diff --git a/src/frontend/client/eslint-suppressions.json b/src/frontend/client/eslint-suppressions.json
index b3ad68c14e..e914f6c21e 100644
--- a/src/frontend/client/eslint-suppressions.json
+++ b/src/frontend/client/eslint-suppressions.json
@@ -1726,9 +1726,6 @@
     }
   },
   "src/components/permission/PermissionListTab.tsx": {
-    "@typescript-eslint/no-explicit-any": {
-      "count": 1
-    },
     "no-restricted-syntax": {
       "count": 4
     }
diff --git a/src/frontend/client/src/components/permission/PermissionDraftEditor.tsx b/src/frontend/client/src/components/permission/PermissionDraftEditor.tsx
index 353a738d36..baba3f4bf4 100644
--- a/src/frontend/client/src/components/permission/PermissionDraftEditor.tsx
+++ b/src/frontend/client/src/components/permission/PermissionDraftEditor.tsx
@@ -1,8 +1,5 @@
-import { Button } from "@bisheng/ui";
-import { Outlined } from "bisheng-icons";
 import { useLocalize } from "~/hooks";
-import { Tooltip, TooltipContent, TooltipTrigger } from "~/components/ui/Tooltip2";
-import { RelationSelect } from "./RelationSelect";
+import { PermissionLevelMenu } from "./PermissionLevelMenu";
 import type { RelationModelOption } from "./RelationSelect";
 import {
   getPermissionDraftRowKey,
@@ -58,6 +55,10 @@ export function PermissionDraftEditor({
           && capabilities.canChangeRelation
           && relationModels.length > 0;
         const canRemove = !row.immutableCreator && capabilities.canRemove;
+        const activeModelId = row.modelId ?? row.relation;
+        const relationLabel =
+          capabilities.relationModels.find((model) => model.id === activeModelId)?.name
+          ?? localize(`com_permission.level_${row.relation}`);
 
         return (
           <div key={rowKey} className="flex min-h-11 items-center gap-3 py-2">
@@ -68,34 +69,19 @@ export function PermissionDraftEditor({
               <span className="min-w-0 truncate text-body text-text-1">{row.subjectName}</span>
             </div>
             {row.immutableCreator ? (
-              <span className="px-2 text-body text-[#999999]">{localize("creator")}</span>
+              <span className="inline-flex h-8 w-[96px] shrink-0 items-center justify-end whitespace-nowrap px-2 text-[14px] leading-[22px] text-[#999999]">
+                {localize("creator")}
+              </span>
             ) : (
-              <RelationSelect
-                value={row.modelId ?? row.relation}
-                onChange={(modelId) => handleRelationChange(row, modelId)}
+              <PermissionLevelMenu
+                label={relationLabel}
                 options={relationModels}
-                disabled={!canChangeRelation}
-                className="w-32"
+                activeId={row.modelId ?? row.relation}
+                canChangeLevel={canChangeRelation}
+                onChange={(modelId) => handleRelationChange(row, modelId)}
+                onRemove={canRemove ? () => handleRemove(row) : undefined}
               />
             )}
-            {canRemove && (
-              <Tooltip>
-                <TooltipTrigger asChild>
-                  <Button
-                    type="button"
-                    color="danger"
-                    variant="text"
-                    size="small"
-                    iconOnly
-                    aria-label={localize("com_permission.remove")}
-                    onClick={() => handleRemove(row)}
-                  >
-                    <Outlined.Delete className="size-4" />
-                  </Button>
-                </TooltipTrigger>
-                <TooltipContent>{localize("com_permission.remove")}</TooltipContent>
-              </Tooltip>
-            )}
           </div>
         );
       })}
diff --git a/src/frontend/client/src/components/permission/PermissionDraftPanel.tsx b/src/frontend/client/src/components/permission/PermissionDraftPanel.tsx
index 6010c933d5..361659a4c6 100644
--- a/src/frontend/client/src/components/permission/PermissionDraftPanel.tsx
+++ b/src/frontend/client/src/components/permission/PermissionDraftPanel.tsx
@@ -3,6 +3,12 @@ import type { SubjectType } from "~/api/permission";
 import { EmptyStateIllustration } from "~/components/illustrations";
 import { useLocalize } from "~/hooks";
 import { PermissionDraftEditor, type PermissionDraftEditorCapabilities } from "./PermissionDraftEditor";
+import {
+  SUBJECT_TAB_BUTTON_ACTIVE_CLASS,
+  SUBJECT_TAB_BUTTON_CLASS,
+  SUBJECT_TAB_BUTTON_INACTIVE_CLASS,
+  SUBJECT_TAB_LIST_CLASS,
+} from "./permissionDialogStyles";
 import { getPermissionDraftRowKey, type PermissionDraftRow } from "./usePermissionDraft";
 
 const SUBJECT_TYPES: SubjectType[] = ["user", "department", "user_group"];
@@ -43,15 +49,15 @@ export function PermissionDraftPanel({
         {localize("com_unified_permission.authorization")}
       </div>
       <div className="flex items-center justify-between gap-3">
-        <div className="inline-flex rounded-md bg-fill-2 p-[3px]">
+        <div className={`inline-flex items-center justify-center ${SUBJECT_TAB_LIST_CLASS}`}>
           {SUBJECT_TYPES.map((type) => (
             <button
               key={type}
               type="button"
-              className={`rounded px-3 py-0.5 text-body ${
+              className={`${SUBJECT_TAB_BUTTON_CLASS} ${
                 activeSubjectType === type
-                  ? "bg-blue-500/[0.15] font-medium text-blue-500"
-                  : "text-text-3"
+                  ? SUBJECT_TAB_BUTTON_ACTIVE_CLASS
+                  : SUBJECT_TAB_BUTTON_INACTIVE_CLASS
