.ai .head,.ai .head .banner_swiper{position:relative;width:100%}.ai .head .banner_swiper{height:640px;text-align:center}.ai .head .banner_swiper .swiper-slide{color:#000;height:640px;text-align:left}.ai .head .banner_swiper .swiper-slide.banner1{background:url(/static/img/banner1.47b9bf3.jpg) 50% no-repeat;background-size:cover}.ai .head .banner_swiper .swiper-slide.banner2{background:url(/static/img/banner2.6c7bbae.jpg) 50% no-repeat;background-size:cover}.ai .head .banner_swiper .swiper-slide .banner-txt1{font-size:50px;line-height:60px;margin:184px 0 0 160px}.ai .head .banner_swiper .swiper-slide .banner-txt2{font-size:24px;margin:8px 0 0 160px}.ai .head .banner_swiper .swiper-slide .zixun{background:#266dfb;color:#fff;font-size:16px;height:40px;line-height:40px;margin:24px 0 0 160px;width:160px}.ai .ai_content{text-align:center}.ai .ai_content .m_title{color:#091621;font-size:30px;line-height:33px}.ai .ai_content .md_shengtai{background-color:#fff;width:100%}.ai .ai_content .md_dizuo{background:#f4f8ff;width:100%}.ai .ai_content .md_aidev{background:#fff;width:100%}