.bigtop{
    width: 100%;
    height: 951px;
    position: relative;
    overflow: hidden;
    background: none;
    padding-top: 1px;
}

.bigtop::before{
    content: "";
    position: absolute;
    inset: 0;
    background: url(../img/bigtop.jpg) no-repeat center center / cover;
    transform: none;
    will-change: filter;
    animation: bigtop-breathe 14s ease-in-out infinite;
    z-index: 0;
}

.bigtop::after{
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 35%, rgba(255,255,255,.22), rgba(255,255,255,0) 55%),
                linear-gradient(110deg, rgba(255,255,255,0) 35%, rgba(255,255,255,.18) 50%, rgba(255,255,255,0) 65%);
    opacity: .25;
    transform: translateX(-18%);
    animation: bigtop-sweep 10s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

.wrap{
    width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.logo{
    width: 190px;
    height: 35px;
    background: url(../img/logo.png) no-repeat center center;
    display: flex;
    justify-content: space-between;
    margin-top: 33px;
    margin-left: 34px;
    opacity: 0;
    transform: translateY(-10px);
    animation: fade-down .8s ease forwards;
}

.logo a{
    display: block;
    width: 45%;
    height: 35px;
}

.bigtop-txt{
    width: 1140px;
    height: 586px;
    margin: 50px auto 0;
    display: block;
    opacity: 0;
    transform: translateY(16px) scale(.98);
    will-change: transform, opacity;
    animation: fade-up-zoom .95s cubic-bezier(.2,.9,.2,1) .15s forwards;
}

.bigtop-fx{
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.particle{
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.95), rgba(255,255,255,.15) 55%, rgba(255,255,255,0) 70%);
    filter: blur(.2px);
    opacity: .0;
    transform: translate3d(0, 0, 0);
    animation: particle-float 7.5s ease-in-out infinite;
}

.particle--1{ left: 12%; top: 70%; animation-delay: .2s;  animation-duration: 7.2s; transform: scale(.9); }
.particle--2{ left: 22%; top: 32%; animation-delay: 1.1s; animation-duration: 8.2s; transform: scale(.7); }
.particle--3{ left: 48%; top: 78%; animation-delay: .7s;  animation-duration: 7.9s; transform: scale(1.1); }
.particle--4{ left: 66%; top: 40%; animation-delay: 1.6s; animation-duration: 8.8s; transform: scale(.8); }
.particle--5{ left: 78%; top: 68%; animation-delay: .4s;  animation-duration: 7.6s; transform: scale(1); }
.particle--6{ left: 90%; top: 26%; animation-delay: 1.9s; animation-duration: 9.4s; transform: scale(.75); }

@keyframes fade-down{
    from{ opacity: 0; transform: translateY(-10px); }
    to  { opacity: 1; transform: translateY(0); }
}

@keyframes fade-up-zoom{
    from{ opacity: 0; transform: translateY(16px) scale(.98); }
    to  { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes float-y{
    0%, 100%{ transform: translateY(0) scale(1); }
    50%     { transform: translateY(-10px) scale(1.005); }
}

@keyframes bigtop-breathe{
    0%, 100%{ filter: saturate(1) brightness(1); }
    50%     { filter: saturate(1.03) brightness(1.02); }
}

@keyframes bigtop-sweep{
    0%, 100%{ transform: translateX(-18%); opacity: .18; }
    50%     { transform: translateX(18%);  opacity: .32; }
}

@keyframes particle-float{
    0%   { opacity: 0; transform: translateY(14px); }
    15%  { opacity: .55; }
    50%  { opacity: .35; transform: translateY(-16px); }
    85%  { opacity: .15; }
    100% { opacity: 0; transform: translateY(-30px); }
}

@media (prefers-reduced-motion: reduce){
    .bigtop::before,
    .bigtop::after,
    .logo,
    .bigtop-txt,
    .particle{
        animation: none !important;
        transform: none !important;
        opacity: 1 !important;
    }
}

/* two-main */
.two-main{
    width: 100%;
    /* height: 1467px; */
    background: url(../img/two-main.jpg) repeat center bottom;
    padding-bottom: 45px;
}

.xinwen_box{
    padding-top: 20px;
}

.xinwen_title{
    width: 100%;
    height: 65px;
}

.xinwen_info ul{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    /* padding-top: 8px; */
}

.xinwen_info ul li{
    width: 575px;
    padding: 25px 0;
    border-bottom: 2px solid #E9E9E9;
}

.xinwen_info ul li h3{
    font-size: 25px;
    font-weight: bold;
    color: #db251a;
}

.xinwen_info ul li p{
    font-size: 18px;
    line-height: 1.7;
    color: #333;
    margin-top: 10px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}
/* three-main */
.three-main{
    width: 100%;
    /* height: 1148px; */
    background: url(../img/three-main.jpg) no-repeat center bottom;
}

.video_title{
    margin: 120px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toptwo{
    width: 1200px;
    padding-top: 1px;
}

.topthree{
    width: 1200px;
    padding-top: 1px;
}

.download{
    display: block;
}

.toptwo ul{
    display: flex;
    margin-top: 30px;
}

.toptwo ul li{
    /* width: 360px; */
    width: 390px;
    margin-left: 15px;
}
.toptwo ul li:first-child{
    margin-left: 0;
}

.toptwo ul li img,.toptwo ul li iframe{
    width: 100%;
    /* height: 205px; */
    height: 220px;
}

.toptwo ul li span{
    display: block;
    text-align: center;
    color: #db251a;
}

.toptwo ul li span:nth-child(1){
    font-size: 22px;
    font-weight: bold;
    margin-top: 10px;
}

