/* qf2 interaction & layout fixes */
.header .popup { position: absolute; left: 50%; transform: translateX(-50%); top: 70px; z-index: 1000; }
.header .popup.show,
.header .center-item:hover .popup,
.header .center:hover .popup { display: block !important; }
.header { position: relative; z-index: 100; }
.header .center { position: relative; }
.header .weixin-box { position: relative; cursor: pointer; }
.header .weixin-box .qrcode,
.header .weixin-box img.qr { display: none; position: absolute; top: 36px; left: 50%; transform: translateX(-50%); width: 120px; z-index: 20; background: #fff; padding: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.12); }
.header .weixin-box:hover .qrcode,
.header .weixin-box:hover img.qr { display: block; }
.typing-effect { display: inline-block; }