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solid var(--ui-border)}.theme-control{background:var(--ui-input);color:var(--ui-text);border:1px solid var(--ui-border)}.theme-control:hover{background:var(--ui-neutral-hover)}.siteShell{flex-direction:column;min-height:100vh;display:flex}.previewEnvironmentBanner{z-index:200;color:#fff;letter-spacing:.12em;text-align:center;background:#8b1e1e;padding:6px 16px;font-size:.8rem;font-weight:800;position:relative}.siteMain{flex:1}.siteHeader{z-index:100;background:color-mix(in srgb, var(--ui-surface) 96%, transparent);border-bottom:1px solid var(--ui-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);grid-template-columns:auto 1fr auto;align-items:center;gap:24px;min-height:72px;padding:12px clamp(16px,3vw,44px);display:grid;position:sticky;top:0;box-shadow:0 4px 20px #1720330d}.siteLogo{width:fit-content;color:var(--ui-text);border-radius:12px;align-items:center;gap:10px;font-weight:700;display:flex}.siteLogo:focus-visible{outline:3px solid 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var(--ui-accent);font:inherit;cursor:pointer;border-radius:10px;padding:11px 18px;font-weight:650}.accountBillingForm button:hover{background:var(--ui-accent-hover)}.accountBillingForm button:focus-visible{outline:3px solid var(--ui-focus);outline-offset:2px}@media (max-width:600px){.accountBillingForm{grid-template-columns:minmax(0,1fr)}.accountBillingForm button{width:100%}}.accountPasswordForm{gap:10px;max-width:440px;display:grid}.accountPasswordForm p{margin:0 0 8px}.accountPasswordForm label{font-weight:600}.accountPasswordForm input{border:1px solid var(--ui-border);background:var(--ui-input);width:100%;min-width:0;color:var(--ui-text);border-radius:10px;padding:12px}.accountPasswordForm input:focus-visible{outline:3px solid var(--ui-focus);outline-offset:2px}.accountPasswordForm button,.accountSecondaryButton{border:1px solid var(--ui-border);cursor:pointer;border-radius:10px;width:fit-content;max-width:100%;padding:11px 18px;font-weight:650}.accountPasswordForm 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var(--ui-focus);outline-offset:2px}.quizError{color:var(--ui-danger-text);background:var(--ui-danger);border-radius:10px;margin:0;padding:14px 16px}.quizRecentSessions{border-top:1px solid var(--ui-border);gap:14px;padding-top:28px;display:grid}.quizRecentSessions h2,.quizRecentEmpty{margin:0}.quizRecentSessions h2{color:var(--ui-text);font-size:1.25rem}.quizRecentEmpty{color:var(--ui-muted)}.quizRecentList{grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr));gap:10px;display:grid}.quizRecentItem{background:var(--ui-surface-alt);color:var(--ui-muted);border:1px solid var(--ui-border);text-align:left;cursor:pointer;border-radius:12px;gap:5px;padding:14px 16px;display:grid}.quizRecentItem:hover{background:var(--ui-neutral-hover);border-color:var(--ui-accent)}.quizRecentItem:focus-visible{outline:3px solid var(--ui-focus);outline-offset:2px}.quizRecentSummary{color:var(--ui-text);font-weight:800}.quizRecentItem time{font-size:.875rem}.quizTextLink{width:fit-content;color:var(--ui-accent);font-weight:700;text-decoration:none}.quizTextLink:hover{text-decoration:underline}.quizTextLink:focus-visible{outline:3px solid var(--ui-focus);outline-offset:3px;border-radius:4px}.quizHistory{border-radius:18px;gap:24px;padding:30px;display:grid}.quizHistoryHeader{border-bottom:1px solid var(--ui-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-bottom:18px;display:flex}.quizHistoryHeader h1,.quizHistoryHeader p,.quizHistoryEmpty{margin:0}.quizHistoryHeader h1{color:var(--ui-text)}.quizHistoryEmpty{color:var(--ui-muted)}.quizHistoryList{gap:10px;display:grid}.quizHistoryItem{background:var(--ui-surface-alt);min-width:0;color:var(--ui-muted);border:1px solid var(--ui-border);border-radius:12px;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) auto;align-items:center;gap:8px 18px;padding:14px 16px;text-decoration:none;display:grid}.quizHistoryItem:hover{background:var(--ui-neutral-hover);border-color:var(--ui-accent)}.quizHistoryItem:focus-visible{outline:3px solid var(--ui-focus);outline-offset:2px}.quizHistoryItem time{text-align:right;font-size:.875rem}@media (max-width:760px){.quizHistoryItem{grid-template-columns:1fr}.quizHistoryItem time{text-align:left}}.quizStats{border-top:1px solid var(--ui-border);gap:18px;padding-top:28px;display:grid}.quizStats h2,.quizStats h3,.quizStats p,.quizStats dl,.quizStats dd{margin:0}.quizStats h2{color:var(--ui-text);font-size:1.25rem}.quizStatsEmpty{color:var(--ui-muted)}.quizStatsGrid{grid-template-columns:repeat(auto-fit,minmax(min(130px,100%),1fr));gap:10px;display:grid}.quizStatsGrid>div{background:var(--ui-surface-alt);border:1px solid var(--ui-border);border-radius:12px;gap:4px;min-width:0;padding:14px;display:grid}.quizStatsGrid