.page-ctn{
    padding-top: calc(116rem / 16);
    overflow-x: hidden;
}

.swiper-slide{
    height: calc(800vw / 19.2);
}

.banner-swiper::before{
    content: "";
    position: absolute;
    width: 100%;
    height: calc(560vw / 19.2);
    bottom: 0;
    left: 0;
    background: #221f20;
    z-index: 240;
}

.banner-swiper .swiper-wrapper{
    z-index: 250;
}

.vid-ctn,
.img-ctn,
.txt-ctn,
.banner-img-ctn{
    z-index: 270;
    position: absolute;
    opacity: 0;
    transition: 1.2s cubic-bezier(.1, .5, .5, .9);
}

.banner-img-ctn{
    z-index: 280;
}

.back-img-ctn{
    z-index: 200;
}

.txt-ctn, .back-img-ctn{
    transition: .6s;
}

.swiper-wrapper{
    z-index: 210;
}

.swiper-slide .vid1, .swiper-slide .fan1-ctn, .swiper-slide .fan2-ctn{
    transform: translateX(-20%);
}

/*.swiper-slide .vid2, .swiper-slide .vid3, .swiper-slide .back-img-ctn, .swiper-slide .txt-ctn{
    transform: translateX(20%);
}*/

/*.banner-img-ctn{
    transform: translateY(20%);
}*/

.swiper-slide-active .vid-ctn, .swiper-slide-duplicate-active .vid-ctn,
.swiper-slide-active .img-ctn, .swiper-slide-duplicate-active .img-ctn,
.swiper-slide-active .banner-img-ctn, .swiper-slide-duplicate-active .banner-img-ctn{
    opacity: 1;
    transform: none;
    transition: 1s .4s cubic-bezier(.1, .5, .5, .9);
}

.first-screen .txt-ctn,
.first-screen .back-img-ctn{
    opacity: 1;
    transform: none;
    transition: 1s .4s cubic-bezier(.1, .5, .5, .9);
    white-space: nowrap;
}

.vid-ctn video, .img-ctn img{
    display: block;
    width: 100%;
    height: auto;
}

.vid1{
    top: calc(54vw / 19.2);
    left: 0;
    width: calc(970vw / 19.2);
}

.vid2{
    width: calc(604vw / 19.2);
    top: calc(377vw / 19.2);
    left: calc(990vw / 19.2);
}

.vid3{
    right: 0;
    width: calc(354vw / 19.2);
    top: calc(148vw / 19.2);
}

.back-img-ctn{
    top: calc(10vw / 19.2);
    left: calc(830vw / 19.2);
    width: calc(854vw / 19.2);
}

.fan1-ctn{
    width: calc(449vw / 19.2);
    bottom: 0;
    left: calc(440vw / 19.2);
}

.fan2-ctn{
    width: calc(83vw / 19.2);
    top: calc(628vw / 19.2);
    left: calc(346vw / 19.2);
}

.txt-ctn{
    left: calc(970vw / 19.2);
    right: calc(354vw / 19.2);
    width: auto;
    text-align: center;
    top: calc(276vw / 19.2);
    letter-spacing: .02em;
    color: #8b634b;
    font-size: calc(24rem / 16);
    line-height: calc(28em / 24);
    font-weight: 500;
    position: absolute;
}

.banner-img-ctn{
    width: 88%;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    margin: 0 auto;
    z-index: 270;
}

.banner-img-ctn, .txt-ctn{

}

.banner-img-ctn img{
    display: block;
    width: 100%;
    height: auto;
}

.banner-swiper>.banner-pagination{
    z-index: 290;
    position: absolute;
    bottom: 2rem;
    height: 1rem;

    display: flex;
    justify-content: center;
    align-items: center;
}

.banner-pagination .swiper-pagination-bullet{
    width: calc(9rem / 16);
    height: calc(9rem / 16);
    opacity: 1;
    border: 1px solid #8b634b;
    background: transparent;
}

