dm_new: Lnb고정

apps/dm_new/components/Lnb.tsx

@@ -68,11 +68,21 @@ export default function Lnb() {
   }, [pathname, secondLevelMenus]);
 
   return (
-    <aside className="w-[260px] min-w-[260px] shrink-0">
+    <aside
+        className={[
+        "fixed left-0 top-[83px]",                 // ✅ 화면 고정 + TopNav 아래로
+        "w-[260px] min-w-[260px] shrink-0",
+        "h-[calc(100vh-83px)]",                    // ✅ 남은 높이만큼
+        "overflow-y-auto",                         // ✅ LNB 내부 스크롤
+        "bg-white z-50",                           // ✅ 겹침 방지
+        ].join(" ")}
+    >
+      {/* 타이틀 */}
       <div className="flex h-[120px] items-center justify-center bg-gradient-to-r from-cyan-500 to-green-500 text-[40px] font-bold text-white">
         {currentTopMenu?.menuKornNm?.trim().split(/\s+/).pop() ?? ""}
       </div>
 
+      {/* 메뉴 */}  
       <ul>
         {secondLevelMenus.map((item) => {
           const hasChildren = hasAnyChild(item);