.paper-section {
    margin-top: 35px;
    text-align: center;
}

.paper-link {
    display: inline-block;
    padding: 9px 17px;
    border-radius: 6px;
    background: #2a7ae2;
    color: #fff;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.paper-link:hover {
    background: #1e5bb8;
    transform: translateY(-1px);
}

.publication-reference {
    text-align: left;
}