@media (max-width: 991px) {
    body > .header-center-backdrop {
        position: fixed;
        inset: 0;
        z-index: 2998;
        display: block;
        width: 100%;
        height: 100%;
        padding: 0;
        border: 0;
        background: rgba(16, 24, 40, .46);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity .2s ease, visibility 0s linear .2s;
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
    }

    body.is-center-menu-open > .header-center-backdrop {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transition-delay: 0s;
    }

    body > .header-center-dropdown {
        position: fixed !important;
        top: auto !important;
        right: 12px !important;
        bottom: max(12px, env(safe-area-inset-bottom)) !important;
        left: 12px !important;
        z-index: 2999 !important;
        width: auto !important;
        max-height: min(72dvh, 560px) !important;
        overflow-y: auto;
        overscroll-behavior: contain;
        padding: 10px;
        border-radius: 24px;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(30px) scale(.98);
        transform-origin: bottom center;
    }

    body.is-center-menu-open > .header-center-dropdown {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0) scale(1);
    }
}