/* 移动端图片优化 */
@media (max-width: 768px) {
img { max-width: 100%; height: auto; }
.news-grid { grid-template-columns: 1fr; gap: 16px; }
.news-card { padding: 16px; }
.news-card img { max-width: 100%; height: auto; border-radius: 8px; margin-bottom: 12px; }
}
@media (max-width: 480px) {
.news-card { padding: 12px; }
}