:root{--mq-user-bg:color-mix(in srgb, var(--text-strong) 6%, var(--surface));--mq-card-bg:var(--surface);--mq-hairline:color-mix(in srgb, var(--border) 80%, transparent);--mq-radius:14px;--mq-ease:var(--ease-brand,cubic-bezier(.22, 1, .36, 1));--mq-ok:var(--text-success);--mq-ok-bg:color-mix(in srgb, var(--success) 10%, var(--surface));--mq-bad:var(--text-danger);--mq-bad-bg:color-mix(in srgb, var(--danger) 8%, var(--surface))}@keyframes mq-rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes mq-fade{0%{opacity:0}to{opacity:1}}@keyframes mq-shimmer{0%{background-position:150% 0}to{background-position:-50% 0}}@keyframes mq-spin{to{transform:rotate(360deg)}}@keyframes mq-shake{0%,to{transform:none}20%{transform:translate(-5px)}40%{transform:translate(4px)}60%{transform:translate(-3px)}80%{transform:translate(2px)}}@keyframes mq-pop{0%{opacity:0;transform:scale(.6)}60%{opacity:1;transform:scale(1.15)}to{transform:scale(1)}}.mq-enter{animation:mq-rise .32s var(--mq-ease) both}.mq-msg,.mq-card{flex-shrink:0}.mq-msg{animation:mq-rise .32s var(--mq-ease) both}.mq-icon-btn{width:1.75rem;height:1.75rem;color:var(--text-faint);border-radius:8px;place-items:center;transition:background .15s,color .15s;display:inline-grid}.mq-icon-btn:hover{background:var(--mq-user-bg);color:var(--text-strong)}.mq-card{border:1px solid var(--border);border-radius:var(--mq-radius);background:var(--mq-card-bg);animation:mq-rise .34s var(--mq-ease) both;overflow:hidden;box-shadow:0 1px 2px rgba(56,55,53,.04)}.mq-card[data-state=wrong]{border-color:color-mix(in srgb, var(--danger) 45%, var(--border));animation:.42s both mq-shake}.mq-card[data-state=correct]{border-color:color-mix(in srgb, var(--success) 45%, var(--border));background:var(--mq-ok-bg)}.mq-card__head{color:var(--text-faint);letter-spacing:.04em;text-transform:uppercase;align-items:center;gap:.4rem;padding:.65rem .9rem 0;font-size:.6875rem;font-weight:700;display:flex}.mq-card__prompt{color:var(--text-strong);padding:.3rem .9rem .6rem;font-size:.875rem;font-weight:600;line-height:1.55}.mq-card__options{flex-direction:column;gap:.4rem;padding:0 .6rem .6rem;display:flex}.mq-option{border:1px solid var(--mq-hairline);text-align:left;width:100%;color:var(--text-strong);border-radius:10px;align-items:flex-start;gap:.6rem;padding:.55rem .6rem;font-size:.875rem;line-height:1.45;transition:background .15s,border-color .15s;display:flex}.mq-option:hover:not(:disabled){background:var(--mq-user-bg);border-color:var(--border)}.mq-option:focus-visible{border-color:var(--border-strong);outline:none}.mq-option[aria-checked=true],.mq-option[aria-pressed=true]{border-color:color-mix(in srgb, var(--accent-strong) 70%, var(--border));background:var(--accent-wash,var(--accent-soft))}.mq-option[data-verdict=correct]{border-color:color-mix(in srgb, var(--success) 50%, transparent);background:var(--mq-ok-bg)}.mq-option[data-verdict=wrong]{border-color:color-mix(in srgb, var(--danger) 40%, transparent);background:var(--mq-bad-bg)}.mq-option:disabled{cursor:default}.mq-key{border:1px solid var(--border);background:var(--surface);min-width:1.4rem;height:1.4rem;color:var(--text-muted);border-bottom-width:2px;border-radius:6px;flex-shrink:0;place-items:center;padding:0 .3rem;font-family:inherit;font-size:.6875rem;font-weight:700;display:inline-grid}.mq-option[aria-checked=true] .mq-key,.mq-option[aria-pressed=true] .mq-key{border-color:var(--accent-strong);background:var(--accent);color:var(--accent-text)}.mq-check{border:1.5px solid var(--border-strong);background:var(--surface);width:1.15rem;height:1.15rem;color:var(--accent-text);border-radius:5px;flex-shrink:0;place-items:center;margin-top:.1rem;transition:background .15s,border-color .15s;display:inline-grid}.mq-option[aria-checked=true] .mq-check{border-color:var(--accent-strong);background:var(--accent)}.mq-option[aria-checked=true] .mq-check svg{animation:mq-pop .25s var(--mq-ease) both}.mq-blank-text{color:var(--text-strong);padding:.3rem .9rem .6rem;font-size:.875rem;line-height:2.1}.mq-blank{align-items:baseline;gap:.2rem;margin:0 .15rem;display:inline-flex}.mq-blank input{border:none;border-bottom:1.5px dashed var(--border-strong);width:7.5rem;max-width:100%;color:var(--text-strong);font:inherit;text-align:center;background:0 0;border-radius:0;outline:none;padding:.1rem .35rem;font-weight:600;transition:border-color .15s}.mq-blank input:focus{border-bottom-style:solid;border-bottom-color:var(--accent-strong)}.mq-blank__unit{color:var(--text-muted);font-size:.8125rem}.mq-card__foot{border-top:1px solid var(--mq-hairline);background:color-mix(in srgb, var(--surface-muted) 70%, transparent);align-items:center;gap:.5rem;padding:.55rem .9rem;display:flex}.mq-card__hint{min-width:0;color:var(--text-faint);flex:1;font-size:.75rem}.mq-card__verdict{flex:1;align-items:center;gap:.4rem;min-width:0;font-size:.8125rem;font-weight:600;display:flex}.mq-card__verdict svg{animation:mq-pop .3s var(--mq-ease) both}.mq-card__verdict[data-ok=true]{color:var(--mq-ok)}.mq-card__verdict[data-ok=false]{color:var(--text-muted)}.mq-card__error{color:var(--mq-bad);padding:0 .9rem .6rem;font-size:.75rem;font-weight:600}.mq-btn{background:var(--surface-inverse);height:2rem;color:var(--text-on-inverse);border-radius:999px;align-items:center;gap:.4rem;padding:0 .85rem;font-size:.8125rem;font-weight:600;transition:opacity .15s,transform .15s;display:inline-flex}.mq-btn:hover:not(:disabled){opacity:.9}.mq-btn:active:not(:disabled){transform:scale(.97)}.mq-btn:disabled{opacity:.35;cursor:default}.mq-btn--ghost{color:var(--text-muted);border:1px solid var(--border);background:0 0}.mq-btn kbd{background:color-mix(in srgb, currentColor 16%, transparent);border-radius:4px;place-items:center;min-width:1.2rem;height:1.1rem;padding:0 .25rem;font-family:inherit;font-size:.625rem;font-weight:700;display:inline-grid}.mq-tool{height:1.85rem;color:var(--text-muted);white-space:nowrap;border-radius:999px;flex-shrink:0;align-items:center;gap:.3rem;padding:0 .6rem;font-size:.75rem;font-weight:600;transition:background .15s,color .15s;display:inline-flex}.mq-tool:hover:not(:disabled){background:var(--mq-user-bg);color:var(--text-strong)}.mq-tool:disabled{opacity:.4}@media (prefers-reduced-motion:reduce){.mq-enter,.mq-msg,.mq-card,.mq-card__verdict svg,.mq-option[aria-checked=true] .mq-check svg,.mq-card[data-state=wrong]{animation:none}}.duckling-chat-panel .learn-chat-thread{gap:1.1rem;padding:1rem 1.1rem .75rem}.duckling-chat-panel__composer{padding:.25rem .75rem .6rem}