diff --git a/style.css b/style.css
index fb6f2c1..fc4098c 100644
--- a/style.css
+++ b/style.css
@@ -293,3 +293,20 @@
   60%  { transform: scale(1.05); opacity: 1; }
   100% { transform: scale(1); opacity: 1; }
 }
+
+/* Google Maps風ラベル（はみ出し防止版） */
+.pin-label {
+  background: white;
+  padding: 2px 6px;
+  border-radius: 6px;
+  font-size: 13px;
+  color: #333;
+  white-space: nowrap;
+  max-width: 120px;         /* ★ 最大幅を決める */
+  overflow: hidden;         /* ★ はみ出し防止 */
+  text-overflow: ellipsis;  /* ★ … で省略 */
+  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
+  transform: translateY(-6px);
+  display: inline-block;
+  text-align: center;
+}