diff --git a/src/app/products/[id]/[slug]/page.tsx b/src/app/products/[id]/[slug]/page.tsx
index c711a96..b92552c 100644
--- a/src/app/products/[id]/[slug]/page.tsx
+++ b/src/app/products/[id]/[slug]/page.tsx
@@ -10,6 +10,7 @@ import HomeContactStrip from "@/components/HomeContactStrip";
 import {
   getProductById,
   getProducts,
+  productCatalog,
   productImages,
   productPriceLabel,
   stripHtml,
@@ -52,6 +53,7 @@ export default async function ProductDetailPage({
   }
 
   const images = productImages(product);
+  const catalog = productCatalog(product);
   const shortDesc = product.summary || stripHtml(product.descriptionHtml, 160);
 
   const related = product.categoryId
@@ -117,6 +119,49 @@ export default async function ProductDetailPage({
                   استعلام قیمت
                 </Link>
               </div>
+
+              {catalog && (
+                <a
+                  href={catalog.url}
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  download={catalog.fileName}
+                  className="mt-6 flex items-center gap-3 rounded-2xl border border-primary/15 bg-surface px-4 py-3.5 text-primary transition-colors hover:border-primary/35 hover:bg-primary/5"
+                >
+                  <span className="flex h-11 w-11 shrink-0 items-center justify-center rounded-xl bg-primary/10 text-primary">
+                    <svg width="22" height="22" viewBox="0 0 24 24" fill="none" aria-hidden>
+                      <path
+                        d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8l-6-6Z"
+                        stroke="currentColor"
+                        strokeWidth="1.75"
+                        strokeLinejoin="round"
+                      />
+                      <path
+                        d="M14 2v6h6M8 13h8M8 17h5"
+                        stroke="currentColor"
+                        strokeWidth="1.75"
+                        strokeLinecap="round"
+                        strokeLinejoin="round"
+                      />
+                    </svg>
+                  </span>
+                  <span className="min-w-0 flex-1">
+                    <span className="block text-sm font-semibold">دانلود فایل پیوست</span>
+                    <span className="mt-0.5 block truncate text-xs text-foreground/70" dir="auto">
+                      {catalog.fileName}
+                    </span>
+                  </span>
+                  <svg width="18" height="18" viewBox="0 0 24 24" fill="none" aria-hidden className="shrink-0 opacity-70">
+                    <path
+                      d="M12 3v12m0 0 4-4m-4 4-4-4M5 19h14"
+                      stroke="currentColor"
+                      strokeWidth="1.75"
+                      strokeLinecap="round"
+                      strokeLinejoin="round"
+                    />
+                  </svg>
+                </a>
+              )}
             </div>
           </div>
 
diff --git a/src/lib/meshkee.ts b/src/lib/meshkee.ts
index 8fc0b57..71ac35c 100644
--- a/src/lib/meshkee.ts
+++ b/src/lib/meshkee.ts
@@ -113,6 +113,9 @@ export type ProductStore = {
   inStock: boolean;
 };
 
+/** Gallery entry from Meshkee — list/detail may return a URL string or `{ url }`. */
+export type ProductImageRef = string | { url: string; mediaId?: string };
+
 export type Product = {
   id: string;
   businessId: string;
@@ -131,7 +134,11 @@ export type Product = {
   thumbnailUrl: string | null;
   thumbnail: string | null;
   image: string | null;
-  images: string[];
+  images: ProductImageRef[];
+  /** Attached catalog / datasheet file (PDF etc.), when the owner uploaded one. */
+  catalogUrl: string | null;
+  catalogFileName: string | null;
+  catalogMediaId: string | null;
   commentCount: number;
   variantCount: number;
   createdAt: string;
@@ -200,11 +207,27 @@ export function productImage(product: Product): string | null {
   return product.thumbnail || product.image || product.thumbnailUrl || null;
 }
 
-/** Unique gallery URLs: `images[]` first, then the primary thumbnail/image. */
+function imageRefUrl(ref: ProductImageRef | null | undefined): string | null {
+  if (!ref) return null;
+  if (typeof ref === "string") return ref || null;
+  return typeof ref.url === "string" && ref.url ? ref.url : null;
+}
+
+/**
+ * Unique gallery URLs for the product detail lightbox.
+ * Primary thumbnail/image first, then every gallery entry (API may return
+ * `images` as `{ url, mediaId }[]` rather than plain strings).
+ */
 export function productImages(product: Product): string[] {
   const seen = new Set<string>();
   const out: string[] = [];
-  for (const url of [...(product.images ?? []), product.thumbnail, product.image, product.thumbnailUrl]) {
+  for (const ref of [
+    product.thumbnail,
+    product.image,
+    product.thumbnailUrl,
+    ...(product.images ?? []),
+  ]) {
+    const url = imageRefUrl(ref as ProductImageRef);
     if (!url || seen.has(url)) continue;
     seen.add(url);
     out.push(url);
@@ -212,6 +235,19 @@ export function productImages(product: Product): string[] {
   return out;
 }
 
+/** Attached catalog/datasheet when the business uploaded one in Meshkee. */
+export function productCatalog(
+  product: Product
+): { url: string; fileName: string } | null {
+  const url = product.catalogUrl?.trim();
+  if (!url) return null;
+  const fileName =
+    product.catalogFileName?.trim() ||
+    decodeURIComponent(url.split("/").pop() || "catalog") ||
+    "فایل پیوست";
+  return { url, fileName };
+}
+
 export function productPriceLabel(product: Product): string {
   if (product.store?.minPrice) {
     const formatted = new Intl.NumberFormat("fa-IR").format(product.store.minPrice);