fix(vip): render membership icons without wrappers

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

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

@@ -24,9 +24,9 @@
   padding-inline-end: 84px;
   overflow: hidden;
   box-sizing: border-box;
-  border-radius: var(--radius, 8px);
-  background: #fff;
-  box-shadow: var(--shadow-sm);
+  border-radius: 0;
+  background: transparent;
+  box-shadow: none;
   color: var(--color-ink-2);
 }
 
@@ -112,11 +112,11 @@
   display: inline-flex;
   align-items: center;
   justify-content: center;
-  width: 36px;
-  height: 36px;
+  width: auto;
+  height: auto;
   flex: 0 0 auto;
-  border-radius: 50%;
-  background: var(--vip-card-soft);
+  border-radius: 0;
+  background: transparent;
   color: var(--vip-card-accent);
   font-size: 15px;
 }