diff --git a/adminfront/src/components/ui/table.tsx b/adminfront/src/components/ui/table.tsx
index 8ca9d06c..62c33432 100644
--- a/adminfront/src/components/ui/table.tsx
+++ b/adminfront/src/components/ui/table.tsx
@@ -5,7 +5,7 @@ const Table = React.forwardRef<
   HTMLTableElement,
   React.HTMLAttributes<HTMLTableElement>
 >(({ className, ...props }, ref) => (
-  <div className="relative w-full overflow-auto">
+  <div className="relative w-full">
     <table
       ref={ref}
       className={cn("w-full caption-bottom text-sm", className)}
@@ -69,7 +69,7 @@ const TableHead = React.forwardRef<
   <th
     ref={ref}
     className={cn(
-      "h-12 px-6 text-left text-xs font-bold uppercase tracking-[0.08em] text-foreground align-middle",
+      "h-12 px-6 text-left text-xs font-bold uppercase tracking-[0.08em] text-foreground align-middle sticky top-0 bg-inherit",
       className,
     )}
     {...props}
diff --git a/adminfront/src/features/api-keys/ApiKeyListPage.tsx b/adminfront/src/features/api-keys/ApiKeyListPage.tsx
index 86e26fb9..4999febe 100644
--- a/adminfront/src/features/api-keys/ApiKeyListPage.tsx
+++ b/adminfront/src/features/api-keys/ApiKeyListPage.tsx
@@ -121,7 +121,7 @@ function ApiKeyListPage() {
         </CardHeader>
         <CardContent className="flex-1 flex flex-col min-h-0 pt-0">
           {(errorMsg || fallbackError) && (
-            <div className="mb-4 rounded-lg border border-destructive/40 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+            <div className="mb-4 rounded-lg border border-destructive/40 bg-destructive/10 px-3 py-2 text-sm text-destructive flex-shrink-0">
               {errorMsg ?? fallbackError}
             </div>
           )}
@@ -129,7 +129,7 @@ function ApiKeyListPage() {
           <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
             <div className="flex-1 overflow-auto relative custom-scrollbar">
               <Table>
-                <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                   <TableRow>
                     <TableHead>
                       {t("ui.admin.api_keys.list.table.name", "NAME")}
diff --git a/adminfront/src/features/audit/AuditLogsPage.tsx b/adminfront/src/features/audit/AuditLogsPage.tsx
index 74f3baa2..530c3a42 100644
--- a/adminfront/src/features/audit/AuditLogsPage.tsx
+++ b/adminfront/src/features/audit/AuditLogsPage.tsx
@@ -267,7 +267,7 @@ function AuditLogsPage() {
           <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
             <div className="flex-1 overflow-auto relative custom-scrollbar">
               <Table className="table-fixed">
-                <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                   <TableRow>
                     <TableHead className="w-[140px]">
                       {t("ui.admin.audit.table.time", "TIME")}
diff --git a/adminfront/src/features/tenants/routes/TenantAdminsAndOwnersTab.tsx b/adminfront/src/features/tenants/routes/TenantAdminsAndOwnersTab.tsx
index e1ebb9df..33faca35 100644
--- a/adminfront/src/features/tenants/routes/TenantAdminsAndOwnersTab.tsx
+++ b/adminfront/src/features/tenants/routes/TenantAdminsAndOwnersTab.tsx
@@ -236,7 +236,7 @@ export function TenantAdminsAndOwnersTab() {
             <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
               <div className="flex-1 overflow-auto relative custom-scrollbar">
                 <Table>
-                  <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                  <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                     <TableRow>
                       <TableHead className="w-[250px] font-bold">
                         {t("ui.admin.tenants.owners.table_name", "이름")}
@@ -365,7 +365,7 @@ export function TenantAdminsAndOwnersTab() {
             <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
               <div className="flex-1 overflow-auto relative custom-scrollbar">
                 <Table>
-                  <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                  <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                     <TableRow>
                       <TableHead className="w-[250px] font-bold">
                         {t("ui.admin.tenants.admins.table_name", "이름")}
diff --git a/adminfront/src/features/tenants/routes/TenantGroupsPage.tsx b/adminfront/src/features/tenants/routes/TenantGroupsPage.tsx
index 14d05871..511f6680 100644
--- a/adminfront/src/features/tenants/routes/TenantGroupsPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantGroupsPage.tsx
@@ -462,7 +462,7 @@ function TenantGroupsPage() {
             <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
               <div className="flex-1 overflow-auto relative custom-scrollbar">
                 <Table>
-                  <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                  <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                     <TableRow>
                       <TableHead>
                         {t("ui.admin.groups.table.name", "NAME")}
@@ -559,7 +559,7 @@ function TenantGroupsPage() {
             <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
               <div className="flex-1 overflow-auto relative custom-scrollbar">
                 <Table>
-                  <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                  <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                     <TableRow>
                       <TableHead>
                         {t("ui.admin.groups.members.table.name", "이름")}
diff --git a/adminfront/src/features/tenants/routes/TenantListPage.tsx b/adminfront/src/features/tenants/routes/TenantListPage.tsx
index c1e68d3a..2d9705d0 100644
--- a/adminfront/src/features/tenants/routes/TenantListPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantListPage.tsx
@@ -174,7 +174,7 @@ function TenantListPage() {
         </CardHeader>
         <CardContent className="flex-1 flex flex-col min-h-0 pt-0">
           {(errorMsg || fallbackError) && (
-            <div className="mb-4 rounded-lg border border-destructive/40 bg-destructive/10 px-3 py-2 text-sm text-destructive">
+            <div className="mb-4 rounded-lg border border-destructive/40 bg-destructive/10 px-3 py-2 text-sm text-destructive flex-shrink-0">
               {errorMsg ?? fallbackError}
             </div>
           )}
