body {
    background: #f8f9fa;
}

.article-card img {
    object-fit: cover;
    height: 180px;
    width: 100%;
}

.sidebar-block {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 0 6px rgba(0, 0, 0, 0.04);
    margin-bottom: 20px;
}