用户中心减层：收敛本人入口与 panel 契约

assets/css/routes/user-center/part-1.css

@@ -17,16 +17,6 @@
   padding: 0 0 40px;
 }
 
-/* ==================== 两栏布局 — 对齐 zibll: 311px 侧栏 ==================== */
-.uc-layout {
-  display: grid;
-  grid-template-columns: 311px 1fr;
-  gap: 20px;
-  align-items: start;
-  width: 100%;
-}
-
-
 .uc-header__actions {
   position: relative;
 }