               }`}
               onClick={() => onActiveSubjectTypeChange(type)}
             >
@@ -65,7 +71,7 @@ export function PermissionDraftPanel({
             color="primary"
             variant="filled"
             size="small"
-            className="h-7"
+            className="h-7 px-3"
             onClick={onAddAuthorization}
           >
             {localize("com_unified_permission.add_authorization")}
@@ -73,16 +79,19 @@ export function PermissionDraftPanel({
         )}
       </div>
       <div
-        className="h-[400px] overflow-y-auto rounded-xl border border-border-base bg-white px-3"
+        className="h-[400px] overflow-y-auto rounded-xl bg-white pl-2"
         data-testid="authorization-list-body"
       >
         {visibleRows.length === 0 ? (
-          <div className="flex h-full items-center justify-center">
+          <div className="flex h-full flex-col items-center justify-center gap-2">
             <EmptyStateIllustration
               role="img"
               aria-label={localize("com_subscription.no_data")}
               className="size-[120px]"
             />
+            <p className="text-body text-text-3">
+              {localize("com_unified_permission.authorization_empty")}
+            </p>
           </div>
         ) : (
           <PermissionDraftEditor
diff --git a/src/frontend/client/src/components/permission/PermissionDraftPickerDialog.tsx b/src/frontend/client/src/components/permission/PermissionDraftPickerDialog.tsx
index de969bdd03..38b2a605d3 100644
--- a/src/frontend/client/src/components/permission/PermissionDraftPickerDialog.tsx
+++ b/src/frontend/client/src/components/permission/PermissionDraftPickerDialog.tsx
@@ -12,6 +12,14 @@ import {
 } from "~/components/ui/Dialog";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "~/components/ui/Tabs";
 import { useLocalize } from "~/hooks";
+import {
+  INCLUDE_CHILDREN_CHECKBOX_CLASS,
+  INCLUDE_CHILDREN_LABEL_CLASS,
+  PERMISSION_DIALOG_CONTENT_CLASS,
+  PERMISSION_FOOTER_LABEL_CLASS,
+  SUBJECT_TAB_LIST_CLASS,
+  SUBJECT_TAB_TRIGGER_CLASS,
+} from "./permissionDialogStyles";
 import { RelationSelect, type RelationModelOption } from "./RelationSelect";
 import { SubjectSearchDepartment } from "./SubjectSearchDepartment";
 import { SubjectSearchUser } from "./SubjectSearchUser";
@@ -105,28 +113,41 @@ export function PermissionDraftPickerDialog({
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="flex h-[min(680px,80vh)] max-w-[720px] flex-col overflow-hidden bg-surface-primary">
-        <DialogHeader>
-          <DialogTitle>{localize("com_unified_permission.add_authorization")}</DialogTitle>
+      <DialogContent className={PERMISSION_DIALOG_CONTENT_CLASS}>
+        <DialogHeader className="shrink-0 text-left">
+          <DialogTitle className="text-left">
+            {localize("com_unified_permission.add_authorization")}
+          </DialogTitle>
         </DialogHeader>
         <Tabs
           value={subjectType}
           onValueChange={handleSubjectTypeChange}
-          className="flex min-h-0 flex-1 flex-col"
+          className="mt-4 flex min-h-0 flex-1 flex-col overflow-hidden"
         >
-          <div className="flex items-center justify-between gap-3">
-            <TabsList>
-              <TabsTrigger value="user">{localize("com_permission.subject_user")}</TabsTrigger>
-              <TabsTrigger value="department" disabled={!canAddNonUserSubjects}>
+          <div className="flex items-center gap-3">
+            <TabsList className={SUBJECT_TAB_LIST_CLASS}>
+              <TabsTrigger value="user" className={SUBJECT_TAB_TRIGGER_CLASS}>
+                {localize("com_permission.subject_user")}
+              </TabsTrigger>
+              <TabsTrigger
+                value="department"
+                className={SUBJECT_TAB_TRIGGER_CLASS}
+                disabled={!canAddNonUserSubjects}
+              >
                 {localize("com_permission.subject_department")}
               </TabsTrigger>
-              <TabsTrigger value="user_group" disabled={!canAddNonUserSubjects}>
+              <TabsTrigger
+                value="user_group"
+                className={SUBJECT_TAB_TRIGGER_CLASS}
+                disabled={!canAddNonUserSubjects}
+              >
                 {localize("com_permission.subject_user_group")}
               </TabsTrigger>
             </TabsList>
             {subjectType === "department" && (
-              <label className="flex items-center gap-2 text-body text-text-2">
+              <label className={INCLUDE_CHILDREN_LABEL_CLASS}>
                 <Checkbox
+                  className={INCLUDE_CHILDREN_CHECKBOX_CLASS}
                   checked={includeChildren}
                   onCheckedChange={(checked) => setIncludeChildren(checked === true)}
                 />
@@ -134,10 +155,10 @@ export function PermissionDraftPickerDialog({
               </label>
             )}
           </div>
-          <TabsContent value="user" className="mt-4 min-h-0 flex-1">
+          <TabsContent value="user" className="mt-3 min-h-0 flex-1 overflow-hidden p-0">
             <SubjectSearchUser {...searchProps} grantUsersApi={searchApi?.grantUsersApi} />
           </TabsContent>
-          <TabsContent value="department" className="mt-4 min-h-0 flex-1">
+          <TabsContent value="department" className="mt-3 min-h-0 flex-1 overflow-hidden p-0">
             <SubjectSearchDepartment
               {...searchProps}
               includeChildren={includeChildren}
