/* 自定义右侧目录 */
.catalogue {
    display: block;
    overflow: hidden;
    position: fixed;
    right: 15px;
    top: 100px;
    padding: 30px 35px 10px 15px;
    background: white;
    color: rgb(102, 102, 102);
    border: 1px solid rgb(221, 221, 221);
    border-radius: 4px;
    line-height: 42px;
    font-size: 16px;
    text-align: center;
    box-shadow: rgb(238 238 238) 0px 0px 6px;
}

.catalogue-close {
    position: absolute;
    right: 12px;
    top: 10px;
    cursor: pointer;
    line-height: 15px;
}

.catalogue-h2 {
    display: block;
    text-decoration: none;
    color: #505d6b;
    margin-left: 0px;
    font-size: 14px;
    line-height: 25px;
    text-align: left;
}

.catalogue-h3 {
    display: block;
    text-decoration: none;
    color: #505d6b;
    margin-left: 20px;
    font-size: 14px;
    line-height: 25px;
    text-align: left;
}

/* 首页按钮 */
section.cover .cover-main>p:last-child a {
    border-radius: 0.5rem !important;
}

.sidebar {
    width: 280px !important;
}
.sidebar>h1 {
    font-size: 2rem !important;
    padding-left: 30px ;
    text-align: left !important;
}


.sidebar .sidebar-nav>ul {
    padding-left: 30px
}

.sidebar .sidebar-nav ul>li.folder {
    position: relative;
}

.sidebar .sidebar-nav ul>li.folder::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 8px solid #000;
    transition: transform 0.5s;
    position: absolute;
    left: -16px;
    top: 10px;
}

.sidebar .sidebar-nav ul>li.folder.open::before {
    transform: rotate(90deg);
}