.sec1 {
    width: 100%;
    position: relative;
    margin: 53px 0 119px;
}
.sec1>img {
    width: 100%;
}
.sec1 .joke {
    width: 1520px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.sec1 .joke h2 {
    font-size: 42px;
    font-family: PingFang SC;
    font-weight: 500;
    color: #FFFFFF;
}
.sec2 .swiper-wrapper {
    transition-timing-function: cubic-bezier(0.77, 0, 0.175, 1) !important;
}
.sec2 .joke {
    width: 1520px;
    margin: 119px auto 150px;
    position: relative;
}
.sec2 .joke .swiper-slide {
    display: flex;

}
.sec2 .joke .swiper {
    width: 2670px;
}
.sec2 .joke .swiper-slide .img {
    width: 641px;
}
.sec2 .joke .swiper-slide .img img {
    display: block;
    width: 100%;
}
.sec2 .joke .swiper-slide .content {
    width: 690px;
    padding: 71px 192px 0 73px;
}
.sec2 .joke .swiper-slide .content h2 {
    font-size: 32px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #000000;
    opacity: 0;
    transform: translateY(30px);
    transition: 0.6s;
    transition-delay: 0.4s;
}
.sec2 .joke .swiper-slide .content p {
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 300;
    color: #000000;
    line-height: 26px;
    margin-top: 29px;
    opacity: 0;
    transform: translateY(30px);
    transition: 0.6s;
    transition-delay: 0.6s;
}
.sec2 .joke .swiper-slide-active .content h2,.sec2 .joke .swiper-slide-active .content p {
    opacity: 1;
    transform: translateY(0);
}
.sec2 .joke .btns {
    width: 1460px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: space-between;
    pointer-events: none;
}
.sec2 .joke .btns .iconfont {
    width: 46px;
    height: 46px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.6s;
    pointer-events: auto;
    cursor: pointer;
    color: #FFFFFF;
}
.sec2 .joke .btns .iconfont:nth-last-child(2) {
    transform: rotate(180deg);
}
.sec2 .joke .btns .iconfont:hover {

    background: #970005;
}
@media screen and (max-width: 1600px) {
    .sec1 .joke,.sec2 .joke,.sec2 .joke .btns {
        width: 90%;
    }
    .sec2 .joke .swiper {
        width: 140vw;
    }
    .sec1 .joke h2 {
        font-size: 36px;
    }
    .sec1 .joke img {
        width: 250px;
    }
    .sec2 .joke .swiper-slide .img,.sec2 .joke .swiper-slide .content {
        width: 50%;
    }
}
@media screen and (max-width: 1450px) {
    .sec2 .joke .swiper-slide .content h2 {
        font-size: 26px;
    }
    .sec1 .joke img {
        width: 200px;
    }
    .sec1 .joke h2 {
        font-size: 32px;
    }
    .sec2 .joke .swiper-slide .content {
        padding: 55px 50px 0 50px;
    }
}
@media screen and (max-width: 1023px) {
    .sec1 {
        height: 30vh;
    }
    .sec1>img{
        height: 100%;
    }
    .sec2 .joke .swiper {
        width: 100%;
    }
    .sec2 .joke .swiper-slide {
        flex-direction: column;
    }
    .sec2 .joke .swiper-slide .img, .sec2 .joke .swiper-slide .content{
        width: 100%;
    }
    .sec2 .joke .swiper-slide .content {
        padding: 10% 5% 0;
    }
    .sec2 .joke .swiper-slide .content h2 {
        font-size: 24px;
    }
    .sec2 .joke .btns {
        top: 32vw;
    }
    .sec2 .joke {
        margin: 60px auto;
    }
    .sec1 {
        margin: 53px 0 10px;
    }
    .sec1 .joke h2 {
        font-size: 28px;
    }

}
@media screen and (max-width: 768px) {
    .sec1 .joke {
        flex-direction: column;
    }
    .sec1 .joke img {
        width: 120px;
        margin: 20px 0 0;
    }
}