@@ -145,13 +166,15 @@ export function PermissionDraftPickerDialog({
               grantDepartmentSearchApi={searchApi?.grantDepartmentSearchApi}
             />
           </TabsContent>
-          <TabsContent value="user_group" className="mt-4 min-h-0 flex-1">
+          <TabsContent value="user_group" className="mt-3 min-h-0 flex-1 overflow-hidden p-0">
             <SubjectSearchUserGroup {...searchProps} grantUserGroupsApi={searchApi?.grantUserGroupsApi} />
           </TabsContent>
         </Tabs>
-        <DialogFooter className="items-center sm:justify-between">
-          <div className="flex items-center gap-2 text-body-sm text-text-3">
-            <span>{localize("com_permission.uniform_grant")}</span>
+        <DialogFooter className="mt-3 shrink-0 items-center border-t pt-3 sm:justify-between">
+          <div className="flex items-center gap-2">
+            <span className={PERMISSION_FOOTER_LABEL_CLASS}>
+              {localize("com_permission.uniform_grant")}
+            </span>
             <RelationSelect
               value={activeModel?.id ?? ""}
               onChange={setSelectedModelId}
diff --git a/src/frontend/client/src/components/permission/PermissionLevelMenu.tsx b/src/frontend/client/src/components/permission/PermissionLevelMenu.tsx
new file mode 100644
index 0000000000..5176216f35
--- /dev/null
+++ b/src/frontend/client/src/components/permission/PermissionLevelMenu.tsx
@@ -0,0 +1,106 @@
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from "~/components/ui/DropdownMenu";
+import { ChevronDown } from "lucide-react";
+import { useLocalize } from "~/hooks";
+import { cn } from "~/utils";
+import type { RelationModelOption } from "./RelationSelect";
+
+interface PermissionLevelMenuProps {
+  /** Current level shown on the trigger. */
+  label: string;
+  options: RelationModelOption[];
+  activeId?: string;
+  /** When false the level items are hidden — the menu then only offers removal. */
+  canChangeLevel: boolean;
+  onChange: (modelId: string) => void;
+  /** Renders the destructive "移除" item. Omit to hide it. */
+  onRemove?: () => void;
+  className?: string;
+}
+
+/**
+ * Level dropdown shared by the member-management list and the create-page
+ * authorization draft. Removal lives inside the menu — never as a separate
+ * icon button next to it.
+ */
+export function PermissionLevelMenu({
+  label,
+  options,
+  activeId,
+  canChangeLevel,
+  onChange,
+  onRemove,
+  className,
+}: PermissionLevelMenuProps) {
+  const localize = useLocalize();
+  const showLevels = canChangeLevel && options.length > 0;
+
+  if (!showLevels && !onRemove) {
+    return (
+      <span
+        className={cn(
+          "inline-flex h-8 w-[96px] shrink-0 items-center justify-end whitespace-nowrap px-2 text-[14px] leading-[22px] text-[#999999]",
+          className,
+        )}
+      >
+        {label}
+      </span>
+    );
+  }
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <button
+          type="button"
+          className={cn(
+            "inline-flex h-8 w-[96px] items-center justify-end gap-1 rounded-md px-2 text-[14px] leading-[22px] text-[#999999] transition-colors hover:bg-[#F7F7F7]",
+            className,
+          )}
+        >
+          <span className="truncate">{label}</span>
+          <ChevronDown className="size-3.5 shrink-0 text-[#999999]" />
+        </button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent
+        align="end"
+        className="z-[120] max-h-[240px] w-[100px] overflow-x-hidden overflow-y-auto overscroll-none rounded-lg border-0 bg-white p-1 shadow-[0px_6px_20px_1px_rgba(117,145,212,0.12)] scrollbar-hide [&::-webkit-scrollbar]:!w-0 [&::-webkit-scrollbar]:!h-0"
+      >
+        {showLevels && options.map((model) => {
+          const active = model.id === activeId;
+          return (
+            <DropdownMenuItem
+              key={model.id}
+              className={cn(
+                "rounded-md px-2 py-[5px] text-[14px] leading-[22px]",
+                active
+                  ? "bg-blue-500/[0.07] text-blue-500 data-[highlighted]:bg-blue-500/[0.07] data-[highlighted]:text-blue-500"
+                  : "text-[#212121] data-[highlighted]:bg-[#F7F7F7] data-[highlighted]:text-[#212121]",
+              )}
+              onSelect={() => onChange(model.id)}
+            >
+              {model.name}
+            </DropdownMenuItem>
+          );
+        })}
+        {showLevels && onRemove && (
+          <DropdownMenuSeparator className="my-1 bg-[#EBECF0]" />
+        )}
+        {onRemove && (
+          <DropdownMenuItem
+            aria-label={localize("com_permission.remove")}
+            className="rounded-md px-2 py-[5px] text-[14px] leading-[22px] text-[#F53F3F] data-[highlighted]:bg-[#FFF2F0] data-[highlighted]:text-[#F53F3F]"
+            onSelect={() => onRemove()}
+          >
+            {localize("com_permission.remove")}
+          </DropdownMenuItem>
+        )}
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}
diff --git a/src/frontend/client/src/components/permission/PermissionListTab.tsx b/src/frontend/client/src/components/permission/PermissionListTab.tsx
index acff81df39..5bac53b0c5 100644
--- a/src/frontend/client/src/components/permission/PermissionListTab.tsx
+++ b/src/frontend/client/src/components/permission/PermissionListTab.tsx
@@ -12,58 +12,14 @@ import type {
   RevokeItem,
 } from "~/api/permission";
 import { Avatar, AvatarName } from "~/components/ui/Avatar";
-import {
-  DropdownMenu,
-  DropdownMenuContent,
-  DropdownMenuItem,
