.container {
    width: 1000px;
    max-width: 100%;
}

.three-cols-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.preview-area {
    width: 100%;
    text-align: center;
}

.preview-area .info {
    margin: 12px 0;
    font-weight: 600;
    color: #555;
}

.dim-badge {
    display: inline-block;
    background: #eef4ff;
    color: #4a90e2;
    border-radius: 12px;
    padding: 2px 10px;
    font-size: 13px;
    font-weight: 600;
    margin-left: 6px;
}

.thumbnails {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin: 16px 0;
}

.thumbnail {
    width: 140px;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 6px;
    background: #fafafa;
    text-align: center;
    font-size: 12px;
    color: #666;
}

.thumbnail img {
    width: 100%;
    height: 110px;
    object-fit: cover;
    border-radius: 4px;
    display: block;
    margin-bottom: 4px;
}

.hidden {
    display: none;
}

.download-btn {
    margin-top: 12px;
    background-color: #4a90e2;
}

.download-btn:hover {
    background-color: #357abd;
}