/* Video pages use the accepted main site's header geometry and native menu. */
.site-header{position:sticky;top:0;z-index:30;background:#f5f4f0f5;color:#171a1f;border-bottom:1px solid #dcddd9;backdrop-filter:blur(16px);font:400 16px/1.8 "Segoe UI","Microsoft YaHei","PingFang SC",sans-serif}
.site-header *{box-sizing:border-box}
.site-header .header-inner{width:100%;max-width:1440px;margin:auto;padding:0 clamp(24px,5.2vw,84px);display:flex;align-items:center;justify-content:space-between;min-height:86px;gap:30px}
.site-header .brand{display:flex;align-items:center;gap:13px;font-size:16px;font-weight:400;line-height:1.8;white-space:nowrap;color:#171a1f}
.site-header .brand-symbol{display:block;width:48px;height:34px;flex:none;background:transparent}
.site-header .brand-symbol img{position:static;display:block;width:100%;height:100%;max-width:100%;object-fit:contain}
.site-header .brand-word{display:block;font-size:21px;font-weight:650;letter-spacing:.07em}
.site-header #main-nav{display:flex;align-items:center;gap:clamp(10px,1.2vw,18px)}
.site-header #main-nav>a{display:block;min-height:44px;padding:12px 0;font-size:13px;font-weight:500;color:#4d545d;white-space:nowrap}
.site-header #main-nav>a:hover,.site-header #main-nav>a[aria-current]{color:#315af2}
.site-header #main-nav>.language-link{border-left:1px solid #dcddd9;padding-left:20px}
.site-header #main-nav>.nav-contact,.site-header .s361-native-nav .nav-contact{display:flex;align-items:center;gap:16px;min-height:0;padding:11px 16px;border:1px solid #315af2;border-radius:4px;background:#315af2;color:#fff;font-size:13px;font-weight:400}
.site-header #main-nav>.nav-contact:hover,.site-header .s361-native-nav .nav-contact:hover{background:#2148d5}
.site-header .icon{display:block;width:20px;height:20px;flex:none}
.site-header a:focus-visible,.site-header summary:focus-visible{outline:3px solid #315af2;outline-offset:4px}
.site-header .s361-native-nav{display:none}
.site-header .s361-native-nav:not([open])>nav{display:none!important}
@media(max-width:1150px){.site-header .header-inner{min-height:78px;gap:18px}.site-header .brand-word{font-size:19px}}
@media(max-width:960px){
 .site-header #main-nav{display:none}
 .site-header .s361-native-nav{display:block}
 .site-header .s361-native-nav>summary{width:46px;height:46px;list-style:none;cursor:pointer;border:1px solid #d9e0eb;display:flex;flex-direction:column;justify-content:center;gap:6px;padding:12px}
 .site-header .s361-native-nav>summary::-webkit-details-marker{display:none}
 .site-header .s361-native-nav>summary>span{display:block;height:1px;background:#28374e;width:20px}
 .site-header .s361-native-nav>summary>b{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}
 .site-header .s361-native-nav>nav{position:absolute;top:100%;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:16px 24px;background:#f8faff;color:#20314e;border-bottom:1px solid #d6dfed;box-shadow:0 12px 24px #0c203f12;max-height:calc(100dvh - 100px);overflow:auto}
 .site-header .s361-native-nav nav>a{display:block;min-height:44px;padding:10px 0;color:#263951;border-bottom:1px solid #e1e7ef;font-size:15px;font-weight:500;line-height:1.8}
 .site-header .s361-native-nav nav>.language-link{border-left:0}
 .site-header .s361-native-nav nav>.nav-contact{background:#315af2;color:white;padding:12px 16px;margin-top:12px;border:0;justify-content:space-between}
}
@media(max-width:700px){.site-header .header-inner{min-height:71px;padding-inline:24px}.site-header .brand{gap:11px}.site-header .brand-symbol{width:43px;height:31px}.site-header .brand-word{font-size:19px;letter-spacing:.06em}}
@media(max-width:360px){.site-header .header-inner{padding-inline:19px}.site-header .brand-word{font-size:18px}}