更新支付和推荐系统逻辑，新增根据推荐配置计算支付金额的功能，确保用户享受优惠。调整绑定推荐关系的有效期读取方式，支持从配置中获取。优化提现流程，增加最低提现金额的配置读取，提升系统灵活性和用户体验。同时，更新管理界面中的支付设置链接，确保一致性。

app/admin/layout.tsx

@@ -47,7 +47,7 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
     { icon: BookOpen, label: "内容管理", href: "/admin/content" },
     { icon: Users, label: "用户管理", href: "/admin/users" },
     { icon: Wallet, label: "交易中心", href: "/admin/distribution" }, // 合并：分销+订单+提现
-    { icon: CreditCard, label: "支付设置", href: "/admin/payment" },
+    { icon: CreditCard, label: "推广设置", href: "/admin/referral-settings" }, // 单独入口，集中管理分销配置
     { icon: Settings, label: "系统设置", href: "/admin/settings" },
   ]
 

app/admin/referral-settings/page.tsx

@@ -0,0 +1,272 @@
+"use client"
+
+import { useEffect, useState } from "react"
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
+import { Label } from "@/components/ui/label"
+import { Input } from "@/components/ui/input"
+import { Button } from "@/components/ui/button"
+import { Switch } from "@/components/ui/switch"
+import { Slider } from "@/components/ui/slider"
+import { Badge } from "@/components/ui/badge"
+import { Save, Percent, Users, Wallet, Info } from "lucide-react"
+
+type ReferralConfig = {
+  distributorShare: number
+  minWithdrawAmount: number
+  bindingDays: number
+  userDiscount: number
+  enableAutoWithdraw: boolean
+}
+
+const DEFAULT_REFERRAL_CONFIG: ReferralConfig = {
+  distributorShare: 90,
+  minWithdrawAmount: 10,
+  bindingDays: 30,
+  userDiscount: 5,
+  enableAutoWithdraw: false,
+}
+
+export default function ReferralSettingsPage() {
+  const [config, setConfig] = useState<ReferralConfig>(DEFAULT_REFERRAL_CONFIG)
+  const [loading, setLoading] = useState(true)
+  const [saving, setSaving] = useState(false)
+
+  useEffect(() => {
+    const loadConfig = async () => {
+      try {
+        const res = await fetch("/api/db/config?key=referral_config")
+        if (res.ok) {
+          const data = await res.json()
+          if (data?.success && data.config) {
+            setConfig({
+              distributorShare: data.config.distributorShare ?? 90,
+              minWithdrawAmount: data.config.minWithdrawAmount ?? 10,
+              bindingDays: data.config.bindingDays ?? 30,
+              userDiscount: data.config.userDiscount ?? 5,
+              enableAutoWithdraw: data.config.enableAutoWithdraw ?? false,
+            })
+          }
+        }
+      } catch (e) {
+        console.error("加载 referral_config 失败:", e)
+      } finally {
+        setLoading(false)
+      }
+    }
+    loadConfig()
+  }, [])
+
+  const handleSave = async () => {
+    setSaving(true)
+    try {
+      // 确保所有字段都是正确类型（防止字符串导致计算错误）
+      const safeConfig = {
+        distributorShare: Number(config.distributorShare) || 0,
+        minWithdrawAmount: Number(config.minWithdrawAmount) || 0,
+        bindingDays: Number(config.bindingDays) || 0,
+        userDiscount: Number(config.userDiscount) || 0,
+        enableAutoWithdraw: Boolean(config.enableAutoWithdraw),
+      }
+      
+      const body = {
+        key: "referral_config",
+        config: safeConfig,
+        description: "分销 / 推广规则配置",
+      }
+      const res = await fetch("/api/db/config", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(body),
+      })
+      const data = await res.json()
+      if (!res.ok || !data?.success) {
+        alert("保存失败: " + (data?.error || res.statusText))
+        return
+      }
+      
+      alert("✅ 分销配置已保存成功！\n\n• 小程序与网站的推广规则会一起生效\n• 绑定关系会使用新的天数配置\n• 佣金比例会立即应用到新订单\n\n如有缓存，请刷新前台/小程序页面。")
+    } catch (e: any) {
+      console.error("保存 referral_config 失败:", e)
+      alert("保存失败: " + (e?.message || String(e)))
+    } finally {
+      setSaving(false)
+    }
+  }
+
+  const handleNumberChange = (field: keyof ReferralConfig) => (e: React.ChangeEvent<HTMLInputElement>) => {
+    const value = parseFloat(e.target.value || "0")
+    setConfig((prev) => ({ ...prev, [field]: isNaN(value) ? 0 : value }))
+  }
+
+  return (
+    <div className="p-8 max-w-4xl mx-auto">
+      <div className="flex justify-between items-center mb-8">
+        <div>
+          <h2 className="text-2xl font-bold text-white flex items-center gap-2">
+            <Wallet className="w-5 h-5 text-[#38bdac]" />
+            推广 / 分销设置
+          </h2>
+          <p className="text-gray-400 mt-1">
+            统一管理「好友优惠」「你得 90% 收益」「绑定期 30 天」「提现门槛」等规则，小程序和 Web 共用这套配置。
+          </p>
+        </div>
+        <Button
+          onClick={handleSave}
+          disabled={saving || loading}
+          className="bg-[#38bdac] hover:bg-[#2da396] text-white"
+        >
+          <Save className="w-4 h-4 mr-2" />
+          {saving ? "保存中..." : "保存配置"}
+        </Button>
+      </div>
+
+      <div className="space-y-6">
+        {/* 核心规则卡片 */}
+        <Card className="bg-[#0f2137] border-gray-700/50 shadow-xl">
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-white">
+              <Percent className="w-4 h-4 text-[#38bdac]" />
+              推广规则
+            </CardTitle>
+            <CardDescription className="text-gray-400">
+              这三项会直接体现在小程序「推广规则」卡片上，同时影响实收佣金计算。
+            </CardDescription>
+          </CardHeader>
+          <CardContent className="space-y-6">
+            <div className="grid grid-cols-3 gap-6">
+              <div className="space-y-2">
