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var(--border-light);border-radius:8px;padding:20px;transition:border-color .2s}.question-card:hover{border-color:var(--brand-primary-light)}.qc-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:12px}.qc-tags{display:flex;align-items:center;gap:8px}.tag-blue{background:var(--brand-primary);color:#fff;padding:2px 8px;font-size:12px;border-radius:12px;font-weight:500}.qc-type{font-size:13px;color:var(--text-secondary)}.qc-metrics{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-secondary)}.qc-metrics .error-rate{color:var(--danger);font-weight:600}.qc-body{font-size:14px;color:var(--text-primary);line-height:1.6;margin-bottom:16px}.qc-footer{display:flex;justify-content:flex-end;gap:12px}.btn-toggle{background:#f0f4f8;border:none;color:var(--brand-primary);padding:6px 16px;border-radius:16px;font-size:12px;cursor:pointer;transition:background 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