/* Make top-level sidebar items bold */
.book-summary > nav > ul > li > span {
    font-weight: bold;
}

/* Optionally, adjust sub-item styling if needed */
.book-summary ul ul li a {
    font-weight: normal;
}


.custom-logo-container {
    text-align: center;
    margin-top: 10px;
    margin-bottom: 10px;
}

.custom-logo-container img {
    max-width: 150px;
    height: auto;
}