body{width: 100%;height: 100vh;overflow: hidden;background:url(../images/bg.jpg) no-repeat; background-size:100% 100%;position: relative; }
.particle_layer,.index_bg{position: absolute;left: 0;top: 0;z-index: 1}
.particle_layer{z-index: 2}
.bg_box{background: rgba(3, 15, 39, .3)}
.content{position: relative;width: 1080px;margin: 0 auto;z-index: 3;}
.logo{position: absolute;left: 0px;top:90px;width: 148px;height: 60px;background: url(../images/logo.png) no-repeat;background-size:100% 100%; }
.zxykj_content{position: absolute;left: 0;top: 50vh;width: 100%;text-align: center;color: #fff;margin-top: -184px;}
.center_p_z{font-size: 30px;line-height: 1;text-align: center;}
.center_p_x{font-size: 80px;padding: 30px 0;font-family: 'PHT';font-weight: 600;line-height: 1;text-align: center;}
.center_p_k{font-size: 24px;display: inline-block;padding: 15px 70px;background: #d98002;letter-spacing: 5px;line-height: 1;border-radius: 2px;text-align: center;}
.center_p_j{font-size: 30px;letter-spacing:20px; padding-top:50px;line-height: 1;text-align: center;text-align: center;}
.footer_box{color: #fff;position: absolute;left: 0;top: 92vh;width: 100%;text-align: center;font-size:16px;line-height:1.5}
.en_footer{letter-spacing: 40px;font-size: 18px;}
@media screen and (max-width: 769px) {
    body{background:url(../images/bg.jpg) no-repeat center; background-size:auto 100% ;}
    .particle_layer{display: none;}
	.footer_box{top:87vh;font-size:3.75vw;}
    .en_footer{letter-spacing: 7px;font-size: 3.75vw;}
    .zxykj_content{margin: 0;top: 30vh;}
    .content{width: 100%}
    .center_p_z{font-size: 6vw;}
    .center_p_x{font-size: 15vw;padding: 6vw 0;}
    .center_p_k{font-size: 4.75vw;padding: 3vw;}
    .center_p_j{padding-top: 40px;}
	.center_p_j img{width:50vw;height:auto}
    .logo{left: 50%;width: 24.67vw;height: 10vw;margin-left: -12.335vw;top: 20vw;}
}