.formula-box{background:#f8fafc;border:1px solid #e5e7eb;border-radius:10px;padding:16px 20px;margin:16px 0;font-family:'Courier New',ui-monospace,monospace;font-size:.95rem;text-align:center;color:#1e293b;line-height:1.6}.formula-box small{display:block;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;font-size:.8rem;color:#64748b;margin-top:6px}@media (max-width:640px){.formula-box{font-size:.85rem;padding:12px 14px}}