.qrt-form { border:1px solid #e2e2e2; border-radius:12px; padding:16px; }
.qrt-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap:12px; margin-bottom:8px; }
.qrt-actions { margin-top:10px; }
.qrt-result { margin-top:12px; font-size:1.1em; }
.qrt-result.qrt-warn { color:#b45309; }