.video-tutorials {
    background-color: #F6F6F6;
    background-image: url(../images/jiaocheng-bg.png);
    background-size: contain;
    background-repeat: no-repeat;
    padding-bottom: 80px;
}

.video-container {
    margin: 0 auto;
    max-width: 1200px;
    box-sizing: border-box;
}

.video-tutorials-content {
    width: 100%;
    padding-top: 60px;
}

.video-tutorials-content h2 {
    color: #1d2129;
    font-size: 32px;
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    text-align: center;
}

.switch-btns{
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px 0 70px;
}

.switch-btns>a{
    display: flex;
    align-items: center;
    color: #1D2129;
    font-size: 16px;
    font-style: normal;
    font-weight: 500;
    padding: 12px;
    cursor: pointer;
}

.switch-btns>a>img{
    margin-right: 8px;
    filter: grayscale(100%);
}

.switch-btns>a.current{
    position: relative;
    color: #165DFF;
}

.switch-btns>a.current::after{
    position: absolute;
    content: "";
    width: 100%;
    height: 2px;
    background-color: #165DFF;
    left: 0;
    bottom: 0;
}

.switch-btns>a.current>img{
    filter: grayscale(0);
}

.switch-btns>a:first-child{
    margin-right: 40px;
}

.tutorial-type-list {
    width: 100%;
}

.tutorial-item {
    width: 100%;
}

.QA-content-list {
    width: 100%;
}

.QA-content-list>li {
    width: 100%;
    box-sizing: border-box;
    padding: 25px 40px;
    border-radius: 5px;
    background: url(../images/right.svg) no-repeat 97% 20px;
    background-color: #fff;
    margin-bottom: 12px;
}

.QA-content-list>li>h3 {
    display: flex;
    align-items: center;
    color: #000;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 16px;
}

.QA-content-list>li>h3>span {
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 8px 0px;
    background: linear-gradient(180deg, #D7CDFB 0%, #B9DEFC 100%);
    margin-right: 12px;
}

.QA-content-list>li>p {
    color: #4E5969;
    font-size: 14px;
    font-weight: 400;
    line-height: 24px;
    border-top: 1px dashed #D0D1E6;
    padding-top: 16px;
}


.video-tutorials-list {
    display: flex;
    flex-wrap: wrap;
}

.video-tutorials-list>li {
    width: 24%;
    box-sizing: border-box;
    padding: 32px 25px;
    margin-bottom: 23px;
    border-radius: 10px;
    flex-direction: column;
    overflow: hidden;
    cursor: pointer;
    display: flex;
    justify-content: space-around;
    margin-right: 1.333333%;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    background-color: #1d2129;
    color: #fff;
    height: 160px;
    position: relative;
}

.video-tutorials-list>li .right-top-ico {
    position: absolute;
    top: 0;
    right: 0;
    width: 52px;
    height: auto;
}

.video-tutorials-list>li.unrecorded:hover {
    cursor: not-allowed;
    /* 改变光标样式为不可用状态 */
}

.video-tutorials-list>li>.unrecorded-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 2555, 255, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-tutorials-list>li>.unrecorded-layer p {
    color: #FFF;
    font-size: 16px;
    font-style: normal;
    font-weight: 500;
    background-color: #fff;
    border-radius: 21px;
    background: rgba(29, 33, 41, 0.50);
    padding: 7px 28px;
}


.video-tutorials-list>li:first-child {
    background-image: url(../images/video-01.png);
}

.video-tutorials-list>li:nth-child(2) {
    background-image: url(../images/video-02.png);
}

.video-tutorials-list>li:nth-child(3) {
    background-image: url(../images/video-03.png);
}

.video-tutorials-list>li:nth-child(4) {
    background-image: url(../images/video-04.png);
}

.video-tutorials-list>li:nth-child(5) {
    background-image: url(../images/video-05.png);
}

.video-tutorials-list>li:nth-child(6) {
    background-image: url(../images/video-06.png);
}

.video-tutorials-list>li:nth-child(7) {
    background-image: url(../images/video-07.png);
}

.video-tutorials-list>li:nth-child(8) {
    background-image: url(../images/video-08.png);
}

.video-tutorials-list>li:nth-child(9) {
    background-image: url(../images/video-09.png);
}

.video-tutorials-list>li:nth-child(10) {
    background-image: url(../images/video-10.png);
}

