/* 隐藏左侧导航栏的滚动条，但保持滚动功能 */
.bd-sidebar {
    overflow-y: auto;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* Internet Explorer 10+ */
}

.bd-sidebar::-webkit-scrollbar {
    display: none; /* WebKit */
}

/* 鼠标悬停时显示滚动条 */
.bd-sidebar:hover {
    scrollbar-width: thin; /* Firefox */
    -ms-overflow-style: auto; /* Internet Explorer 10+ */
}

.bd-sidebar:hover::-webkit-scrollbar {
    display: block; /* WebKit */
    width: 6px;
}

.bd-sidebar:hover::-webkit-scrollbar-track {
    background: transparent;
}

.bd-sidebar:hover::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 3px;
}

.bd-sidebar:hover::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.5);
}

/* 优化导航栏的整体样式 */
.bd-sidebar-primary {
    max-height: calc(100vh - 4rem);
}

.bd-sidebar .bd-toc {
    max-height: calc(100vh - 8rem);
}