body {
    margin: 0;
    font-family: Georgia, serif;
    background: #f7fafc;
    color: #111;
}

.page-title {
    text-align: center;
    margin: 40px 0 30px;
    font-size: 2.2rem;
}

/* Main container */
.conference-container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px 60px;
}

/* Each conference block */
.conference-item {
    margin-bottom: 60px;
    text-align: center;
}

/* Photos row */
.conf-photos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 250px));
    justify-content: center;
    gap: 18px;
    margin-bottom: 18px;
}

/* SAME SIZE AS GALLERY */
.conf-photos img {
    width: 250px;
    height: 250px;
    object-fit: cover;
    border-radius: 10px;
    filter: grayscale(100%);
    cursor: pointer;
    transition: all 0.3s ease;
}

.conf-photos img:hover {
    filter: grayscale(0%);
    transform: scale(1.03);
}

/* Text below photos */
.conf-text {
    max-width: 750px;
    margin: auto;
}

.conf-text h3 {
    margin: 10px 0 8px;
    font-size: 1.3rem;
}

.conf-text p {
    margin: 6px 0;
    line-height: 1.6;
}

.conf-meta {
    font-size: 0.9rem;
    color: #555;
}

/* LIGHTBOX (same as gallery) */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.9);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
}

.lightbox .close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
}

.papers {
    text-decoration: none;
    color: #000;
}