.main ul{}

.main ol {
   margin-left: 20px;
   padding: 7px 0;
   color: #000;
   font-size: 18px;
   font-weight: 300;
}

.main ol li {
   list-style-type: decimal;
}

.main ul {
   
   padding: 7px 0;   
}

.main ul li {
   position: relative;
   padding-left: 20px;
   color: #000;
   font-size: 18px;
   font-weight: 300;
   line-height: 135%;
}

.main ul li:after {
   content: '';
   position: absolute;
   top: 15px;
   left: 0;
   width: 15px;
   height: 1px;
   background-color: #000;
}

.main ol {
   /* counter-reset: item; */
   /* list-style-type: none; */
 }
 
 /* Первый уровень */
 .main ol > li {
   counter-increment: item;
 }

 .main ol > li::marker {
   font-weight: 500;
 }
 
 /* Вложенные списки */
 .main ol > li > ol {
   counter-reset: subitem;
   margin-left: 0;
 }
 
 .main ol > li > ol > li {
   counter-increment: subitem;
   list-style-type: none;
 }
 
 .main ol > li > ol > li::before {
   content: counter(item) "." counter(subitem) ".";
   font-weight: 500;
 }