.banner-pagination .swiper-pagination-bullet-active{
    background: #8b634b;
}

.banner-swiper{
    position: relative;
    z-index: 208;
    overflow: visible;
}

.banner-swiper::after{
    content: "";
    width: 0;
    height: 0;
    border-top: calc(7rem / 16) solid #221f20;
    border-left: calc(9rem / 16) solid transparent;
    border-right: calc(9rem / 16) solid transparent;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    top: 100%;
}

.discovers{
    position: relative;
    background-color: #b5b6b8;
    z-index: 205;
}
.discovers::after{
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: url("../images/index/discover_back.jpg") center/cover no-repeat;
    z-index: 210;
    mix-blend-mode: overlay;
}

.discovers .wrapper{
    /*
    1920 1110
    960 850
    960k = 260
    k = 27.083
    */

    width: calc(27.083vw + 590px);
    padding-top: calc(45rem / 16);
    padding-bottom: calc(90rem / 16);
    margin: auto;
    z-index: 240;
    position: relative;
}

.discovers .title{
    color: #8b634b;
    font-size: calc(15.41rem / 16);
    line-height: calc(17em / 15.41);
    margin-bottom: calc(42rem / 16);
    text-align: center;
    font-weight: 600;
    letter-spacing: .2em;
}

.discovers .title br{
    display: none;
}

.discover-list{
    display: flex;
    /*
    1920 52
    960 30
    960k = 22
    k = 2.29
    */
    margin-right: calc(-2.29vw - 8px);
    color: #8b634b;
}

.discover-list li{
    width: calc(100% / 3 - (2.29vw + 8px));
    flex: 0 0 auto;
    margin-right: calc(2.29vw + 8px);
}

.discover-list a{
    display: block;
    width: 100%;
    height: 0;
    padding-bottom: 100%;
    background-color: #fff;
    position: relative;
}

.discover-list a *{
    position: absolute;
}

.discover-list a .img-mask{
    width: 68.5%;
    height: 68.5%;
    filter: brightness(1.1) contrast(.95) grayscale(1);
    transition: .4s;
    overflow: hidden;
}

.discover-list a .img-mask img{
    display: block;
    width: 100%;
    height: auto;
    transition: .6s;
}

.discover-list a .title-en{
    font-size: calc(20.02rem / 16);
    line-height: calc(20.89em / 20.02);
    font-weight: 600;
}

.discover-list a .title-cn{
    font-size: calc(22.63rem / 16);
    line-height: calc(23em / 22.63);
    writing-mode: tb-rl;
    letter-spacing: .2em;
}

@supports (writing-mode: vertical-rl) {
    /* ie dumb ass */
    .discover-list a .title-cn{
        writing-mode: vertical-rl;
    }
}

.discover-list li:nth-of-type(1) .img-mask{
    left: calc(22rem / 16);
    top: calc(22rem / 16);
}

.discover-list li:nth-of-type(2) .img-mask{
    left: calc(22rem / 16);
    bottom: calc(22rem / 16);
}

.discover-list li:nth-of-type(3) .img-mask{
    right: calc(22rem / 16);
    top: calc(22rem / 16);
}

.discover-list li:nth-of-type(1) .title-cn{
    top: calc(22rem / 16);
    right: calc(12rem / 16);
}

.discover-list li:nth-of-type(2) .title-cn{
    bottom: calc(22rem / 16);
    right: calc(15rem / 16);
}

.discover-list li:nth-of-type(3) .title-cn{
    top: calc(22rem / 16);
    left: calc(15rem / 16);
}

.discover-list li:nth-of-type(1) .title-en{
    bottom: calc(22rem / 16);
    left: calc(22rem / 16);
}

.discover-list li:nth-of-type(2) .title-en{
    top: calc(22rem / 16);
    left: calc(15rem / 16);
}

.discover-list li:nth-of-type(3) .title-en{
    left: calc(31.5% - 22rem / 16);
    bottom: calc(24rem / 16);
}