-  DropdownMenuSeparator,
-  DropdownMenuTrigger,
-} from "~/components/ui/DropdownMenu";
-import { Tooltip, TooltipContent, TooltipTrigger } from "~/components/ui/Tooltip2";
-import { Building2, ChevronDown, RotateCcw, Search, User, Users } from "lucide-react";
+import { Building2, RotateCcw, Search, User, Users } from "lucide-react";
 import { LoadingIcon } from "~/components/ui/icon/Loading";
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { useLocalize } from "~/hooks";
 import { cn } from "~/utils";
+import { PermissionLevelMenu } from "./PermissionLevelMenu";
 import { RelationModelOption } from "./RelationSelect";
-
-// Tooltip that only shows when the wrapped element's text is truncated.
-function TruncatedTooltip({
-  content,
-  className,
-  as: Tag = "span",
-  children,
-}: {
-  content: string;
-  className?: string;
-  as?: "span" | "p" | "div";
-  children: React.ReactNode;
-}) {
-  const ref = useRef<HTMLElement | null>(null);
-  const [open, setOpen] = useState(false);
-
-  const handleOpenChange = (next: boolean) => {
-    if (!next) {
-      setOpen(false);
-      return;
-    }
-    const el = ref.current;
-    if (el && (el.scrollWidth > el.clientWidth || el.scrollHeight > el.clientHeight)) {
-      setOpen(true);
-    }
-  };
-
-  return (
-    <Tooltip open={open} onOpenChange={handleOpenChange}>
-      <TooltipTrigger asChild>
-        <Tag ref={ref as React.LegacyRef<any>} className={className}>{children}</Tag>
-      </TooltipTrigger>
-      <TooltipContent side="top" className="z-[120] max-w-xs break-all">
-        {content}
-      </TooltipContent>
-    </Tooltip>
-  );
-}
+import { TruncatedTooltip } from "./TruncatedTooltip";
 
 const SUBJECT_ICONS = {
   user: User,
@@ -596,61 +552,20 @@ export function PermissionListTab({
                     </TruncatedTooltip>
 
                     <div className="flex w-[136px] shrink-0 items-center justify-end gap-1">
-                      {(canModifyEntry && (!isOwner || canManageOwnerEntry)) || canDeleteEntrySubject ? (
-                        <DropdownMenu>
-                          <DropdownMenuTrigger asChild>
-                            <button
-                              type="button"
-                              className="inline-flex h-8 w-[96px] items-center justify-end gap-1 rounded-md px-2 text-[14px] leading-[22px] text-[#999999] transition-colors hover:bg-[#F7F7F7]"
-                            >
-                              <span className="truncate">{getPermissionLabel(entry)}</span>
-                              <ChevronDown className="size-3.5 shrink-0 text-[#999999]" />
-                            </button>
-                          </DropdownMenuTrigger>
-                          <DropdownMenuContent
-                            align="end"
-                            className="z-[120] max-h-[240px] w-[100px] overflow-x-hidden overflow-y-auto overscroll-none rounded-lg border-0 bg-white p-1 shadow-[0px_6px_20px_1px_rgba(117,145,212,0.12)] scrollbar-hide [&::-webkit-scrollbar]:!w-0 [&::-webkit-scrollbar]:!h-0"
-                          >
-                            {canModifyEntry && (!isOwner || canManageOwnerEntry) && entryModelOptions.map((model) => {
-                              const active = model.id === currentModelId;
-                              return (
-                                <DropdownMenuItem
-                                  key={model.id}
-                                  className={cn(
-                                    "rounded-md px-2 py-[5px] text-[14px] leading-[22px]",
-                                    active
-                                      ? "bg-blue-500/[0.07] text-blue-500 data-[highlighted]:bg-blue-500/[0.07] data-[highlighted]:text-blue-500"
-                                      : "text-[#212121] data-[highlighted]:bg-[#F7F7F7] data-[highlighted]:text-[#212121]",
-                                  )}
-                                  onSelect={() => {
-                                    void handleModify(entry, model.id);
-                                  }}
-                                >
-                                  {model.name}
-                                </DropdownMenuItem>
-                              );
-                            })}
-                            {canModifyEntry && (!isOwner || canManageOwnerEntry) && canDeleteEntrySubject && (
-                              <DropdownMenuSeparator className="my-1 bg-[#EBECF0]" />
-                            )}
-                            {canDeleteEntrySubject && (
-                              <DropdownMenuItem
-                                aria-label={localize("com_permission.remove")}
-                                className="rounded-md px-2 py-[5px] text-[14px] leading-[22px] text-[#F53F3F] data-[highlighted]:bg-[#FFF2F0] data-[highlighted]:text-[#F53F3F]"
-                                onSelect={() => {
-                                  void handleDeleteSubject(entry);
-                                }}
-                              >
-                                {localize("com_permission.remove")}
-                              </DropdownMenuItem>
-                            )}
-                          </DropdownMenuContent>
-                        </DropdownMenu>
-                      ) : (
-                        <span className="inline-flex h-8 w-[96px] shrink-0 items-center justify-end whitespace-nowrap px-2 text-[14px] leading-[22px] text-[#999999]">
-                          {getPermissionLabel(entry)}
