/* ========== 二级菜单：移动端 dropdown，PC 保持横排 tab ========== */
.subnav-mobile {
    display: none;
}

.subnav-desktop {
    display: flex;
}

.founder ul .img {margin-top: 20px;display: none;}

@media (max-width: 1023px) {
    .subnav-mobile {
        display: block;
    }

    .subnav-desktop {
        display: none;
    }
	
	.founder ul .img {display: block;}
	.founder .flex-shrink-0 {display: none;}
}

.subnav-dropdown {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.35s ease, opacity 0.25s ease;
}

.subnav-dropdown.is-open {
    max-height: 400px;
    opacity: 1;
}

.subnav-trigger .arrow {
    transition: transform 0.3s ease;
    transform: translateY(-50%);
    top: 50%;
}

.subnav-trigger[aria-expanded="true"] .arrow {
    transform: translateY(-50%) rotate(180deg);
}

/* ========== 专利墙 ========== */
@media (max-width: 1023px) {
    #patent-container {
        display: block;
        height: auto;
        overflow: visible;
    }

    #patent-intro {
        position: relative;
        left: 0;
        top: auto;
        transform: none;
        height: auto;
        background: none;
        padding-right: 0;
        margin-bottom: 3rem;
        pointer-events: auto;
    }

    #patent-track {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        height: auto;
        width: calc(100% + 32px);
        margin: 0 -4px;
        padding-left: 0;
    }

    #patent-track>div {
        width: 100%;
        height: auto;
        aspect-ratio: 7 / 10;
        padding: 0.75rem;
    }
}