Why the color of the text Sausage is red?

Question

css and html are :

#awesome .favorite:not(#awesome) .highlight {
    color: red;
}
#awesome .highlight:nth-of-type(1):nth-last-of-type(1) {
    color: blue;
}

<ul class="shopping-list" id="awesome">
    <li><span>Milk</span></li>
    <li class="favorite" id="must-buy"><span class="highlight">Sausage</span></li>
</ul>

how the parser decides the color red applied to text sausage?