-                        </span>
-                      )}
+                      <PermissionLevelMenu
+                        label={getPermissionLabel(entry)}
+                        options={entryModelOptions}
+                        activeId={currentModelId}
+                        canChangeLevel={canModifyEntry && (!isOwner || canManageOwnerEntry)}
+                        onChange={(modelId) => {
+                          void handleModify(entry, modelId);
+                        }}
+                        onRemove={canDeleteEntrySubject
+                          ? () => {
+                            void handleDeleteSubject(entry);
+                          }
+                          : undefined}
+                      />
                     </div>
                   </div>
                 );
diff --git a/src/frontend/client/src/components/permission/TruncatedTooltip.tsx b/src/frontend/client/src/components/permission/TruncatedTooltip.tsx
new file mode 100644
index 0000000000..f2a523b812
--- /dev/null
+++ b/src/frontend/client/src/components/permission/TruncatedTooltip.tsx
@@ -0,0 +1,48 @@
+import type { ReactNode } from "react";
+import { useRef, useState } from "react";
+import { Tooltip, TooltipContent, TooltipTrigger } from "~/components/ui/Tooltip2";
+
+interface TruncatedTooltipProps {
+  /** Full text, shown only when the rendered element is actually clipped. */
+  content: string;
+  className?: string;
+  as?: "span" | "p" | "div";
+  children: ReactNode;
+}
+
+/**
+ * Tooltip that stays silent unless the wrapped text is truncated — so rows that
+ * fit never fire a hover popup.
+ */
+export function TruncatedTooltip({
+  content,
+  className,
+  as: Tag = "span",
+  children,
+}: TruncatedTooltipProps) {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any -- polymorphic `as`: no single element type covers span/p/div refs
+  const ref = useRef<any>(null);
+  const [open, setOpen] = useState(false);
+
+  const handleOpenChange = (next: boolean) => {
+    if (!next) {
+      setOpen(false);
+      return;
+    }
+    const el = ref.current;
+    if (el && (el.scrollWidth > el.clientWidth || el.scrollHeight > el.clientHeight)) {
+      setOpen(true);
+    }
+  };
+
+  return (
+    <Tooltip open={open} onOpenChange={handleOpenChange}>
+      <TooltipTrigger asChild>
+        <Tag ref={ref} className={className}>{children}</Tag>
+      </TooltipTrigger>
+      <TooltipContent side="top" className="z-[120] max-w-xs break-all">
+        {content}
+      </TooltipContent>
+    </Tooltip>
+  );
+}
diff --git a/src/frontend/client/src/components/permission/UnifiedPermissionControls.tsx b/src/frontend/client/src/components/permission/UnifiedPermissionControls.tsx
index ac75958c47..bb59908221 100644
--- a/src/frontend/client/src/components/permission/UnifiedPermissionControls.tsx
+++ b/src/frontend/client/src/components/permission/UnifiedPermissionControls.tsx
@@ -3,6 +3,7 @@ import * as RadioGroup from "@radix-ui/react-radio-group";
 import { Outlined } from "bisheng-icons";
 import type { ComponentType, ReactNode } from "react";
 import { Switch } from "~/components/ui/Switch";
+import { TruncatedTooltip } from "./TruncatedTooltip";
 
 export type SettingsSectionKind = "basic" | "advanced" | "permission";
 
@@ -26,7 +27,7 @@ export function SettingsSectionHeader({
 }: SettingsSectionHeaderProps) {
   const Icon = SECTION_ICONS[kind];
   return (
-    <div className="flex h-8 items-center gap-2 rounded-md bg-fill-2 px-3 text-body-sm font-medium text-text-1">
+    <div className="flex h-8 items-center gap-2 rounded-md bg-fill-1 px-3 text-body-sm font-medium text-text-1">
       <Icon className="size-4 text-blue-500" />
       <span>{title}</span>
     </div>
@@ -75,7 +76,7 @@ export function AccessModeSelector({
       {options.map((option) => (
         <label
           key={option.value}
-          className="flex min-h-12 cursor-pointer items-center gap-2 rounded-xl border border-border-base px-3 text-body text-text-1 has-[[data-disabled]]:cursor-not-allowed has-[[data-disabled]]:opacity-60"
+          className="flex min-h-12 cursor-pointer items-center gap-2 rounded-xl border border-border-base px-3 text-body text-text-1 transition-colors hover:bg-fill-1 has-[[data-state=checked]]:bg-blue-500/[0.07] has-[[data-disabled]]:cursor-not-allowed has-[[data-disabled]]:opacity-60 has-[[data-disabled]]:hover:bg-transparent"
         >
           <RadioGroup.Item
             value={option.value}
@@ -83,10 +84,13 @@ export function AccessModeSelector({
           >
             <RadioGroup.Indicator className="size-1 rounded-full bg-fill-1" />
           </RadioGroup.Item>
-          <span className="font-medium">{option.label}</span>
-          <span className="min-w-0 truncate text-[#999999]">
+          <span className="shrink-0 whitespace-nowrap font-medium">{option.label}</span>
+          <TruncatedTooltip
+            content={option.description}
+            className="min-w-0 truncate text-[#999999]"
+          >
             {option.description}
-          </span>
+          </TruncatedTooltip>
         </label>
       ))}
     </RadioGroup.Root>
diff --git a/src/frontend/client/src/components/permission/permissionDialogStyles.ts b/src/frontend/client/src/components/permission/permissionDialogStyles.ts
new file mode 100644
index 0000000000..429c313f33
--- /dev/null
+++ b/src/frontend/client/src/components/permission/permissionDialogStyles.ts
@@ -0,0 +1,42 @@
+/**
+ * Shared chrome for the permission dialogs.
