diff --git a/src/backend/wayland/wl_backend.c b/src/backend/wayland/wl_backend.c
index 6699f5e..1ce4cf0 100644
--- a/src/backend/wayland/wl_backend.c
+++ b/src/backend/wayland/wl_backend.c
@@ -9394,13 +9394,33 @@ static void wl_menu_paint_entry(WMenu *menu, int index, int selected)
                      w - 8 - tw, text_y, entry->rtext, strlen(entry->rtext));
     }
 
-    /* Draw cascade arrow for submenus (right-pointing triangle) */
+    /* Draw cascade arrow for submenus (3D right-pointing triangle matching X11) */
     if (entry->cascade >= 0) {
-        int ay = y + h / 2;
-        for (int i = 0; i < 5; i++)
-            for (int j = -(4 - i); j <= (4 - i); j++)
-                if (w - 12 + i < w && ay + j >= 0 && ay + j < fb->height)
-                    dst[(ay + j) * stride + (w - 12 + i)] = selected ? 0xFFFFFFFF : 0xFF000000;
+        uint32_t dim_c   = 0xFF606060;
+        uint32_t light_c = 0xFFE0E0E0;
+        uint32_t dark_c  = 0xFF303030;
+        /* Top edge: dim line from (w-11, y+6) to (w-6, y+h/2-1) */
+        int x0 = w - 11, y0 = y + 6, x1 = w - 6, y1 = y + h / 2 - 1;
+        for (int i = 0; i <= 5; i++) {
+            int lx = x0 + i * (x1 - x0) / 5;
+            int ly = y0 + i * (y1 - y0) / 5;
+            if (lx >= 0 && lx < (int)fb->width && ly >= 0 && ly < fb->height)
+                dst[ly * stride + lx] = dim_c;
+        }
+        /* Bottom edge: light line from (w-11, y+h-8) to (w-6, y+h/2-1) */
+        y0 = y + h - 8;
+        for (int i = 0; i <= 5; i++) {
+            int lx = x0 + i * (x1 - x0) / 5;
+            int ly = y0 + i * (y1 - y0) / 5;
+            if (lx >= 0 && lx < (int)fb->width && ly >= 0 && ly < fb->height)
+                dst[ly * stride + lx] = light_c;
+        }
+        /* Left edge: dark vertical line at w-12 from y+6 to y+h-8 */
+        int lx = w - 12;
+        if (lx >= 0 && lx < (int)fb->width)
+            for (int ly = y + 6; ly <= y + h - 8 && ly < fb->height; ly++)
+                if (ly >= 0)
+                    dst[ly * stride + lx] = dark_c;
     }
 
     /* Bevel lines (separators between entries) */