.catmenu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.3);
    z-index: 999;
}

.catmenu-overlay-open {
    display: block;
}

.catmenu {
    display: none;
    position: fixed;
    top: 60px; /* высота хедера */
    left: 0;
    bottom: 0;
    z-index: 1000;
    background: #fff;
    box-shadow: 4px 0 24px rgba(0,0,0,0.12);
    overflow: hidden;
}

.catmenu-open {
    display: flex;
}

.catmenu-columns {
    display: flex;
    height: 100%;
    overflow-x: auto;
}

.catmenu-col {
    min-width: 220px;
    height: 100%;
    overflow-y: auto;
    border-right: 1px solid #f0f0f0;
    padding: 8px 0;
}

.catmenu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    cursor: pointer;
    transition: background 0.1s;
}

    .catmenu-item:hover,
    .catmenu-item-active {
        background: #f5f5f5;
    }

.catmenu-link {
    display: block;
    padding: 10px 0;
    font-size: 14px;
    color: #1a1a1a;
    text-decoration: none;
    flex: 1;
}

.catmenu-arrow {
    font-size: 18px;
    color: #aaa;
    line-height: 1;
}