.map-section {
background: transparent; /* ✅ 透明背景 */
  padding: 60px 20px;
  text-align: center;
}

.map-wrapper {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}

.map-bg {
  width: 100%;
  height: auto;
  display: block;
}

.map-marker {
  position: absolute;
  width: 24px;
  height: 24px;
  background: url('../images/truck-marker.png') no-repeat center/contain;
  z-index: 2;
  animation: pulse 2s infinite ease-in-out;
}

/* 高亮城市动画 */
.map-marker.highlight {
  animation: glow 1.8s ease-in-out infinite;
}

/* 扩散动画（可切换） */
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

/* 闪光动画 */
@keyframes glow {
  0% { filter: drop-shadow(0 0 0px #fbca19); }
  50% { filter: drop-shadow(0 0 8px #fbca19); }
  100% { filter: drop-shadow(0 0 0px #fbca19); }
}