+ *
+ * Extracted verbatim from KnowledgeSpaceShareDialog, which shipped the original
+ * "新增授权" dialog. The unified-permission draft picker reuses these so both
+ * dialogs stay pixel-identical instead of drifting into two look-alikes.
+ */
+
+/** Dialog shell: fixed 80vh card on desktop, full-screen sheet under 768px. */
+export const PERMISSION_DIALOG_CONTENT_CLASS =
+  "!flex h-[80vh] max-h-[800px] w-[calc(100vw-80px)] max-w-[800px] min-w-0 flex-col gap-0 overflow-hidden p-5 max-[768px]:fixed max-[768px]:inset-0 max-[768px]:h-[100dvh] max-[768px]:max-h-[100dvh] max-[768px]:w-full max-[768px]:max-w-none max-[768px]:translate-x-0 max-[768px]:translate-y-0 max-[768px]:rounded-none max-[768px]:p-4";
+
+/** Subject-type switcher: bordered pill group, brand-tinted active segment. */
+export const SUBJECT_TAB_LIST_CLASS =
+  "w-fit shrink-0 rounded-md border border-[#ECECEC] bg-white p-[3px] shadow-none";
+
+export const SUBJECT_TAB_TRIGGER_CLASS =
+  "min-w-0 rounded-[4px] px-3 py-0.5 text-[14px] font-normal leading-[22px] text-[#818181] shadow-none data-[state=active]:bg-[rgb(var(--brand-500)/0.15)] data-[state=active]:font-medium data-[state=active]:text-blue-500 data-[state=active]:shadow-none";
+
+/**
+ * Same switcher rendered with plain buttons instead of Radix Tabs — used where
+ * the active segment is driven by external state. Wrap them in
+ * `inline-flex items-center justify-center ${SUBJECT_TAB_LIST_CLASS}`.
+ */
+export const SUBJECT_TAB_BUTTON_CLASS =
+  "min-w-0 rounded-[4px] px-3 py-0.5 text-[14px] leading-[22px] transition-colors";
+
+export const SUBJECT_TAB_BUTTON_ACTIVE_CLASS =
+  "bg-[rgb(var(--brand-500)/0.15)] font-medium text-blue-500";
+
+export const SUBJECT_TAB_BUTTON_INACTIVE_CLASS = "font-normal text-[#818181]";
+
+/** "包含子部门" toggle sitting next to the tab group. */
+export const INCLUDE_CHILDREN_LABEL_CLASS =
+  "flex shrink-0 cursor-pointer items-center gap-2 text-[14px] leading-[22px] text-[#212121]";
+
+export const INCLUDE_CHILDREN_CHECKBOX_CLASS =
+  "border-[#D9D9D9] data-[state=checked]:border-primary data-[state=indeterminate]:border-primary";
+
+/** Muted caption used by the footer labels ("已选用户:", "统一授权:"). */
+export const PERMISSION_FOOTER_LABEL_CLASS =
+  "shrink-0 text-[14px] font-normal leading-[22px] text-[#999999]";
diff --git a/src/frontend/client/src/locales/en/translation.json b/src/frontend/client/src/locales/en/translation.json
index f7ef802cad..20d7824b52 100644
--- a/src/frontend/client/src/locales/en/translation.json
+++ b/src/frontend/client/src/locales/en/translation.json
@@ -1867,6 +1867,7 @@
     "add_authorization": "Add permission",
     "advanced_settings": "Advanced settings",
     "authorization": "Permissions",
+    "authorization_empty": "No authorized subjects for this type yet",
     "basic_settings": "Basic settings",
     "cancel": "Cancel",
     "confirm_create": "Create",
diff --git a/src/frontend/client/src/locales/ja/translation.json b/src/frontend/client/src/locales/ja/translation.json
index 5e72ae11bb..8018677f15 100644
--- a/src/frontend/client/src/locales/ja/translation.json
+++ b/src/frontend/client/src/locales/ja/translation.json
@@ -1790,6 +1790,7 @@
     "add_authorization": "権限を追加",
     "advanced_settings": "詳細設定",
     "authorization": "権限",
+    "authorization_empty": "現在のタイプに権限対象はまだありません",
     "basic_settings": "基本設定",
     "cancel": "キャンセル",
     "confirm_create": "作成を確定",
diff --git a/src/frontend/client/src/locales/zh-Hans/translation.json b/src/frontend/client/src/locales/zh-Hans/translation.json
index ebed23da2c..b50722f3c5 100644
--- a/src/frontend/client/src/locales/zh-Hans/translation.json
+++ b/src/frontend/client/src/locales/zh-Hans/translation.json
@@ -1796,6 +1796,7 @@
     "add_authorization": "新增授权",
     "advanced_settings": "高级设置",
     "authorization": "授权",
+    "authorization_empty": "当前类型下暂无授权对象",
     "basic_settings": "基础设置",
     "cancel": "取消",
     "confirm_create": "确认创建",
diff --git a/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelBusinessSettings.tsx b/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelBusinessSettings.tsx
index 90e0f6beb3..7c633bb40f 100644
--- a/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelBusinessSettings.tsx
+++ b/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelBusinessSettings.tsx
@@ -1,4 +1,5 @@
-import { Outlined } from "bisheng-icons";
+// bisheng-icons has no boxed plus; SquarePlus matches the sibling "add condition" button.
