diff --git a/README.md b/README.md
index 19e0642..e4c146d 100644
--- a/README.md
+++ b/README.md
@@ -197,23 +197,23 @@ Brave Search API and YouTube Data API require keys. If omitted, those engines ar
 
 ```
 ┌───────────────────────────────────────┐
-│             HTTP Handler              │
-│      /search  /  /opensearch.xml      │
+│             HTTP Handler                     │
+│      /search  /  /opensearch.xml             │
 ├───────────────────────────────────────┤
-│            Middleware Chain           │
-│   Global → Burst → Per-IP → CORS      │
+│            Middleware Chain                  │
+│   Global → Burst → Per-IP → CORS           │
 ├───────────────────────────────────────┤
-│            Search Service             │
-│     Parallel engine execution         │
-│   WaitGroup + graceful degradation    │
+│            Search Service                    │
+│     Parallel engine execution                │
+│   WaitGroup + graceful degradation           │
 ├───────────────────────────────────────┤
-│             Cache Layer               │
-│  Valkey/Redis (optional; no-op if     │
-│              unconfigured)            │
+│             Cache Layer                      │
+│  Valkey/Redis (optional; no-op if            │
+│              unconfigured)                   │
 ├───────────────────────────────────────┤
-│        Engines (×11 default)          │
-│    Each runs in its own goroutine     │
-│   Failures → unresponsive_engines     │
+│        Engines (×11 default)                 │
+│    Each runs in its own goroutine            │
+│   Failures → unresponsive_engines           │
 └───────────────────────────────────────┘
 ```