diff --git a/demo/gch/v4.js b/demo/gch/v4.js
index 8a7e5b8..bf1db63 100644
--- a/demo/gch/v4.js
+++ b/demo/gch/v4.js
@@ -88,6 +88,11 @@
       c.tabIndex = d === 0 ? 0 : -1;
     });
     pgB.textContent = idx + 1; pgI.textContent = '/' + cards.length;
+    /* 11-02 用户：滑到哪张图，右上角分类小滑块跟着跳到它的归属类（只在「全部」里跳；投稿卡回到「全部」；选了具体分类时不动） */
+    if (cur === '') {
+      var cc = cards[idx] && (cards[idx].className.match(/\bc-(\w+)/) || [])[1] || '';
+      [].forEach.call(sec.querySelectorAll('.g4-cat button'), function (x) { x.classList.toggle('on', x.dataset.cat === cc); });
+    }
     sec.querySelector('.g4-arr.prev').disabled = idx === 0;
   }
   function next() {
@@ -160,7 +165,7 @@
   sec.querySelector('.g4-all').addEventListener('click', function () { go(''); });
   sec.querySelector('.g4-cat').addEventListener('click', function (e) {
     var b = e.target.closest('button[data-cat]');
-    if (!b || b.classList.contains('on')) return;
+    if (!b || b.dataset.cat === cur) return;   // 「全部」里滑块跟着卡片跳，所以按当前筛选判断，不按高亮判断
     [].forEach.call(sec.querySelectorAll('.g4-cat button'), function (x) { x.classList.toggle('on', x === b); });
     paint(b.dataset.cat);
   });
diff --git a/index.html b/index.html
index 60fc355..810cd18 100644
--- a/index.html
+++ b/index.html
@@ -2500,7 +2500,7 @@
 (function () {
   var m = location.search.match(/[?&]gcv=([1-6])(?:&|$)/);
   if (!m) window.__gcDefault = 1;
-  var n = m ? m[1] : '6', l = document.createElement('link'), s = document.createElement('script'), q = m ? Date.now() : 'v=26110130';
+  var n = m ? m[1] : '6', l = document.createElement('link'), s = document.createElement('script'), q = m ? Date.now() : 'v=26110131';
   l.rel = 'stylesheet'; l.href = 'demo/gch/v' + n + '.css?' + q;
   s.src = 'demo/gch/v' + n + '.js?' + q;
   if (m) s.onload = function () { setTimeout(function () { var el = document.getElementById('gcHome'); if (el) el.scrollIntoView({ block: 'center' }); }, 900); };