/* 主区域开始 */
.main {
    padding: 70px 0;
    width: 100%;
}

/* 目录 */
.main .catalog {
    position: fixed;
    top: 120px;
    z-index: 99;
    opacity: 0;
    transition: all 0.5s;
    width: 250px;
}

.main .catalog.oth{
    top: 140px;
}

.main .catalog .catalog-list {
    color: #63449182;
    line-height: 1.3;
    box-sizing: border-box;
    font-family: 'Aileron1';
}

.main .catalog .catalog-list .cata {
    position: relative;
}

.main .catalog .catalog-list .cata .cata-a::before {
    position: absolute;
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #63449182;
    left: 1px;
    top: 6px;
    transition: all 0.4s;
}

.main .catalog .catalog-list .cata .active::after {
    position: absolute;
    content: "";
    width: 25px;
    height: 25px;
    background: url("https://static.igem.wiki/teams/5304/catalogimg.webp") no-repeat;
    background-size: contain;
    left: -10px;
    top: -3px;
}

.main .catalog .catalog-list .cata .cata-a.active::before {
    opacity: 0;
}

.main .catalog-list .cata .cata-a {
    display: block;
    width: 90%;
    margin: 10px auto;
    margin-left: 10px;
    padding-left: 7%;
    transition: 0.2s;
    font-size: 20px;
}

.main .catalog-list .cata .cata-a:hover,
.main .catalog-list .cata .cata-a.active {
    color: #613795;
    transition: all 0.4s;
}

.main .catalog.result .catalog-list .cata .cata-a{
    font-size: 14px;
}

.main .catalog.result .cata-head{
    font-size: 17px;
}

.main .catalog .cata-head {
    margin-top: 10px;
    font-size: 20px;
    color: #342762;
    margin-left: -5px;
}

.catalog.judging .co1 .cata-a{
    color: #f9cd66d7;
}
.catalog.judging .co2 .cata-a{
    color: #b8b8b893;
}
.catalog.judging .co3 .cata-a{
    color: #ab7747;
}

.main .catalog .cata-head.refer {
    color: #613795;
}

.main .catalog .sub-cata .cata .cata-a {
    font-size: 0;
    opacity: 0;
    transition: all 0.5s;
    margin: 0;
}

.main .catalog.result .sub-cata .cata .cata-a{
    font-size: 0;
}

.main .catalog .sub-cata.showsub .cata-a,
.main .catalog .sub-cata.show-sub .cata-a {
    font-size: 17px;
    opacity: 1;
    margin: 10px auto;
}

.main .catalog.result .sub-cata.showsub .cata-a,
.main .catalog.result .sub-cata.show-sub .cata-a{
    font-size: 13px;
}

.main .catalog.edu-cata .sub-cata.showsub .cata-a{
    font-size: 13px;
    opacity: 1;
    margin: 3px auto;
}

/* 内容 */
.main .main-content {
    width: 55%;
    box-sizing: border-box;
    border-radius: 30px;
    padding: 20px 55px;
    position: relative;
    box-shadow: rgb(227 218 243) 2px 2px 10px 10px;
    background-color: #eff0f7;
}

.main .main-content .content {
    box-sizing: border-box;
    width: 100%;
    padding: 4px;
    line-height: 2;
    text-align: justify;
}

.main .main-content .content-head {
    font-size: 33px;
    line-height: 1.4;
}

.main .intro,
.main .lit-head {
    margin: 12px 0;
}

.main .m-img {
    width: 80%;
    margin: 30px auto;
    text-align: center;
}

.main .m-img img:hover {
    box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.6);
    transform: translateY(-5px);
}

.main .m-img img {
    width: 100%;
    height: 80%;
    cursor: pointer;
    transition: transform .5s;
    display: block;
}

.main .content.refer {
    box-shadow: rgb(227 218 243) 2px 2px 5px 0px;
    margin: 20px 0;
    border-radius: 30px;
}

.main .content.refer .dark{
    color: #777474;
}

.main .main-content .word-img {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    width: 90%;
    gap: 5%;
}

.main .main-content .word-img .si-img {
    width: 40%;
}

.main .main-content .word-img .si-img img {
    width: 100%;
    display: block;
}

.main .main-content .word-img .si-word {
    width: 40%;
    font-size: 10px !important;
}

.main .main-content .content .s-card {
    width: 90%;
    margin: 15px auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.main .main-content .content .s-img {
    width: 120px;
    height: 160px;
    border-radius: 20px;
    perspective: 1000px;
    transform-style: preserve-3d;
    box-sizing: border-box;
    position: relative;
    margin: 2%;
}

