diff --git a/_tools/build.sh b/_tools/build.sh
index e4b908b..aa89c41 100755
--- a/_tools/build.sh
+++ b/_tools/build.sh
@@ -12,7 +12,7 @@ cp -t dist/img img/fn-wysiwyg.png img/main-menu.png
 echo "Copying files..."
 cp -t dist features.txt license.txt readme.txt includes.php wpml-config.xml customized-documentation-schema.txt customized-template-stack.txt CONTRIBUTING.md README.md SECURITY.md
 echo "Setting production flag..."
-sed "s/'C_BOOL_CSS_PRODUCTION_MODE', false/'C_BOOL_CSS_PRODUCTION_MODE', true/g" footnotes.php > dist/footnotes.php
+sed "s/'PRODUCTION_ENV', false/'PRODUCTION_ENV', true/g" footnotes.php > dist/footnotes.php
 echo "Production flag set." 
 
 # TODO: once automatic minification is implemented, this should handle that.
diff --git a/class/dashboard/layout.php b/class/dashboard/layout.php
index 840410a..16d492e 100644
--- a/class/dashboard/layout.php
+++ b/class/dashboard/layout.php
@@ -211,33 +211,16 @@ abstract class MCI_Footnotes_Layout_Engine {
 		 * automated update of version number for cache busting.
 		 * No need to use '-styles' in the handle, as '-css' is appended automatically.
 		 */
-		if ( C_BOOL_CSS_PRODUCTION_MODE ) {
-
-			wp_register_style(
-				'mci-footnotes-admin',
-				plugins_url( 'footnotes/css/settings.min.css' ),
-				array(),
-				filemtime(
-					plugin_dir_path(
-						dirname( __FILE__ )
-					) . 'css/settings.min.css'
-				)
-			);
-
-		} else {
-
-			wp_register_style(
-				'mci-footnotes-admin',
-				plugins_url( 'footnotes/css/settings.css' ),
-				array(),
-				filemtime(
-					plugin_dir_path(
-						dirname( __FILE__, 2 )
-					) . 'css/settings.css'
-				)
-			);
-
-		}
+		wp_register_style(
+			'mci-footnotes-admin',
+			plugins_url( 'footnotes/css/settings' . ( ( PRODUCTION_ENV ) ? '.min' : '' ) . '.css' ),
+			array(),
+			( PRODUCTION_ENV ) ? C_STR_PACKAGE_VERSION : filemtime(
+				plugin_dir_path(
+					dirname( __FILE__, 2 )
+				) . 'css/settings' . ( ( PRODUCTION_ENV ) ? '.min' : '' ) . '.css'
+			)
+		);
 
 		wp_enqueue_style( 'mci-footnotes-admin' );
 	}
diff --git a/class/init.php b/class/init.php
index af20d85..ce57b02 100644
--- a/class/init.php
+++ b/class/init.php
@@ -339,7 +339,7 @@ class MCI_Footnotes {
 		 * The Boolean may be set at the bottom of the plugin’s main PHP file.
 		 * @see footnotes.php
 		 */
-		if ( C_BOOL_CSS_PRODUCTION_MODE ) {
+		if ( PRODUCTION_ENV ) {
 
 			/**
 			 * Enqueues a minified united external stylesheet in production.
@@ -416,11 +416,7 @@ class MCI_Footnotes {
 					MCI_Footnotes_Config::C_STR_PLUGIN_NAME . '/css/footnotes-' . $l_str_tooltip_mode_short . 'brpl' . $l_str_layout_mode . '.min.css'
 				),
 				array(),
-				filemtime(
-					plugin_dir_path(
-						dirname( __FILE__ )
-					) . 'css/footnotes-' . $l_str_tooltip_mode_short . 'ttbrpl' . $l_str_layout_mode . '.min.css'
-				),
+				C_STR_PACKAGE_VERSION,
 				'all'
 			);
 
@@ -440,7 +436,7 @@ class MCI_Footnotes {
 				array(),
 				filemtime(
 					plugin_dir_path(
-						dirname( __FILE__ )
+						dirname( __FILE__, 1 )
 					) . 'css/dev-common.css'
 				)
 			);
@@ -450,7 +446,7 @@ class MCI_Footnotes {
 				array(),
 				filemtime(
 					plugin_dir_path(
-						dirname( __FILE__ )
+						dirname( __FILE__, 1 )
 					) . 'css/dev-tooltips.css'
 				)
 			);
@@ -462,7 +458,7 @@ class MCI_Footnotes {
 					array(),
 					filemtime(
 						plugin_dir_path(
-							dirname( __FILE__ )
+							dirname( __FILE__, 1 )
 						) . 'css/dev-amp-tooltips.css'
 					)
 				);
@@ -475,7 +471,7 @@ class MCI_Footnotes {
 					array(),
 					filemtime(
 						plugin_dir_path(
-							dirname( __FILE__ )
+							dirname( __FILE__, 1 )
 						) . 'css/dev-tooltips-alternative.css'
 					)
 				);
@@ -491,7 +487,7 @@ class MCI_Footnotes {
 					array(),
 					filemtime(
 						plugin_dir_path(
-							dirname( __FILE__ )
+							dirname( __FILE__, 1 )
 						) . 'css/dev-layout-' . $l_str_page_layout_option . '.css'
 					),
 					'all'
diff --git a/class/layout/abstract-engine.php b/class/layout/abstract-engine.php
index 143ad96..b1826e6 100644
--- a/class/layout/abstract-engine.php
+++ b/class/layout/abstract-engine.php
@@ -211,7 +211,7 @@ abstract class MCI_Footnotes_Layout_Engine {
 		 * automated update of version number for cache busting.
 		 * No need to use '-styles' in the handle, as '-css' is appended automatically.
 		 */
-		if ( true === C_BOOL_CSS_PRODUCTION_MODE ) {
+		if ( true === PRODUCTION_ENV ) {
 
 			wp_register_style( 'mci-footnotes-admin', plugins_url( 'footnotes/css/settings.min.css' ), array(), C_STR_PACKAGE_VERSION );
 
diff --git a/footnotes.php b/footnotes.php
index 5917208..b6ab661 100755
--- a/footnotes.php
+++ b/footnotes.php
@@ -103,4 +103,4 @@ $g_obj_mci_footnotes->run();
  * Developing stylesheets is meant to be easier when this is set to false.
  * WARNING: This facility designed for development must NOT be used in production.
  */
-define( 'C_BOOL_CSS_PRODUCTION_MODE', false );
+define( 'PRODUCTION_ENV', false );