.toptwo ul li span:nth-child(2){
    font-size: 20px;
}

.topthree ul{
    display: flex;
    /* margin-top: 70px; */
    margin-top: 30px;
}

.topthree ul li{
    /* width: 360px; */
    width: 290px;
    margin-left: 20px;
}

.topthree ul li:first-child{
    margin-left: 0;
}

.topthree ul li img,.topthree ul li iframe{
    width: 100%;
    /* height: 205px; */
    height: 155px;
}

.topthree ul li span{
    display: block;
    text-align: center;
    color: #db251a;
}

.topthree ul li span:nth-child(1){
    font-size: 20px;
    font-weight: bold;
    margin-top: 10px;
}

.topthree ul li span:nth-child(2){
    font-size: 18px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
}

.four-main{
    width: 100%;
    background: url(../img/four-main.jpg) center top no-repeat #e2221d;
    padding-top: 1px;
}

.picture_box{
    /* margin-top: 175px; */
    width: 1200px;
    margin: 175px auto 0;
}

.picture_title{
    text-align: center;
}

.picture_rule{
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
}

.rule_down{
    display: block;
    width: 260px;
    height: 51px;
    background: url(../img/xiazai.png) no-repeat center center;
    text-align: center;
    line-height: 51px;
    color: #fff;
    font-size: 24px;
}

.picture_list1{
    width: 100%;
    margin-top: 30px;
    text-align: center;
    display: flex;
    justify-content: space-between;
}

.list1_pic1{
    width: 288px;
}

.imgbox1{
    width: 288px;
    height: 400px;
    background: rgba(255, 255, 255, 0.3);
    padding-top: 20px;
}

.list1_pic3{
    width: 870px;
}

.list1_pic3 .imgbox2{
    background: none;
    width: 870px;
    height: 400px;
    display: flex;
    justify-content: space-evenly;
    padding-top: 20px;
    background: rgba(255, 255, 255, 0.3);
}

.list1_pic3 .imgbox2 img{
    width: 260px;
    height: 360px;
}
.imgbox1{
    margin: 0 auto;
    text-align: center;
}

.imgbox1 img{
    width: 260px;
    height: 360px;
}

.picture_list1 p,.list2_pic3 p,.list2_pic1 p,.list3_pic3 p,.list3_pic4 p{
    margin-top: 20px;
    font-size: 20px;
    color: #fff;
}

.picture_list1 p span:nth-child(1){
    display: block;
}

.picture_list1 p span:nth-child(1),.list2_pic3 p span:nth-child(1),.list2_pic1 p span:nth-child(1),.list3_pic3 p span:nth-child(1),.list3_pic4 p span:nth-child(1){
    font-weight: bold;
    margin-right: 10px;
}

.picture_list1 p span:nth-child(2),.list2_pic3 p span:nth-child(2),.list2_pic1 p span:nth-child(2),.list3_pic3 p span:nth-child(2),.list3_pic4 p span:nth-child(2){
    font-size: 19px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
}

.picture_rule.picture_rule2{
    margin-top: 50px;
}

.picture_list2{
    margin-top: 35px;
}

.list2_pic3,.list2_pic1{
    text-align: center;
}

.list2_pic1{
    margin: 45px 0;
}
.imgbox2{
    width: 875px;
    /* height: 365px; */
    height: 400px;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 auto;
    text-align: center;
    padding-top: 18px;
    display: flex;
    justify-content: space-evenly;
}

.imgbox2 img{
    width: 260px;
    height: 360px;
}

.imgbox2 img:hover,.imgbox3 img:hover,.imgbox4 img:hover, .imgbox5 img:hover,.imgbox6 img:hover{
    scale: 1.05;
    transition: all .3s ease;
}

.imgbox3{
    width: 545px;
    height: 385px;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 auto;
    text-align: center;
    padding-top: 15px;
}

.imgbox3 img{
    width: 500px;
    height: 355px;
}

.picture_rule.picture_rule3{
    margin-top: 60px;
}

.picture_list3{
    margin-top: 30px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.list3_pic3{
    width: 585px;
    text-align: center;
    margin-bottom: 30px;
}

.imgbox4,.imgbox5{
    width: 585px;
    height: 280px;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 auto;
    text-align: center;
    padding-top: 12.5px;
    display: flex;
    justify-content: space-evenly;
}

.imgbox4 img{
    width: 180px;
    height: 250px;
}

.imgbox5 img{
    /* width: 350px; */
    height: 250px;
}

.list3_pic4{
    width: 100%;
    text-align: center;
}

.imgbox6{
    width: 100%;
    height: 215px;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 auto;
    text-align: center;
    padding-top: 11px;
    display: flex;
    justify-content: space-evenly;
}

.imgbox6 img{
    width: 275px;
    height: 195px;
}

.five-main{
    width: 100%;
    background: url(../img/five-main.jpg) center top no-repeat;
    padding-top: 1px;
    height: 706px;
}

.yxzz_title{
    /* height: 120px; */
    margin-top: 150px;
    text-align: right;
    padding-right: 80px;
}

.yxzz_img{
    margin-top: 30px;
    height: 47px;
    text-align: right;
    padding-right: 77px;
}

.yxzz_img img:nth-child(2){
    margin-left: 20px;
}
.yxjlist{
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top: 40px;
    background: url(../img/line_03.png) center top no-repeat;
}

.yxjitem{
    width: 30%;
    padding-left: 10px;
    margin-bottom: 30px;
}

.yxjitem h3{
    font-size: 22px;
    font-weight: bold;
    color: #fff;
}

.yxjitem p{
    font-size: 19px;
    margin-top: 5px;
    color: #fff;
}