html, body {
    background-color: #f5f7fb;
}

.navbar-brand {
    letter-spacing: .2px;
}

.page-title {
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.company-card {
    transition: transform .15s ease, box-shadow .15s ease;
    cursor: pointer;
}

.company-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 .5rem 1.25rem rgba(0, 0, 0, .12);
}

.company-card .company-name {
    color: #0d6efd;
    text-decoration: none;
}

.company-card .company-name:hover {
    text-decoration: underline;
}

.tree {
    font-size: .95rem;
}

.tree ul {
    list-style: none;
    padding-left: 1rem;
    border-left: 1px dashed #dee2e6;
    margin-left: .45rem;
}

.tree > ul {
    border-left: none;
    padding-left: 0;
}

.tree .section-title {
    font-weight: 600;
    color: #2c3e50;
    padding: .3rem .4rem;
    display: block;
}

.tree .article-link {
    display: block;
    padding: .3rem .4rem;
    border-radius: .25rem;
    color: #495057;
    text-decoration: none;
}

.tree .article-link:hover {
    background-color: #e9ecef;
}

.tree .article-link.active {
    background-color: #0d6efd;
    color: #fff;
}

.article-content-card {
    background: #fff;
    border-radius: .75rem;
    box-shadow: 0 .1rem .75rem rgba(0, 0, 0, .05);
}