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(width<=28rem){.quiz-tools{flex-basis:100%;justify-content:flex-end;margin-block-start:var(--space-1)}}.quiz-tool{block-size:2.75rem;inline-size:2.75rem;min-inline-size:2.75rem;font-size:var(--text-sm);color:var(--color-fg-muted);cursor:pointer;transition:color var(--motion-fast) var(--easing-out), background-color var(--motion-fast) var(--easing-out);background:0 0;border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;display:inline-flex}.quiz-tool:hover{color:var(--color-fg);background:var(--color-surface-2)}.quiz-tool:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.quiz-tool[aria-pressed=true]{color:var(--color-accent);background:var(--color-accent-soft)}.btn--primary{background:var(--color-accent);color:var(--color-accent-fg);border:1px solid var(--color-accent);cursor:pointer;min-block-size:44px}.btn--primary:hover:not(:disabled){filter:brightness(1.08)}.btn--primary:active:not(:disabled){filter:brightness(.94)}.btn--primary:disabled{opacity:.4;cursor:not-allowed}.btn--secondary{background:var(--color-accent-soft);color:var(--color-accent);cursor:pointer;border:1px solid #0000;min-block-size:44px}.btn--secondary:hover:not(:disabled){background:color-mix(in srgb, var(--color-accent-soft) 80%, var(--color-accent))}.btn--secondary:disabled{opacity:.4;cursor:not-allowed}.btn--ghost{color:var(--color-fg-muted);border:1px solid var(--color-border);cursor:pointer;align-items:center;gap:var(--space-2);background:0 0;min-block-size:44px;display:inline-flex}.btn--ghost:hover:not(:disabled){background:var(--color-bg);color:var(--color-fg);border-color:var(--color-border-strong)}.btn--ghost:disabled{opacity:.4;cursor:not-allowed}.btn--ghost input[type=checkbox]{accent-color:var(--color-accent);block-size:16px;inline-size:16px}.btn--primary:focus-visible,.btn--secondary:focus-visible,.btn--ghost:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.quiz-banner{justify-content:space-between;align-items:center;gap:var(--space-3);padding-block:var(--space-3);padding-inline:var(--space-4);border-radius:var(--radius-md);font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.04em;margin-block-end:var(--space-4);display:flex}.quiz-banner--exam{background:var(--color-fg);color:var(--color-bg)}.quiz-banner__label{font-weight:var(--weight-bold)}.quiz-banner__timer{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:var(--text-md);font-weight:var(--weight-bold)}.quiz-timed{align-items:center;gap:var(--space-3);margin-block-end:var(--space-4);display:flex}.quiz-timed__count{font-family:var(--font-mono);font-size:var(--text-xs);font-variant-numeric:tabular-nums;color:var(--color-fg-muted);min-inline-size:2.5rem}.quiz-timed__track{background:var(--color-surface-2);border-radius:var(--radius-pill);flex:1;block-size:.25rem;overflow:hidden}.quiz-timed__fill{background:var(--color-accent);block-size:100%;transition:inline-size .9s linear;display:block}.quiz-progress{background:var(--color-surface-2);border-radius:var(--radius-pill);block-size:.125rem;margin-block-end:var(--space-4);overflow:hidden}.quiz-progress__fill{background:var(--color-accent);block-size:100%;transition:inline-size var(--motion-base) var(--easing-out);display:block}.quiz-note{border-inline-start:2px solid var(--color-warn);padding-block:var(--space-3);padding-inline:var(--space-4);font-family:var(--font-body);font-size:var(--text-sm);line-height:var(--leading-body);color:var(--color-fg-muted);background:color-mix(in srgb, var(--color-warn) 6%, transparent);border-radius:var(--radius-sm);cursor:pointer;text-align:start;unicode-bidi:plaintext}.quiz-image{object-fit:contain;border:1px solid var(--color-border);border-radius:var(--radius-md);block-size:auto;max-block-size:18rem;inline-size:100%;max-inline-size:100%;margin-block:var(--space-4);cursor:zoom-in;display:block}.quiz-wrong-reason{margin-block-start:var(--space-4)}.quiz-wrong-reason__label{font-family:var(--font-body);font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-danger);margin-block-end:var(--space-2);display:block}.quiz-wrong-reason__row{gap:var(--space-2);flex-wrap:wrap;display:flex}.quiz-difficulty{align-items:center;gap:var(--space-2);flex-wrap:wrap;margin-block-start:var(--space-4);display:flex}.quiz-difficulty__label{font-family:var(--font-body);font-size:var(--text-xs);letter-spacing:.04em;text-transform:uppercase;color:var(--color-fg-subtle)}.quiz-aux{border:1px