diff --git a/configuracion.html b/configuracion.html
index 3c0c2b5..ee36ba9 100644
--- a/configuracion.html
+++ b/configuracion.html
@@ -772,6 +772,23 @@
                                             </div>
                                         </div>
                                     </div>
+
+                                    <div>
+                                        <label class="block text-xs font-black text-slate-600 uppercase tracking-widest mb-2">Imagen de Publicidad</label>
+                                        <div class="flex items-center gap-4">
+                                            <div id="adPreview" class="w-20 h-20 bg-slate-50 border-2 border-dashed border-slate-300 rounded-xl flex items-center justify-center overflow-hidden shrink-0">
+                                                <i data-lucide="image" class="text-slate-300 w-8 h-8"></i>
+                                            </div>
+                                            <div class="flex-1">
+                                                <input type="file" id="confAdInput" accept="image/png, image/jpeg, image/webp" class="hidden" onchange="encodeAd(this)">
+                                                <button onclick="document.getElementById('confAdInput').click()" class="bg-white border border-slate-200 text-slate-700 hover:bg-slate-50 font-bold py-2 px-4 rounded-lg text-sm transition-all shadow-sm">
+                                                    Subir Publicidad
+                                                </button>
+                                                <p class="text-[10px] text-slate-400 mt-1">Banner o Promoción que verá el cliente (Máx. 1MB).</p>
+                                                <input type="hidden" id="confAdBase64">
+                                            </div>
+                                        </div>
+                                    </div>
                                 </div>
 
                                 <div class="space-y-5 bg-slate-50 p-6 rounded-2xl border border-slate-100">
@@ -1376,6 +1393,10 @@
                         document.getElementById('confLogoBase64').value = data.config.company_logo;
                         document.getElementById('logoPreview').innerHTML = `<img src="${data.config.company_logo}" class="w-full h-full object-contain">`;
                     }
+                    if (data.config.company_ad) {
+                        document.getElementById('confAdBase64').value = data.config.company_ad;
+                        document.getElementById('adPreview').innerHTML = `<img src="${data.config.company_ad}" class="w-full h-full object-contain">`;
+                    }
                     
                     const s = data.config.portal_settings || {};
                     if(s.m_start) document.getElementById('mStart').value = s.m_start;
@@ -1417,6 +1438,17 @@
             reader.readAsDataURL(file);
         }
 
+        function encodeAd(input) {
+            const file = input.files[0];
+            if (!file || file.size > 1024 * 1024) { alert("Máximo 1MB"); return; }
+            const reader = new FileReader();
+            reader.onload = (e) => {
+                document.getElementById('confAdBase64').value = e.target.result;
+                document.getElementById('adPreview').innerHTML = `<img src="${e.target.result}" class="w-full h-full object-contain">`;
+            };
+            reader.readAsDataURL(file);
+        }
+
         async function savePortalConfig() {
             const btn = document.getElementById('btnSavePortal'), original = btn.innerHTML;
             btn.innerHTML = '<i data-lucide="loader-2" class="w-4 h-4 animate-spin"></i> Guardando...';
@@ -1428,6 +1460,7 @@
             const payload = {
                 company_name: document.getElementById('confCompanyName').value,
                 company_logo: document.getElementById('confLogoBase64').value,
+                company_ad: document.getElementById('confAdBase64').value,
                 portal_settings: {
                     m_start: document.getElementById('mStart').value, 
                     m_end: document.getElementById('mEnd').value,