diff --git a/stash-web/src/App.css b/stash-web/src/App.css
index 3477ded..b881d65 100644
--- a/stash-web/src/App.css
+++ b/stash-web/src/App.css
@@ -975,22 +975,51 @@
   gap: var(--su-space-2);
 }
 
+/* 折叠箭头：与前台侧栏 Menu 的 caret 同一套画法（CSS 画的 6px 角标） */
 .group-caret {
-  width: 20px;
+  display: inline-flex;
   flex: none;
+  align-items: center;
+  justify-content: center;
+  width: 20px;
+  height: 20px;
   padding: 0;
   border: none;
   background: none;
   color: var(--su-text-muted);
-  font-size: var(--su-font-size-sm);
-  line-height: 1;
   cursor: pointer;
 }
 
+.group-caret::before {
+  content: '';
+  width: 6px;
+  height: 6px;
+  border-left: 1px solid currentColor;
+  border-bottom: 1px solid currentColor;
+  opacity: 0.4;
+  transform: rotate(315deg);
+  transition:
+    transform var(--su-duration-base) var(--su-ease-in-out),
+    opacity var(--su-duration-base) var(--su-ease-in-out);
+}
+
+.group-caret:hover::before {
+  opacity: 0.7;
+}
+
+.group-caret-open::before {
+  opacity: 0.7;
+  transform: rotate(135deg);
+}
+
 .group-caret-empty {
   cursor: default;
 }
 
+.group-caret-empty::before {
+  display: none;
+}
+
 /* 分组图标选择：搜索 + 图标网格 */
 .icon-picker {
   display: flex;
@@ -1080,12 +1109,16 @@
 }
 
 .group-action {
+  display: inline-flex;
+  align-items: center;
+  gap: var(--su-space-1);
   padding: 0;
   border: none;
   background: none;
   color: var(--su-color-primary);
   font-size: var(--su-font-size-sm);
   cursor: pointer;
+  white-space: nowrap;
 }
 
 .group-action:hover {
diff --git a/stash-web/src/components/admin/AdminNext.tsx b/stash-web/src/components/admin/AdminNext.tsx
index 54c5ab7..b9f33e2 100644
--- a/stash-web/src/components/admin/AdminNext.tsx
+++ b/stash-web/src/components/admin/AdminNext.tsx
@@ -22,7 +22,7 @@ import {
   toast,
   type IconName,
 } from '@stash/ui'
-import { useEffect, useMemo, useState } from 'react'
+import { useEffect, useMemo, useRef, useState } from 'react'
 import { changePassword, fetchSession, logout, type SessionState } from '../../auth'
 import { LoginDialog } from '../auth/LoginDialog'
 import { GroupMark as GroupGlyph } from '../common/GroupMark'
@@ -495,6 +495,24 @@ function GroupsPanel({
   const [collapsed, setCollapsed] = useState<Set<string>>(new Set())
   const [dialog, setDialog] = useState<GroupDialogState>(null)
 
+  // 默认全部收起：数据第一次到位时，把所有有子节点的分组塞进 collapsed
+  const seeded = useRef(false)
+  useEffect(() => {
+    if (seeded.current || groups.length === 0) return
+    seeded.current = true
+    const keys = new Set<string>()
+    const walk = (nodes: GroupNode[]) => {
+      for (const node of nodes) {
+        if (node.children.length > 0) {
+          keys.add(node.key)
+          walk(node.children)
+        }
+      }
+    }
+    walk(groups)
+    setCollapsed(keys)
+  }, [groups])
+
   const rows = useMemo(() => {
     const result: { node: GroupNode; level: number }[] = []
     const walk = (nodes: GroupNode[], level: number) => {
@@ -529,7 +547,7 @@ function GroupsPanel({
   return (
     <Space direction="column" gap="md" align="stretch" className="admin-form">
       <Text size="sm" tone="muted">
-        分组用于控制前台侧边栏与卡片；可多层嵌套，根分组决定格式。内容（条目）只挂在分组上。
+        说明：分组用于控制前台侧边栏与卡片；可多层嵌套，根分组决定格式。内容（条目）只挂在分组上。
       </Text>
 
       <div className="group-toolbar">
@@ -563,12 +581,11 @@ function GroupsPanel({
                       {hasChildren ? (
                         <button
                           type="button"
-                          className="group-caret"
+                          className={`group-caret${open ? ' group-caret-open' : ''}`}
                           aria-label={open ? `折叠 ${node.title}` : `展开 ${node.title}`}
+                          aria-expanded={open}
                           onClick={() => toggle(node.key)}
-                        >
-                          {open ? '▾' : '▸'}
-                        </button>
+                        />
                       ) : (
                         <span className="group-caret group-caret-empty" aria-hidden="true" />
                       )}
@@ -593,13 +610,15 @@ function GroupsPanel({
                         className="group-action"
                         onClick={() => setDialog({ mode: 'child', parent: node })}
                       >
-                        加子分组
+                        <Icon name="add_line" />
+                        新建子分组
                       </button>
                       <button
                         type="button"
                         className="group-action"
                         onClick={() => setDialog({ mode: 'edit', group: node })}
                       >
+                        <Icon name="edit_4_line" />
                         编辑
                       </button>
                       <button
@@ -607,6 +626,7 @@ function GroupsPanel({
                         className="group-action group-action-danger"
                         onClick={() => onDelete(node.key, node.title)}
                       >
+                        <Icon name="delete_2_line" />
                         删除
                       </button>
                     </div>