.container {
    max-width: 1200px;
    padding: 20px;
}
.grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
}
@media (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(4, 1fr);
    }
}
.speaker-card {
    padding: 20px;
    text-align: center;
    background: #fff;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.speaker-card.hidden {
    display: none;
}
.speaker-card img {
  object-fit: cover;
  width: 100%;
  border-radius: 8px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: transform 0.3s;
}
.speaker-card h3 {
    margin: 0 0 10px;
    font-size: 1.2em;
}
.speaker-card .title {
    color: #555;
    margin-bottom: 10px;
}
.speaker-card .content {
    color: #333;
}
.show-more-btn {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
}
.show-more-btn:hover {
    background-color: #0056b3;
}