account-menu-profile[data-v-5fa37b99]:hover,.account-menu-item[data-v-5fa37b99]:hover{background:var(--edu-surface-page);transform:none}.account-menu-profile[data-v-5fa37b99]:focus-visible,.account-menu-item[data-v-5fa37b99]:focus-visible{outline:2px solid var(--edu-resource-question-fill);outline-offset:2px}.account-menu-item[data-v-5fa37b99]{cursor:pointer}.account-menu-label[data-v-5fa37b99]{color:var(--edu-text-body);font-size:15px;line-height:22px;font-weight:400}.account-menu-item--destructive[data-v-5fa37b99]:hover{background:var(--edu-surface-card);color:var(--edu-state-error-text)}.account-menu-icon[data-v-5fa37b99],.account-menu-chevron[data-v-5fa37b99]{display:inline-block;flex-shrink:0;background:currentColor}.account-menu-icon[data-v-5fa37b99]{width:20px;height:22px;flex:0 0 20px;color:var(--edu-text-body);-webkit-mask-size:17px 17px;mask-size:17px 17px;transform:translateY(1px)}.account-menu-chevron[data-v-5fa37b99]{width:14px;height:20px;color:var(--edu-text-muted)}.account-menu-divider[data-v-5fa37b99]{height:1px;margin:8px 16px;background:var(--edu-surface-page)}.study-mobile-navigation[data-v-02305651]{display:none}@media (max-width: 640px){.study-mobile-navigation[data-v-02305651]{display:block;width:100%}.study-mobile-navigation__trigger[data-v-02305651]{display:flex;width:100%;min-height:44px;justify-content:space-between;align-items:center;gap:12px;padding:0 14px;border:1px solid var(--edu-border-decorative);border-radius:var(--radius-control-inner);background:var(--edu-surface-page);color:var(--edu-text-primary);font:inherit;font-size:14px;font-weight:700;text-align:left;cursor:pointer}.study-mobile-navigation__trigger[data-v-02305651]:focus-visible{outline:2px solid var(--edu-focus-ring);outline-offset:2px}h2[data-v-02305651]{margin:4px 12px;color:var(--edu-text-muted);font-size:12px;font-weight:650}section+section[data-v-02305651]{border-top:1px solid var(--edu-border-decorative);margin-top:8px;padding-top:12px}.study-header-menu-item[data-v-02305651]{justify-content:space-between}.study-header-menu-item[aria-current=page][data-v-02305651]{background:var(--edu-study-navigation-selected)}}.study-header-tabs[data-v-13db9d31]{display:flex;width:min(456px,39vw);min-width:0;align-items:center;gap:4px;padding:3px;border:1px solid var(--edu-border-decorative);border-radius:var(--radius-control);background:var(--edu-study-navigation-surface)}.study-header-tabs__item[data-v-13db9d31]{display:inline-flex;flex:1 1 0;justify-content:center;min-height:var(--study-header-tab-height);align-items:center;padding:0 10px;border:1px solid transparent;border-radius:var(--radius-control-inner);background:transparent;color:var(--text-secondary);font:inherit;font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap;cursor:pointer}.study-header-tabs__item[data-v-13db9d31]:hover{background:var(--edu-study-navigation-selected);color:var(--text-heading)}.study-header-tabs__item.is-active[data-v-13db9d31]{border-color:var(--tab-ink, var(--border-strong));background:var(--tab-fill, var(--edu-surface-card));color:var(--edu-text-primary);font-weight:800;box-shadow:0 4px 0 var(--tab-ink, var(--border-strong))}.study-header-tabs__item[data-tone=question-bank][data-v-13db9d31]{--tab-ink: var(--edu-resource-question-strong);--tab-fill: var(--edu-resource-question-fill)}.study-header-tabs__item[data-tone=concept][data-v-13db9d31]{--tab-ink: var(--edu-resource-concept-strong);--tab-fill: var(--edu-resource-concept-fill)}.study-header-tabs__item[data-tone=mastery][data-v-13db9d31]{--tab-ink: var(--edu-resource-mastery-strong);--tab-fill: var(--edu-resource-mastery-fill)}.study-header-tabs__item[data-tone=practice][data-v-13db9d31]{--tab-ink: var(--edu-resource-practice-strong);--tab-fill: var(--edu-resource-practice-fill)}.study-header-tabs__item[data-tone=documents][data-v-13db9d31]{--tab-ink: var(--edu-resource-documents-strong);--tab-fill: var(--edu-resource-documents-soft)}.study-header-tabs__item[data-v-13db9d31]:focus-visible{outline:2px solid var(--edu-focus-ring);outline-offset:-2px}.study-header-tabs__mobile-label[data-v-13db9d31]{display:none}@media (max-width: 1023px){.study-header-tabs[data-v-13db9d31]{width:-moz-max-content;width:max-content}}@media (max-width: 640px){.study-header-tabs[data-v-13db9d31]{width:100%;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;gap:4px;border:0;background:transparent;border-radius:0;padding:2px}.study-header-tabs[data-v-13db9d31]::-webkit-scrollbar{display:none}.study-header-tabs__item[data-v-13db9d31]{flex:0 0 auto;padding-inline:12px;font-size:13px}.study-header-tabs__label[data-v-13db9d31]{display:none}.study-header-tabs__mobile-label[data-v-13db9d31]{display:inline}}.study-navigation-desktop[data-v-2ccaa15a]{display:contents}.library-topbar .library-topbar__mobile-back[data-v-2ccaa15a]{display:none}.library-topbar__primary[data-v-2ccaa15a]{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);min-height:var(--study-header-row-height);width:100%;align-items:center;-moz-column-gap:12px;column-gap:12px;padding-inline:24px}.library-topbar__course[data-v-2ccaa15a]{grid-column:1;grid-row:1}.library-topbar__account[data-v-2ccaa15a]{grid-column:3;grid-row:1;justify-self:end}.library-topbar__resource-navigation[data-v-2ccaa15a]{grid-column:2;grid-row:1;min-width:0;justify-self:center}.library-topbar__resource-navigation[data-v-2ccaa15a] .study-header-navigation{position:relative;display:flex;min-width:0;align-items:center;justify-content:center;gap:var(--study-header-navigation-gap)}@media (min-width: 1024px){.library-topbar__resource-navigation[data-v-2ccaa15a] .study-section-menu{position:absolute;left:calc(100% + var(--study-header-navigation-gap))}}@media (max-width: 1023px){.library-topbar__primary[data-v-2ccaa15a]{grid-template-columns:minmax(0,1fr) auto;grid-template-rows:var(--study-header-row-height);padding-inline:16px}.library-topbar__account[data-v-2ccaa15a]{grid-column:2}.library-topbar__resource-navigation[data-v-2ccaa15a]{grid-column:1 / -1;grid-row:2;min-height:var(--study-header-row-height);display:flex;align-items:center;justify-content:center;width:100%}}.library-topbar[data-v-2ccaa15a]{--study-header-row-height: 56px;--study-header-tab-height: 36px;--study-header-control-height: calc(var(--study-header-tab-height) + 8px);--study-header-navigation-gap: 16px;--header-ink: var(--edu-brand-primary);--header-gold: color-mix(in srgb, var(--edu-resource-mastery-fill) 60%, var(--edu-surface-card));position:sticky;top:0;width:100%;flex:0 0 auto;border:1px solid var(--edu-border-decorative);border-radius:var(--radius-shell);background-color:var(--edu-surface-card);box-shadow:0 6px 20px rgb(var(--edu-text-primary-rgb) / .04)}.library-topbar__brand[data-v-2ccaa15a],.library-topbar__brand>span[data-v-2ccaa15a],.course-header-switch>span[data-v-2ccaa15a],.course-selection-header__current[data-v-2ccaa15a]{color:var(--header-ink)}.library-topbar__brand[data-v-2ccaa15a]:hover{background:rgb(var(--edu-surface-card-rgb) / .5)}.subject-course-picker[data-v-2ccaa15a]{display:flex;align-items:center;width:auto}.course-path-divider[data-v-2ccaa15a]{color:var(--text-muted);font-weight:400}.course-selection-header[data-v-2ccaa15a]{display:flex;align-items:center;flex-wrap:nowrap;min-width:0;gap:0 14px}.course-selection-header__current[data-v-2ccaa15a]{white-space:nowrap;overflow-x:auto;max-width:100%;display:inline-flex;align-items:center;gap:2px;min-height:44px;background:transparent;border:0;cursor:pointer;padding-inline:8px;border-radius:var(--radius-control-inner);line-height:24px;color:var(--text-heading);font-size:14px;font-weight:800}.course-selection-header__current[data-v-2ccaa15a]:hover{background:var(--bg-muted-light)}@media (min-width: 640px){.course-selection-header__current[data-v-2ccaa15a]{font-size:15px}}.subject-course-picker .course-header-switch[data-v-2ccaa15a]{min-width:44px;gap:8px;padding-inline:8px;border-radius:var(--radius-control-inner);background:transparent;transition:background-color var(--motion-fast),border-color var(--motion-fast)}.subject-course-picker .course-header-switch[data-v-2ccaa15a]:hover{border-color:transparent;background:var(--bg-muted-light)}.subject-course-picker>.course-header-switch[data-v-2ccaa15a]{max-width:100%;overflow-x:auto;justify-content:flex-start;text-align:left;white-space:nowrap}.subject-course-picker>.course-header-switch>span[data-v-2ccaa15a]{flex:0 