/* Equal cards: three columns now, six tools in two rows. */
.tool-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-rows: 1fr;
}
@media (max-width: 980px) {
    .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
    .tool-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
    .tool-card .thumb-link { grid-row: span 2; }
}