link页面的标题栏的蓝色改为白色

lib/ui/pages/link_page.dart

@@ -22,12 +22,21 @@ class LinkPage extends StatelessWidget {
         builder: (ctx, state) {
           final scaffold = Scaffold(
             appBar: AppBar(
-              title: Text(state.title, style: TextStyle(color: Colors.white, fontSize: 18)),
+              title: Text(
+                state.title,
+                style: const TextStyle(
+                  color: Color(0xFF333333),
+                  fontSize: 16,
+                  fontWeight: FontWeight.bold,
+                  height: 20 / 16,
+                ),
+              ),
               centerTitle: true,
-              backgroundColor: Color(0xFF7691FA),
-              iconTheme: IconThemeData(color: Colors.white),
+              backgroundColor: Colors.white,
+              elevation: 0,
+              iconTheme: IconThemeData(color: Colors.black),
               leading: IconButton(
-                icon: const Icon(Icons.arrow_back, color: Colors.white),
+                icon: const Icon(Icons.arrow_back, color: Colors.black),
                 onPressed: () {
                   ctx.read<LinkCubit>().handleBack();
                 },