Use different page layout if child category?

I am modifying the category.php file to have 3 different layouts. One will be the standard layout for our theme, the other will be full-width, removing the sidebar if it is in the Articles category. I also need to the non-sidebar layout to be used on any child category of the Articles category. I can’t specify certain cat names or IDs in the category.php file because they won’t always be the same.

Right now, my category.php file looks like this:

<?php if (is_category( 'Articles' )): ?>
  /*non-sidebar content goes here*/
<?php else: ?>
  /*regular category content goes here*/
<?php get_sidebar(); ?>
<?php endif; ?>
<?php get_footer(); ?>

I’ve done a search looking for how to do this, but haven’t been able to find anything. Thanks for the help!