html{background: #fff}
.wmain-81{width:1000px;margin:0 auto}
.topic-banner{position: relative;overflow: hidden;height:370px;text-align: center;}
.topic-banner img{position: absolute;top:0;display:block;left:50%;margin-left:-960px;}
.topic-bg-2{height:730px;background-image:url('2.jpg');}
.topic-bg-3{height:720px;background-image:url('3.jpg');}
.topic-bg-4{height:700px;background-image:url('4.jpg');position: relative}
.topic-form input{width:430px;height:40px;font-size: 2.6rem;line-height: 40px;border:none;position: absolute;left:338px;outline: none;color:#666}
.topic-company{top:408px}
.topic-name{top:458px}
.topic-phone{top:508px}
.topic-submit{width:200px;height:40px;position: absolute;left:399px;top:563px}
.box-swiper{background:#FFF9EF}
.swiper-container{width: 100%;padding:20px 0}
.swiper-slide{width:340px;height: 256px;padding:10px;border-radius: 8px;box-shadow: 0 3px 3px #666}
.swiper-slide a{display: block;width:100%;height:100%;position: relative}
.swiper-slide a img{width:100%;height: 100%}
.swiper-slide a p{position: absolute;bottom: 0;left: 0;width: 100%;line-height: 40px;background:#fff;opacity: 0.8;color:#333;text-indent: 16px;font-size: 16px}
.swiper-slide-next{background:#fff}
.swiper-slide-prev{background: #F6F6F6}
.swiper-slide-active{background:#68D8A8}
.swiper-button-prev,.swiper-button-next{top:50%;width:52px;height: 52px;font-weight: 700;--swiper-navigation-size: 28px;color:#68D8A8;}
.swiper-button-prev{left:16px}
.swiper-button-next{right: 16px}
.topic-bg-icon{position: absolute;width:90px;height:120px;left:50%;background-image:url('icon.png');background-repeat: no-repeat;opacity: 0.1;z-index: -1}