+                <Label className="text-gray-300 flex items-center gap-2">
+                  <Info className="w-3 h-3 text-[#38bdac]" />
+                  好友优惠（%）
+                </Label>
+                <Input
+                  type="number"
+                  min={0}
+                  max={100}
+                  className="bg-[#0a1628] border-gray-700 text-white"
+                  value={config.userDiscount}
+                  onChange={handleNumberChange("userDiscount")}
+                />
+                <p className="text-xs text-gray-500">例如 5 表示好友立减 5%（在价格配置基础上生效）。</p>
+              </div>
+
+              <div className="space-y-2">
+                <Label className="text-gray-300 flex items-center gap-2">
+                  <Users className="w-3 h-3 text-[#38bdac]" />
+                  推广者分成（%）
+                </Label>
+                <div className="flex items-center gap-4">
+                  <Slider
+                    className="flex-1"
+                    min={10}
+                    max={100}
+                    step={1}
+                    value={[config.distributorShare]}
+                    onValueChange={([val]) => setConfig((prev) => ({ ...prev, distributorShare: val }))}
+                  />
+                  <Input
+                    type="number"
+                    min={0}
+                    max={100}
+                    className="w-20 bg-[#0a1628] border-gray-700 text-white text-center"
+                    value={config.distributorShare}
+                    onChange={handleNumberChange("distributorShare")}
+                  />
+                </div>
+                <p className="text-xs text-gray-500">
+                  实际佣金 = 订单金额 × {" "}
+                  <span className="text-[#38bdac] font-mono">{config.distributorShare}%</span>，支付回调和分销统计都会用这个值。
+                </p>
+              </div>
+
+              <div className="space-y-2">
+                <Label className="text-gray-300 flex items-center gap-2">
+                  <Users className="w-3 h-3 text-[#38bdac]" />
+                  绑定有效期（天）
+                </Label>
+                <Input
+                  type="number"
+                  min={1}
+                  max={365}
+                  className="bg-[#0a1628] border-gray-700 text-white"
+                  value={config.bindingDays}
+                  onChange={handleNumberChange("bindingDays")}
+                />
+                <p className="text-xs text-gray-500">好友通过你的链接进来并登录后，绑定在你名下的天数。</p>
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        {/* 提现与自动提现 */}
+        <Card className="bg-[#0f2137] border-gray-700/50 shadow-xl">
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-white">
+              <Wallet className="w-4 h-4 text-[#38bdac]" />
+              提现规则
+            </CardTitle>
+            <CardDescription className="text-gray-400">
+              与「提现中心」「自动提现」相关的参数，影响推广者看到的可提现金额和最低门槛。
+            </CardDescription>
+          </CardHeader>
+          <CardContent className="space-y-6">
+            <div className="grid grid-cols-2 gap-6">
+              <div className="space-y-2">
+                <Label className="text-gray-300">最低提现金额（元）</Label>
+                <Input
+                  type="number"
+                  min={0}
+                  step={1}
+                  className="bg-[#0a1628] border-gray-700 text-white"
+                  value={config.minWithdrawAmount}
+                  onChange={handleNumberChange("minWithdrawAmount")}
+                />
+                <p className="text-xs text-gray-500">小程序「满 X 元可提现」展示的门槛，同时用于后端接口校验。</p>
+              </div>
+
+              <div className="space-y-2">
+                <Label className="text-gray-300 flex items-center gap-2">
+                  自动提现开关
+                  <Badge variant="outline" className="border-[#38bdac]/40 text-[#38bdac] text-[10px]">
+                    预留
+                  </Badge>
+                </Label>
+                <div className="flex items-center gap-3 mt-1">
+                  <Switch
+                    checked={config.enableAutoWithdraw}
+                    onCheckedChange={(checked) => setConfig((prev) => ({ ...prev, enableAutoWithdraw: checked }))}
+                  />
+                  <span className="text-sm text-gray-400">
+                    开启后，可结合定时任务实现「收益自动打款到微信零钱」。
+                  </span>
+                </div>
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        {/* 提示卡片 */}
+        <Card className="bg-[#0f2137] border-gray-700/50">
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-gray-200 text-sm">
+              <Info className="w-4 h-4 text-[#38bdac]" />
+              使用说明
+            </CardTitle>
+          </CardHeader>
+          <CardContent className="space-y-2 text-xs text-gray-400 leading-relaxed">
+            <p>
+              1. 以上配置会写入 <code className="font-mono text-[11px] text-[#38bdac]">system_config.referral_config</code>，小程序「推广中心」、
+              Web 推广页以及支付回调都会读取同一份配置。
+            </p>
+            <p>
+              2. 修改后新订单立即生效；旧订单的历史佣金不会自动重算，只影响之后产生的订单。
+            </p>
+            <p>
+              3. 如遇前端展示与实际结算不一致，优先以此处配置为准，再排查缓存和小程序版本。
+            </p>
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  )
+}