Fix UI issues: 3 columns, SubNav label, back button, sticky map, hover flyTo

- Homepage roles section now shows 3 columns on medium screens
- SubNavigation catalog offers label changed to "Предложения"
- Removed back button from catalog/offers page
- ListMapLayout: sticky map with full height
- ListMapLayout: hover on card flies to location on map

app/pages/catalog/offers/index.vue

@@ -36,14 +36,6 @@
 
     <!-- Offers for selected product -->
     <template v-else>
-      <!-- Back button -->
-      <div class="py-2 px-4 lg:px-0">
-        <NuxtLink :to="localePath('/catalog/offers')" class="btn btn-ghost btn-sm gap-2">
-          <Icon name="lucide:arrow-left" size="16" />
-          {{ t('common.back') }}
-        </NuxtLink>
-      </div>
-
       <CatalogPage
         :items="items"
         :loading="isLoading"