优化快捷回复功能

frontend/src/layouts/AdminLayout.vue

@@ -133,12 +133,16 @@ async function handleLogout() {
 <style scoped>
 .admin-shell {
   display: flex;
+  height: 100vh;
   min-height: 100vh;
   background-color: #f5f7fa;
+  overflow: hidden;
 }
 
 .admin-sidebar {
   width: 220px;
+  height: 100vh;
+  flex: none;
   background-color: #304156;
   transition: width 0.3s ease;
   display: flex;
@@ -199,8 +203,11 @@ async function handleLogout() {
 
 .admin-menu {
   flex: 1;
+  min-height: 0;
   border-right: none;
   background-color: transparent;
+  overflow-y: auto;
+  overflow-x: hidden;
 }
 
 .admin-menu:not(.el-menu--collapse) {
@@ -222,6 +229,9 @@ async function handleLogout() {
 
 .admin-workspace {
   flex: 1;
+  min-width: 0;
+  min-height: 0;
+  height: 100vh;
   display: flex;
   flex-direction: column;
   overflow: hidden;
@@ -229,6 +239,7 @@ async function handleLogout() {
 
 .admin-topbar {
   height: 56px;
+  flex: none;
   display: flex;
   align-items: center;
   justify-content: space-between;
@@ -261,6 +272,7 @@ async function handleLogout() {
 
 .admin-main {
   flex: 1;
+  min-height: 0;
   padding: 24px;
   overflow-y: auto;
 }