.font-white{color:#fff;}
.font-black{color:#333;}
.font-center{text-align: center;}
.title-box h1{font-size: 48px; line-height: 64px; padding:160px 0 20px 0; font-weight: 600;}
.title-box p{line-height: 36px; font-size: 24px; padding:0 0 20px;}
.section{position: relative; width: 100%; height: 1200px;}
/*
.section .transi-up{opacity: 0; -webkit-transform: translate3d(0,30px,0); -moz-transform: translate3d(0,30px,0); transform: translate3d(0,30px,0);}
.section.is-visible .transi-up{opacity: 1; -webkit-transition: opacity .8s; -moz-transition: opacity .8s; transition: opacity .8s; -webkit-transform: translateZ(0); -moz-transform: translateZ(0); transform: translateZ(0);}
*/

.w68{width:68%;}
.left{float:left;}
.block{display: block;}

.product-banner{position: relative; height: 1000px; overflow: hidden; background: url('../images/speaker_banner.jpg') 50% no-repeat #141517;}
.product-banner .wrap{height: 100%; position: relative;}
.product-banner .title-box {width: 100%; color:#fff; height: 1000px; display: table-cell; vertical-align: middle;}
.product-banner .title-box h1{padding:0 0 36px;}
.product-banner .title-box .curve{background: #00a0e9; padding:6px 10px; margin:0 0 0 10px; color: #fff; border-radius: 10px;}
.product-banner .title-box p{color:#fff;}
.product-banner .title-box .fun{ line-height: 28px; font-size: 14px; color:#b2b2b2;}
.product-main-content{position: relative; overflow: hidden; box-sizing: border-box;}



.section_wificonn{height: auto; overflow: hidden; background: #fff;}
.section_wificonn .img-wificonn{background: url('../images/index_speaker_wificonn.jpg') center no-repeat; width: 1200px; height: 500px; margin:60px auto; position: relative;}

.section_voice{height: auto; overflow: hidden; background: #f7f7f7;}
.section_voice .img-say{background: url('../images/index_speaker_voice.jpg') center no-repeat; width: 1440px; height: 915px; margin:60px auto; position: relative;}


.section_response{height: 1200px; overflow: hidden; background: url('../images/index_speaker_response.jpg') center bottom no-repeat #fff;}