refactor: remove Tailwind CSS configuration and update dependencies

package.json

@@ -15,13 +15,10 @@
 		"@types/node": "^25.6.0",
 		"@types/react": "^19.2.14",
 		"@types/react-dom": "^19.2.3",
-		"autoprefixer": "^10.5.0",
-		"postcss": "^8.5.14",
 		"tailwindcss": "^4.2.4",
 		"typescript": "^6.0.3"
 	},
 	"dependencies": {
-		"@tailwindcss/postcss": "^4.2.4",
 		"next": "^16.2.5",
 		"react": "^19.2.6",
 		"react-dom": "^19.2.6"