diff --git a/api.cfm b/api.cfm
index 05228bd..610ff18 100644
--- a/api.cfm
+++ b/api.cfm
@@ -85,6 +85,22 @@
             <cfset arrayAppend(result.results, "spec_history: OK")>
             <cfcatch><cfset arrayAppend(result.results, "spec_history: " & cfcatch.message)></cfcatch>
         </cftry>
+        <cftry>
+            <cfquery datasource="baza">
+                CREATE TABLE IF NOT EXISTS upload_chunks (
+                    id SERIAL PRIMARY KEY,
+                    upload_id TEXT NOT NULL,
+                    chunk_index INTEGER NOT NULL,
+                    total_chunks INTEGER DEFAULT 0,
+                    filename TEXT DEFAULT '',
+                    data TEXT NOT NULL,
+                    contract_id TEXT DEFAULT '',
+                    created_at TIMESTAMPTZ DEFAULT now()
+                )
+            </cfquery>
+            <cfset arrayAppend(result.results, "upload_chunks: OK")>
+            <cfcatch><cfset arrayAppend(result.results, "upload_chunks: " & cfcatch.message)></cfcatch>
+        </cftry>
     
     <cfelseif url.action EQ "query" AND structKeyExists(url, "sql")>
         <cfquery name="q" datasource="baza">#preserveSingleQuotes(url.sql)#</cfquery>
diff --git a/chunk.cfm b/chunk.cfm
new file mode 100644
index 0000000..d3818ef
--- /dev/null
+++ b/chunk.cfm
@@ -0,0 +1,113 @@
+<cfsetting showdebugoutput="no" enablecfoutputonly="true">
+<cfheader name="Content-Type" value="application/json; charset=utf-8">
+<cfheader name="Access-Control-Allow-Origin" value="*">
+<cfheader name="Access-Control-Allow-Methods" value="GET, POST, OPTIONS">
+<cfheader name="Access-Control-Allow-Headers" value="Content-Type">
+<cfif cgi.request_method EQ "OPTIONS"><cfoutput>OK</cfoutput><cfabort></cfif>
+
+<cfparam name="url.action" default="">
+<cfset result = {ok: false, error: "action required: put or assemble"}>
+
+<cftry>
+    <cfset body = toString(getHttpRequestData().content)>
+    <cfset data = deserializeJSON(body)>
+
+    <cfif url.action EQ "put">
+        <!--- Сохранить чанк --->
+        <cfif NOT structKeyExists(data, "upload_id") OR NOT structKeyExists(data, "chunk_index") OR NOT structKeyExists(data, "data")>
+            <cfset result = {ok: false, error: "upload_id, chunk_index, data required"}>
+        <cfelse>
+            <cfquery datasource="baza">
+                INSERT INTO upload_chunks (upload_id, chunk_index, total_chunks, filename, data, contract_id)
+                VALUES (
+                    <cfqueryparam value="#data.upload_id#" cfsqltype="cf_sql_varchar">,
+                    <cfqueryparam value="#data.chunk_index#" cfsqltype="cf_sql_integer">,
+                    <cfqueryparam value="#structKeyExists(data,'total_chunks') ? data.total_chunks : 0#" cfsqltype="cf_sql_integer">,
+                    <cfqueryparam value="#structKeyExists(data,'filename') ? data.filename : ''#" cfsqltype="cf_sql_varchar">,
+                    <cfqueryparam value="#data.data#" cfsqltype="cf_sql_varchar">,
+                    <cfqueryparam value="#structKeyExists(data,'contract_id') ? data.contract_id : ''#" cfsqltype="cf_sql_varchar">
+                )
+            </cfquery>
+            <cfset result = {ok: true, chunk: data.chunk_index}>
+        </cfif>
+
+    <cfelseif url.action EQ "assemble">
+        <!--- Собрать чанки в файл --->
+        <cfif NOT structKeyExists(data, "upload_id")>
+            <cfset result = {ok: false, error: "upload_id required"}>
+        <cfelse>
+            <cfquery name="chunks" datasource="baza">
+                SELECT chunk_index, data, filename, total_chunks, contract_id
+                FROM upload_chunks
+                WHERE upload_id = <cfqueryparam value="#data.upload_id#" cfsqltype="cf_sql_varchar">
+                ORDER BY chunk_index
+            </cfquery>
+            <cfif chunks.recordCount EQ 0>
+                <cfset result = {ok: false, error: "no chunks found"}>
+            <cfelse>
+                <cfset allData = "">
+                <cfset clientFile = "">
+                <cfset contractId = structKeyExists(data, "contract_id") ? data.contract_id : "">
+                <cfloop query="chunks">
+                    <cfset allData &= chunks.data>
