fix: add missing SectionSkeleton component

src/components/ui/loading-skeleton.tsx

@@ -78,3 +78,19 @@ export function NewsCardSkeleton() {
     </div>
   );
 }
+
+export function SectionSkeleton() {
+  return (
+    <div className="py-24">
+      <div className="container-wide">
+        <div className="max-w-6xl mx-auto">
+          <div className="grid md:grid-cols-2 gap-8">
+            {Array.from({ length: 4 }).map((_, index) => (
+              <ServiceCardSkeleton key={index} />
+            ))}
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}