.discover-list a:hover .img-mask{
    filter: none;
}

.discover-list a:hover .img-mask img{
    transform: scale(1.1);
}

.btn-prev,
.btn-next{
    width: calc(70rem / 16);
    height: calc(70rem / 16);
    position: absolute;
    top: 0;
    bottom: 2rem;
    margin: auto;
    transition: .3s;
    cursor: pointer;
    z-index: 405;
    opacity: 0;
}

.btn-prev{
    background: url("../images/btn_prev.svg") center/contain no-repeat;
    left: 0;
}

.btn-next{
    background: url("../images/btn_next.svg") center/contain no-repeat;
    right: 0;
}

.btn-prev:hover{
    background: url("../images/btn_prev_hover.svg") center/contain no-repeat;
}

.btn-next:hover{
    background: url("../images/btn_next_hover.svg") center/contain no-repeat;
}

.banner-swiper:hover .btn-prev,
.banner-swiper:hover .btn-next{
    opacity: 1;
}


.btn-play{
    width: calc(160vw / 19.2);
    flex: 0 0 auto;
    color: white;
    font-size: 1rem;
    line-height: calc(14rem / 16);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;

    position: absolute;
    right: calc(36vw / 19.2);
    bottom: calc(32vw / 19.2);
    padding-left: calc(54vw / 19.2);
    height: calc(42vw / 19.2);
    cursor: pointer;
}

.btn-play .cn{
    letter-spacing: .15em;
    font-size: calc(13.86vw / 19.2);
}

.btn-play .en{
    font-size: calc(12.14vw / 19.2);
}

.btn-play::after{
    content: "";
    display: block;
    position: absolute;
    width: calc(42vw / 19.2);
    height: calc(42vw / 19.2);
    top: 0;
    left: 0;
    border-radius: 50%;
    background: center/contain no-repeat;
}

.btn-play:hover::after{
    background-color: rgba(255, 255, 255, .25);
}

.btn-play::after{
    background-image: url("../images/index/play.svg");
}

.video-layer{
    position: absolute;
    background-color: #000000;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    visibility: hidden;
    transition: .2s;
    z-index: 2000;
}

.video-layer.show{
    opacity: 1;
    visibility: visible;
    transition: .4s;
}

.site-footer.bring-to-front{
    z-index: 2010;
}

.btn-close-layer{
    position: absolute;
    top: calc(115rem / 16);
    left: 0;
    right: 0;
    margin: auto;
    width: calc(33rem / 16);
    height: calc(33rem / 16);
    background: url("../images/index/close.svg") center/contain no-repeat;
    cursor: pointer;
    opacity: 1;
    visibility: visible;
    transition: .2s;
}

.btn-close-layer:hover{
    transform: scale(1.2);
}

.video-layer .video-ctn{
    position: absolute;
    top: calc(174rem / 16);
    left: 0;
    right: 0;
    /*
    1920 1348
    960 900
    960k = 448
    */

    width: calc(46.667vw + 452px);
    margin: auto;
}
.video-layer .video-ctn video{
    width: 100%;
    height: auto;
    display: block;
}

.vid3 img{
    display: none;
}

.wx .vid3 video{
    display: none;
}

.wx .vid3 img{
    display: block;
}

body.fullscreen.hide-cursor .btn-close-layer{
    opacity: 0;
    visibility: hidden;
}

@media (max-width: 750px) {
    .hide-on-mobile{
        display: none;
    }
    .swiper-slide{
        height: calc(56.25vw + 126rem / 24);
    }

    .banner-swiper:hover .btn-prev, .banner-swiper:hover .btn-next{
        opacity: 0;
        pointer-events: none;
    }

    .discovers .title{
        letter-spacing: .24em;
        margin-bottom: calc(32rem / 24);
    }

    .discovers .title br{
        display: block;
    }

    .discovers .wrapper{
        width: 100%;
        padding: calc(30rem / 24) calc(106rem / 24) calc(90rem / 24) calc(106rem / 24);
    }
    .discover-list{
        margin-right: 0;

        flex-direction: column;
    }
    .discover-list li{
        width: 100%;
        margin-right: 0;
        margin-bottom: calc(64rem / 24);
    }