+                    <cfif NOT len(clientFile) AND len(chunks.filename)>
+                        <cfset clientFile = chunks.filename>
+                    </cfif>
+                    <cfif NOT len(contractId) AND len(chunks.contract_id)>
+                        <cfset contractId = chunks.contract_id>
+                    </cfif>
+                </cfloop>
+
+                <cfif NOT len(clientFile)>
+                    <cfset clientFile = "uploaded_file">
+                </cfif>
+
+                <cfset mime = "application/octet-stream">
+                <cfset ext = listLast(clientFile, ".")>
+                <cfif ext EQ "pdf"><cfset mime = "application/pdf">
+                <cfelseif ext EQ "docx"><cfset mime = "application/vnd.openxmlformats-officedocument.wordprocessingml.document">
+                <cfelseif ext EQ "doc"><cfset mime = "application/msword">
+                <cfelseif ext EQ "zip"><cfset mime = "application/zip">
+                </cfif>
+
+                <cftransaction>
+                    <cfquery datasource="baza">
+                        INSERT INTO documents (filename, mime_type, original_bytes, status)
+                        VALUES (<cfqueryparam value="#clientFile#" cfsqltype="cf_sql_varchar">,<cfqueryparam value="#mime#" cfsqltype="cf_sql_varchar">,<cfqueryparam value="#allData#" cfsqltype="cf_sql_varchar">,'uploaded')
+                    </cfquery>
+                    <cfquery name="doc" datasource="baza">
+                        SELECT id FROM documents WHERE filename=<cfqueryparam value="#clientFile#" cfsqltype="cf_sql_varchar"> AND status='uploaded' ORDER BY created_at DESC LIMIT 1
+                    </cfquery>
+                    <cfif len(contractId)>
+                        <cfset suppType = "additional">
+                    <cfelse>
+                        <cfquery datasource="baza">
+                            INSERT INTO contracts (number, client) VALUES (<cfqueryparam value="б/н #dateFormat(now(),'yyyymmdd')#-#timeFormat(now(),'HHmm')#" cfsqltype="cf_sql_varchar">,'')
+                        </cfquery>
+                        <cfquery name="cid" datasource="baza">
+                            SELECT id FROM contracts ORDER BY created_at DESC LIMIT 1
+                        </cfquery>
+                        <cfset contractId = cid.id>
+                        <cfset suppType = "initial">
+                    </cfif>
+                    <cfquery datasource="baza">
+                        INSERT INTO supplements (contract_id, document_id, type) VALUES (<cfqueryparam value="#contractId#" cfsqltype="cf_sql_varchar">,<cfqueryparam value="#doc.id#" cfsqltype="cf_sql_varchar">,<cfqueryparam value="#suppType#" cfsqltype="cf_sql_varchar">)
+                    </cfquery>
+
+                    <!--- Удалить чанки --->
+                    <cfquery datasource="baza">
+                        DELETE FROM upload_chunks WHERE upload_id = <cfqueryparam value="#data.upload_id#" cfsqltype="cf_sql_varchar">
+                    </cfquery>
+                </cftransaction>
+
+                <cfset result = {ok: true, doc_id: doc.id, contract_id: contractId, filename: clientFile, size: len(allData)}>
+            </cfif>
+        </cfif>
+    </cfif>
+
+    <cfcatch>
+        <cfset result = {ok: false, error: cfcatch.message}>
+    </cfcatch>
+</cftry>
+
+<cfoutput>#serializeJSON(result)#</cfoutput>
diff --git a/index.cfm b/index.cfm
index 3c562bd..040407b 100644
--- a/index.cfm
+++ b/index.cfm
@@ -8,6 +8,7 @@
   <title>Сверка договоров</title>
   <link rel="icon" type="image/png" href="/favicon.png">
   <script src="https://unpkg.com/lucide@latest"></script>
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.10.1/jszip.min.js"></script>
   <style>
     :root {
       --brand-primary: #2563eb; --brand-primary-dark: #1d4ed8;
@@ -64,7 +65,7 @@
 <body>
 <div class="topbar">
   <img src="/nubes-logo.svg" alt="Nubes">
-  <span class="title">Сверка договоров <span style="font-weight:400;color:var(--muted);font-size:12px;">v1.0.35 — Lucee</span></span>
+  <span class="title">Сверка договоров <span style="font-weight:400;color:var(--muted);font-size:12px;">v1.0.36 — Lucee</span></span>
 </div>
 
