$step: 24px;

@for $i from 1 to 5 {
  .comment_level {
    &_$(i) {
      padding-left: calc($i * $step);

      &.comment_replying {
        .comment__input {
          @media (-moz-touch-enabled: 1) and (max-width: 768px), (pointer: coarse) and (max-width: 768px) {
            margin-left: calc(-$i * $step);
          }
        }
      }
    }
  }
}