diff --git a/activity/invite/index.html b/activity/invite/index.html
index e9ed401..e29205f 100644
--- a/activity/invite/index.html
+++ b/activity/invite/index.html
@@ -313,9 +313,9 @@
             })();
         </script>
         <script src="../../common/i18n.js?v=20260606-1"></script>
-        <script src="../../common/api.js?v=20260630-invite-code"></script>
+        <script src="../../common/api.js?v=20260701-invite-referrer"></script>
         <script src="../../common/params.js?v=20260611-invite-referrer"></script>
         <script src="../../common/toast.js"></script>
-        <script src="./script.js?v=20260630-bind-window"></script>
+        <script src="./script.js?v=20260701-bound-referrer"></script>
     </body>
 </html>
diff --git a/activity/invite/script.js b/activity/invite/script.js
index 458e755..ada3c57 100644
--- a/activity/invite/script.js
+++ b/activity/invite/script.js
@@ -33,12 +33,16 @@
         serverTimeMS: 0,
         pendingInviteCode: '',
         searchedInviter: null,
+        boundInviter: null,
+        boundInviterLoaded: false,
+        boundInviterLoading: null,
         inviteRewardStatus: null,
         rankRows: [],
         rankLoaded: false,
         rankLoading: false,
         searchingInviter: false,
         bindingInviter: false,
+        viewingBoundInviter: false,
         claiming: {},
     };
 
@@ -216,6 +220,7 @@
     function canShowBindInviteButton() {
         var api = window.HyAppAPI || {};
         var hasToken = api.getAccessToken && api.getAccessToken();
+        if (state.boundInviter) return true;
         if (hasToken && !state.currentUserTimingLoaded) return false;
         var current = state.currentUser || {};
         var createdAtMS =
@@ -306,6 +311,53 @@
         renderBindInviteVisibility();
     }
 
+    function applyBoundInviteReferrer(payload) {
+        var invite = payload && (payload.invite || payload.Invite);
+        var inviter = normalizeInviter(payload, '');
+        if (!inviter) {
+            state.boundInviter = null;
+            renderBindInviteVisibility();
+            return;
+        }
+        inviter.inviteCode =
+            textValue(
+                firstObjectValue(invite, [
+                    'invite_code',
+                    'inviteCode',
+                    'my_invite_code',
+                    'myInviteCode',
+                ])
+            ) || inviter.inviteCode;
+        state.boundInviter = inviter;
+        state.searchedInviter = inviter;
+        renderBindInviteVisibility();
+    }
+
+    function loadBoundInviteReferrer() {
+        var api = window.HyAppAPI && window.HyAppAPI.user;
+        var rootAPI = window.HyAppAPI || {};
+        if (state.boundInviterLoading) return state.boundInviterLoading;
+        if (
+            !api ||
+            !api.getInviteReferrer ||
+            !rootAPI.getAccessToken ||
+            !rootAPI.getAccessToken()
+        ) {
+            state.boundInviterLoaded = true;
+            return Promise.resolve();
+        }
+        // 已绑定关系必须每次从服务端读取；本地只缓存展示结果，避免刷新后重新进入搜索绑定流程。
+        state.boundInviterLoading = api
+            .getInviteReferrer()
+            .then(applyBoundInviteReferrer)
+            .catch(function () {})
+            .then(function () {
+                state.boundInviterLoaded = true;
+                state.boundInviterLoading = null;
+            });
+        return state.boundInviterLoading;
+    }
+
     function loadCurrentUser() {
         var api = window.HyAppAPI || {};
         var userAPI = api.user || api.users;
@@ -943,16 +995,18 @@
         return '';
     }
 
-    function openBindModal() {
-        if (!canShowBindInviteButton()) {
-            renderBindInviteVisibility();
-            return;
-        }
-        var api = window.HyAppAPI || {};
-        if (!api.getAccessToken || !api.getAccessToken()) {
-            toast(t('invite.loginRequired', 'Please log in first'));
-            return;
+    function showBoundInviterModal() {
+        if (state.boundInviter) {
+            state.pendingInviteCode = '';
+            state.searchedInviter = state.boundInviter;
+            state.searchingInviter = false;
+            state.bindingInviter = false;
+            showBindResult(state.boundInviter, { bound: true });
+            $('#bindInviteModal').hidden = false;
         }
+    }
+
+    function showBindSearchModal() {
         state.pendingInviteCode = '';
         state.searchedInviter = null;
         state.searchingInviter = false;
@@ -966,10 +1020,38 @@
         }, 0);
     }
 