+import { SquarePlus } from "lucide-react";
 import type { ComponentProps } from "react";
 import { NotificationSeverity } from "~/common";
 import {
@@ -183,7 +184,7 @@ export function ChannelBusinessSettings({
             />
             {form.createSubChannel && (
               <div
-                className="overflow-hidden rounded-lg border border-border-base bg-white"
+                className="divide-y divide-border-base overflow-hidden rounded-lg border border-border-base bg-white"
                 data-testid="sub-channel-list"
               >
                 {form.subChannels.map((subChannel) => (
@@ -219,9 +220,12 @@ export function ChannelBusinessSettings({
                   <button
                     type="button"
                     onClick={form.handleAddSubChannel}
-                    className="flex h-12 w-full items-center gap-2 bg-fill-2 px-4 text-body text-text-2 hover:bg-fill-3"
+                    className="flex h-12 w-full items-center gap-3 bg-[#F8F8F8] px-4 text-left text-body text-text-1 transition-colors hover:bg-fill-2"
                   >
-                    <Outlined.Plus className="size-4" />
+                    <SquarePlus
+                      className="size-4 shrink-0 text-text-2"
+                      strokeWidth={1.5}
+                    />
                     {settings.localize("com_subscription.add_sub_channel")}
                   </button>
                 )}
diff --git a/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelSettingsPage.tsx b/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelSettingsPage.tsx
index 6cc72c6fcb..dbead94088 100644
--- a/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelSettingsPage.tsx
+++ b/src/frontend/client/src/pages/Subscription/ChannelSettings/ChannelSettingsPage.tsx
@@ -348,6 +348,7 @@ export function ChannelSettingsPage() {
         </div>
 
         <SettingsFooter
+          centered
           cancelLabel={settings.localize("com_unified_permission.cancel")}
           submitLabel={settings.localize(
             settings.isEditMode
diff --git a/src/frontend/client/src/pages/knowledge/SpaceDetail/KnowledgeSpaceShareDialog.tsx b/src/frontend/client/src/pages/knowledge/SpaceDetail/KnowledgeSpaceShareDialog.tsx
index 93575aa52e..d9970c418c 100644
--- a/src/frontend/client/src/pages/knowledge/SpaceDetail/KnowledgeSpaceShareDialog.tsx
+++ b/src/frontend/client/src/pages/knowledge/SpaceDetail/KnowledgeSpaceShareDialog.tsx
@@ -1,4 +1,14 @@
 import { useCallback, useEffect, useMemo, useState } from "react";
+import {
+    INCLUDE_CHILDREN_CHECKBOX_CLASS,
+    INCLUDE_CHILDREN_LABEL_CLASS,
+    PERMISSION_DIALOG_CONTENT_CLASS,
+    SUBJECT_TAB_BUTTON_ACTIVE_CLASS,
+    SUBJECT_TAB_BUTTON_CLASS,
+    SUBJECT_TAB_BUTTON_INACTIVE_CLASS,
+    SUBJECT_TAB_LIST_CLASS,
+    SUBJECT_TAB_TRIGGER_CLASS,
+} from "~/components/permission/permissionDialogStyles";
 import { PermissionGrantTab } from "~/components/permission/PermissionGrantTab";
 import { PermissionListTab } from "~/components/permission/PermissionListTab";
 import {
@@ -113,12 +123,12 @@ export function KnowledgeSpaceShareDialog({
             className="flex min-h-0 flex-1 flex-col"
         >
             <div className="flex items-center justify-between gap-3">
-                <TabsList className="w-fit shrink-0 rounded-md border border-[#ECECEC] bg-white p-[3px] shadow-none">
+                <TabsList className={SUBJECT_TAB_LIST_CLASS}>
                     {SUBJECT_TABS.map((tab) => (
                         <TabsTrigger
                             key={tab.value}
                             value={tab.value}
-                            className="min-w-0 rounded-[4px] px-3 py-0.5 text-[14px] font-normal leading-[22px] text-[#818181] shadow-none data-[state=active]:bg-[rgb(var(--brand-500)/0.15)] data-[state=active]:font-medium data-[state=active]:text-blue-500 data-[state=active]:shadow-none"
+                            className={SUBJECT_TAB_TRIGGER_CLASS}
                         >
                             {localize(tab.labelKey)}
                         </TabsTrigger>
@@ -160,7 +170,7 @@ export function KnowledgeSpaceShareDialog({
     return (
         <>
             <Dialog open={open} onOpenChange={onOpenChange}>
-                <DialogContent className="!flex h-[80vh] max-h-[800px] w-[calc(100vw-80px)] max-w-[800px] min-w-0 flex-col gap-0 overflow-hidden p-5 max-[768px]:fixed max-[768px]:inset-0 max-[768px]:h-[100dvh] max-[768px]:max-h-[100dvh] max-[768px]:w-full max-[768px]:max-w-none max-[768px]:translate-x-0 max-[768px]:translate-y-0 max-[768px]:rounded-none max-[768px]:p-4">
