/* 本页头部标题高亮 */
body{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#container-h .nav .GetTop a {
    color: #fff;
    font-weight: 700;
}
/* 遮罩层 */
.cover{
    position: fixed;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-y: auto;
    width: 100%;
    height: 100%;
    top: 3rem;
    left: 0;
    background-color: rgba(18, 18, 18, 0.4);
    z-index: -1;
    opacity: 0;
    
}
/* 内容显示切换 */
.hide{
    z-index: 1; 
    opacity: 1;
}

/* 主题内容 */
.GetS {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 70%;
    
    
}

section .container {
    display: flex;
    flex-direction: column;
    align-items: center;    
    width: 100%;
    padding: 0 2rem;
    
}

section .container .nav-Get {
    display: flex;
    align-items: center;
    justify-content:space-between;
    width: 100%;
    height: 6rem;
    padding-bottom: 1.5rem;
    margin-top: 4rem;
    white-space: nowrap;
}

section .nav-Get ul {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    
    border-bottom: 2px solid rgba(0,0,0,0.3);
    
}

.nav-Get .li {
    position: relative;
    display: flex;
    display: inline-block;
    align-items: center;    
    font-family: "Roboto", sans-serif;
    font-weight: bold;
    cursor: pointer;
    font-size: 2.5rem;
    color: rgba(31, 41, 55, 0.3);
    padding: bottom 1.3rem; 
    margin: 0 10%;
    
}
/* 点击后样式标签 About Get 通用 */
.li.mark{
    color: #1F2937;
}

.li.mark::before {
    content: "";
    position: absolute;
    left: 0px; 
    bottom: -1.2rem; 
    transform: none; /* 取消居中的transform */
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-image: url('../images/about00.png');
    background-size: cover;
    background-position: center;
    z-index: -1;    
}

/* 页面隐藏 */
.none{
    display: none !important;
}

/* Teaching */

.teach{
    
    width: 100%;
    margin-bottom: 2rem;
    
    
}

.teach .teach-text{
    width: 100%;    
    font-family: "Roboto", sans-serif;
    font-weight: 400;
    font-size: 1.2rem;
    line-height: 1.5rem;
    color: #232536;
    margin-bottom: 2rem;
}

.teach .teach-btn0{
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 40%;
    height: 2.5rem;
    background-color: rgba(88, 45, 171, 1);
    border-radius: 0.7rem;
    padding: 1rem 1rem;
    margin-bottom: 3rem;
    cursor: pointer;
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: 500;
    font-size: 1.2rem;
    color: #FFFFFF;
}


.teach .teach-btn0 img{
    width: 1.3rem;
    height: 1.3rem;    
}


.teach .teach-list {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.3rem;
    
}

.teach .teach-list .teach-show {
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    margin-left: 0.3rem;    
    font-size:0
    
    
}

.teach-list .teach-img{
    
    overflow: hidden;
}
.teach-list .teach-img img {
    width: 100%;
    
}

.teach .teach-list .teach-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 1rem 0;
    background-color: #161616;
    cursor: pointer;
    
}

.teach-btn span{
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: 400;
    font-size: 1.3rem;
    color: #FFFFFF;
    text-align: center;
    margin-right: 8px;
}

.teach-btn i{
    width: 28px;
    height: 16px;
}

.teach-btn i img {
    width: 100%;
}
/* Teaching Open */

.teach-open {
    
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    width: 50%;    
    padding: 3rem 7rem ;    
    margin-top: 4rem;
    margin-bottom: 8rem;
    border-radius: 2rem;
    background-color: #fff;
   
    
}

.teach-open .teach-open-title {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-bottom: 1.2rem;
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: 500;
    font-size: 2.5rem;
    color: #121212;

    
}

.teach-open .teach-open-text {
    width: 100%;
    font-family: "Roboto", sans-serif;
    font-weight: 400;
    font-size: 1.1rem;
    color: #232536;
    text-align: left;
}

.teach-open .teach-open-text p {
    margin-bottom: 1.1rem;
}

.teach-open .teach-open-img {
    display: flex;
    align-self: flex-start;
    width: 100%;       
    margin-top: 1.2rem;
}

.teach-open .teach-open-img img{
    width: 95%;   
    height: 100%;
    margin-right:0.3rem ;
    
}

.has-img{
    height: 0 !important;
}

.teach-open .teach-open-del {
    position: absolute;
    right: 3rem;
    top: 3rem;
    width: 28px;
    height: 28px;
    cursor: pointer;
}

.teach-open .teach-open-del img {
    height: 100%;
       
}





/* BookDrives */

.book {
    width:100%;
    margin-bottom:3rem ;
}

.book .new-book0 {
    display: flex;    
    justify-content: space-between;
    width: 100%;
}

.book .new-book0 .img-book0 {
    width: 70%;
    
}

.book .new-book0 .img-book0 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book .new-book0 .text-book0 {
    width: 100%;    
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    margin-left: 1rem;
}

p {
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: 400;
    font-size: 1.1rem;
    color: #232536;
}

.book .Ad-book{
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
    text-align: center;
    width: 100%;    
    margin-top: 2rem;
    background-color: #FBF6EA;
}

.book .Ad-book h2 {
    
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: bold;
    font-size: 2.5rem;
    color: rgba(31, 41, 55, 1);
    margin-bottom: 1rem;
    margin-top: 2.5rem;
}



.book .teach-btn1{
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 37%;
    height: 2.5rem;
    background-color: rgba(88, 45, 171, 1);
    border-radius: 0.7rem;
    padding: 1rem 1rem;
    margin-bottom: 2rem;
    cursor: pointer;
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: 500;
    font-size: 1.2rem;
    color: #FFFFFF;
}

.book .teach-btn1 img{
    width: 1.3rem;
    height: 1.3rem;
    
}

.book hr {
    width: 100%;
    height: 0.4rem;
    background-color: #232536;
    margin: 1.7rem 0;
    border: none;
}

.Ad-book .Ad-text{
    display: flex;
    flex-direction: column;
    font-family: "Roboto", sans-serif;
    font-weight: 400;
    font-size: 1.1rem;
    color: #1E1B1B;
    margin-bottom: 1rem;
    
    
}

.new-book1 h3{
    font-family: "Source Han Sans SC", "Source Han Sans SC";
    font-weight: bold;
    font-size: 1.5rem;
    color: #121212; 
    margin: 1rem 0;   
}

.new-book1 .img-book1 {
    display: flex;
    justify-content: space-between;
    width: 100%;
        
}

.new-book1 .img-book11 img {
    width: 100%;
    margin-top: 1rem;
}

.new-book1 .img-book2{
    width: 100%;
    display: flex;
    justify-content: space-between;
}


.new-book1 .img-book2 img{
    width: 32%;    
    margin-top: 1rem;
}