diff --git a/index.html b/index.html
index d7bdd8d..c4c8d1f 100644
--- a/index.html
+++ b/index.html
@@ -112,13 +112,7 @@
         <label>客户分类 <select id="deCat"><option value="">全部</option></select></label>
         <input type="text" id="deAcc" placeholder="筛选客户">
       </div>
-      <div class="scroll"><table id="tCustDetail"><thead><tr>
-        <th class="txt de-sort" data-k="cat" data-ty="str">客户分类<span class="arw"></span></th>
-        <th class="txt de-sort" data-k="acc" data-ty="str">客户<span class="arw"></span></th>
-        <th class="de-sort" data-k="base" data-ty="num">base收入<span class="arw"></span></th>
-        <th class="de-sort" data-k="t1" data-ty="num">T-1收入<span class="arw"></span></th>
-        <th class="de-sort" data-k="dod" data-ty="num">DoD(与T-2差)<span class="arw"></span></th>
-      </tr></thead><tbody></tbody></table></div>
+      <div class="scroll"><table id="tCustDetail"><thead></thead><tbody></tbody></table></div>
     </div>
   </div>
 </div>
@@ -412,6 +406,15 @@ function renderCustDetail(){
   } else {
     rows.sort(function(a,b){ return a.cat<b.cat?-1:a.cat>b.cat?1:(b.t1-a.t1); });
   }
+  // 动态表头：用实际日期替代 T-1
+  var thead=document.querySelector('#tCustDetail thead');
+  thead.innerHTML='<tr>'
+    +'<th class="txt de-sort" data-k="cat" data-ty="str">客户分类<span class="arw"></span></th>'
+    +'<th class="txt de-sort" data-k="acc" data-ty="str">客户<span class="arw"></span></th>'
+    +'<th class="de-sort" data-k="base" data-ty="num">base收入<span class="arw"></span></th>'
+    +'<th class="de-sort" data-k="t1" data-ty="num">'+(t1||'—')+'收入<span class="arw"></span></th>'
+    +'<th class="de-sort" data-k="dod" data-ty="num">DoD('+(t1||'—')+'−'+(t2||'—')+')<span class="arw"></span></th>'
+    +'</tr>';
   var body=rows.map(function(r){
     var dc=r.dod==null?'':(r.dod>=0?'pos':'neg');
     return '<tr><td class="txt">'+r.cat+'</td><td class="txt">'+r.acc+'</td><td>'+n2(r.base)+'</td>'
@@ -419,6 +422,12 @@ function renderCustDetail(){
   }).join('');
   document.querySelector('#tCustDetail tbody').innerHTML=body;
   document.querySelectorAll('#tCustDetail th.de-sort').forEach(function(th){
+    th.style.cursor='pointer';
+    th.onclick=function(){
+      var k=th.getAttribute('data-k'), ty=th.getAttribute('data-ty');
+      if(DE_SORT.k===k){ DE_SORT.dir=(DE_SORT.dir==='asc'?'desc':'asc'); } else { DE_SORT.k=k; DE_SORT.ty=ty; DE_SORT.dir='desc'; }
+      renderCustDetail();
+    };
     th.classList.remove('asc','desc');
     if(th.getAttribute('data-k')===DE_SORT.k) th.classList.add(DE_SORT.dir);
   });
@@ -426,15 +435,7 @@ function renderCustDetail(){
 
 // 3.1/3.2 表头排序绑定
 function bindCustSort(){
-  // 3.1 的表头排序绑定在 renderCustDaily 内部动态处理（表头是动态生成的）
-  document.querySelectorAll('#tCustDetail th.de-sort').forEach(function(th){
-    th.style.cursor='pointer';
-    th.onclick=function(){
-      var k=th.getAttribute('data-k'), ty=th.getAttribute('data-ty');
-      if(DE_SORT.k===k){ DE_SORT.dir=(DE_SORT.dir==='asc'?'desc':'asc'); } else { DE_SORT.k=k; DE_SORT.ty=ty; DE_SORT.dir='desc'; }
-      renderCustDetail();
-    };
-  });
+  // 3.1/3.2 表头排序绑定均在各自 render 内部动态处理（表头动态生成）
   // 3.2 筛选: 填充客户分类下拉 + 绑定
   var sel=document.getElementById('deCat');
   if(sel && D && D.cust_idsp){