Hi,

You can hide post excerpt by going to Appearance > Customizer:

• Posts Layout > Other Layout: Remove Post Excerpt.
• Homepage > Featured Categories: Remove Posts Excerpt on Featured Categories

OR you can use this custom CSS:

body:not(.single) .penci-grid li .item .item-content,
body:not(.single) .penci-masonry .item-masonry .item-content,
body:not(.single) .penci-grid .mixed-detail .item-content {
    display: none;
}