style(community): adjust card spacing and formatting

app/(main)/community/page.tsx

@@ -78,7 +78,7 @@ export default function CommunityPage() {
         </div>
       </div>
 
-      <div className="space-y-3">
+      <div className="space-y-4">
         {filteredPosts.map((post) =>
           (() => {
             const linkedOrder = post.linkedOrderId
@@ -90,7 +90,7 @@ export default function CommunityPage() {
 
             return (
               <Link key={post.id} href={`/post/${post.id}`}>
-                <Card>
+                <Card className="hover:shadow-md transition-shadow">
                   <CardHeader className="pb-3">
                     <div className="flex items-center gap-3">
                       <Avatar className="h-9 w-9">