Improve blog post rendering

package.json

@@ -48,12 +48,15 @@
     "date-fns": "^4.1.0",
     "embla-carousel-autoplay": "^8.5.2",
     "embla-carousel-react": "^8.5.2",
+    "katex": "^0.17.0",
     "lucide-react": "^0.479.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-fast-marquee": "^1.6.5",
     "react-hook-form": "^7.54.2",
     "react-icons": "^5.4.0",
+    "rehype-katex": "^7.0.1",
+    "remark-math": "^6.0.0",
     "tailwind-merge": "^3.0.2",
     "tailwindcss": "^4.0.12",
     "tailwindcss-animate": "^1.0.7",