.hda-section{padding:20px 0}.hda-title{font-size:2.5em;margin-bottom:20px;text-align:center}.project-card{border:1px solid #ddd;border-radius:5px;padding:15px;background-color:#fff;transition:box-shadow .3s ease}.project-card:hover{box-shadow:0 4px 8px rgba(0,0,0,.1)}.img-destaque{max-width:100%;height:auto}.article-meta{font-size:.9em;color:#666;margin-bottom:10px}.author{font-weight:700;color:#333}.hda-text{font-size:1.1em;line-height:1.6;color:#444}.btn-hda{display:inline-block;padding:10px 20px;background-color:#007bff;color:#fff;text-decoration:none;border-radius:5px;transition:background-color .3s ease}.btn-hda:hover{background-color:#0056b3;color:#fff}@media (max-width:768px){.col-md-4{flex:0 0 100%;max-width:100%}}