/*科研绘图css*/

#app header .nav_url li:nth-child(5) a {
    color: #ffc603 !important;
}


body {
    min-height: 100vh;
    background-color: RGBA(242, 245, 244, 1);
}

.banner_one > div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start !important;
}

.banner_one_box {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: max-content;
}

.banner_one_box > h2 {
    font-size: 80px;
    font-weight: bold;
    color: #FFFFFF;
    text-shadow: 2px 2px 5px rgba(6, 0, 1, 0.7);
}

.banner_one_box > p {
    font-size: 30px;
    font-weight: 400;
    color: rgba(255, 255, 255, .9);
    text-shadow: 1px 1px 3px rgba(6, 0, 1, 0.7);
    margin-top: 57px;
}

.banner_one_box > div {
    width: 250px;
    height: 69px;
    display: flex;
    align-items: center;
    margin-top: 84px;
    background: url("../images/research/banner_btn_bj.png") no-repeat;
    background-size: 100% 100%;
    cursor: pointer;
    font-size: 30px;
    font-weight: 400;
    color: #000000;
    padding-left: 35px;
}

.content {
    padding-top: 39px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-bottom: 158px;
}

.content_box {
    width: 1200px;
    display: flex;
    flex-direction: column;
}

.content_box > div {
    display: flex;
    flex-direction: column;
}

.content_box > div:nth-child(n+2) {
    margin-top: 86px;
}

.content_box > div > h2 {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    font-weight: 500;
    color: #0046af;
    text-shadow: 0px 1px 0px #c0c0c0,
    0px 2px 0px #b0b0b0,
    0px 3px 0px #a0a0a0,
    0px 4px 0px #909090,
    0px 5px 10px rgba(0, 0, 0, 0.6);
}

.content_box ul {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    margin-top: 31px;
}

.periodical {
    margin-left: -20px;
}

.periodical > li {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 224px;
    margin-left: 20px;
    background: #FFFFFF;
    box-shadow: 0 0 10px #0046af;
}

.periodical > li:nth-child(n+6) {
    margin-top: 50px;
}

.periodical > li:hover {
    transform: scale(1.1);
    transition: all .5s;
}

.periodical > li > img {
    width: 224px;
    height: 294px;
}

.periodical > li > p {
    width: 224px;
    height: 41px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

.periodical > li > p > strong {
    font-size: 18px;
    font-family: Times New Roman;
    font-weight: 400;
    color: #000000;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
}

.paper {
    margin-left: -20px;
}

.paper > li {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #FFFFFF;
    width: 285px;
    margin-left: 20px;
    box-shadow: 0 0 10px #0046af;

}

.paper > li:hover {
    transform: scale(1.1);
    transition: all .5s;
}

.paper > li > img {
    width: 285px;
    height: 214px;
    display: block;
}

.paper > li > p {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    height: 42px;
}

.paper > li:nth-child(n+5) {
    margin-top: 50px;
}

.paper > li > p > strong {
    font-size: 18px;
    font-family: Times New Roman;
    font-weight: 400;
    color: #000000;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
}

.theory {
    margin-left: -19px;
}

.theory > li {
    box-shadow: 0 0 14px rgba(0, 0, 0, 0.4);
    width: 387px;
    background: #FFFFFF;
    cursor: pointer;
    margin-left: 19px;

}

.theory > li:nth-child(n+4) {
    margin-top: 21px;
}

.theory > li > div {
    width: 387px;
    height: 289px;
    position: relative;
}

.theory_img {
    width: 100%;
    height: 100%;
    display: block;
}

.play {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    background: url("../images/research/play.png") no-repeat center;
}

.theory > li p {
    width: 387px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

.theory > li > p > strong {
    font-size: 18px;
    font-family: Times New Roman;
    font-weight: 400;
    color: #000000;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
}

.btn {
    margin: 54px auto 0;
    width: 116px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 400;
    color: #FFFFFF;
    background: rgba(0, 70, 175, 1);
}

.fixed_video {
    display: none;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, .5);
}

.fixed_video > div {
    width: 800px;
    height: 500px;
}

.fixed_video > div > video {
    width: 800px;
    height: 500px;
}