.welcome-pop {
  position: fixed;
  z-index: 200;
  top: 50%;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 13px;
  width: max-content;
  max-width: calc(100vw - 36px);
  padding: 22px 28px;
  border: 1px solid rgba(255, 250, 240, .55);
  border-radius: 16px;
  color: #fffaf0;
  background: rgba(37, 78, 87, .96);
  box-shadow: 0 20px 65px rgba(35, 28, 19, .32);
  transform: translate(-50%, -50%);
  animation: welcome-enter .28s ease-out both;
  pointer-events: none;
}
.welcome-pop p {
  margin: 0;
  font: 600 clamp(17px, 2.3vw, 24px)/1.55 system-ui, "Microsoft YaHei", sans-serif;
  letter-spacing: .02em;
}
.welcome-pop-icon { color: #f3ce83; font-size: 27px; }
.welcome-pop.is-leaving { opacity: 0; transition: opacity .2s ease; }

.wechat-contact {
  position: fixed;
  z-index: 65;
  left: max(16px, env(safe-area-inset-left));
  bottom: max(78px, calc(env(safe-area-inset-bottom) + 70px));
  display: grid;
  justify-items: center;
  width: 160px;
  color: #315c5a;
  font: 600 14px/1.4 system-ui, "Microsoft YaHei", sans-serif;
  letter-spacing: .08em;
}
.wechat-contact > span {
  margin-bottom: 7px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 253, 247, .94);
  box-shadow: 0 3px 12px rgba(55, 39, 20, .12);
}
.wechat-contact a {
  display: block;
  width: 152px;
  padding: 5px;
  border: 1px solid rgba(110, 88, 57, .2);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 7px 24px rgba(55, 39, 20, .18);
  transition: transform .18s ease;
}
.wechat-contact a:hover { transform: translateY(-2px); }
.wechat-contact a:focus-visible { outline: 3px solid #315c5a; outline-offset: 3px; }
.wechat-contact img { display: block; width: 100%; height: auto; border-radius: 6px; }

@keyframes welcome-enter {
  from { opacity: 0; transform: translate(-50%, calc(-50% + 10px)) scale(.98); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@media (max-width: 600px) {
  .welcome-pop { gap: 9px; padding: 18px 20px; text-align: center; }
  .welcome-pop-icon { font-size: 21px; }
  .wechat-contact { left: 10px; bottom: 132px; width: 112px; font-size: 12px; }
  .wechat-contact > span { margin-bottom: 5px; padding: 3px 9px; }
  .wechat-contact a { width: 106px; padding: 4px; border-radius: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  .welcome-pop { animation: none; }
  .welcome-pop.is-leaving, .wechat-contact a { transition: none; }
}