@@ -182,7 +182,7 @@ function TenantListPage() {
           <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
             <div className="flex-1 overflow-auto relative custom-scrollbar">
               <Table>
-                <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                   <TableRow>
                     <TableHead>
                       {t("ui.admin.tenants.table.name", "NAME")}
diff --git a/adminfront/src/features/tenants/routes/TenantSubTenantsPage.tsx b/adminfront/src/features/tenants/routes/TenantSubTenantsPage.tsx
index c0946db1..dbc965a9 100644
--- a/adminfront/src/features/tenants/routes/TenantSubTenantsPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantSubTenantsPage.tsx
@@ -61,7 +61,7 @@ function TenantSubTenantsPage() {
         <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
           <div className="flex-1 overflow-auto relative custom-scrollbar">
             <Table>
-              <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+              <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                 <TableRow>
                   <TableHead>
                     {t("ui.admin.tenants.sub.table.name", "NAME")}
diff --git a/adminfront/src/features/tenants/routes/TenantUsersPage.tsx b/adminfront/src/features/tenants/routes/TenantUsersPage.tsx
index f64958d3..e2956a68 100644
--- a/adminfront/src/features/tenants/routes/TenantUsersPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantUsersPage.tsx
@@ -55,7 +55,7 @@ function TenantUsersPage() {
         <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
           <div className="flex-1 overflow-auto relative custom-scrollbar">
             <Table>
-              <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+              <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                 <TableRow>
                   <TableHead>
                     {t("ui.admin.tenants.members.table.name", "NAME")}
diff --git a/adminfront/src/features/user-groups/routes/GlobalUserGroupListPage.tsx b/adminfront/src/features/user-groups/routes/GlobalUserGroupListPage.tsx
index e4bdae5b..7bfb4891 100644
--- a/adminfront/src/features/user-groups/routes/GlobalUserGroupListPage.tsx
+++ b/adminfront/src/features/user-groups/routes/GlobalUserGroupListPage.tsx
@@ -85,9 +85,9 @@ function TenantGroupCard({ tenant }: { tenant: TenantSummary }) {
       </CardHeader>
       <CardContent className="flex-1 flex flex-col min-h-0 pt-0">
         <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
-          <div className="flex-1 overflow-auto relative custom-scrollbar max-h-[400px]">
+          <div className="flex-1 overflow-auto relative custom-scrollbar">
             <Table>
-              <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+              <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                 <TableRow>
                   <TableHead className="w-[250px]">그룹명</TableHead>
                   <TableHead>설명</TableHead>
diff --git a/adminfront/src/features/user-groups/routes/TenantUserGroupsTab.tsx b/adminfront/src/features/user-groups/routes/TenantUserGroupsTab.tsx
index 15988252..ad60e0d3 100644
--- a/adminfront/src/features/user-groups/routes/TenantUserGroupsTab.tsx
+++ b/adminfront/src/features/user-groups/routes/TenantUserGroupsTab.tsx
@@ -228,7 +228,7 @@ const MemberTable: React.FC<{
 }> = ({ members, isLoading, onRefresh, showTenant }) => (
   <div className="border rounded-md overflow-hidden">
     <Table>
-      <TableHeader className="bg-secondary/100 shadow-sm z-10">
+      <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
         <TableRow>
           <TableHead className="h-9">
             {t("ui.admin.users.table.name", "NAME")}
@@ -1106,7 +1106,7 @@ function TenantUserGroupsTab() {
           <div className="flex-1 rounded-md border-0 overflow-hidden flex flex-col">
             <div className="flex-1 overflow-auto relative custom-scrollbar">
               <Table>
-                <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                   <TableRow>
                     <TableHead className="pl-6 w-[40%]">
                       {t("ui.admin.tenants.table.name", "NAME")}
diff --git a/adminfront/src/features/user-groups/routes/UserGroupDetailPage.tsx b/adminfront/src/features/user-groups/routes/UserGroupDetailPage.tsx
index 384b2fdd..4bf60753 100644
--- a/adminfront/src/features/user-groups/routes/UserGroupDetailPage.tsx
+++ b/adminfront/src/features/user-groups/routes/UserGroupDetailPage.tsx
@@ -351,7 +351,7 @@ export function UserGroupDetailPage() {
             <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
               <div className="flex-1 overflow-auto relative custom-scrollbar">
                 <Table>
-                  <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                  <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                     <TableRow>
                       <TableHead className="font-bold">
                         {t("ui.admin.users.list.table.name_email", "사용자")}
@@ -536,7 +536,7 @@ export function UserGroupDetailPage() {
             <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
               <div className="flex-1 overflow-auto relative custom-scrollbar">
                 <Table>
-                  <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                  <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                     <TableRow>
                       <TableHead className="font-bold">
                         {t("ui.admin.users.detail.form.tenant", "대상 테넌트")}
diff --git a/adminfront/src/features/users/UserListPage.tsx b/adminfront/src/features/users/UserListPage.tsx
index b2f6219a..18f8bbec 100644
--- a/adminfront/src/features/users/UserListPage.tsx
+++ b/adminfront/src/features/users/UserListPage.tsx
@@ -420,7 +420,7 @@ function UserListPage() {
           <div className="flex-1 rounded-md border overflow-hidden flex flex-col">
             <div className="flex-1 overflow-auto relative custom-scrollbar">
               <Table>
-                <TableHeader className="sticky top-0 bg-secondary/100 backdrop-blur z-10 shadow-sm">
+                <TableHeader className="sticky top-0 z-10 bg-secondary shadow-sm">
                   <TableRow>
                     <TableHead className="w-12">
                       <input