.practice-card[data-astro-cid-smr754dv]{background:var(--bg-card, #ffffff);border:1px solid var(--border-light, #e2e8f0);border-radius:var(--radius-md, 16px);padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 2px 8px #0000000a;transition:transform .2s ease,box-shadow .2s ease}.practice-card[data-astro-cid-smr754dv]:hover{box-shadow:0 4px 14px #0000000f}.card-top[data-astro-cid-smr754dv]{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.q-badge[data-astro-cid-smr754dv]{font-size:.8125rem;font-weight:700;color:var(--primary-600, #2563eb);background:var(--primary-50, #eff6ff);padding:4px 10px;border-radius:9999px}.diff-pill[data-astro-cid-smr754dv]{font-size:.75rem;font-weight:600;padding:3px 8px;border-radius:6px}.diff-beginner[data-astro-cid-smr754dv]{background:#dcfce7;color:#166534}.diff-intermediate[data-astro-cid-smr754dv]{background:#fef3c7;color:#92400e}.diff-advanced[data-astro-cid-smr754dv]{background:#fee2e2;color:#991b1b}.diff-word-problem[data-astro-cid-smr754dv]{background:#e0e7ff;color:#3730a3}.q-text[data-astro-cid-smr754dv]{font-size:1.05rem;font-weight:600;color:var(--text-heading, #0f172a);line-height:1.55;margin-bottom:1rem}.q-hint-container[data-astro-cid-smr754dv]{margin-bottom:1rem}.hint-toggle-btn[data-astro-cid-smr754dv]{background:none;border:none;color:#f59e0b;font-size:.875rem;font-weight:600;cursor:pointer;padding:0}.hint-toggle-btn[data-astro-cid-smr754dv]:hover{text-decoration:underline}.hint-text[data-astro-cid-smr754dv]{font-size:.875rem;color:var(--text-secondary, #64748b);background:#fffbeb;border-left:3px solid #f59e0b;padding:.5rem .75rem;margin-top:.5rem;border-radius:0 6px 6px 0}.options-grid[data-astro-cid-smr754dv]{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem}.option-btn[data-astro-cid-smr754dv]{display:flex;align-items:center;gap:.75rem;background:var(--bg-surface, #f8fafc);border:1px solid var(--border-light, #e2e8f0);padding:.75rem 1rem;border-radius:10px;cursor:pointer;font-size:.9375rem;color:var(--text-heading, #0f172a);text-align:left;transition:all .15s ease}.option-btn[data-astro-cid-smr754dv]:hover{background:#e2e8f0;border-color:#cbd5e1}.option-btn[data-astro-cid-smr754dv].selected-correct{background:#dcfce7;border-color:#22c55e;color:#15803d;font-weight:700}.option-btn[data-astro-cid-smr754dv].selected-wrong{background:#fee2e2;border-color:#ef4444;color:#b91c1c}.opt-letter[data-astro-cid-smr754dv]{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:#fff;font-size:.75rem;font-weight:700;border:1px solid #cbd5e1}.input-action-row[data-astro-cid-smr754dv]{display:flex;gap:.75rem}.practice-input[data-astro-cid-smr754dv]{flex:1;max-width:260px;padding:.625rem .875rem;border:1px solid var(--border-light, #cbd5e1);border-radius:10px;font-size:.95rem}.practice-input[data-astro-cid-smr754dv]:focus{outline:none;border-color:var(--primary-500, #3b82f6);box-shadow:0 0 0 3px #3b82f626}.btn-check-answer[data-astro-cid-smr754dv]{padding:.625rem 1.25rem;background:var(--primary-600, #2563eb);color:#fff;border:none;border-radius:10px;font-size:.9375rem;font-weight:600;cursor:pointer;transition:background .15s ease}.btn-check-answer[data-astro-cid-smr754dv]:hover{background:var(--primary-700, #1d4ed8)}.feedback-box[data-astro-cid-smr754dv]{margin-top:1.25rem;padding:1rem 1.25rem;border-radius:12px;background:#f8fafc;border:1px solid #e2e8f0}.feedback-box[data-astro-cid-smr754dv].is-correct{background:#f0fdf4;border-color:#bbf7d0}.feedback-box[data-astro-cid-smr754dv].is-incorrect{background:#fef2f2;border-color:#fecaca}.feedback-status[data-astro-cid-smr754dv]{font-weight:700;font-size:1rem;margin-bottom:.375rem}.feedback-box[data-astro-cid-smr754dv].is-correct .feedback-status[data-astro-cid-smr754dv]{color:#166534}.feedback-box[data-astro-cid-smr754dv].is-incorrect .feedback-status[data-astro-cid-smr754dv]{color:#991b1b}.feedback-exp[data-astro-cid-smr754dv]{font-size:.9375rem;color:var(--text-primary, #334155);line-height:1.5;margin-bottom:.75rem}.steps-toggle[data-astro-cid-smr754dv]{font-size:.875rem;font-weight:600;color:var(--primary-600, #2563eb);cursor:pointer}.worked-steps-list[data-astro-cid-smr754dv]{margin-top:.75rem;padding-left:1.25rem;display:flex;flex-direction:column;gap:.5rem;font-size:.875rem;color:var(--text-secondary, #475569)}.hidden[data-astro-cid-smr754dv]{display:none!important}