.a11y-panel-overlay{position:fixed;inset:0;z-index:10034;background:rgba(15,23,42,.65);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;transition:opacity .2s}.a11y-panel-overlay.is-open{opacity:1;pointer-events:auto}.a11y-panel-card{background:#fff;color:#0f172a;border-radius:14px;padding:22px 26px;max-width:440px;width:100%;box-shadow:0 30px 80px -10px rgba(0,0,0,.5);font:14px/1.55 -apple-system,sans-serif;transform:translateY(8px);transition:transform .2s}.a11y-panel-overlay.is-open .a11y-panel-card{transform:translateY(0)}[data-theme="dark"] .a11y-panel-card{background:#1e293b;color:#f1f5f9}.a11y-panel-card h3{margin:0 0 14px;font-size:18px;font-weight:800}.a11y-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid #e2e8f0}[data-theme="dark"] .a11y-row{border-bottom-color:#334155}.a11y-row:last-of-type{border-bottom:none}.a11y-row-label{display:flex;flex-direction:column;gap:2px}.a11y-row-label strong{font-weight:700}.a11y-row-label small{color:#64748b;font-size:11px}html body .a11y-row-label small{font-size:16px!important;text-transform:none!important;letter-spacing:0!important;line-height:1.35}[data-theme="dark"] .a11y-row-label small{color:#94a3b8}.a11y-toggle{position:relative;width:42px;height:24px;background:#cbd5e1;border-radius:12px;border:0;cursor:pointer;transition:background .18s}.a11y-toggle::after{content:'';position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .18s;box-shadow:0 1px 3px rgba(0,0,0,.25)}.a11y-toggle.is-on{background:#7c3aed}.a11y-toggle.is-on::after{transform:translateX(18px)}.a11y-close{margin-top:14px;padding:8px 14px;border-radius:8px;border:0;cursor:pointer;background:#7c3aed;color:#fff;font:600 13px/1 -apple-system;width:100%}body.high-contrast{background:#fff!important;color:#000!important}body.high-contrast .page,body.high-contrast main,body.high-contrast article.block,body.high-contrast .hero{background:#fff!important;color:#000!important;border-color:#000!important}body.high-contrast a,body.high-contrast a:visited{color:#0000ee!important;text-decoration:underline!important}body.high-contrast button,body.high-contrast .ib-theme-toggle,body.high-contrast .bookmark-btn,body.high-contrast .reveal-toggle-btn,body.high-contrast .self-assess-btn{border:2px solid #000!important;background:#fff!important;color:#000!important}body.high-contrast button:hover,body.high-contrast button:focus{background:#ffd000!important;color:#000!important;outline:3px solid #000!important}body.high-contrast :focus-visible{outline:4px solid #ff6600!important;outline-offset:2px!important}body.high-contrast .opt.ok{background:#00aa00!important;color:#fff!important}body.high-contrast .opt.no{background:#cc0000!important;color:#fff!important}body.high-contrast h1,body.high-contrast h2,body.high-contrast h3{color:#000!important}body.high-contrast[data-theme="dark"]{background:#fff!important;color:#000!important}.tts-playlist-fab{position:fixed;bottom:90px;right:14px;z-index:10018;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#7c3aed,#06b6d4);color:#fff;border:0;cursor:pointer;font:18px/1 -apple-system;box-shadow:0 8px 20px -4px rgba(124,58,237,.5);display:inline-flex;align-items:center;justify-content:center;transition:transform .15s}.tts-playlist-fab:hover{transform:scale(1.08)}.tts-playlist-fab.is-playing{background:linear-gradient(135deg,#dc2626,#f59e0b);animation:tts-pulse 1.6s ease-in-out infinite}@keyframes tts-pulse{0%,100%{box-shadow:0 8px 20px -4px rgba(220,38,38,.5)}50%{box-shadow:0 12px 28px -2px rgba(220,38,38,.7)}}@media (prefers-reduced-motion:reduce){.tts-playlist-fab.is-playing{animation:none}}.tts-playlist-progress{position:fixed;bottom:148px;right:14px;z-index:10018;background:rgba(15,23,42,.92);color:#fff;padding:6px 12px;border-radius:999px;font:600 11px/1 -apple-system;display:none}.tts-playlist-progress.is-visible{display:inline-flex;align-items:center;gap:6px}@media (max-width:720px){.tts-playlist-fab{display:none}.tts-playlist-progress{bottom:90px;right:8px}}