🎨 Fix CSS: Import global.css + plain CSS styles

CSS was not being imported! Fixed:

✅ Added 'import ../styles/global.css' to BaseLayout.astro
✅ Rewrote CSS with plain CSS (not @apply which wasn't working)
✅ Cookie banner has inline styles as backup
✅ Font size: 16px base
✅ Solid colors: green-600 (#16a34a), gray-900 (#111827)
✅ Footer has policy links

Build: 12 pages ✅

dealplustech-astro/node_modules/mdast-util-gfm-strikethrough/index.d.ts

@@ -0,0 +1,19 @@
+export {
+  gfmStrikethroughFromMarkdown,
+  gfmStrikethroughToMarkdown
+} from './lib/index.js'
+
+// Add custom data tracked to turn a syntax tree into markdown.
+declare module 'mdast-util-to-markdown' {
+  interface ConstructNameMap {
+    /**
+     * Whole strikethrough.
+     *
+     * ```markdown
+     * > | ~~a~~
+     *     ^^^^^
+     * ```
+     */
+    strikethrough: 'strikethrough'
+  }
+}