 <div class="content">
@@ -221,7 +222,10 @@ fileInput.addEventListener('change', function() {
   renderTable();
 });
 
-// ── Загрузка через iframe (base64 в скрытом поле) ────────
+// ── Загрузка чанками (8KB) ────────────────────────────────
+var CHUNK_SIZE = 8000;
+function uuid() { return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,function(c){var r=Math.random()*16|0,v=c=='x'?r:(r&3|8);return v.toString(16);}); }
+
 uploadBtn.addEventListener('click', function() {
   if (fileQueue.length === 0) return;
   uploadBtn.disabled = true;
@@ -229,13 +233,13 @@ uploadBtn.addEventListener('click', function() {
   uploadTimer.style.display = 'block';
 
   var pending = fileQueue.filter(function(f) { return !f.doc_id; });
-  var done = 0;
 
-  function readThenUpload(i) {
+  function processNext(i) {
     if (i >= pending.length) {
       uploadTimer.style.display = 'none';
       uploadBtn.disabled = false;
-      if (contractId && done === pending.length) {
+      var hasErrors = fileQueue.some(function(f) { return f.status && f.status.indexOf('error') === 0; });
+      if (contractId && !hasErrors) {
         document.getElementById('actionsCard').style.display = 'block';
         document.getElementById('chatCard').style.display = 'block';
       }
@@ -244,70 +248,55 @@ uploadBtn.addEventListener('click', function() {
     var f = pending[i];
     f.status = 'читаю...';
     renderTable();
-    uploadTimer.textContent = 'Чтение ' + (i+1) + '/' + pending.length;
-
+    uploadTimer.textContent = 'Файл ' + (i+1) + '/' + pending.length;
     var reader = new FileReader();
     reader.onload = function(e) {
       var b64 = e.target.result.split(',')[1];
-      f.status = '0%';
-      renderTable();
-      uploadTimer.textContent = 'Загрузка ' + (i+1) + '/' + pending.length;
-      submitFile(i, f, b64);
-    };
-    reader.onerror = function() {
-      f.status = 'error: чтение';
-      renderTable();
-      readThenUpload(i + 1);
+      sendChunks(f, b64, i, pending);
     };
+    reader.onerror = function() { f.status = 'error: чтение'; renderTable(); processNext(i+1); };
     reader.readAsDataURL(f.file);
   }
 
