могу ли я их в свой плагин просто добавить?

/* Общий список новостей (news_list.mustache) */


.iq-news-wrapper {
    padding: 24px 0;
}

.iq-news-header h2 {
    font-weight: 700;
    font-size: 28px;
}

.iq-news-all-link {
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
}

.iq-news-all-link:hover {
    text-decoration: underline;
}

.iq-news-card {
    
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.iq-news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

.iq-news-image-wrapper {
    border-radius: 24px 24px 0px 0px !important;
    overflow: hidden;
}

.iq-news-image {
    height: 260px;
    object-fit: cover;
}

.iq-news-image-placeholder {
    border-radius: 24px 24px 0px 0px !important;
    height: 260px;
    background: #f2f2f2;
    font-size: 14px;
}

.iq-news-body {
    background: #f7f7f7;
    border-radius: 0px 0px 24px 24px !important;
   
}

.iq-news-card-title {
    font-weight: 600;
    font-size: 16px;
    color: #1c1c1c;
}

.iq-news-card-date {
    font-size: 13px;
    color: #324594;
}
.iq-news-card-summary {
    font-size: 14px;
    color: #555;
}

/* Если хочешь жёстко максимум 2 строки – можно так: */
.iq-news-card-summary {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Страница одной новости (news_view.mustache) */

.iq-news-back-link {
    font-size: 14px;
    text-decoration: none;
    background-color: #324594;
    padding: 10px;
    border: 1px solid #324594;
    border-radius: 6px;
    color: #ffffff !important;
}

.iq-news-back-link:hover {
    text-decoration: underline;
}

.iq-news-view-title {
    font-weight: 700;
    font-size: 28px;
}

.iq-news-view-meta {
    font-size: 14px;
    color: #9a9a9a;
}

.iq-news-view-image-wrapper {
    border-radius: 24px;
    overflow: hidden;
}

.iq-news-view-image {
    object-fit: cover;
    max-height: 420px;
}

.iq-news-view-content {
    font-size: 16px;
    line-height: 1.6;
}

/* Мобилка */
@media (max-width: 767.98px) {
    .iq-news-image,
    .iq-news-image-placeholder,
    .iq-news-view-image {
        height: 220px;
        max-height: 220px;
    }
}