.toc-nav { max-height: calc(100vh - 6rem); overflow-y: auto; }
.toc-titulo { 
    margin-top: 3rem;
    font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: #9aa0a6; margin-bottom: .6rem; }
.toc-nav .nav-link { color: #495057; padding: .3rem 0 .3rem .75rem; font-size: .875rem; border-left: 2px solid #e9ecef; line-height: 1.3; }
.toc-nav .nav-link.active { color: #0d3b66; font-weight: 600; border-left-color: #0d3b66; background: transparent; }
.toc-nav .nav-link:hover { color: #0d3b66; }