МагазинГруппыТоваровНаГлавной. Подкатегории в несколько колонок

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE xsl:stylesheet>
<xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:hostcms="http://www.hostcms.ru/"
   exclude-result-prefixes="hostcms">
   <xsl:output xmlns="http://www.w3.org/TR/xhtml1/strict" doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN" encoding="utf-8" indent="yes" method="html" omit-xml-declaration="no" version="1.0" media-type="text/xml"/>
   
   <!-- МагазинГруппыТоваровНаГлавной -->
   
   <xsl:template match="/">
      <xsl:apply-templates select="/shop"/>
   </xsl:template>
   
   <!-- Шаблон для магазина -->
   <xsl:template match="/shop">
      <div class="col-xs-12 col-sm-4 col-md-3 sidemenu-holder">
         <div class="side-menu animate-dropdown">
         <div class="head"><i class="fa fa-list"></i> Каталог</div>
            <nav class="yamm megamenu-horizontal" role="navigation">
               <ul class="nav">
                  <xsl:apply-templates select="shop_group"/>
               </ul>
            </nav>
         </div>
      </div>
   </xsl:template>
   
   <!-- Шаблон для групп товара -->
   <xsl:template match="shop_group">
      <li>
         
         <xsl:if test="shop_group">
            <xsl:attribute name="class">dropdown menu-item</xsl:attribute>
         </xsl:if>
         <a href="{url}" hostcms:id="{@id}" hostcms:field="name" hostcms:entity="shop_group">
            <xsl:if test="shop_group">
               <xsl:attribute name="class">dropdown-toggle</xsl:attribute>
               <xsl:attribute name="data-toggle">dropdown</xsl:attribute>
            </xsl:if>
            <xsl:value-of disable-output-escaping="yes" select="name"/>
         </a>
         
         <!-- Если есть подгруппы -->
         <xsl:if test="shop_group">
            <ul class="dropdown-menu mega-menu">
               <li class="yamm-content">
                  <div class="row">
                     <div class="col-md-4">
                        <ul class="list-unstyled">
                           <xsl:apply-templates select="shop_group" mode="sub_group"/>
                        </ul>
                     </div>
                  </div>
               </li>
            </ul>
         </xsl:if>
         
      </li>
   </xsl:template>
   
   <xsl:template match="shop_group" mode="sub_group">
      <li>
         <a href="{url}" hostcms:id="{@id}" hostcms:field="name" hostcms:entity="shop_group"><xsl:value-of disable-output-escaping="yes" select="name"/></a>
         <xsl:apply-templates select="shop_group" mode="sub_sub_group"/>
      </li>
   </xsl:template>
   
   <xsl:template match="shop_group" mode="sub_sub_group">
      <br /><a style="color:#9C9C9C; font-size:13px;" href="{url}" hostcms:id="{@id}" hostcms:field="name" hostcms:entity="shop_group"><xsl:value-of disable-output-escaping="yes" select="name"/></a>
   </xsl:template>
   
</xsl:stylesheet>