.section-intro {
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 1.5em;
    color: #333;
}

.section-divider {
    height: 1px;
    background: linear-gradient(to right, rgba(0,0,0,0), rgba(0,0,0,0.2), rgba(0,0,0,0));
    margin: 3em 0;
}

.highlight-box {
    background-color: #f8f9fa;
    border-left: 4px solid #4a86e8;
    padding: 1.2em;
    margin: 1.5em 0;
    border-radius: 0 4px 4px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.highlight-box h5 {
    margin-top: 0;
    color: #1a73e8;
}

.highlight-box ul {
    margin-bottom: 0;
}

.trend-item, .feature-item, .breakthrough-item {
    margin-bottom: 1.2em;
}

.trend-item h5, .feature-item h5, .breakthrough-item h5 {
    font-size: 1.1em;
    margin-bottom: 0.3em;
    color: #333;
}

.trend-item i {
    color: #1a73e8;
    margin-right: 0.4em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5em;
    margin: 1.5em 0;
}

.future-perspective {
    margin-top: 2em;
    padding: 1em;
    background-color: #f0f7ff;
    border-radius: 4px;
}

.case-studies {
    margin: 1.5em 0;
}

.case-study {
    background-color: #fff;
    padding: 1em;
    margin-bottom: 1em;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.case-study h5 {
    color: #1a73e8;
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5em;
}

.case-study p {
    margin-bottom: 0;
}

.comparison-table {
    margin: 1.5em 0;
    overflow-x: auto;
}

.data-insights {
    margin: 1.5em 0;
}

.uml-container {
    margin: 2em 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 1em;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.uml-title {
    font-weight: bold;
    font-size: 1.1em;
    margin-bottom: 1em;
    text-align: center;
    color: #333;
}

.uml-diagram {
    text-align: center;
    margin: 1em 0;
    min-height: 200px;
}

.uml-caption {
    font-size: 0.9em;
    margin-top: 1em;
    color: #666;
    text-align: center;
}

.breakthroughs {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5em;
    margin: 1.5em 0;
}

.article-subtitle {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 1em;
    font-style: italic;
}

.article-author {
    display: inline-flex;
    align-items: center;
    margin-right: 1em;
}

.table-of-contents {
    background-color: #f8f9fa;
    padding: 1.5em;
    border-radius: 4px;
    margin-bottom: 2em;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.table-of-contents h3 {
    margin-top: 0;
    border-bottom: 1px solid #ddd;
    padding-bottom: 0.5em;
    margin-bottom: 0.8em;
}

.table-of-contents ol {
    margin-bottom: 0;
    padding-left: 1.5em;
}

.table-of-contents li {
    margin-bottom: 0.5em;
}

.key-trends {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5em;
    margin: 1.5em 0;
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5em;
    margin: 1.5em 0;
}

.challenge-item {
    background-color: #fff;
    border-radius: 4px;
    padding: 1.2em;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.challenge-item h5 {
    color: #e53935;
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5em;
}

.opportunity-item {
    background-color: #fff;
    border-radius: 4px;
    padding: 1.2em;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 1em;
}

.opportunity-item h5 {
    color: #43a047;
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5em;
}

.conclusion-box {
    background-color: #f5f5f5;
    border-radius: 4px;
    padding: 1.5em;
    margin: 2em 0;
    border-left: 4px solid #555;
}

@media (max-width: 768px) {
    .feature-grid, .breakthroughs, .key-trends, .challenge-grid {
        grid-template-columns: 1fr;
    }
}