How to display a section, subsection and infoblock elements?

Question

1C-Bitrix

hello everyone
I am displaying the catalog in bitrix
catalog section top (it doesn’t work through section list and just section too) I
need such a structure
Section of the first level
Section of the second level
Elements
Code

<div class="panel-group smt-panel-group smt-panel-group_colored smt-panel-group_services">
<?$countSection = 0;?>
<?foreach($arResult["SECTIONS"] as $arSection):?>
<?if ($arSection["DEPTH_LEVEL"] < 2):?>
<?$isOpenSection = (isset($arSection["UF_OPEN"]) && $arSection["UF_OPEN"]) || $countSection == 0;?>//условие нажат ли раздел 1-го уровня
    <div class="panel smt-panel-primary <?if($isOpenSection):?>smt-panel-primary_in<?endif?>">
        <div class="panel-heading">
            <div class="panel-title" id="<?=$this->GetEditAreaId('section_'.$arSection['ID']);?>"><a name="smt-accordion-primary-item-<?=$arSection['ID']?>"></a><a data-toggle="collapse" href="#smt-accordion-primary-item-<?=$arSection['ID']?>"><?=$arSection["NAME"]?></a></div>
        </div>
        <div class="panel-collapse collapse <?if($isOpenSection):?>in<?endif?>" id="smt-accordion-primary-item-<?=$arSection['ID']?>">
            <div class="panel-body"> 
      //ВОТ В ЭТУ ЧАСТЬ МНЕ НУЖНО ВЫВЕСТИ $arSection["DEPTH_LEVEL"] == 2 И ЕГО ЭЛЕМЕНТЫ, ЧТОБЫ ОНО БЫЛО СКРЫТО ПОКА ПОЛЬЗОВАТЕЛЬ НЕ НАЖАЛ
      //КАК МНЕ ЭТО СДЕЛАТЬ ЕСЛИ У МЕНЯ СТОИТ УСЛОВИЕ $arSection["DEPTH_LEVEL"] == 1
                <table class="table table-striped table-hover smt-table smt-table_services">
                    <tbody class="hideseek-data">
                    <? $count = 0; ?>
                    <?foreach($arSection["ITEMS"] as $arItem):?>
                    <tr id="<?=$this->GetEditAreaId($arItem['ID']);?>">
                        <td><?=$arItem["NAME"]?></td>
                        <td><?=$arItem["DISPLAY_PROPERTIES"]["PRICE"]["DISPLAY_VALUE"]?></td>
                    </tr>
                    <?endforeach?>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
<?endif?>
<?$countSection += 1;?>
<?endforeach;?>
</div>