.toc-container {
    padding: 20px;
    background: #fcfcfc;
    border-radius: 4px;
}
.toc-title {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.2em;
    font-weight: 600;
}
.toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.toc-list li {
    padding-left: 15px;
    border-left: 2px solid #ddd;
    transition: all 0.3s ease;
}
.toc-list li:last-child {
    margin-bottom: 0 !important;
}
.toc-list li a {
    text-decoration: none;
    color: #555;
    display: block;
    transition: color 0.3s ease;
}
.toc-list li a:hover {
    color: #000;
}
.toc-list li.active {
    border-left-color: #d4af37; /* Default active border */
}
.toc-list li.active a {
    color: #333;
    font-weight: 500;
}