add architecture area color for blog cards

index.html

@@ -1302,6 +1302,9 @@
             .blog-card-area.area-video-scripts {
                 background: #00ff88;
             }
+            .blog-card-area.area-architecture {
+                background: #a78bfa;
+            }
             .blog-card-area.area-speed-run {
                 background: #f472b6;
             }