/* 顶部导航 —— 工业深蓝 */
header{background:#1e293b;padding:22px 0;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,0.1)}
.nav-inner{display:flex;justify-content:space-between;align-items:center}
.nav-inner .search{max-width: 500px;}
.logo h2{color:#fff;font-size:26px}
.main-menu ul{list-style:none;display:flex;margin-bottom:0 !important;padding-left:0px;text-wrap:nowrap;}
.main-menu ul > li > a{color:#e2e8f0;text-decoration:none;font-size:15px;font-weight:600;padding:10px 10px;display:block}
.main-menu ul > li > a:hover{background:#475569;color:#38bdf8;border-radius:6px}

/* 下拉菜单 */
.dropdown{position:relative}
.dropdown > ul{display:none;position:absolute;top:100%;left:0;background:#334155;text-wrap:wrap;width:180px;padding:0;flex-direction:column;border-radius:6px;z-index:1000}
.dropdown:hover > ul{display:block}
.dropdown > ul > li > a{padding:10px 10px;color:#e2e8f0;display:block}
.dropdown > ul > li > a:hover{background:#475569;color:#fff}

.min-width-0{min-width: 0;}

.logo-icon {
    width: 32px;
    height: 32px;
}

@media(max-width:860px){
    .nav-inner{flex-wrap:wrap;}
    .nav-inner .title{order:1; width:100%; justify-content:space-between}
    .nav-inner .search{order:3; width:100%; margin-top:10px; margin-left:0px; max-width: none;}
    .nav-inner .col-12.col-md-6{width:100%}
    .nav-inner h2{font-size:18px}
    .main-menu {display:none; order:2; width:100%; margin-top:10px; border-radius: 8px; border: 1px solid #fff; max-height: 300px; overflow-y: auto;}
    .main-menu ul{flex-direction:column;background:#0f172a;padding:0;border-radius:0px}
    .main-menu ul li{width:100%;}
    .main-menu ul li a{display:block;padding:10px 5px;color:#e2e8f0}
    .main-menu ul li.dropdown>ul{position:static !important;box-shadow:none;width:100%;background:#1e293b;display:block !important}
    .mobile-menu-btn{display:block !important}
    .main-menu.show{display:block !important}
    .logo-icon{width:28px;height:28px;margin-right:5px}
    .banner h1{font-size:32px}
}

@media(min-width:861px){
    .mobile-menu-btn{display:none !important}
}