fix(dm): scope DM theme CSS to .dm-theme class to override BaseLayout purple accent

src/layouts/DmLayout.astro

@@ -17,7 +17,7 @@ const {
 ---
 
 <BaseLayout title={title} description={description} hideLanguageSwitcher={true}>
-  <div class="min-h-screen bg-[var(--bg-primary)] text-[var(--text-primary)] flex flex-col">
+  <div class="dm-theme min-h-screen bg-[var(--bg-primary)] text-[var(--text-primary)] flex flex-col">
     <DmHeader title={title}>
       <a
         href="/"

src/styles/dm-theme.css

@@ -1,4 +1,4 @@
-:root {
+.dm-theme {
   --accent: #E87722;
   --accent-light: #FF9F43;
   --accent-dark: #D35400;