diff --git a/resources/views/admin/dashboard.blade.php b/resources/views/admin/dashboard.blade.php
index 1fb0d56..ae9e827 100644
--- a/resources/views/admin/dashboard.blade.php
+++ b/resources/views/admin/dashboard.blade.php
@@ -346,7 +346,8 @@
                         : '-';
 
                     // 运营提效：失败原因较短时，提供“一键进入同原因集合”链接（避免复制粘贴）。
-                    $FAILED_REASON_KEYWORD_MAX_LEN = 80;
+                    // 与平台订单列表页的阈值保持一致（避免仪表盘能点、列表页却不支持/反之）。
+                    $FAILED_REASON_KEYWORD_MAX_LEN = (int) config('saasshop.platform_orders.sync_error_keyword_link_max_len', 200);
                     $syncReasonUrl = '';
                     if ($syncErrMsg !== '' && mb_strlen($syncErrMsg) <= $FAILED_REASON_KEYWORD_MAX_LEN) {
                         $syncReasonUrl = \App\Support\BackUrl::withBack('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
diff --git a/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsSameReasonLinkShouldUseConfigMaxLenTest.php b/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsSameReasonLinkShouldUseConfigMaxLenTest.php
new file mode 100644
index 0000000..957c785
--- /dev/null
+++ b/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsSameReasonLinkShouldUseConfigMaxLenTest.php
@@ -0,0 +1,79 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Admin;
+use App\Models\Merchant;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminDashboardRecentPlatformOrdersFailedHintsSameReasonLinkShouldUseConfigMaxLenTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_dashboard_failed_hints_same_reason_link_should_use_config_max_len(): void
+    {
+        config()->set('saasshop.platform_orders.sync_error_keyword_link_max_len', 5);
+
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $platformAdminId = (int) Admin::query()->where('email', 'platform.admin@demo.local')->value('id');
+
+        // len=5：应生成“同原因集合”链接
+        PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => null,
+            'site_subscription_id' => null,
+            'created_by_admin_id' => $platformAdminId ?: null,
+            'order_no' => 'PO_DASH_SYNC_REASON_LEN5',
+            'order_type' => 'new_purchase',
+            'status' => 'pending',
+            'payment_status' => 'paid',
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now(),
+            'meta' => [
+                'subscription_activation_error' => ['message' => '12345'],
+            ],
+        ]);
+
+        // len=6：应显示“原因过长”，不生成“同原因集合”链接
+        PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => null,
+            'site_subscription_id' => null,
+            'created_by_admin_id' => $platformAdminId ?: null,
+            'order_no' => 'PO_DASH_SYNC_REASON_LEN6',
+            'order_type' => 'new_purchase',
+            'status' => 'pending',
+            'payment_status' => 'paid',
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now(),
+            'meta' => [
+                'subscription_activation_error' => ['message' => '123456'],
+            ],
+        ]);
+
+        $res = $this->get('/admin');
+        $res->assertOk();
+
+        $res->assertSee('PO_DASH_SYNC_REASON_LEN5');
+        $res->assertSee('同原因集合', false);
+
+        $res->assertSee('PO_DASH_SYNC_REASON_LEN6');
+        $res->assertSee('原因过长', false);
+    }
+}
diff --git a/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsShouldShowReasonTooLongHintWhenNoSameReasonLinkTest.php b/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsShouldShowReasonTooLongHintWhenNoSameReasonLinkTest.php
index 346b4e2..f8d244b 100644
--- a/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsShouldShowReasonTooLongHintWhenNoSameReasonLinkTest.php
+++ b/tests/Feature/AdminDashboardRecentPlatformOrdersFailedHintsShouldShowReasonTooLongHintWhenNoSameReasonLinkTest.php
@@ -41,7 +41,8 @@ class AdminDashboardRecentPlatformOrdersFailedHintsShouldShowReasonTooLongHintWh
             'published_at' => now(),
         ]);
 
-        $longReason = str_repeat('A', 120);
+        // 使用超出 config 阈值的长度（默认 200），确保命中“原因过长”分支。
+        $longReason = str_repeat('A', 220);
 
         PlatformOrder::query()->create([
             'merchant_id' => $merchantId,
@@ -85,7 +86,13 @@ class AdminDashboardRecentPlatformOrdersFailedHintsShouldShowReasonTooLongHintWh
         // 原因过长时不生成同原因集合链接，但应提示“原因过长”避免运营以为缺入口。
         $res->assertSee('原因过长', false);
 
-        // 不应出现同原因集合链接
-        $res->assertDontSee('同原因集合', false);
+        // 不应出现同原因集合链接（限定在失败提示块 scope 内，避免页面其它区域出现同名文案造成误判）
+        // 说明：页面上其他位置可能也会出现“同原因集合”，因此这里锁定到 recent-order-sync-failed-hint 这段。
+        $content = (string) $res->getContent();
+        $startPos = strpos($content, 'data-role="recent-order-sync-failed-hint"');
+        $this->assertNotFalse($startPos);
+        $snippet = substr($content, $startPos, 800);
+        $this->assertStringContainsString('原因过长', $snippet);
+        $this->assertStringNotContainsString('同原因集合', $snippet);
     }
 }