.az-container { font-family: Arial, sans-serif; max-width: 900px; margin: auto; }
.az-search { width: 100%; padding: 10px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 6px; }
.az-nav { text-align: center; margin-bottom: 15px; }
.az-letter { display: inline-block; margin: 3px; padding: 6px 10px; background: #f2f2f2; border-radius: 4px; cursor: pointer; transition: 0.2s; }
.az-letter:hover { background: #0073aa; color: #fff; }
.az-list ul { list-style: none; padding-left: 0; }
.az-list li { margin-bottom: 5px; }
.az-group { margin-bottom: 25px; }
.az-group h3 { border-bottom: 2px solid #0073aa; display: inline-block; padding-bottom: 3px; margin-bottom: 10px; }
@media (min-width: 600px) { .az-list ul { columns: 2; } }
@media (min-width: 900px) { .az-list ul { columns: 3; } }