1 auto;display:block;max-width:100%;min-width:0;overflow:hidden;text-overflow:clip;white-space:nowrap}.subject-course-picker__chevron[data-v-2ccaa15a]{width:15px;height:15px;flex:0 0 auto;color:var(--edu-text-muted)}.course-popover__selector[data-v-2ccaa15a]{padding:0 4px 4px;min-height:0}.course-popover__selector[data-v-2ccaa15a] .course-selector__header{flex-basis:44px}.course-popover__selector[data-v-2ccaa15a] .course-selector__spaces{gap:2px;padding-top:8px}.course-popover__selector[data-v-2ccaa15a] .course-space{border:0;box-shadow:none;border-radius:var(--radius-control-inner)}.course-popover__selector[data-v-2ccaa15a] .course-space:hover{background:var(--edu-surface-page)}.course-popover__selector[data-v-2ccaa15a] .course-space__copy strong{font-size:14px;font-weight:650}.course-popover__selector[data-v-2ccaa15a] .course-space__copy small{margin-top:3px}.course-popover__selector[data-v-2ccaa15a] .course-selector__add{border:0;border-top:1px solid var(--border-soft);border-radius:0;box-shadow:none}@media (min-width: 641px){.subject-course-picker[data-v-2ccaa15a] .study-header-popover__bridge{left:0;width:min(460px,calc(100vw - 32px))}}@media (max-width: 640px){.library-topbar[data-v-2ccaa15a]{border:0;border-radius:0;box-shadow:none;--study-header-tab-height: 44px;--study-header-navigation-gap: 8px}.study-navigation-desktop[data-v-2ccaa15a],.library-topbar__brand[data-v-2ccaa15a]{display:none}.library-topbar .library-topbar__mobile-back[data-v-2ccaa15a]{display:inline-flex}.library-topbar .premium-chip[data-v-2ccaa15a]{display:none}.library-topbar__course[data-v-2ccaa15a]{gap:4px}.library-topbar__resource-navigation[data-v-2ccaa15a]{padding-block:4px}.library-topbar__resource-navigation[data-v-2ccaa15a] .study-header-navigation{width:100%;justify-content:flex-start}.library-topbar__resource-navigation[data-v-2ccaa15a] .study-header-tabs{flex:1 1 0}.library-topbar__account[data-v-2ccaa15a]{gap:4px}.course-header-switch[data-v-2ccaa15a]{width:100%}.course-header-switch>span[data-v-2ccaa15a]:first-child{overflow:hidden;text-overflow:ellipsis}.course-selection-header__current[data-v-2ccaa15a]{padding-left:0;border-left:0}.library-topbar__primary[data-v-2ccaa15a]{padding-inline:12px;padding-top:env(safe-area-inset-top)}.subject-course-picker>.course-header-switch[data-v-2ccaa15a]{min-height:44px}.course-selection-header[data-v-2ccaa15a]{gap:0 10px}.library-topbar .topbar-action-chip[data-v-2ccaa15a]{min-width:44px;width:44px;padding:0}.premium-chip__label[data-v-2ccaa15a]{display:none}}.premium-chip[data-v-2ccaa15a]{gap:7px;padding:0 13px;border:1px solid color-mix(in srgb,var(--edu-resource-mastery-strong) 22%,var(--edu-resource-mastery-fill));border-radius:var(--radius-control-inner);background:linear-gradient(115deg,var(--edu-resource-mastery-soft),var(--header-gold),var(--edu-resource-course-soft));background-size:180% 100%;background-position:0% 50%;color:var(--header-ink);box-shadow:inset 0 1px rgb(var(--edu-surface-card-rgb) / .7),0 2px 6px rgb(var(--edu-resource-mastery-strong-rgb) / .08);transition:background-position .28s ease,border-color .18s ease,box-shadow .18s ease}.topbar-action-chip[data-v-2ccaa15a]{min-height:40px;min-width:104px}.premium-chip[data-v-2ccaa15a]:hover:not(:disabled){border-color:color-mix(in srgb,var(--edu-resource-mastery-strong) 40%,var(--edu-resource-mastery-fill));background-position:100% 50%;box-shadow:inset 0 1px rgb(var(--edu-surface-card-rgb) / .7),0 3px 10px rgb(var(--edu-resource-mastery-strong-rgb) / .14)}.premium-chip[data-v-2ccaa15a] .edu-button__icon,.premium-chip__badge[data-v-2ccaa15a]{width:20px;height:20px}.premium-chip__badge[data-v-2ccaa15a]{color:var(--header-ink);stroke-width:1.8}.premium-chip__label[data-v-2ccaa15a]{font-size:12px;font-weight:750}@media (max-width: 640px){.library-topbar .topbar-action-chip[data-v-2ccaa15a]{min-height:44px}}@media (prefers-reduced-motion: reduce){.premium-chip[data-v-2ccaa15a]{transition:none}}