diff --git a/app/Http/Controllers/Api/ApplicationController.php b/app/Http/Controllers/Api/ApplicationController.php
index 263c2de..5fd0244 100644
--- a/app/Http/Controllers/Api/ApplicationController.php
+++ b/app/Http/Controllers/Api/ApplicationController.php
@@ -268,7 +268,7 @@ class ApplicationController extends Controller
 
         $app->load(['files']);
 
-        return response()->json($this->transform($app, false));
+        return response()->json($this->transform($app, false, false));
     }
 
     public function submit(Request $request): JsonResponse
@@ -610,7 +610,7 @@ class ApplicationController extends Controller
         return $payload;
     }
 
-    private function transform(Application $app, bool $includeSignature = true): array
+    private function transform(Application $app, bool $includeSignature = true, bool $prefillBlanksFromUser = true): array
     {
         $payload = array_merge([
             'id' => $app->id,
@@ -640,7 +640,7 @@ class ApplicationController extends Controller
             $payload['promise_signature'] = $app->promise_signature;
         }
 
-        return $this->applySignupPrefillSources($app, $payload);
+        return $prefillBlanksFromUser ? $this->applySignupPrefillSources($app, $payload) : $payload;
     }
 
     private function normalizeSignupOptionInputs(Request $request): void
diff --git a/public/frontend/assets/fonts/SmileySans-Oblique.woff2 b/public/frontend/assets/fonts/SmileySans-Oblique.woff2
deleted file mode 100644
index 0da5a7f..0000000
Binary files a/public/frontend/assets/fonts/SmileySans-Oblique.woff2 and /dev/null differ
diff --git a/public/frontend/assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2
deleted file mode 100644
index cb063de..0000000
Binary files a/public/frontend/assets/fonts/SourceHanSansSC-Heavy-gb2312.woff2 and /dev/null differ
diff --git a/public/frontend/assets/fonts/SourceHanSansSC-Medium-gb2312.woff2 b/public/frontend/assets/fonts/SourceHanSansSC-Medium-gb2312.woff2
deleted file mode 100644
index e2ed2c4..0000000
Binary files a/public/frontend/assets/fonts/SourceHanSansSC-Medium-gb2312.woff2 and /dev/null differ
diff --git a/public/frontend/event-site.html b/public/frontend/event-site.html
index fd1ba24..34c5e1b 100644
--- a/public/frontend/event-site.html
+++ b/public/frontend/event-site.html
@@ -5543,7 +5543,6 @@
       height: 100%;
       object-fit: contain;
     }
-    .hero-banner img[src^="data:"] { visibility: hidden; }
     .hero-orbit-beams {
       position: absolute;
       z-index: 8;
@@ -5650,7 +5649,7 @@
           <img src="assets/generated/hero-three-landmarks-clean-field-v16.png?v=20260826" alt="" fetchpriority="high" decoding="async">
         </div>
         <div class="hero-banner hero-banner--photonic">
-          <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="assets/generated/hero-photonic-youth-blue-purple-balanced-v7-sharp-trails-4k.jpg?v=20260826" alt="" decoding="async">
+          <img src="assets/generated/hero-photonic-youth-blue-purple-balanced-v7-sharp-trails-4k.jpg?v=20260826" alt="" decoding="async">
         </div>
       </div>
       <div class="hero-map-dots" aria-hidden="true"></div>
diff --git a/tests/Feature/ParticipantApplicationSaveTest.php b/tests/Feature/ParticipantApplicationSaveTest.php
index 3cd0526..cddfba6 100644
--- a/tests/Feature/ParticipantApplicationSaveTest.php
+++ b/tests/Feature/ParticipantApplicationSaveTest.php
@@ -37,4 +37,66 @@ class ParticipantApplicationSaveTest extends TestCase
             ->assertJsonPath('player_name', '张三')
             ->assertJsonPath('project_name', '测试项目');
     }
+
+    public function test_second_draft_save_rejects_invalid_email_and_keeps_previous_value(): void
+    {
+        $user = User::query()->create(['mobile' => '13800138089']);
+        $competition = Competition::query()->create([
+            'slug' => 'xxf-email',
+            'name' => '测试赛',
+            'published' => true,
+        ]);
+        Application::query()->create([
+            'user_id' => $user->id,
+            'competition_id' => $competition->id,
+            'status' => 'draft',
+        ]);
+
+        Sanctum::actingAs($user);
+
+        $this->postJson('/api/applications/current/save?competition_slug=xxf-email', [
+            'player_name' => '张三',
+            'contact_email' => 'ok@example.com',
+        ])
+            ->assertOk()
+            ->assertJsonPath('contact_email', 'ok@example.com');
+
+        $this->postJson('/api/applications/current/save?competition_slug=xxf-email', [
+            'player_name' => '李四',
+            'contact_email' => 'bad-email',
+        ])
+            ->assertUnprocessable()
+            ->assertJsonValidationErrors(['contact_email']);
+
+        $this->getJson('/api/applications/current?competition_slug=xxf-email')
+            ->assertOk()
+            ->assertJsonPath('player_name', '张三')
+            ->assertJsonPath('contact_email', 'ok@example.com');
+    }
+
+    public function test_draft_save_response_does_not_prefill_blank_email_from_user_profile(): void
+    {
+        $user = User::query()->create([
+            'mobile' => '13800138090',
+            'email' => 'profile@example.com',
+        ]);
+        $competition = Competition::query()->create([
+            'slug' => 'xxf-prefill',
+            'name' => '测试赛',
+            'published' => true,
+        ]);
+        Application::query()->create([
+            'user_id' => $user->id,
+            'competition_id' => $competition->id,
+            'status' => 'draft',
+        ]);
+
+        Sanctum::actingAs($user);
+
+        $this->postJson('/api/applications/current/save?competition_slug=xxf-prefill', [
+            'contact_email' => '',
+        ])
+            ->assertOk()
+            ->assertJsonPath('contact_email', null);
+    }
 }