.watch-video-btn-a {
    background: rgba(0, 0, 0, 0);
    cursor: pointer
}

.watch-video-btn-a,
.watch-video-btn-a .watch-video-btn-a-text,
.watch-video-btn a {
    display: block;
    text-decoration: none;
    text-align: left;
    padding-left: 10px;
}

.watch-video-btn-a:hover {
    text-decoration: none;
}

/**基本**/
.watch-video-btn::before,
.watch-video-btn::after {
    position: absolute;
    z-index: -1;
    display: block;
    content: '';
}

.watch-video-btn.top-watch::before,
.watch-video-btn.top-watch::after {
    display: none
}

/**基本**/
.watch-video-btn,
.watch-video-btn::before,
.watch-video-btn::after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-transition: all .4s cubic-bezier(.47, .12, .11, .99);
    transition: all .4s cubic-bezier(.47, .12, .11, .99);
}

.watch-video-btn {
    position: relative;
    z-index: 2;
    color: #282828;
    overflow: hidden;
    text-align: center;
}

.watch-video-btn:hover {
    color: #fff;
}

.watch-video-btn::after {
    top: -100%;
    width: 100%;
    height: 100%;
}

.watch-video-btn::after {
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
}

.watch-video-btn:hover::after {
    left: 0;
    background-color: #737373;
}

.watch-video-btn {
    position: relative;
    display: inline-block;
}

.watch-video-btn.top-watch a {
    position: absolute;
    z-index: 1;
    bottom: -80px;
    left: 50%;
    width: 1024px;
    height: 160px;
    margin-left: -512px;
    cursor: pointer;
    -webkit-transition: background-color .4s cubic-bezier(.47, .12, .11, .99);
    transition: background-color .4s cubic-bezier(.47, .12, .11, .99);
    background: rgba(98, 98, 98, .75);
}

.watch-video-btn.top-watch a:before {
    position: absolute;
    top: 5px;
    left: 5px;
    width: calc(100% - 10px);
    height: calc(100% - 10px);
    content: '';
    -webkit-transition: all .4s cubic-bezier(.47, .12, .11, .99);
    transition: all .4s cubic-bezier(.47, .12, .11, .99);
    background: #626262;
}

.watch-video-btn.top-watch a span {
    font-size: 2.4rem;
    font-weight: bold;
    line-height: 1;
    position: absolute;
    top: 50%;
    left: 50%;
    display: block;
    display: inline-block;
    -webkit-box-sizing: content-box;
    box-sizing: content-box;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    -webkit-transform-origin: top left;
    -ms-transform-origin: top left;
    transform-origin: top left;
    text-align: left;
    letter-spacing: .1em;
    color: #fff;
}

.watch-video-btn.top-watch a span:after {
    position: absolute;
    top: -8px;
    right: -60px;
    width: 40px;
    height: 40px;
    content: '';
    background: url(../../image/i_play.svg) no-repeat center;
    background-size: 100% auto;
}

.watch-video-btn.top-watch a:after {
    display: none;
}

.watch-video-btn.top-watch {
    width: 100%;
    margin-left: 0;
    border: 0;
    overflow: unset;
    margin-top: 8%;
    height: 160px;
    margin-top: 1%;
}

.watch-video-btn.top-watch a:hover:before {
    /*top: 15px;
    left: 15px;
    width: calc(100% - 30px);
    height: calc(100% - 30px);*/
    transform: scale(0.99, 0.96);
}

.watch-video-btn a,
.watch-video-btn-a .watch-video-btn-a-text {
    text-decoration: none;
}

.watch-video-btn:hover a,
.watch-video-btn:hover a:after,
.watch-video-btn-a:hover .watch-video-btn-a-text,
.watch-video-btn-a:hover .watch-video-btn-a-text:after {
    color: #fff;
    transition: 0.3s;
}

.watch-video-btn a:hover {
    color: #fff;
}

/* .watch-video-btn-a .watch-video-btn-a-text:before,
.watch-video-btn a:before {
    display: none;
    content:"";
    position: absolute;
    right: 14.8px;
    top: 52%;
    width: 50px;
    height: 1px;
    background: #737373;
    display: inline-block;
} */
.watch-video-btn-a .watch-video-btn-a-text:after,
.watch-video-btn a:after {
    position: absolute;
    z-index: 1;
    top: 50%;
    right: 15px;

    width: 32px;
    height: 9px;

    content: '';
    -webkit-transition: right .5s cubic-bezier(.47, .12, .11, .99);
    transition: right .5s cubic-bezier(.47, .12, .11, .99);
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);

    background: url('../image/i_ar.svg') no-repeat center right;
    background-size: 100% auto;
    /*     position: absolute;
    top: 42%;
    right: 15px;
    width: 10px;
    height: 10px;
    content: '';
    border-top: 1px solid #282828;
    border-right: 1px solid #282828;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg); */
}

.watch-video-btn a:hover:before,
.watch-video-btn-a:hover .watch-video-btn-a-text:before {
    /* background: #fff; */
    /*     right: 10px;
    background: url('../image/i_ar_btn_bk_on.svg') no-repeat right center;
    background-size: auto 100%; */
}

