.pcf-calculator{margin:20px 0;padding:16px;border:1px solid #ddd;border-radius:8px;background:#fafafa}.pcf-calculator h3{margin-top:0}.pcf-row{display:flex;gap:8px;align-items:center}.pcf-cep{max-width:180px}.pcf-result{margin-top:12px}.pcf-rates{margin:0;padding-left:18px}.pcf-rates li{margin:6px 0}.pcf-error{color:#b32d2e;font-weight:600}