.main-title {
    text-align: center;
    font-weight: bold;
    font-size: 3.0em;
}

.datetime {
    text-align: center;
    font-style: italic;
    font-weight: bold;
    font-size: 1.4em;
}

.abstract {
    text-align: center;
    font-style: italic;
}

.person-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin: 20px 0;
    flex-wrap: wrap;
    justify-content: center;
}

.person-photo {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
}

.person-info {
    flex: 1;
    min-width: 200px;
}

.person-name {
    font-size: 1.4em;
    font-weight: bold;
}

.person-affiliation {
    font-size: 1.1em;
    color: #555;
    margin: 5px 0;
}

.person-description {
    font-size: 1em;
    line-height: 1.4;
}

/* Responsive: stack on small screens */
@media (max-width: 600px) {
    .person-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}