.watch-video-btn a:hover:after,
.watch-video-btn-a:hover .watch-video-btn-a-text:after {
    /*     border-top: 1px solid #fff;
    border-right: 1px solid #fff; */
    right: 10px;
    background: url('../image/i_ar_btn_bk_on.svg') no-repeat right center;
    background-size: auto 100%;
}

@media screen and (max-width:640px) {
    .watch-video-btn:hover {
        color: #262626;
    }

    .watch-video-btn:hover a,
    .watch-video-btn:hover a:after,
    .watch-video-btn-a:hover .watch-video-btn-a-text,
    .watch-video-btn-a:hover .watch-video-btn-a-text:after {
        color: #262626;
    }

    .watch-video-btn::after {
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
    }

    .watch-video-btn:hover::after {
        top: 0;
        background-color: #737373;
    }

    .watch-video-btn a:hover:after,
    .watch-video-btn-a:hover .watch-video-btn-a-text:after {
        right: 15px;
        background: url('../image/i_ar.svg') no-repeat center right;
        background-size: 100% auto;
    }
}

@-webkit-keyframes scrollLine {

    0%,
    to {
        transform: translateY(0)
    }

    50% {
        transform: translateY(100%)
    }

    50.1% {
        transform: translateY(-100%)
    }
}

@keyframes scrollLine {

    0%,
    to {
        transform: translateY(0)
    }

    50% {
        transform: translateY(100%)
    }

    50.1% {
        transform: translateY(-100%)
    }
}

.toscroll {
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    font-size: 1.2vw;
    text-transform: uppercase;
    text-align: center;
}

.toscroll span {
    overflow: hidden;
    display: block;
    position: relative;
    margin: 8px auto 0;
    width: 1px;
    height: 1.4vw
}

.toscroll span:before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    -webkit-animation: scrollLine 2s cubic-bezier(.165, .84, .44, 1) infinite;
    animation: scrollLine 2s cubic-bezier(.165, .84, .44, 1) infinite
}

.toscroll.color-white {
    color: #fff
}

.toscroll.color-white span:before {
    background-color: #fff
}

.toscroll.color-black {
    color: #272727
}

.toscroll.color-black span:before {
    background-color: #272727
}

.toscroll.color-blue {
    color: #22439c
}

.toscroll.color-blue span:before {
    background-color: #22439c
}

.kv {
    background-image: url('/upload/webpage/3dspace/mv.jpg');
    padding-bottom: 40%;
    position: relative;
    background-size: cover;
    background-position: center;
}

.kv .title,
.kv .txt {
    text-shadow: 0px 0px 0px #000, 0px 0px 0px #000, 2px 2px 4px #000, 0px 0px 0px #000;
}

.kv .title {
    font-size: 3.2vw;
    transform: translate(-50%, -40%);
    position: absolute;
    top: 55%;
    left: 50%;
    color: #fff;
    text-align: center;
    width: 100%;
}

.kv .txt {
    font-size: 1.5vw;
    transform: translate(-50%, 4%);
    position: absolute;
    top: 50%;
    line-height: 1.8;
    left: 50%;
    color: #fff;
    text-align: center;
    width: 100%;
}

.pc-image {
    display: block;
}

.sp-image {
    display: none;
}

.catalog-item {
    padding-top: 3rem;
}

.catalog-item:nth-child(even) {
    background-color: #fff;
}

.catalog-item:nth-child(odd) {
    background-color: #f3f4f8;
}

.list-title {
    margin-bottom: 2rem;
    font-weight: bolder;
    font-size: 160%;
    text-align: center;
    width: 1024px;
    margin-left: auto;
    margin-right: auto;
}

.list {
    display: flex;
    flex-direction: row;
    align-content: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    width: 1024px;
    margin-left: auto;
    margin-right: auto;
}

.list .item {
    width: 48%;
    margin-bottom: 3rem;
    font-size: 16px;
}

.list .item .item-title {
    font-size: 100%;
    margin: 1rem 0;
    display: flex;
    font-weight: bolder;
    margin-bottom: 0.5rem;
    flex-direction: row;
    flex-wrap: nowrap;
    align-content: center;
    justify-content: flex-start;
    align-items: center;
}

.list .item .item-title .sub-item-title {
    color: #3252a3;
}

.list .item .sub-item-title {
    margin-left: 1rem;
}

.list .item .item-link {
    border: 1px black solid;
    padding: 0.2rem 0 0.3rem 1rem;
    width: 11rem;
    margin-top: 1rem;
    display: inline-block;
}

.list .item .text {
    font-size: 90%;
}

.list .item .new {
    font-weight: bolder;
    color: red;
    color: #DD0000;
    margin-left: auto;
    margin-right: 1rem;
    display: inline-block;
}

.list .item .watch-video-btn {
    z-index: 10;
}

.list .item .watch-video-btn .watch-video-btn-a-text {
    padding: 0;
}