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span[aria-hidden=true]{font-size:1.1rem;line-height:1}@media (width<=640px){.back-to-top{padding:12px;bottom:14px;right:14px}.back-to-top .btt-label{display:none}}.question{border:1px solid var(--border);background:var(--surface);border-radius:14px;margin-bottom:14px;padding:16px}.q-prompt{margin-bottom:12px;font-weight:700}.q-passage{background:var(--surface-2);border-left:4px solid var(--accent);color:var(--text);white-space:pre-line;border-radius:10px;margin-bottom:12px;padding:12px 14px;font-weight:500;line-height:1.6}.options{gap:10px;display:grid}.option{text-align:left;border:2px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:12px;padding:12px 14px;font-weight:600}.option:hover,.option.selected{border-color:var(--accent)}.option.correct{border-color:var(--good);background:color-mix(in srgb, var(--good) 16%, var(--surface))}.option.wrong{border-color:var(--bad);background:color-mix(in srgb, var(--bad) 16%, var(--surface))}.fill-input{border:2px 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