.calculator{background:#fafafa;border:1px solid #ddd;margin:2rem 0;padding:1.5rem}.calculator fieldset{border:0;min-width:0;margin:0;padding:0}.calculator legend{margin-bottom:1.2rem;font-size:1.4rem;font-weight:700}.field-grid{grid-template-columns:1fr 1fr;gap:1.4rem;display:grid}.field{min-width:0}.field label{margin-bottom:.5rem;font-size:.95rem;font-weight:600;display:block}.field input{color:#111;background:#fff;border:1px solid #888;border-radius:2px;width:100%;min-height:48px;padding:.6rem .7rem;display:block}.field small{color:#555;margin-top:.4rem;font-size:.8rem;line-height:1.5;display:block}.field input[aria-invalid=true]{border:2px solid #b90202}.field-error{color:#a40000;font-size:.85rem}.actions{flex-wrap:wrap;gap:.8rem;margin-top:1.5rem;display:flex}.actions button{border:1px solid #888;border-radius:2px;padding:.6rem .9rem;line-height:1.5}.actions .button{border-color:#b90202}.secondary{color:#111;background:#fff}.calculation-result{background:#fff;border-left:4px solid #b90202;margin-top:1.5rem;padding:1.3rem}.calculation-result h2{margin:0 0 1rem;font-size:1.45rem}.calculation-result dl{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:.7rem 1rem;margin:0;display:grid}.calculation-result dt,.calculation-result dd{margin:0}.calculation-result dd{font-weight:700}.calculation-result p{font-size:.9rem}.example-note{margin:0 0 1.5rem;font-size:.9rem}@media (width<=600px){.field-grid{grid-template-columns:1fr}.calculator,.calculation-result{padding:1rem}.calculation-result dl{grid-template-columns:1fr;gap:.2rem}.calculation-result dd{margin-bottom:.7rem}.actions button{width:100%}}