/* ============ 商品折叠卡片 ============ */
.plan-card {
  background: #fff;
  border-radius: 14px;
  padding: 18px 20px;
  margin: 16px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}

.plan-title {
  font-size: 18px;
  font-weight: 600;
  color: #333;
}

.plan-subtitle {
  font-size: 14px;
  margin-top: 4px;
  color: #666;
}

.plan-toggle {
  margin-top: 10px;
  color: #409eff;
  font-size: 14px;
  cursor: pointer;
}

/* 折叠内容区域 */
.plan-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  margin-top: 10px;
}

.plan-content.open {
  padding-top: 10px;
}