fix(user-center): load revenue tabs without refresh

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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

@@ -25,7 +25,7 @@
     display: none;
   }
 
-  .uc-mobile-tabs button {
+  .uc-mobile-tabs a {
     flex-shrink: 0;
     white-space: nowrap;
     padding: 8px 14px;
@@ -35,16 +35,13 @@
     color: var(--color-ink-3);
     font-size: 13px;
     font-weight: 500;
+    text-decoration: none;
     cursor: pointer;
     transition: all 0.2s ease;
   }
 
-  .uc-mobile-tabs button:hover {
-    background: var(--surface-2);
-    color: var(--color-ink);
-  }
-
-  .uc-mobile-tabs button.is-active {
+  .uc-mobile-tabs a:hover,
+  .uc-mobile-tabs a.is-active {
     background: var(--color-primary-soft);
     color: var(--color-primary);
     font-weight: 600;