相关疑难解决方法(0)

.article, .note {
    color: var(--text-color, red);
 }
 .theme {
    --text-color: blue;
 }
 .theme .note {
     --text-color: unset;
 }

<section>
    <p class="article">Article</p>
    <p class="note">Note</p>
</section>
<section class="theme">
    <p class="article">Article</p>
    <p class="note">Note</p>
</section>