.qrt-form { border:1px solid #e2e2e2; border-radius:12px; padding:16px; }
.qrt-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap:12px; margin-bottom:8px; }
.qrt-adv summary { cursor:pointer; font-weight:600; }
.qrt-adv-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap:8px; margin-top:8px; }
.qrt-actions { margin-top:10px; }
.qrt-result { margin-top:12px; font-size:1.1em; }