+                <DialogContent className={PERMISSION_DIALOG_CONTENT_CLASS}>
                     <DialogHeader className="shrink-0 text-left">
                         <DialogTitle className="text-left">{dialogTitle}</DialogTitle>
                     </DialogHeader>
@@ -172,7 +182,7 @@ export function KnowledgeSpaceShareDialog({
             </Dialog>
 
             <Dialog open={grantDialogOpen} onOpenChange={setGrantDialogOpen}>
-                <DialogContent className="!flex h-[80vh] max-h-[800px] w-[calc(100vw-80px)] max-w-[800px] min-w-0 flex-col gap-0 overflow-hidden p-5 max-[768px]:fixed max-[768px]:inset-0 max-[768px]:h-[100dvh] max-[768px]:max-h-[100dvh] max-[768px]:w-full max-[768px]:max-w-none max-[768px]:translate-x-0 max-[768px]:translate-y-0 max-[768px]:rounded-none max-[768px]:p-4">
+                <DialogContent className={PERMISSION_DIALOG_CONTENT_CLASS}>
                     <DialogHeader className="shrink-0 text-left">
                         <DialogTitle className="text-left">
                             {localize("com_permission.tab_grant")} - {resourceName}
@@ -181,16 +191,16 @@ export function KnowledgeSpaceShareDialog({
 
                     <div className="user-manger mt-4 flex min-h-0 flex-1 flex-col overflow-hidden">
                         <div className="flex items-center gap-3">
-                            <div className="inline-flex w-fit shrink-0 items-center justify-center rounded-md border border-[#ECECEC] bg-white p-[3px]">
+                            <div className={`inline-flex items-center justify-center ${SUBJECT_TAB_LIST_CLASS}`}>
                                 {SUBJECT_TABS.map((tab) => (
                                     <button
                                         key={tab.value}
                                         type="button"
                                         className={[
-                                            "min-w-0 rounded-[4px] px-3 py-0.5 text-[14px] leading-[22px] transition-colors",
+                                            SUBJECT_TAB_BUTTON_CLASS,
                                             grantSubjectType === tab.value
-                                                ? "bg-[rgb(var(--brand-500)/0.15)] font-medium text-blue-500"
-                                                : "font-normal text-[#818181]",
+                                                ? SUBJECT_TAB_BUTTON_ACTIVE_CLASS
+                                                : SUBJECT_TAB_BUTTON_INACTIVE_CLASS,
                                         ].join(" ")}
                                         onClick={() => setGrantSubjectType(tab.value)}
                                     >
@@ -200,9 +210,9 @@ export function KnowledgeSpaceShareDialog({
                             </div>
 
                             {grantSubjectType === "department" && (
-                                <label className="flex shrink-0 cursor-pointer items-center gap-2 text-[14px] leading-[22px] text-[#212121]">
+                                <label className={INCLUDE_CHILDREN_LABEL_CLASS}>
                                     <Checkbox
-                                        className="border-[#D9D9D9] data-[state=checked]:border-primary data-[state=indeterminate]:border-primary"
+                                        className={INCLUDE_CHILDREN_CHECKBOX_CLASS}
                                         checked={grantIncludeChildren}
                                         onCheckedChange={(value) => setGrantIncludeChildren(value === true)}
                                     />
diff --git a/src/frontend/client/src/pages/knowledge/SpaceSettings/KnowledgeSpaceSettingsPage.tsx b/src/frontend/client/src/pages/knowledge/SpaceSettings/KnowledgeSpaceSettingsPage.tsx
index 8499ad97ff..a32c9bdc24 100644
--- a/src/frontend/client/src/pages/knowledge/SpaceSettings/KnowledgeSpaceSettingsPage.tsx
+++ b/src/frontend/client/src/pages/knowledge/SpaceSettings/KnowledgeSpaceSettingsPage.tsx
@@ -230,7 +230,7 @@ export function KnowledgeSpaceSettingsPage() {
 
   return (
     <main
-      className="flex h-full min-h-0 bg-white p-2"
+      className="flex h-full min-h-0 bg-white"
       data-testid="knowledge-space-settings-page"
     >
       <div className="flex min-h-0 w-full flex-1 flex-col rounded-xl bg-white px-4 pt-4">
@@ -553,7 +553,7 @@ export function KnowledgeSpaceSettingsPage() {
         </div>
 
         <SettingsFooter
-          centered={settings.mode === "create"}
+          centered
           cancelLabel={localize("com_unified_permission.cancel")}
           submitLabel={localize(
             settings.mode === "create"