.video-tutorials-list>li:nth-child(11) {
    background-image: url(../images/video-11.png);
}

.video-tutorials-list>li:nth-child(12) {
    background-image: url(../images/video-12.png);
}

.video-tutorials-list>li:nth-child(13) {
    background-image: url(../images/video-13.png);
}

.video-tutorials-list>li:nth-child(14) {
    background-image: url(../images/video-14.png);
}

.video-tutorials-list>li:nth-child(15) {
    background-image: url(../images/video-15.png);
}

.video-tutorials-list>li:nth-child(16) {
    background-image: url(../images/video-16.png);
}

.video-tutorials-list>li:nth-child(17) {
    background-image: url(../images/video-17.png);
}

.video-tutorials-list>li:nth-child(18) {
    background-image: url(../images/video-18.png);
}

.video-tutorials-list>li:nth-child(19) {
    background-image: url(../images/video-19.png);
}

.video-tutorials-list>li:nth-child(20) {
    background-image: url(../images/video-20.png);
}

.video-tutorials-list>li:nth-child(21) {
    background-image: url(../images/video-21.png);
}

.video-tutorials-list>li:nth-child(22) {
    background-image: url(../images/video-22.png);
}

.video-tutorials-list>li:nth-child(23) {
    background-image: url(../images/video-23.png);
}

.video-tutorials-list>li:nth-child(24) {
    background-image: url(../images/video-24.png);
}

.video-tutorials-list>li:nth-child(25) {
    background-image: url(../images/video-25.png);
}

.video-tutorials-list>li:nth-child(26) {
    background-image: url(../images/video-26.png);
}

.video-tutorials-list>li:nth-child(27) {
    background-image: url(../images/video-27.png);
}

.video-tutorials-list>li:nth-child(28) {
    background-image: url(../images/video-28.png);
}

.video-tutorials-list>li:nth-child(29) {
    background-image: url(../images/video-29.png);
}

.video-tutorials-list>li:nth-child(30) {
    background-image: url(../images/video-29.png);
}

.video-tutorials-list>li:last-child {
    background-image: url(../images/video-30.png);
}

.video-tutorials-list>li:nth-child(4n) {
    margin-right: 0;
}

.video-tutorials-list>li>h4 {
    color: #fff;
    font-size: 12px;
    font-style: normal;
    font-weight: 400;
    line-height: 24px;
    /* 200% */
}

.video-tutorials-list>li>h3 {
    color: #fff;
    font-feature-settings: "clig" off, "liga" off;
    text-shadow: 0px 2px 6px rgba(7, 16, 67, 0.28);
    font-family: "PingFang SC";
    font-size: 16px;
    font-style: normal;
    font-weight: 700;
    line-height: 24px;
    /* 150% */
    margin-bottom: 10px;
}

.video-tutorials-list>li>img {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
}

.video-layer {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: none;
    justify-content: center;
    align-items: center;
}

.video-content {
    width: 880px;
    height: 500px;
    flex-shrink: 0;
    position: relative;
}

.video-content .video-close>img {
    width: 36px;
    height: 36px;
    position: absolute;
    top: -25px;
    right: -25px;
    z-index: 2001;
    cursor: pointer;
    transition: transform 0.5s ease;
}

.video-content .video-close>img:hover {
    transform: rotate(180deg);
}

@media screen and (max-width: 1024px) {
    .video-container {
        padding: 0 1rem;

    }

    .QA-content-list>li {
        padding: 1rem;
    }


    .video-content {
        width: 80%;
    }

    .video-tutorials-list>li>.unrecorded-layer p {
        font-size: .9rem;
        padding: 5px 10px;
    }

    .video-tutorials-list>li .right-top-ico {
        width: 2.5rem;
    }

}

@media screen and (max-width: 480px) {
    .video-container {
        padding: 0 1rem;

    }

    .QA-content-list>li>h3 {
        font-size: 1rem;
    }


    .video-content {
        width: 90%;
    }

    .video-tutorials-list>li>.unrecorded-layer p {
        font-size: .9rem;
        padding: 5px 10px;
    }

    .video-tutorials-list {
        justify-content: space-between;
    }

    .video-tutorials-list>li {
        width: 48%;
        height: auto;
        margin-right: 0;
        padding: 1rem;
    }

    .video-content .video-close>img {
        width: 2rem;
        height: 2rem;
        top: -1rem;
        right: -1rem;
    }

}