.key-fields>div:last-child{grid-column:auto}
.key-fields select{display:block;width:100%;min-width:0;border:1px solid #A5B9B1;border-radius:9px;background:var(--paper);padding:11px 8px;color:var(--ink);font:inherit;font-size:16px}
.key-fields select:focus-visible,.key-swap:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
.key-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.key-swap{border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--ink);padding:12px 16px;font:inherit;font-weight:700;cursor:pointer}
.key-actions button:disabled{opacity:.5;cursor:default}
@media(max-width:380px){.key-fields{grid-template-columns:1fr}.key-calculator-page .calculator-explainer table{font-size:12px}.key-actions{align-items:stretch}.key-actions button{width:100%}}