solid var(--color-border);border-radius:var(--radius-md);padding-block:var(--space-5);padding-inline:var(--space-6);background:var(--color-surface);margin-block-start:var(--space-4)}.quiz-aux__title{font-family:var(--font-display);font-size:var(--text-md);font-weight:var(--weight-bold);letter-spacing:-.005em;color:var(--color-fg);margin:0 0 var(--space-3);display:block}.quiz-aux__body{font-family:var(--font-body);font-size:var(--text-sm);line-height:var(--leading-body);color:var(--color-fg);text-align:start;unicode-bidi:plaintext}.quiz-distractor{border:1px solid var(--color-border);border-radius:var(--radius-sm);padding-block:var(--space-3);padding-inline:var(--space-4);font-family:var(--font-body);font-size:var(--text-sm);line-height:var(--leading-body);text-align:start;background:var(--color-surface);unicode-bidi:plaintext}.quiz-distractor+.quiz-distractor{margin-block-start:var(--space-2)}.quiz-distractor[data-state=correct]{border-color:var(--color-success)}.quiz-distractor[data-state=wrong]{border-color:var(--color-danger)}.quiz-distractor__head{font-weight:var(--weight-medium);margin-block-end:var(--space-1)}.quiz-stats{gap:var(--space-4);border-block-start:1px solid var(--color-border);font-family:var(--font-mono);font-size:var(--text-xs);color:var(--color-fg-subtle);letter-spacing:.04em;flex-wrap:wrap;margin-block-start:var(--space-4);padding-block-start:var(--space-4);display:flex}.quiz-source{align-items:center;gap:var(--space-2);direction:ltr;unicode-bidi:isolate;flex-wrap:wrap;margin-block-start:var(--space-3);display:flex}.quiz-source__label{font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:.04em;color:var(--color-fg-subtle)}.quiz-teachback__input{resize:vertical;min-block-size:4rem;inline-size:100%;font-family:var(--font-body);font-size:var(--text-sm);line-height:var(--leading-body);padding:var(--space-3);background:var(--color-surface);color:var(--color-fg);border:1px solid var(--color-border);border-radius:var(--radius-sm);text-align:start;unicode-bidi:plaintext}.quiz-teachback__input:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}body.dark,[data-theme=dark] body,body[data-theme=dark]{--color-bg:#0e0e10;--color-surface:#18181b;--color-surface-2:#1f1f22;--color-border:#2a2a2e;--color-border-strong:#44444a;--color-fg:#f1f0eb;--color-fg-muted:#b6b5ad;--color-fg-subtle:#7c7b73;--color-accent-soft:#2a234a}body.study{--color-bg:#1a1008;--color-surface:#221508;--color-surface-2:#2a1e0d;--color-border:#3d2a12;--color-border-strong:#7a5c30;--color-fg:#e8d5b0;--color-fg-muted:#c4a374;--color-fg-subtle:#a08060;--color-accent:#c48a3a;--color-accent-fg:#1a1008;--color-accent-soft:#2a1e0d}.quiz-image-wrap{text-align:center;margin-block:var(--space-4);position:relative}.quiz-image{border-radius:var(--radius-md);border:1px solid var(--color-border);cursor:zoom-in;max-block-size:18rem;max-inline-size:100%}.quiz-image-remove{color:#fff;cursor:pointer;background:#0009;border:none;border-radius:50%;justify-content:center;align-items:center;block-size:44px;inline-size:44px;font-size:.75rem;line-height:1;display:inline-flex;position:absolute;inset-block-start:.25rem;inset-inline-end:.25rem}.quiz-image-dep{padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);font-size:var(--text-xs);color:#92400e;align-items:center;gap:var(--space-2);unicode-bidi:plaintext;background:#fef3c7;border:1px solid #fcd34d;margin-block-start:var(--space-2);display:flex}.quiz-image-dep button{font-size:var(--text-xs);color:#fff;border-radius:var(--radius-sm);cursor:pointer;background:#d97706;border:none;flex:none;padding:.2rem .6rem}body.dark .quiz-image-dep,body.study .quiz-image-dep{background:color-mix(in srgb, #fef3c7 20%, var(--color-surface));color:#fde68a;border-color:#d97706}.quiz-image-attach{align-items:center;gap:var(--space-2);margin-block:var(--space-3);display:flex}.quiz-image-upload{font-size:var(--text-xs);padding:var(--space-2) var(--space-4);background:var(--color-surface-2);color:var(--color-fg-muted);border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer}.quiz-image-upload:hover{background:var(--color-surface);color:var(--color-fg)}.quiz-image-status{font-size:var(--text-xs);color:var(--color-fg-subtle)}