Use "archive" instead of "loop" terminology to bring in line with HC3+.

misc/loop-meta.php

@@ -1,16 +1,16 @@
-<div <?php hybrid_attr( 'loop-meta' ); ?>>
+<div <?php hybrid_attr( 'archive-header' ); ?>>
 
-	<h1 <?php hybrid_attr( 'loop-title' ); ?>><?php the_archive_title(); ?></h1>
+	<h1 <?php hybrid_attr( 'archive-title' ); ?>><?php the_archive_title(); ?></h1>
 
 	<?php if ( is_category() || is_tax() ) : // If viewing a category or custom taxonomy. ?>
 
 		<?php hybrid_get_menu( 'sub-terms' ); // Loads the menu/sub-terms.php template. ?>
 
 	<?php endif; // End taxonomy check. ?>
 
-	<?php if ( !is_paged() && $desc = get_the_archive_description() ) : // Check if we're on page/1. ?>
+	<?php if ( ! is_paged() && $desc = get_the_archive_description() ) : // Check if we're on page/1. ?>
 
-		<div <?php hybrid_attr( 'loop-description' ); ?>>
+		<div <?php hybrid_attr( 'archive-description' ); ?>>
 			<?php echo $desc; ?>
 		</div><!-- .loop-description -->
 

style.css

@@ -731,7 +731,7 @@ img.stargazer-full { margin: 0 0 1.5rem; }
 .entry::after,
 .entry-content::after,
 .entry-summary::after,
-.loop-meta::after,
+.archive-header::after,
 li.comment::after,
 li.comment > article::after,
 li.ping::after,
@@ -1411,9 +1411,9 @@ blockquote::before,
  * This displays the archive, blog, and search title + description.
  */
 
-.loop-meta { margin: 0 0 1.5rem; }
+.archive-header { margin: 0 0 1.5rem; }
 
-	.loop-description {
+	.archive-description {
 		margin:  0 0 1.5rem;
 		padding: 1.5rem 1.5rem 0;
 		border:  1px solid;
@@ -2795,7 +2795,7 @@ textarea,
 .media-info li,
 .wp-playlist-tracks,
 .wp-playlist-item,
-.loop-description,
+.archive-description,
 .navigation,
 .loop-nav,
 #sidebar-subsidiary,
@@ -3037,7 +3037,7 @@ select:focus {
 .format-chat .chat-speaker-10 .chat-author,
 .format-chat .chat-speaker-20 .chat-author  { color: #1abc9c; }
 
-.loop-description {
+.archive-description {
 	color:      #757575;
 	background: #f9f9f9;
 }