/* 导航下拉菜单 */
.nav-item {
    position: relative;
}
.nav-item:hover .nav-submenu {
    display: block;
}
.nav-submenu {
    display: none;
    position: absolute;
    top: 90px;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 160px;
    padding: 10px 0;
    z-index: 99999;
    border-radius: 4px;
}
.nav-submenu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid #fff;
}
.nav-subitem {
    line-height: 44px;
    text-align: center;
}
.nav-subitem a {
    display: block;
    color: #333;
    font-size: 15px;
    padding: 0 20px;
    transition: all 0.3s;
}
.nav-subitem a:hover {
    color: #8B0000;
    background: #f5f5f5;
}
.header2 .nav-submenu {
    top: 90px;
}
.header2 .nav-subitem a {
    color: #333;
}

/* 子栏目切换标签 */
.team-tabs {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px auto 0;
    max-width: 800px;
    gap: 20px;
}
.team-tab {
    padding: 10px 40px;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #333;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s;
    background: #fff;
}
.team-tab:hover, .team-tab.active {
    background: #8B0000;
    color: #fff;
    border-color: #8B0000;
}

@media only screen and (max-width:768px) {
    .team-tabs {
        flex-wrap: wrap;
        padding: 0 20px;
        gap: 10px;
    }
    .team-tab {
        padding: 8px 20px;
        font-size: 14px;
    }
    .nav-submenu {
        display: none !important;
    }
}