样式修改完成，待测试

html/reg.html

@@ -653,8 +653,10 @@
       }
 
       function getInviteCodeFromQuery() {
-        const params = new URLSearchParams(window.location.search);
-        return params.get("inviteCode") || params.get("referralCode") || "";
+        return (
+          AuthPageUtil.captureReferralInviteFromUrl() ||
+          AuthPageUtil.getPendingReferralInviteCode()
+        );
       }
 
       function loadReferralBindPreview() {
@@ -694,6 +696,49 @@
           });
       }
 
+      function saveRegisterTokenIfPresent(res) {
+        const data = ApiClient.pickData(res) || {};
+        if (!data || typeof data !== "object") return false;
+
+        const token = data.access_token || data.token || "";
+        if (!token) return false;
+
+        localStorage.setItem("token", token);
+        localStorage.setItem("userInfo", JSON.stringify(data));
+        sessionStorage.removeItem("authExpiredRedirecting");
+        sessionStorage.removeItem("authExpiredMessage");
+        return true;
+      }
+
+      function redirectAfterRegister(hasToken) {
+        if (hasToken) {
+          window.location.href =
+            typeof CommonUtil !== "undefined"
+              ? CommonUtil.siteHref("/index.html")
+              : "index.html";
+          return;
+        }
+
+        window.location.href = "login.html";
+      }
+
+      function finishRegisterSuccess(res) {
+        const hasToken = saveRegisterTokenIfPresent(res);
+        layerInstance.msg(
+          hasToken ? "注册成功，即将跳转到首页" : "注册成功，即将前往登录",
+          { icon: 1, time: 1200 },
+          function () {
+            AuthPageUtil.bindPendingReferralInviteCode()
+              .then(function () {
+                redirectAfterRegister(hasToken);
+              })
+              .catch(function () {
+                redirectAfterRegister(hasToken);
+              });
+          },
+        );
+      }
+
       function register() {
         $("#registerBtn").prop("disabled", true).text("注册中...");
         ApiClient.post(ApiClient.API.authRegister, buildRegisterData(), {
@@ -701,13 +746,7 @@
         })
           .then(function (res) {
             if (ApiClient.isSuccess(res)) {
-              layerInstance.msg(
-                "注册成功，即将前往登录",
-                { icon: 1, time: 1200 },
-                function () {
-                  window.location.href = "login.html";
-                },
-              );
+              finishRegisterSuccess(res);
               return;
             }
             layerInstance.msg((res && res.msg) || "注册失败，请稍后重试", {
@@ -726,6 +765,7 @@
 
       layui.use(["layer", "jquery"], function () {
         layerInstance = layui.layer;
+        AuthPageUtil.captureReferralInviteFromUrl();
         loadVerifyConfig().then(refreshCaptcha);
         loadReferralBindPreview();
         $("#sendSmsBtn").on("click", sendSmsCode);