/* ===== 产品导航下拉菜单 ===== */
.has-dropdown { position: relative; }
.nav-dropdown-toggle { display: flex; align-items: center; gap: 4px; }
.nav-dropdown-toggle .arrow { font-size: 12px; transition: transform 0.2s; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s;
    z-index: 1001;
}
.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.has-dropdown:hover .nav-dropdown-toggle .arrow { transform: rotate(180deg); }
.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: #475569;
    font-size: 15px;
    white-space: nowrap;
}
.dropdown-menu li a:hover {
    background: #eff6ff;
    color: #1a56db;
}

/* ===== 分类页子分类标签 ===== */
.sub-cat-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}
.sub-cat-tag {
    padding: 6px 16px;
    background: #eff6ff;
    color: #1a56db;
    border-radius: 20px;
    font-size: 14px;
}

/* ===== 移动端下拉菜单 ===== */
@media (max-width: 768px) {
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
        padding: 0 0 0 16px;
    }
    .has-dropdown.open .dropdown-menu { display: block; }
    .nav-dropdown-toggle .arrow { transition: transform 0.2s; }
    .has-dropdown.open .nav-dropdown-toggle .arrow { transform: rotate(180deg); }
}