fix(frontend): use single header logo

Author: tranhoangpich

apps/frontend/src/app/globals.css

@@ -95,13 +95,12 @@ body {
   border-radius: 14px;
   font-weight: 700;
   color: var(--ios-ink);
-  background: linear-gradient(135deg, var(--ios-purple), var(--ios-teal));
-  box-shadow: var(--ios-glow);
+  background: transparent;
 }
 
 .logo-mark img {
-  width: 72%;
-  height: 72%;
+  width: 100%;
+  height: 100%;
   object-fit: contain;
 }