Update index.html

index.html

@@ -514,7 +514,9 @@
                 
                 <!-- 중앙 항공기 심볼 -->
                 <div class="rwr-center">
-                    <div class="rwr-aircraft-symbol"></div>
+                    <div class="rwr-aircraft-symbol">
+                        <img src="effects/symbol.png" alt="Aircraft" onerror="this.parentElement.classList.add('no-image')">
+                    </div>
                 </div>
                 
                 <!-- 위협 표시 영역 -->