/* Ajustes rápidos de diseño sin tocar el sistema base. */
/* Ajuste v2: campos avanzados comparables a calculadoras de retenciones */
.nested-block{grid-column:1/-1;border:1px solid var(--line);border-radius:20px;background:#f8fafc;padding:14px 16px;text-align:left}
.nested-block summary{font-weight:900;cursor:pointer;text-align:center;color:var(--brand)}
.nested-block[open] summary{margin-bottom:12px}
.mini-note{margin:0 0 12px;color:#667085;font-size:14px;text-align:center}
.compact-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
@media (max-width:620px){.nested-block{padding:14px 12px;border-radius:18px}.compact-grid{grid-template-columns:1fr}.nested-block label,.nested-block small{text-align:center}}