.ost-site-header{height:70px!important;min-height:70px!important;padding:0!important;margin:0!important;background:#1a1a1a!important;position:sticky;top:0;z-index:9999;box-shadow:0 2px 12px rgba(0,0,0,.08);font-family:"Microsoft YaHei","PingFang SC",sans-serif;box-sizing:border-box!important}
.ost-site-header *{box-sizing:border-box}
.ost-nav-inner{max-width:1380px;height:70px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.ost-nav-logo{color:#fff!important;font-size:20px!important;font-weight:700!important;line-height:1!important;text-decoration:none!important;white-space:nowrap;margin:0!important}
.ost-main-nav{display:flex;align-items:center;gap:0;list-style:none!important;margin:0!important;padding:0!important;flex-wrap:nowrap}
.ost-main-nav li{list-style:none!important;margin:0!important;padding:0!important}
.ost-main-nav>li{position:relative}
.ost-main-nav a{display:block!important;padding:0 12px!important;line-height:70px!important;color:#fff!important;font-size:15px!important;font-weight:400!important;text-decoration:none!important;white-space:nowrap;margin:0!important;opacity:1!important}
.ost-main-nav a:hover,.ost-main-nav a.active{color:#2b7de9!important}
.ost-has-submenu>a::after{content:"▾";display:inline-block;margin-left:5px;font-size:11px;transition:transform .2s ease}
.ost-submenu{position:absolute;top:70px;left:0;z-index:10000;min-width:220px;margin:0!important;padding:8px 0!important;background:#1a1a1a;border-top:2px solid #2b7de9;border-radius:0 0 8px 8px;box-shadow:0 10px 24px rgba(0,0,0,.22);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,visibility .2s ease,transform .2s ease}
.ost-submenu-cases{min-width:300px}
.ost-main-nav .ost-submenu a{padding:12px 18px!important;line-height:1.5!important;color:#fff!important;font-size:14px!important;border:0!important;white-space:nowrap}
.ost-main-nav .ost-submenu a:hover,.ost-main-nav .ost-submenu a:focus,.ost-main-nav .ost-submenu a[aria-current="page"]{background:rgba(43,125,233,.16)!important;color:#67a5f5!important;outline:none}
.ost-has-submenu:hover>.ost-submenu,.ost-has-submenu:focus-within>.ost-submenu,.ost-has-submenu.submenu-open>.ost-submenu{opacity:1;visibility:visible;transform:translateY(0)}
.ost-has-submenu:hover>a::after,.ost-has-submenu:focus-within>a::after,.ost-has-submenu.submenu-open>a::after{transform:rotate(180deg)}
.ost-nav-cta{display:block!important;flex-shrink:0;background:#2b7de9!important;color:#fff!important;padding:10px 16px!important;border-radius:6px!important;font-size:14px!important;font-weight:500!important;line-height:1.4!important;text-decoration:none!important;white-space:nowrap;margin:0!important}
.ost-nav-toggle{display:none;background:transparent;border:0;padding:8px;cursor:pointer}
.ost-nav-toggle span{display:block;width:22px;height:2px;background:#fff;margin:5px 0}
@media(max-width:960px){
  .ost-nav-inner{position:relative;gap:10px}
  .ost-nav-toggle{display:block;order:3}
  .ost-nav-cta{margin-left:auto!important;padding:8px 12px!important;font-size:13px!important}
  .ost-main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#1a1a1a;flex-direction:column;align-items:stretch;padding:0 20px 14px!important;box-shadow:0 8px 18px rgba(0,0,0,.18);max-height:calc(100vh - 70px);overflow-y:auto}
  .ost-main-nav.open{display:flex}
  .ost-main-nav a{line-height:48px!important;border-bottom:1px solid rgba(255,255,255,.1)}
  .ost-submenu{position:static;display:none;min-width:0;margin:0!important;padding:0 0 6px 14px!important;border:0;border-radius:0;box-shadow:none;background:#111;opacity:1;visibility:visible;transform:none;transition:none}
  .ost-has-submenu:hover>.ost-submenu,.ost-has-submenu:focus-within>.ost-submenu{display:none}
  .ost-has-submenu.submenu-open>.ost-submenu{display:block}
  .ost-main-nav .ost-submenu a{padding:10px 14px!important;line-height:1.5!important;white-space:normal;border-bottom:1px solid rgba(255,255,255,.08)!important}
}
@media(max-width:480px){.ost-nav-cta{display:none!important}}

.ost-site-footer{margin:0!important;padding:48px 0 0!important;background:#111827!important;color:#cbd5e1!important;font-family:"Microsoft YaHei","PingFang SC",sans-serif!important;font-size:13px!important;line-height:1.8!important;box-sizing:border-box!important}
.ost-site-footer *{box-sizing:border-box}
.ost-footer-inner{max-width:1180px;margin:0 auto;padding:0 20px}
.ost-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.ost-footer-logo{color:#fff;font-size:18px;font-weight:700;line-height:1.45}
.ost-footer-brand p{margin:14px 0;color:#cbd5e1;line-height:1.8}
.ost-footer-contact{margin:7px 0;color:#cbd5e1}
.ost-footer-col h4{margin:0 0 14px;color:#fff;font-size:15px;line-height:1.5}
.ost-site-footer a{color:#cbd5e1!important;text-decoration:none!important}
.ost-footer-col a{display:block;margin:8px 0;line-height:1.6}
.ost-site-footer a:hover,.ost-site-footer a:focus{color:#67a5f5!important}
.ost-footer-col .ost-footer-cta{color:#f59e0b!important;font-weight:700}
.ost-footer-bottom{margin-top:32px;padding:18px 0;border-top:1px solid rgba(255,255,255,.14);color:#94a3b8;text-align:left}
.ost-footer-bottom p{margin:0;color:#94a3b8}
@media(max-width:800px){
  .ost-footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .ost-footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .ost-site-footer{padding-top:38px!important}
  .ost-footer-grid{grid-template-columns:1fr;gap:24px}
  .ost-footer-brand{grid-column:auto}
}