.wechat-contact {
  position: fixed;
  right: 22px;
  bottom: 142px;
  z-index: 70;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.wechat-contact summary {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 17px;
  border-radius: 8px;
  background: #07c160;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
  cursor: pointer;
  list-style: none;
}

.wechat-contact summary::-webkit-details-marker { display: none; }

.wechat-contact summary::before {
  content: "微信";
  margin-right: 8px;
  font-size: 12px;
}

.wechat-panel {
  position: absolute;
  right: 0;
  bottom: 58px;
  width: 236px;
  padding: 14px;
  border: 1px solid #dfe8e3;
  border-radius: 12px;
  background: #fff;
  color: #16352a;
  text-align: center;
  box-shadow: 0 12px 36px rgba(0, 0, 0, .22);
}

.wechat-panel strong,
.wechat-panel span { display: block; }
.wechat-panel strong { margin-bottom: 10px; font-size: 15px; }
.wechat-panel span { margin-top: 8px; font-size: 12px; color: #52645d; }
.wechat-panel img { display: block; width: 100%; height: auto; }

@media (max-width: 640px) {
  .wechat-contact { right: 14px; bottom: 132px; }
  .wechat-contact summary { min-height: 46px; padding: 0 14px; }
  .wechat-panel { width: min(220px, calc(100vw - 28px)); }
}