diff --git a/style.css b/style.css
index 7f4e837..7756dc5 100644
--- a/style.css
+++ b/style.css
@@ -231,16 +231,15 @@
   to { opacity: 1; transform: translateY(0); }
 }
 
-/* ★ 安定したポップ（拡大→縮む）アニメーション */
-@keyframes popMarker {
-  0%   { transform: scale(1); }
-  35%  { transform: scale(1.25); }
-  55%  { transform: scale(0.92); }
-  100% { transform: scale(1); }
+/* ===== ピンの波紋パルス ===== */
+@keyframes pulseMarker {
+  0%   { transform: scale(1); opacity: 1; }
+  30%  { transform: scale(1.15); opacity: 0.9; }
+  60%  { transform: scale(1.05); opacity: 1; }
+  100% { transform: scale(1); opacity: 1; }
 }
 
-.pop-marker {
-  animation: popMarker 0.5s ease-out;
+.pulse-marker {
+  animation: pulseMarker 0.5s ease-out;
   transform-origin: bottom center;
-  will-change: transform;
 }