@media (max-width: 1039px) {
    .menu-toggle {
        display: block;
        font-size: 2rem;
        cursor: pointer;
        z-index: 2001;
    }

    .main-nav {
        display: none;
        flex-direction: column;
        background-color: white;
        padding: 1.25rem;
        width: max-content;
        min-width: 250px;
        position: absolute;
        top: 100%;
        right: 0;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1) !important;
        z-index: 2000;
        border-radius: 0px;
    }

        .main-nav.active {
            display: flex;
        }

    .menu {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

        .menu li {
            position: relative;
            width: 100%;
        }

        .menu a {
            padding: 0.75rem 1rem;
            font-size: 1rem;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #003366;
        }

    .submenu {
        display: none;
        position: static; /* ❗️stack instead of float */
        background-color: #f9f9f9;
        margin: 0.25rem 0 0 1rem;
        width: calc(100% - 1rem);
        box-shadow: none;
        padding: 0.25rem 0;
        z-index: auto;
        border-radius: 0;
    }

        .submenu li a {
            padding: 0.5rem 1rem;
            padding-left: 1.5rem;
            font-size: 0.95rem;
        }

    .dropdown.open > .submenu {
        display: flex;
        flex-direction: column;
    }

    .dropdown > a::after {
        content: ' ▾';
        margin-left: auto;
    }

    .dropdown.open > a::after {
        content: ' ▴';
    }
}