-  function submitFile(i, f, b64) {
-    var iframe = document.createElement('iframe');
-    iframe.name = 'upfrm_' + Date.now() + '_' + i;
-    iframe.style.display = 'none';
-    iframe.onload = function() {
+  async function sendChunks(f, b64, i, pending) {
+    var chunks = [];
+    for (var p = 0; p < b64.length; p += CHUNK_SIZE) chunks.push(b64.substring(p, p + CHUNK_SIZE));
+    var uploadId = uuid();
+    var ok = true;
+    for (var ci = 0; ci < chunks.length; ci++) {
       try {
-        var resp = iframe.contentDocument.body.textContent.trim();
-        if (!resp) { throw new Error('пустой ответ'); }
-        var r = JSON.parse(resp);
-        if (r.OK) {
-          contractId = r.CONTRACT_ID;
-          f.doc_id = r.DOC_ID;
+        var resp = await fetch('/chunk.cfm?action=put', {
+          method: 'POST', headers: {'Content-Type':'application/json'},
+          body: JSON.stringify({upload_id:uploadId, chunk_index:ci, total_chunks:chunks.length, filename:f.name, data:chunks[ci], contract_id:contractId||''})
+        });
+        var d = await resp.json();
+        if (!d.OK) { ok = false; log('❌ ' + f.name + ' чанк ' + ci + ': ' + d.ERROR); break; }
+        f.status = Math.round((ci+1)/chunks.length*100) + '%';
+        renderTable();
+        uploadTimer.textContent = f.name + ' ' + f.status;
+      } catch(e) { ok = false; f.status = 'error: ' + e.message; renderTable(); break; }
+    }
+    if (ok) {
+      try {
+        var resp = await fetch('/chunk.cfm?action=assemble', {
+          method: 'POST', headers: {'Content-Type':'application/json'},
+          body: JSON.stringify({upload_id:uploadId})
+        });
+        var d = await resp.json();
+        if (d.OK) {
+          contractId = d.CONTRACT_ID || contractId;
+          f.doc_id = d.DOC_ID;
           f.status = 'uploaded';
-          done++;
-          var elapsed = ((Date.now() - uploadStartTime) / 1000).toFixed(1);
+          var elapsed = ((Date.now()-uploadStartTime)/1000).toFixed(1);
           log('✅ ' + f.name + ' (' + formatSize(f.size) + ') — ' + elapsed + 'с');
-        } else {
-          f.status = 'error: ' + (r.ERROR || '');
-          log('❌ ' + f.name + ': ' + (r.ERROR || ''));
-        }
-      } catch(e) {
-        f.status = 'error: ' + e.message;
-        log('❌ ' + f.name + ': ' + e.message);
-      }
-      renderTable();
-      document.body.removeChild(iframe);
-      readThenUpload(i + 1);
-    };
-    document.body.appendChild(iframe);
-
-    // Форма с скрытыми полями, target = iframe
-    var form = document.createElement('form');
-    form.method = 'POST';
-    form.action = '/upload.cfm';
-    form.target = iframe.name;
-    form.style.display = 'none';
-    form.innerHTML =
-      '<input type="hidden" name="filename" value="' + f.name.replace(/"/g,'&quot;') + '">' +
-      '<input type="hidden" name="data" value="' + b64.replace(/"/g,'&quot;') + '">' +
-      (contractId ? '<input type="hidden" name="contract_id" value="' + contractId + '">' : '');
-    document.body.appendChild(form);
-    form.submit();
-    setTimeout(function() { document.body.removeChild(form); }, 100);
+        } else { f.status = 'error: ' + (d.ERROR||''); log('❌ ' + f.name + ': ' + (d.ERROR||'')); }
+      } catch(e) { f.status = 'error: ' + e.message; log('❌ ' + f.name + ': ' + e.message); }
+    }
+    renderTable();
+    processNext(i + 1);
   }
 
-  readThenUpload(0);
+  processNext(0);
 });
 
 // ── Инфо ──────────────────────────────────────────────────