fix(navigation): restore header VIP CTA gradient

assets/css/build/public.css

@@ -2886,6 +2886,13 @@ main.container,
   padding: 6px;
 }
 
+/* The later .but compatibility layer otherwise replaces the legacy payvip surface. */
+.aksrt-header-userbox .pay-vip.but.payvip-icon {
+  background: linear-gradient(300deg, #4c4d51, #2a2a31 15%, #85858a 40%, #393a3c 60%, #393838 80%, #5e5f62 100%);
+  color: #ece0e0;
+  --this-color: #ece0e0;
+}
+
 /* Keep the header check-in action flush with the VIP row's padded inner width. */
 .aksrt-header-userbox > .mt6.em09 > .but.block {
   display: block;