.highlight-topic {
    background-color: #FFEB3B;
    padding: 2px 5px;
    font-weight: bold;
    display: inline-block;
    position: relative;
}

.collapsible-story {
    border-left: 4px solid #0078d4;
    padding: 15px;
    margin: 20px 0;
    background-color: #f9f9f9;
}

.collapsible-story-header {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
}

.collapsible-story-header::after {
    content: '+';
    font-size: 20px;
    font-weight: bold;
}

.collapsible-story.active .collapsible-story-header::after {
    content: '-';
}

.collapsible-story-content {
    display: none;
    padding-top: 15px;
    border-top: 1px solid #e1e1e1;
    margin-top: 15px;
}

.collapsible-story.active .collapsible-story-content {
    display: block;
}

.multimedia-section {
    margin: 30px 0;
    border-top: 1px solid #e1e1e1;
    padding-top: 20px;
}

.multimedia-section h3 {
    margin-bottom: 20px;
}

.video-container {
    margin-bottom: 30px;
}

.video-container h4 {
    margin-bottom: 10px;
}

.video-container p {
    margin-bottom: 15px;
}

.video-frame {
    width: 100%;
    height: 315px;
    border: none;
}

.podcast-frame {
    width: 100%;
    height: 152px;
    border: none;
}

@media (max-width: 768px) {
    .video-frame, .podcast-frame {
        height: 250px;
    }
}

@media (max-width: 576px) {
    .video-frame, .podcast-frame {
        height: 200px;
    }
}