diff --git a/app/Http/Controllers/Business/Pages.php b/app/Http/Controllers/Business/Pages.php
index d4ab1ca3..8ff64855 100644
--- a/app/Http/Controllers/Business/Pages.php
+++ b/app/Http/Controllers/Business/Pages.php
@@ -136,6 +136,12 @@ class Pages extends Controller
         '未匹配',
     ];
 
+    /** 差额按实收/应付口径兜底时使用的备注；这部分行才需要判断复杂差额原因。 */
+    private const RECEIPT_BASIS_FALLBACK_REMARKS = [
+        '订单实付按卖家实收核对',
+        '订单实付按应付/已付核对',
+    ];
+
     /** 业绩明细「异常标注」筛选项，取值与同步命令写入的标注一致。 */
     private const RECEIPT_REMARK_OPTIONS = [
         '账单无单号',
@@ -502,9 +508,41 @@ class Pages extends Controller
             $rules
         )) . ')';
 
-        return "CASE WHEN remark IN ('订单实付按卖家实收核对','订单实付按应付/已付核对')"
+        return "CASE WHEN remark IN (" . self::receiptBasisFallbackSqlList() . ')'
             . " AND NOT COALESCE({$ruleUnion}, 0) THEN 0"
-            . ' ELSE COALESCE(difference, COALESCE(income_amount, 0) + COALESCE(discount_amount, 0) + COALESCE(offset_amount, 0)) END';
+            . ' ELSE ' . self::receiptDefaultDifferenceSql() . ' END';
+    }
+
+    /** 未命中复杂原因时，差额的默认口径。 */
+    private static function receiptDefaultDifferenceSql(): string
+    {
+        return 'COALESCE(difference, COALESCE(income_amount, 0) + COALESCE(discount_amount, 0) + COALESCE(offset_amount, 0))';
+    }
+
+    /**
+     * 口径兜底行的差额修正量：只对「实收/应付核对」行计算复杂规则，
+     * 避免把京东、京喜、得物、淘系退款等关联子查询放进整月汇总的每一行。
+     */
+    private static function receiptFallbackDifferenceAdjustmentSql(): string
+    {
+        $rules = self::receiptDifferenceRemarkConditions();
+        unset($rules['差额待核实']);
+        $ruleUnion = '(' . implode(' OR ', array_map(
+            static fn (string $condition): string => '(' . $condition . ')',
+            $rules
+        )) . ')';
+
+        return 'CASE WHEN NOT COALESCE(' . $ruleUnion . ', 0) THEN -('
+            . self::receiptDefaultDifferenceSql() . ') ELSE 0 END';
+    }
+
+    /** @return string SQL 的字符串字面量列表 */
+    private static function receiptBasisFallbackSqlList(): string
+    {
+        return implode(', ', array_map(
+            static fn (string $remark): string => "'" . str_replace("'", "''", $remark) . "'",
+            self::RECEIPT_BASIS_FALLBACK_REMARKS
+        ));
     }
 
     private static function receiptDifferenceRemark(object $row): ?string
@@ -1219,7 +1257,8 @@ class Pages extends Controller
         $aggQuery = $base();
         $applyFilters($aggQuery);
         // 口径兜底行（备注为空、口径对上）的差额按 0 计——与页面行展示、差额筛选同一套判定。
-        $differenceExpr = self::receiptEffectiveDifferenceSql();
+        $differenceBaseExpr = self::receiptDefaultDifferenceSql();
+        $fallbackSql = self::receiptBasisFallbackSqlList();
         $agg = $aggQuery->selectRaw("
             COUNT(*) as total,
             SUM(payment_count) as payments,
@@ -1230,13 +1269,24 @@ class Pages extends Controller
             SUM(planting_amount) as planting_total,
             SUM(product_amount) as goods_total,
             SUM(paid_amount) as paid_total,
-            SUM({$differenceExpr}) as difference_total,
+            SUM({$differenceBaseExpr}) as difference_base,
+            SUM(CASE WHEN remark IN ({$fallbackSql}) THEN 1 ELSE 0 END) as basis_fallback_rows,
             SUM(CASE WHEN payment_count > 1 THEN 1 ELSE 0 END) as multi_pay,
             SUM(CASE WHEN income_amount = 0 THEN 1 ELSE 0 END) as zero_income,
             SUM(CASE WHEN match_status = '已匹配' THEN 1 ELSE 0 END) as matched,
             SUM(CASE WHEN match_status = '未匹配' THEN 1 ELSE 0 END) as unmatched
         ")->first();
         $total = (int) ($agg->total ?? 0);
+        $differenceTotal = (float) ($agg->difference_base ?? 0);
+        if ((int) ($agg->basis_fallback_rows ?? 0) > 0) {
+            $adjustmentQuery = $base();
+            $applyFilters($adjustmentQuery);
+            $adjustment = $adjustmentQuery
+                ->whereIn('remark', self::RECEIPT_BASIS_FALLBACK_REMARKS)
+                ->selectRaw('SUM(' . self::receiptFallbackDifferenceAdjustmentSql() . ') as adjustment')
+                ->first();
+            $differenceTotal += (float) ($adjustment->adjustment ?? 0);
+        }
 
         $stats = [
             'month' => $month,
@@ -1255,7 +1305,7 @@ class Pages extends Controller
             'planting_total' => round((float) ($agg->planting_total ?? 0), 2),
             'goods_total' => round((float) ($agg->goods_total ?? 0), 2),
             'paid_total' => round((float) ($agg->paid_total ?? 0), 2),
-            'difference_total' => round((float) ($agg->difference_total ?? 0), 2),
+            'difference_total' => round($differenceTotal, 2),
             'per_page' => $limit,
         ];