._header_f7ab728{transition:background-color .18s}._focusVeil_f7ab728{z-index:80;background:var(--bg-app);pointer-events:none;opacity:0;transition:opacity .18s;position:absolute;inset:0}._root_f7ab728[data-mode-transition] ._focusVeil_f7ab728{opacity:1;pointer-events:auto}._examModeButton_f7ab728{border:1px solid color-mix(in srgb, var(--brand-accent) 40%, var(--border-default));background:color-mix(in srgb, var(--brand-accent) 12%, var(--bg-panel));color:color-mix(in srgb, var(--brand-accent) 75%, var(--text-strong))}._examModeButton_f7ab728:hover{background:color-mix(in srgb, var(--brand-accent) 20%, var(--bg-panel))}._examModeButton_f7ab728:focus-visible{outline:2px solid var(--brand-accent);outline-offset:3px}._tutorShell_f7ab728{opacity:0;visibility:hidden;flex-shrink:0;width:0;min-height:0;transition:width .3s cubic-bezier(.22,1,.36,1),opacity .22s,transform .3s cubic-bezier(.22,1,.36,1),visibility .3s;display:flex;overflow:hidden;transform:translate(24px)}._tutorShell_f7ab728[data-open=true]{width:calc(var(--tutor-width) + 6px);opacity:1;visibility:visible;transform:none}._tutorShell_f7ab728[data-resizing=true]{transition:opacity .22s}._tutorInner_f7ab728{height:100%;width:var(--tutor-width);background:var(--bg-app);flex-shrink:0;overflow:hidden}@media (max-width:767px){._tutorShell_f7ab728,._tutorShell_f7ab728[data-open=true]{z-index:100;width:100vw;height:100dvh;transition:transform .3s cubic-bezier(.22,1,.36,1),opacity .22s,visibility .3s;position:fixed;inset:0;transform:translate(100%)}._tutorShell_f7ab728[data-open=true]{transform:none}._tutorInner_f7ab728{width:100vw}}@media (prefers-reduced-motion:reduce){._header_f7ab728,._focusVeil_f7ab728,._tutorShell_f7ab728,._tutorShell_f7ab728[data-open=true],._tutorShell_f7ab728[data-resizing=true]{transition:none}}@media print{._focusVeil_f7ab728,._tutorShell_f7ab728{display:none!important}}._builder_90d7726{--subject-tone:#0d3b66;--paper-tone:#216b72;--topic-tone:#a36518;--selection-accent:var(--subject-tone);--topic-ink:color-mix(in srgb, var(--topic-tone) 65%, var(--text-strong))}._subjectStage_90d7726{--selection-accent:var(--subject-tone)}._paperStage_90d7726{--selection-accent:var(--paper-tone)}._topicStage_90d7726{--selection-accent:var(--topic-tone)}._stage_90d7726,._blueprint_90d7726{--selection-ink:color-mix(in srgb, var(--selection-accent) 65%, var(--text-strong));--selection-solid:var(--selection-accent)}._stage_90d7726{border-top:2px solid color-mix(in srgb, var(--selection-accent) 75%, var(--border-default))}._step_90d7726{color:#fff;background:var(--selection-accent);border:1px solid var(--selection-accent)}._selected_90d7726{background:color-mix(in srgb, var(--selection-accent) 5%, var(--bg-panel));border-color:color-mix(in srgb, var(--selection-accent) 90%, var(--border-default));box-shadow:0 0 0 1px color-mix(in srgb, var(--selection-accent) 45%, transparent)}._iconSelected_90d7726,._checkSelected_90d7726{background:var(--selection-solid);border-color:var(--selection-solid);color:#fff}._dot_90d7726{background:var(--selection-solid)}._topicToggle_90d7726{color:var(--selection-ink);background:color-mix(in srgb, var(--selection-accent) 12%, var(--bg-panel));border-color:color-mix(in srgb, var(--selection-accent) 35%, var(--border-default))}._topicToggle_90d7726:hover{background:color-mix(in srgb, var(--selection-accent) 20%, var(--bg-panel))}._ink_90d7726{color:var(--selection-ink)}._topicInk_90d7726{color:var(--topic-ink)}@media (prefers-color-scheme:dark){._builder_90d7726{--subject-tone:#4a91c9;--paper-tone:#3c9b9a;--topic-tone:#c79545}._step_90d7726,._iconSelected_90d7726,._checkSelected_90d7726{color:#0b1724}._selected_90d7726{background:color-mix(in srgb, var(--selection-accent) 10%, var(--bg-panel))}}._navigationFrame_90d7726{z-index:60;transition:opacity .18s,transform .18s;position:sticky;top:0}._navigationFrame_90d7726[data-exam-focused=true]{opacity:0;pointer-events:none;transform:translateY(-6px)}._historyOverlay_90d7726{inset:var(--app-nav-height) 0 0;z-index:50;visibility:hidden;pointer-events:none;transition:visibility .28s;position:fixed;overflow:hidden}._historyBackdrop_90d7726{opacity:0;transition:opacity .24s}._historyDrawer_90d7726{opacity:0;transition:transform .28s cubic-bezier(.22,1,.36,1),opacity .22s;transform:translate(100%)}._historyOverlay_90d7726[data-open=true]{visibility:visible;pointer-events:auto}._historyOverlay_90d7726[data-open=true] ._historyBackdrop_90d7726{opacity:1}._historyOverlay_90d7726[data-open=true] ._historyDrawer_90d7726{opacity:1;transform:none}@media (prefers-reduced-motion:reduce){._navigationFrame_90d7726,._historyOverlay_90d7726,._historyBackdrop_90d7726,._historyDrawer_90d7726{transition:none}}