diff --git a/assets/css/routes/profile/layout.css b/assets/css/routes/profile/layout.css
index 3f6c626b..51e95f03 100644
--- a/assets/css/routes/profile/layout.css
+++ b/assets/css/routes/profile/layout.css
@@ -470,18 +470,10 @@
 }
 
 
-/* 用户中心复用全站 content-layout，避免嵌套网格与双卡片负边距抵消。 */
+/* 用户中心 layout 间距；双栏 / sticky 见 user-center/shell.css（body.aksrt-user-center）。 */
 .aksrt-profile__layout {
   margin-top: 20px;
 }
-.aksrt-profile__aside.page-owned {
-  position: static;
-}
-@media (min-width: 992px) {
-  .aksrt-profile__aside.page-owned {
-    position: sticky;
-  }
-}
 .aksrt-user-center__notice {
   margin-bottom: 16px;
   padding: 12px 14px;
diff --git a/assets/css/routes/user-center/responsive.css b/assets/css/routes/user-center/responsive.css
index d03f26cd..61fdffbb 100644
--- a/assets/css/routes/user-center/responsive.css
+++ b/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;
   }
diff --git a/assets/css/routes/user-center/shell.css b/assets/css/routes/user-center/shell.css
index e375fc3e..683ee2f4 100644
--- a/assets/css/routes/user-center/shell.css
+++ b/assets/css/routes/user-center/shell.css
@@ -25,6 +25,64 @@
   padding: 0 0 40px;
 }
 
+/* ==================== 页面自有双栏（page-owned，非全站 float 壳） ==================== */
+/* DOM: content first + aside second；桌面用 grid-area 把 aside 放左侧。 */
+body.aksrt-user-center .aksrt-profile__layout {
+  display: block;
+  width: 100%;
+  margin-left: 0;
+  margin-right: 0;
+  min-width: 0;
+}
+
+/* 中和 site-layout-2/3 对 content-layout 的 margin 挖空 */
+body.aksrt-user-center.site-layout-1 .aksrt-profile__layout,
+body.aksrt-user-center.site-layout-2 .aksrt-profile__layout,
+body.aksrt-user-center.site-layout-3 .aksrt-profile__layout {
+  margin-left: 0;
+  margin-right: 0;
+}
+
+/* 私有导航：中和 body.site-layout-1 .sidebar { display:none } 与 float 几何 */
+body.aksrt-user-center .sidebar.page-owned.uc-sidebar {
+  float: none;
+  width: auto;
+  margin-left: 0;
+  margin-right: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  box-sizing: border-box;
+  min-width: 0;
+}
+
+@media (min-width: 992px) {
+  body.aksrt-user-center .aksrt-profile__layout {
+    display: grid;
+    grid-template-columns: var(--sidebar-width, 311px) minmax(0, 1fr);
+    grid-template-areas: "aside primary";
+    gap: 20px;
+    align-items: start;
+  }
+
+  body.aksrt-user-center .aksrt-profile__layout > .uc-content,
+  body.aksrt-user-center .aksrt-profile__layout > .content-layout__primary {
+    grid-area: primary;
+    min-width: 0;
+    width: auto;
+  }
+
+  body.aksrt-user-center .aksrt-profile__layout > .uc-sidebar,
+  body.aksrt-user-center .aksrt-profile__layout > .aksrt-profile__aside {
+    grid-area: aside;
+  }
+
+  body.aksrt-user-center .sidebar.page-owned.uc-sidebar {
+    position: sticky;
+    top: calc(var(--nav-height, 60px) + 20px);
+  }
+}
+
 .uc-header__actions {
   position: relative;
 }
@@ -45,9 +103,8 @@
   line-height: 1;
 }
 /* ==================== 左侧边栏 ==================== */
+/* sticky / 双栏位置由 body.aksrt-user-center .sidebar.page-owned 负责；此处只定 chrome 布局 */
 .uc-sidebar {
-  position: sticky;
-  top: 80px;
   display: flex;
   flex-direction: column;
   gap: 12px;
@@ -304,5 +361,3 @@
   padding-top: 18px;
   border-top: 1px solid var(--color-line-soft, rgba(0,0,0,0.06));
 }
-
-.uc-content #panel-credits