fix(PostHead.astro): add is:inline directive to JSON-LD script for proper hydration

chore(content): remove outdated blog posts about blockchain, digital transformation and quantum computing
fix(Layout.astro): add is:inline directive to Google Tag Manager script for proper execution
fix(global.css): update font paths to use absolute URLs for better reliability

src/layouts/Layout.astro

@@ -64,7 +64,7 @@ const { isWide = false } = Astro.props
       </main>
       <Footer />
     </div>
-    <script async src="https://www.googletagmanager.com/gtag/js?id=G-QVK59XQK72"
+    <script is:inline async src="https://www.googletagmanager.com/gtag/js?id=G-QVK59XQK72"
     ></script>
     <script is:inline>
       window.dataLayer = window.dataLayer || [];