.qr-copy-wechat{display:flex;align-items:center;justify-content:center;width:260px;max-width:calc(100vw - 48px);min-height:46px;margin:12px auto 0;padding:0 20px;border:0;border-radius:6px;background:#07885c;color:#fff;font:600 15px/1.2 "Microsoft YaHei",sans-serif;cursor:pointer;box-shadow:0 4px 12px rgba(7,136,92,.24);transition:transform .15s ease,background-color .2s ease}
.qr-copy-wechat:hover{background:#056c49}
.qr-copy-wechat:active{transform:scale(.97)}
.qr-copy-wechat.copied{background:#176b48}
.copy-wechat-modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(0,0,0,.5)}
.copy-wechat-dialog{width:min(420px,calc(100vw - 48px));padding:30px 24px 24px;border-radius:8px;background:#fff;text-align:center;box-shadow:0 16px 44px rgba(0,0,0,.3)}
.copy-wechat-dialog strong{display:block;margin-bottom:12px;color:#176b48;font:700 26px/1.2 "Microsoft YaHei",sans-serif}
.copy-wechat-dialog p{margin:0 0 22px;color:#3c4944;font:16px/1.7 "Microsoft YaHei",sans-serif}
.copy-wechat-dialog button{min-width:120px;height:42px;border:0;border-radius:5px;background:#07885c;color:#fff;font:600 15px/1 "Microsoft YaHei",sans-serif;cursor:pointer}
.mobile-contact{display:none}
@media(max-width:768px){
  body{padding-bottom:calc(90px + env(safe-area-inset-bottom,0px))}
  .mobile-contact{display:block;position:fixed;left:0;right:0;bottom:0;z-index:90;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));background:#fff;box-shadow:0 -3px 18px rgba(0,0,0,.16)}
  .mobile-contact button{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;height:64px;border:0;border-radius:6px;background:#07885c;color:#fff;font:600 18px/1.2 "Microsoft YaHei",sans-serif;cursor:pointer;transition:transform .15s ease,background-color .2s ease;animation:contact-pulse 2.8s ease-out infinite}
  .mobile-contact button:active{transform:scale(.97);background:#056c49;animation:none}
  .mobile-contact button.copied{background:#176b48;animation:none}
  .mobile-contact button:focus-visible{outline:3px solid #164b37;outline-offset:2px}
  .mobile-contact strong{font-weight:700;white-space:nowrap}
  .mobile-contact-icon{display:grid;place-items:center;width:25px;height:25px;border-radius:6px;background:#fff;color:#07885c;font-size:19px;line-height:1}
  .mobile-contact-status:empty{display:none}
  .mobile-contact-status:not(:empty){position:absolute;bottom:calc(84px + env(safe-area-inset-bottom,0px));left:50%;transform:translateX(-50%);max-width:calc(100vw - 32px);padding:10px 16px;border-radius:5px;background:#263b32;color:#fff;font-size:14px;text-align:center;box-shadow:0 4px 14px rgba(0,0,0,.25)}
  .qr-copy-wechat{display:none}
  .copy-wechat-modal{display:none}
  @keyframes contact-pulse{0%,55%,100%{box-shadow:0 0 0 0 rgba(7,136,92,0)}70%{box-shadow:0 0 0 7px rgba(7,136,92,.22)}88%{box-shadow:0 0 0 12px rgba(7,136,92,0)}}
}
@media(prefers-reduced-motion:reduce){.mobile-contact button{animation:none}}