diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index e233cc2..6175e8d 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -485,6 +485,10 @@ class PlatformOrderController extends Controller
                 fputcsv($out, ['reconcile_mismatch', $reconcileMismatch ? '1' : '0']);
                 fputcsv($out, ['refund_inconsistent', $refundInconsistent ? '1' : '0']);
 
+                // 口径说明（给财务/运营离线核对时可读）
+                fputcsv($out, ['reconcile_mismatch_rule', 'receipt_total > 0 && abs(receipt_total - paid_amount) >= amount_tolerance']);
+                fputcsv($out, ['refund_inconsistent_rule', 'PlatformOrder::isRefundInconsistent()（按系统统一容差口径）']);
+
                 fputcsv($out, ['placed_at', (string) (optional($order->placed_at)->format('Y-m-d H:i:s') ?? '')]);
                 fputcsv($out, ['paid_at', (string) (optional($order->paid_at)->format('Y-m-d H:i:s') ?? '')]);
                 fputcsv($out, ['activated_at', (string) (optional($order->activated_at)->format('Y-m-d H:i:s') ?? '')]);