.main .main-content .content .s-img .front,
.main .main-content .content .s-img .back {
    box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.3);
    width: 100%;
    height: 100%;
    border-radius: 20px;
    backface-visibility: hidden;
    transition: transform 0.8s;
    position: absolute;
    top: 0;
    left: 0;
    cursor: pointer;
}

.main .main-content .content .s-img .front img,
.main .main-content .content .s-img .back img {
    width: 100%;
    height: 100%;
    border-radius: 20px;
    display: block;
}

.main .main-content .content .s-img .back {
    transform: rotateY(180deg);
}

.main .main-content .content .s-img:hover .front {
    transform: rotateY(-180deg);
}

.main .main-content .content .s-img:hover .back {
    transform: rotateY(0);
}

/* 移动端 */
@media (max-width: 1000px) {
    .main .catalog {
        display: none;
    }

    .main .main-content {
        width: 80%;
        margin: 0 auto;
        float: none;
    }
}

@media (max-width: 830px) {
    .main .main-content .content {
        padding: 30px 0;
    }

    .main h1 {
        font-size: 20px;
    }

    .main .lit-head {
        font-size: 17px;
    }

    .main .m-img {
        width: 80%;
    }
}

.main .border {
    box-sizing: border-box;
    border-radius: 15px;
    box-shadow: #BED7EE 2px 2px 10px 10px;
    background-color: #eff0f7;
}

.main .model {
    width: 65%;
    margin: 30px auto;
}

.main .model .h-n{
    line-height: 1.6;
    margin: 15px 0 30px 0;
}

.main .content1,
.main .content2 {
    padding: 55px;
    margin: 70px 0;
    position: relative;
}

.main .content2 .imgs {
    display: flex;
    flex-wrap: wrap;
}

.main .content2 .imgs .m-img {
    width: 45%;
}

.main .con {
    display: none;
}

.main .con.show {
    display: block;
}

.main .but-area {
    display: flex;
    flex-wrap: wrap;
    gap: 7%;
    margin: 55px auto 85px auto;
    justify-content: center;
}

.main .but-area .but {
    width: 200px;
    height: 55px;
    border-radius: 15px;
    cursor: pointer;
    transition: all .5s;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgb(249 242 255 / 32%);
    box-shadow: 3px 3px 10px rgb(0 0 0 / 22%);
    color: #342762ad;
}

.main .but-area .but1 {
    margin: 15px 0;
}

.main .but-area .but1,
.main .but-area .but3 {
    width: 240px;
    height: 70px;
}

.main .but-area .but2,
.main .but-area .but3 {
    margin: 10px 0;
}

.main .but-area .but:hover,
.main .but-area .but.but-active {
    transform: translateY(-3px);
    box-shadow: 0 8px 12px 0 rgb(0 0 0 / 37%);
    background: rgb(255 255 255 / 40%);
    color: #1e1348;
}

.main .content2 .label {
    position: absolute;
    width: 200px;
    padding: 15px;
    border-radius: 30px 30px 0 0;
    text-align: center;
    top: -56px;
    box-sizing: border-box;
    background-color: #eff0f7;
    box-shadow: #BED7EE 20px -20px 14px -18px;
    font-size: 26px;
}

.main-content.part {
    width: 80% !important;
    margin: 100px auto;
    padding: 55px;
}

.main-content.part h1 {
    margin: 50px;
}

.part-table {
    width: 95%;
    border-collapse: collapse;
    border: 1px solid #3f3a4533;
    margin: 20px auto;
}

.part-table th:nth-child(1),
.part-table td:nth-child(1) {
    width: 15%;
}

.part-table td:nth-child(1),
.part-table td:nth-child(2) {
    word-break: break-all;
}

.part-table th:nth-child(2),
.part-table td:nth-child(2) {
    width: 20%;
}

.part-table th:nth-child(3),
.part-table td:nth-child(3) {
    width: 16%;
}

.part-table th:nth-child(4),
.part-table td:nth-child(4) {
    width: 45%;
}

.part-table td:nth-child(4) {
    text-align: justify;
}

.part-table th {
    font-weight: bolder;
    color: #342762;
    font-size: 18px;
}

.part-table td {
    font-size: 16px;
    color: #652f47f5;
    line-height: 1.4;
}

.part-table th,
.part-table td {
    padding: 20px;
    border: 1px solid #3f3a4533;
    text-align: center;
    vertical-align: middle;
    box-sizing: border-box;
}

.part-table tr:nth-child(even) {
    background-color: #fff;
}

.main .imple{
    padding: 20px;
    border: 1px solid #7d7c7c;
    border-collapse: collapse;
}

/* 主区域结束 */