dt,.quizSubjectStatsItem span{color:var(--ui-muted);font-size:.875rem}.quizStatsGrid dd{color:var(--ui-text);font-size:1.35rem;font-weight:800}.quizSubjectStats{gap:10px;display:grid}.quizSubjectStats h3{color:var(--ui-text);font-size:1rem}.quizSubjectStatsList{gap:8px;display:grid}.quizSubjectStatsItem{min-width:0;color:var(--ui-text);border-bottom:1px solid var(--ui-border);flex-wrap:wrap;justify-content:space-between;gap:6px 16px;padding:10px 0;display:flex}.quizSubjectStatsItem span{overflow-wrap:anywhere}.quizPrimaryButton,.quizSecondaryButton,.quizCheckButton,.quizTextButton{cursor:pointer;border-radius:10px;min-height:44px;padding:10px 18px;font-weight:700}.quizPrimaryButton{background:var(--ui-accent);width:fit-content;color:var(--ui-accent-text);border:1px solid var(--ui-accent);align-items:center;text-decoration:none;display:inline-flex}.quizPrimaryButton:hover:not(:disabled){background:var(--ui-accent-hover);border-color:var(--ui-accent-hover)}.quizSecondaryButton{background:var(--ui-surface-alt);color:var(--ui-text);border:1px solid var(--ui-border)}.quizSecondaryButton:hover:not(:disabled){background:var(--ui-neutral-hover)}.quizCheckButton{background:var(--ui-accent-secondary);color:var(--ui-accent-secondary-text);border:1px solid var(--ui-accent-secondary)}.quizCheckButton:hover:not(:disabled){background:var(--ui-accent-secondary-hover);border-color:var(--ui-accent-secondary-hover)}.quizTextButton{min-height:auto;color:var(--ui-accent);background:0 0;border:0;padding:7px 10px}.quizTextButton:hover{background:var(--ui-neutral-hover)}.quizPrimaryButton:focus-visible,.quizSecondaryButton:focus-visible,.quizCheckButton:focus-visible,.quizTextButton:focus-visible{outline:3px solid var(--ui-focus);outline-offset:2px}.quizPrimaryButton:disabled,.quizSecondaryButton:disabled,.quizCheckButton:disabled{opacity:.5;cursor:not-allowed}.quizRunner{border-radius:18px;padding:30px}.quizRunnerHeader,.quizRunnerNavigation{justify-content:space-between;align-items:center;gap:16px;display:flex}.quizRunnerHeader{border-bottom:1px solid var(--ui-border);margin-bottom:30px;padding-bottom:18px}.quizRunnerHeader p{color:var(--ui-muted);margin:0;font-weight:700}.quizQuestionMeta{color:var(--ui-muted);flex-wrap:wrap;justify-content:space-between;gap:10px;margin-bottom:16px;font-size:.9rem;font-weight:700;display:flex}.quizQuestionText{color:var(--ui-text);margin:0 0 28px;font-size:clamp(1.15rem,1.5vw,1.5rem);font-weight:600;line-height:1.4}.quizQuestionImages{grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:16px;margin-bottom:28px;display:grid}.quizQuestionImage{object-fit:contain;border-radius:10px;width:100%;max-width:100%;height:auto;display:block}.quizAnswerList{border:0;gap:12px;margin:0;padding:0;display:grid}.quizAnswerOption{background:var(--ui-input);min-height:58px;color:var(--ui-text);border:1px solid var(--ui-border);cursor:pointer;border-radius:12px;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:12px 16px;display:grid}.quizAnswerOption:not(:has(input:disabled)):hover{background:var(--ui-neutral-hover);border-color:var(--ui-accent)}.quizAnswerOption:has(input:checked:not(:disabled)){background:var(--ui-surface-alt);border-color:var(--ui-accent);box-shadow:0 0 0 2px var(--ui-focus)}.quizAnswerOption input{accent-color:var(--ui-accent);margin:0}.quizAnswerOption:focus-within{outline:3px solid var(--ui-focus);outline-offset:2px}.quizAnswerOption:has(input:disabled){cursor:default}.quizAnswerOption[data-result=correct]{background:var(--quiz-correct-bg);color:var(--quiz-correct-text);border:2px solid var(--quiz-correct-border);box-shadow:none}.quizAnswerOption[data-result=incorrect]{background:var(--quiz-incorrect-bg);color:var(--quiz-incorrect-text);border:2px solid var(--quiz-incorrect-border);box-shadow:none}.quizAnswerLetter{background:var(--ui-surface-alt);width:32px;height:32px;color:var(--ui-accent);border:1px solid var(--ui-border);border-radius:8px;place-items:center;font-weight:900;display:grid}.quizAnswerOption:has(input:checked:not(:disabled)) .quizAnswerLetter{background:var(--ui-accent);color:var(--ui-accent-text);border-color:var(--ui-accent)}.quizAnswerOption[data-result=correct] .quizAnswerLetter{background:var(--ui-surface-alt);color:var(--quiz-correct-border);border-color:var(--quiz-correct-border)}.quizAnswerOption[data-result=incorrect] .quizAnswerLetter{background:var(--ui-surface-alt);color:var(--quiz-incorrect-border);border-color:var(--quiz-incorrect-border)}.quizAnswerStatus{justify-self:end;font-size:.85rem;font-weight:800}.quizAnswerOption[data-result=correct] .quizAnswerStatus{color:var(--quiz-correct-border)}.quizAnswerOption[data-result=incorrect] .quizAnswerStatus{color:var(--quiz-incorrect-border)}.quizFamilyDrillActions{margin-top:20px}.quizFamilyDrillActions 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