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var(--safe-bottom))}.a11y-settings-panel{inset-inline-start:max(12px,var(--safe-left));inset-inline-end:max(12px,var(--safe-right));width:auto;max-height:70vh;bottom:calc(72px + var(--safe-bottom))}}@media(max-width:640px){.a11y-settings-panel{bottom:calc(var(--mobile-toolbar-height) + 12px)}}:root.a11y-large-text{font-size:116%}:root.a11y-large-text body{line-height:1.7}:root.a11y-large-text .primary-btn,:root.a11y-large-text .secondary-btn,:root.a11y-large-text .option-btn,:root.a11y-large-text .tab-btn,:root.a11y-large-text .card,:root.a11y-large-text .panel{line-height:1.6}:root.a11y-simplified{--shadow: none;--panel: #111827;--panel-strong: #0f172a}:root.a11y-simplified *,:root.a11y-simplified *:before,:root.a11y-simplified *:after{text-shadow:none!important;box-shadow:none!important;background-image:none!important}:root.a11y-simplified .card,:root.a11y-simplified .panel,:root.a11y-simplified .hero,:root.a11y-simplified .sign-card,:root.a11y-simplified .lesson-signs-wrap,:root.a11y-simplified .quiz-card{background:var(--panel)!important;border-color:var(--line)!important}:root.a11y-reduced-motion *,:root.a11y-reduced-motion *:before,:root.a11y-reduced-motion *:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}:root.a11y-high-contrast{--bg: #000;--panel: #0b0b0b;--panel-strong: #000;--line: rgba(255, 255, 255, .72);--text: #fff;--muted: #dbe4ef;--accent: #ffea00;--accent-2: #c8ff46;--focus-ring: #fef08a;--focus-ring-shadow: rgba(254, 240, 138, .5)}:root.a11y-high-contrast body{background:#000!important;color:#fff!important}:root.a11y-high-contrast .panel,:root.a11y-high-contrast .card,:root.a11y-high-contrast .hero,:root.a11y-high-contrast .a11y-settings-panel,:root.a11y-high-contrast .keyboard-help-wrap,:root.a11y-high-contrast .voice-control-wrap{background:#0b0b0b!important;border-color:#ffffffbf!important}:root.a11y-high-contrast .secondary-btn,:root.a11y-high-contrast .option-btn,:root.a11y-high-contrast .tab-btn,:root.a11y-high-contrast .pill-btn{background:#111!important;color:#fff!important;border-color:#ffffffc2!important}:root.a11y-underline-links a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}.lesson-signs-wrap{display:grid;gap:14px;padding:14px;border-radius:18px;border:1px solid rgba(56,189,248,.2);background:linear-gradient(180deg,#1e293bb3,#0f172ab8)}.sign-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,280px));justify-content:start;gap:14px}.sign-card{display:grid;grid-template-rows:auto 1fr;gap:12px;padding:14px;border-radius:16px;border:1px solid rgba(148,163,184,.22);background:#0f172ad1;min-height:280px}.sign-card-media{display:flex;align-items:center;justify-content:center;min-height:132px;border-radius:14px;background:radial-gradient(circle at center,#ffffffeb,#f1f5f9fa);border:1px solid rgba(148,163,184,.28)}.sign-image{width:min(100%,132px);height:auto;max-height:118px;object-fit:contain}.sign-card-body{display:grid;gap:8px;align-content:start}.sign-card-body h5{margin:0;font-size:1.06rem;color:#f8fbff}.sign-category{display:inline-flex;width:fit-content;padding:4px 9px;border-radius:999px;font-size:.78rem;letter-spacing:.02em;color:#d6ecff;border:1px solid rgba(56,189,248,.35);background:#38bdf824}.sign-meaning,.sign-action{margin:0;color:#d5e4f8;line-height:1.45}.sign-meaning strong,.sign-action strong{color:#f1f6ff}.lesson-sign-quiz{display:grid;gap:12px}.lesson-official-links{margin-top:14px}.lesson-mini-quiz{display:grid;gap:12px;margin-top:14px;padding:14px;border-radius:16px;border:1px solid rgba(56,189,248,.2);background:#0f172ab8}.sign-quiz-card{display:grid;gap:12px}.sign-quiz-meta{display:grid;gap:8px}.sign-quiz-scoreline{font-size:.92rem}.sign-quiz-picture{display:flex;justify-content:center;align-items:center;min-height:220px}.sign-quiz-image{justify-self:center;width:min(100%,300px);max-height:260px;object-fit:contain}.sign-option-btn{display:flex;align-items:center;justify-content:space-between;gap:8px;text-align:left;min-height:56px}.sign-option-btn.correct{border-color:#22c55eb3;background:#22c55e2e}.sign-option-btn.incorrect{border-color:#fb7185b8;background:#fb71852e}.sign-answer-mark{font-weight:800;color:#bbf7d0}.sign-feedback.correct{border-color:#22c55e73;background:#22c55e24}.sign-feedback.wrong{border-color:#fb718580;background:#fb718524}.sign-image-warning{margin-top:-4px}.sign-quiz-actions{flex-wrap:wrap}.sign-option-btn:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.sign-tools{margin-bottom:14px}.sign-tools-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}@media(max-width:720px){.sign-grid{grid-template-columns:1fr}.sign-card{min-height:0}.sign-tools-grid{grid-template-columns:1fr}.sign-card-media{min-height:120px}.sign-quiz-picture{min-height:180px}.sign-quiz-image{max-height:210px}}@media(max-width:390px){.sign-card{padding:12px}.sign-card-media{min-height:110px}}