+    function openBindModal() {
+        if (!canShowBindInviteButton()) {
+            renderBindInviteVisibility();
+            return;
+        }
+        var api = window.HyAppAPI || {};
+        if (!api.getAccessToken || !api.getAccessToken()) {
+            toast(t('invite.loginRequired', 'Please log in first'));
+            return;
+        }
+        if (state.boundInviter) {
+            showBoundInviterModal();
+            return;
+        }
+        if (!state.boundInviterLoaded) {
+            loadBoundInviteReferrer().then(function () {
+                if (state.boundInviter) {
+                    showBoundInviterModal();
+                    return;
+                }
+                showBindSearchModal();
+            });
+            return;
+        }
+        showBindSearchModal();
+    }
+
     function closeBindModal() {
         $('#bindInviteModal').hidden = true;
         state.searchingInviter = false;
         state.bindingInviter = false;
+        state.viewingBoundInviter = false;
         renderBindActions();
     }
 
@@ -977,10 +1059,11 @@
         $('#bindInputCard').hidden = false;
         $('#bindResultCard').hidden = true;
         state.searchedInviter = null;
+        state.viewingBoundInviter = false;
         renderBindActions();
     }
 
-    function showBindResult(inviter) {
+    function showBindResult(inviter, options) {
         var avatar = $('#inviterAvatar');
         var name = $('#inviterName');
         var displayID = $('#inviterDisplayId');
@@ -995,6 +1078,7 @@
         if (displayID) displayID.textContent = inviter.displayUserID || '--';
         $('#bindInputCard').hidden = true;
         $('#bindResultCard').hidden = false;
+        state.viewingBoundInviter = Boolean(options && options.bound);
         renderBindActions();
     }
 
@@ -1004,14 +1088,22 @@
         var input = $('#bindInviteInput');
         var busy = state.searchingInviter || state.bindingInviter;
         if (confirm) {
-            confirm.disabled = busy;
-            confirm.textContent = state.bindingInviter
-                ? t('invite.binding', 'Binding...')
-                : state.searchingInviter
-                  ? t('invite.searchingInviter', 'Searching...')
-                  : t('invite.confirm', 'Confirm');
+            confirm.hidden = state.viewingBoundInviter;
+            confirm.disabled = state.viewingBoundInviter || busy;
+            if (!state.viewingBoundInviter) {
+                confirm.textContent = state.bindingInviter
+                    ? t('invite.binding', 'Binding...')
+                    : state.searchingInviter
+                      ? t('invite.searchingInviter', 'Searching...')
+                      : t('invite.confirm', 'Confirm');
+            }
+        }
+        if (cancel) {
+            cancel.disabled = busy;
+            cancel.textContent = state.viewingBoundInviter
+                ? t('invite.close', 'Close')
+                : t('invite.cancel', 'Cancel');
         }
-        if (cancel) cancel.disabled = busy;
         if (input) input.disabled = busy;
     }
 
@@ -1135,6 +1227,10 @@
     }
 
     function confirmBindInviter() {
+        if (state.viewingBoundInviter) {
+            closeBindModal();
+            return;
+        }
         if (state.bindingInviter) return;
         var api = window.HyAppAPI && window.HyAppAPI.user;
         var inviter = state.searchedInviter;
@@ -1154,9 +1250,24 @@
                 state.bindingInviter = false;
                 renderBindActions();
                 if (invite && (invite.bound || invite.invite_code)) {
+                    var boundInviter = normalizeInviter(response, '') || inviter;
+                    boundInviter.inviteCode =
+                        textValue(
+                            firstObjectValue(invite, [
+                                'invite_code',
+                                'inviteCode',
+                            ])
+                        ) ||
+                        inviter.inviteCode ||
+                        state.pendingInviteCode;
+                    state.boundInviter = boundInviter;
+                    state.boundInviterLoaded = true;
+                    state.searchedInviter = boundInviter;
+                    renderBindInviteVisibility();
                     toast(t('invite.bindSuccess', 'Bound successfully'));
                     closeBindModal();
                     loadCurrentUser().catch(function () {});
+                    loadBoundInviteReferrer();
                     loadInviteActivityReward();
                     return;
                 }
@@ -1218,6 +1329,7 @@
             loadCurrentUser().catch(function () {
                 renderInviteShare();
             }),
+            loadBoundInviteReferrer(),
             loadInviteActivityReward(),
         ]);
     }
diff --git a/common/api.js b/common/api.js
index 31079d9..3fd14ca 100644
--- a/common/api.js
+++ b/common/api.js
@@ -556,6 +556,11 @@ var default_api = 'https://api.global-interaction.com/';
                 }
             );
         },
+        getInviteReferrer: function () {
+            return request('/api/v1/users/me/invite-referrer', {
+                method: 'GET',
+            });
+        },
         searchInviteReferrer: function (inviteCode) {
             return request('/api/v1/users/me/invite-referrer/search', {
                 method: 'GET',