/* 页面大容器 */
.page-container {
    width: 100%;
}
.page-container .content-wrap {
    max-width: 136rem;
    margin: 0 auto;
    display: flex;
    gap: 4rem;
    align-items: flex-start;
    margin-bottom: 10rem;
}

.page-container .content-wrap .sidebar {
    width: 28.6rem;
    flex-shrink: 0;
    background: #FFFFFF;
    position: relative;
    /* min-height: 60rem; */
    z-index: 99;
    margin-top: -2rem;
    
}

.page-container .sidebar .sidebar-header {
    background: url(../images/Slice8.png) no-repeat center;
    background-color: #043584;
    color: #fff;
    padding: 25px;
    background-size: auto 100%;
    background-position-x: left;
}
.page-container .sidebar .sidebar-header::after {
    content: '';
    position: absolute;
    top: 0;
    right: -3.7rem;
    width: 0;
    height: 0;
    border-top: 2rem solid transparent;
    border-bottom: 0 solid transparent;
    border-right: 2rem solid transparent;
    border-left: 1.7rem solid #071835;
    z-index: -1;
}
.page-container .sidebar .sidebar-header h2 {
    font-size: 36px;
    text-align: center;
}
.page-container .sidebar .sidebar-nav {
    margin-top: 3rem;
}
.page-container .sidebar .sidebar-nav .nav-item {
    display: block;
    padding: 2rem;
    font-size: 18px;
    color: #333;
    border-bottom: 0.1rem dotted #ccc;
    transition: all 0.3s ease-in-out;
    transform: translateX(0);
}
.page-container .sidebar .sidebar-nav .nav-item:hover,.page-container .sidebar .sidebar-nav .nav-item-active{
    background: rgba(117, 117, 117, .1);
    /* transform: translateX(1rem); */
    color: var(--bjtu-blue);
}

.page-container .sidebar .sidebar-decoration {
    /* position: absolute;
    bottom: 2rem;
    right: 1rem; */
    opacity: 0.2; 
    width: 139px;
    margin: 7rem 1rem 2rem;
    float: right;
}

/* --- 右侧内容区样式 --- */
.page-container .content-wrap .main-content {
    flex-grow: 1;
    margin-top: 6rem;
}

.page-container .content-wrap .main-content .breadcrumb {
    display: flex;
    justify-content: space-between;
    margin-bottom: 3rem;
    padding-bottom: 0.5rem;
    border-bottom: 0.1rem solid #D4D4D4 ;
}
.page-container .content-wrap .main-content .breadcrumb .breadcrumb-train{
    display: inline-block;
    width: 2rem;
}
.page-container .content-wrap .main-content .breadcrumb .breadcrumb-icon {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}
.page-container .content-wrap .main-content .breadcrumb a {
    color: #666;
}
.page-container .content-wrap .main-content .article {
    padding: 0 2rem;
}

.page-container .content-wrap .main-content .article-title {
    font-size: 3.2rem;
color: #000000;
    text-align: center;
    margin-bottom: 4rem;
}

.page-container .content-wrap .main-content .article-body p {
    font-size: 1.4rem;
color: #313131;
    line-height: 1.8;
    margin-bottom: 2rem;
    text-align: justify; 
}