.apt-grid { display: flex; flex-wrap: wrap; gap: 20px; }
.apt-item { width: calc(33.333% - 20px); text-align: center; }
.apt-thumb img { max-width: 100%; height: auto; }
#apt-filter-form select, #apt-filter-form button { margin-right: 10px; padding: 8px; }
@media(max-width:768px) {
    .apt-item { width: calc(50% - 20px); }
}
@media(max-width:480px) {
    .apt-item { width: 100%; }
}