Refactor dark style

src/assets/css/default.css

@@ -1,5 +1,3 @@
-@import 'default/dark.css?v=0.7.1';
-
 :root {
     --lineHeight: 1.4285;
     --wishPreviewHeight: min(30vh, 224px);

src/classes/page.php

@@ -309,6 +309,16 @@ class Page
             />
             <?php
 
+            /** Default (Dark) */
+            $stylesheetDefaultDark         = 'src/assets/css/default/dark.css';
+            $stylesheetDefaultDarkModified = filemtime($stylesheetDefaultDark);
+            ?>
+            <link rel="stylesheet"
+                  type="text/css"
+                  href="/<?= $stylesheetDefaultDark ?>?m=<?= $stylesheetDefaultDarkModified ?>"
+            />
+            <?php
+
             /** Page */
             $stylesheetPage = 'src/assets/css/' . $this->name .  '.css';