    .discover-list li:nth-of-type(1) .img-mask{
        left: calc(35.4rem / 24);
        top: calc(35.4rem / 24);
    }

    .discover-list li:nth-of-type(2) .img-mask{
        left: calc(35.4rem / 24);
        bottom: calc(35.4rem / 24);
    }

    .discover-list li:nth-of-type(3) .img-mask{
        right: calc(35.4rem / 24);
        top: calc(35.4rem / 24);
    }

    .discover-list li:nth-of-type(1) .title-cn{
        top: calc(35.4rem / 24);
        right: calc(21rem / 24);
    }

    .discover-list li:nth-of-type(2) .title-cn{
        bottom: calc(35.4rem / 24);
        right: calc(29rem / 24);
    }

    .discover-list li:nth-of-type(3) .title-cn{
        top: calc(35.4rem / 24);
        left: calc(29rem / 24);
    }

    .discover-list li:nth-of-type(1) .title-en{
        bottom: calc(35.4rem / 24);
        left: calc(35.4rem / 24);
    }

    .discover-list li:nth-of-type(2) .title-en{
        top: calc(35.4rem / 24);
        left: calc(35.4rem / 24);
    }

    .discover-list li:nth-of-type(3) .title-en{
        left: calc(31.5% - calc(35.4rem / 24));
        bottom: calc(24rem / 16);
    }

    .discover-list a .title-cn{
        font-size: calc(31.76rem / 24);
    }

    .discover-list a .title-en{
        font-size: calc(33.03rem / 24);
    }

    .discover-list a .img-mask{
        width: 68.5%;
        height: 68.5%;
        filter: none;
        transition: .3s;
    }

    .discovers::after{
        background-image: url("../images/index/discover_back_mobile.jpg");
    }

    .banner-swiper{
        padding-bottom: calc(100rem / 24)
    }
    .banner-swiper>.banner-pagination{
        bottom: calc((100rem / 24 - 1rem) / 2);
    }

    .vid1{
        width: 100%;
        height: 56.25vw;
        left: 0;
        bottom: 0;
        top: auto;
        transform: none;
    }

    .banner-swiper::before{
        height: 86.4vw;
    }

    .vid3{
        right: auto;
        width: 46.7%;
        height: auto;
        top: calc(-46.7vw * 0.5625 * 0.5);
        transform: none;
    }
    .banner-pagination .swiper-pagination-bullet{
        width: calc(12rem / 24);
        height: calc(12rem / 24);
    }
    .swiper-container-horizontal>.swiper-pagination-bullets .swiper-pagination-bullet{
        margin: calc(9rem / 24);
    }

    .back-img-ctn{
        width: 66%;
        top: calc(-144rem / 24);
        right: 34vw;
        left: auto;
    }

    .banner-swiper .txt-ctn,
    .banner-swiper .back-img-ctn{
        opacity: 1;
        transition: 1s;
    }

    .first-screen .back-img-ctn{
        right: 0;
    }

    .txt-ctn{
        font-size: calc(23.41rem / 24);
        line-height: calc(25.33em / 23.41);
        width: 57.3%;
        height: calc(84rem / 24);
        padding-top: calc((84rem / 24 - 25.33em / 23.41 * 2) / 2);
        left: auto;
        right: 0;
        background: #231f20;
        top: calc(-84rem / 24);
    }
    .first-screen .txt-ctn{
        top: calc((86.4vw - 56.25vw - calc(100rem / 24) - (84rem / 24)) / 2);
        background: transparent;
    }

    .banner-img-ctn{
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        transform: none;
    }

    .banner-img-ctn img{
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        object-fit: cover;
    }

    .btn-play{
        display: none;
    }

    .video-layer{
        position: fixed;
        width: 100vw;
        height: 100vh;
        left: 0;
        top: 0;
    }

    .video-layer .video-ctn{
        width: 100vw;
        height: 56.25vw;
        top: 0;
        bottom: 0;
        margin: auto;
    }
}