优化小程序阅读页面，新增好友优惠展示逻辑，支持通过推荐人获取折扣。调整价格计算方式，确保用户在购买章节时能看到实际优惠。更新相关样式以提升用户体验。

soul-api/internal/handler/admin_withdrawals.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"time"
@@ -155,12 +156,26 @@ func AdminWithdrawalsAction(c *gin.Context) {
 			return
 		}
 
-		// 调用微信转账接口（FundApp 单笔发起转账，与 商家转账.md 示例一致）
+		// 调用微信转账接口：按提现手续费扣除后打款，例如申请100元、手续费5%则实际打款95元
 		remark := "提现"
 		if w.Remark != nil && *w.Remark != "" {
 			remark = *w.Remark
 		}
-		amountFen := int(w.Amount * 100)
+		withdrawFee := 0.0
+		var refCfg model.SystemConfig
+		if err := db.Where("config_key = ?", "referral_config").First(&refCfg).Error; err == nil {
+			var refVal map[string]interface{}
+			if err := json.Unmarshal(refCfg.ConfigValue, &refVal); err == nil {
+				if v, ok := refVal["withdrawFee"].(float64); ok {
+					withdrawFee = v / 100
+				}
+			}
+		}
+		actualAmount := w.Amount * (1 - withdrawFee)
+		if actualAmount < 0.01 {
+			actualAmount = 0.01
+		}
+		amountFen := int(actualAmount * 100)
 		if amountFen < 1 {
 			c.JSON(http.StatusOK, gin.H{"success": false, "error": "提现金额异常"})
 			return