fix(user-center): restore page-owned dual-column sidebar layout

User center left nav (stats/services/commerce) stacked or hid after
content-layout lost its grid and the site float shell treated the
nested .sidebar as a widget column. Scope a CSS grid under
body.aksrt-user-center, neutralize site-layout float/hide, align the
drawer to ≤991.98, and drop the truncated #panel-credits selector.

assets/css/routes/user-center/responsive.css

@@ -51,30 +51,43 @@
   }
 }
 
-/* ==================== 响应式 ==================== */
-@media (max-width: 767px) {
-  .uc-sidebar {
+/* ==================== 响应式抽屉（对齐全站 ≤991 隐藏点，覆盖 display:none） ==================== */
+@media (max-width: 991.98px) {
+  body.aksrt-user-center .aksrt-profile__layout {
+    display: block;
+  }
+
+  /* 覆盖 layout.css / sidebar.css 的 .sidebar { display:none } 与 .content-layout__aside hide */
+  body.aksrt-user-center .sidebar.page-owned.uc-sidebar,
+  body.aksrt-user-center .content-layout__aside.page-owned {
+    display: flex;
+    float: none;
+    width: 270px;
+    margin-left: 0;
+    margin-right: 0;
+  }
+
+  body.aksrt-user-center .sidebar.page-owned.uc-sidebar {
     position: fixed;
     top: 0;
     left: -280px;
     bottom: 0;
-    width: 270px;
     z-index: 300;
     background: var(--surface-1);
     padding: 0;
     overflow-y: auto;
     overflow-x: hidden;
     transition: left 0.3s cubic-bezier(0.22, 1, 0.36, 1);
-    box-shadow: 4px 0 24px rgba(0,0,0,0.12);
+    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.12);
     gap: 0;
   }
 
-  .uc-sidebar.is-open {
+  body.aksrt-user-center .sidebar.page-owned.uc-sidebar.is-open {
     left: 0;
   }
 
   /* 抽屉头部 */
-  .uc-sidebar::before {
+  body.aksrt-user-center .sidebar.page-owned.uc-sidebar::before {
     content: '';
     display: block;
     height: 100px;
@@ -82,24 +95,26 @@
     flex-shrink: 0;
   }
 
-  .uc-sidebar__section {
+  body.aksrt-user-center .uc-sidebar__section {
     border-radius: 0;
     border-left: none;
     border-right: none;
     box-shadow: none;
   }
 
-  .uc-sidebar__section:first-of-type {
+  body.aksrt-user-center .uc-sidebar__section:first-of-type {
     margin-top: -20px;
     position: relative;
     z-index: 1;
     border-radius: 12px 12px 0 0;
   }
 
-  .uc-sidebar__drawer-trigger {
+  body.aksrt-user-center .uc-sidebar__drawer-trigger {
     display: flex;
   }
+}
 
+@media (max-width: 767px) {
   .uc-content .dashboard-panel {
     padding: 16px;
   }