/* 双层导航：品牌识别与栏目操作分层，移动端合并为展开菜单。 */
.hero{background-color:#0b2438!important;background-repeat:no-repeat!important;background-size:auto 100%!important;background-position:right center!important}
@media(max-width:850px){.hero{background-size:cover!important;background-position:center center!important}}
.header{display:block;height:auto;padding:0;background:#0c263d;box-shadow:0 3px 22px #071c3020;backdrop-filter:none}.header-brand-row{display:flex;align-items:center;gap:36px;height:92px}.header .brand strong{color:#fff;font-size:29px;letter-spacing:5px}.header .brand small{color:#b3c7d4;font-size:9px;letter-spacing:2.5px}.header .brand svg{stroke:#d6e5eb;width:43px;height:49px}.header .brand svg path+path{stroke:#63d2ac}.brand-statement{border-left:1px solid #ffffff26;padding-left:29px;letter-spacing:2px;color:#dbe7ed;font-size:13px}.brand-statement small{display:block;letter-spacing:1.5px;color:#83a3b6;font-size:9px;margin-top:5px}.header-contact{margin-left:auto;color:#bfd2df;font-size:11px;display:flex;align-items:center;gap:10px}.header-contact b{font-size:19px;color:#69d7b3;margin-left:12px}.contact-dot{height:6px;width:6px;border-radius:50%;background:#6cddba;box-shadow:0 0 0 4px #6cddba13}.header-nav-row{background:#f5f8fa;border-bottom:1px solid #e0e7eb}.nav-inner{height:65px;display:flex;align-items:center;gap:28px}.header nav{display:flex;align-items:center;align-self:auto;justify-content:space-between;gap:5px;flex:1}.header nav a{font-size:13px;letter-spacing:1px;padding:10px 17px;border-radius:7px;color:#3e5263;gap:8px;transition:background .2s,color .2s}.header nav a>span{display:none;font-size:12px}.header nav a:hover{background:#e4eeec;color:#047b59}.header nav a[aria-current]{background:#e1eeea;color:#087859;font-weight:600}.header nav a[aria-current]:after{display:none}.header nav a[aria-current]:before{content:'';width:5px;height:5px;border-radius:50%;background:#059669}.header .nav-cta{display:flex;align-items:center;gap:30px;align-self:stretch;border-radius:0;background:#078563;padding:0 24px;color:white;letter-spacing:1px;font-size:12px;margin-left:10px}.header .nav-cta:hover{background:#066e53}.header .nav-cta span{margin-left:0}.hero{background-image:url('/assets/china-guard.webp');background-position:center 45%}.hero-shade{background:linear-gradient(90deg,#071e32f5 0%,#071e32d9 30%,#071e3259 59%,#071e3214 100%),linear-gradient(0deg,#071e3280,transparent 45%)}.hero-content{padding-top:69px}.hero-copy{max-width:460px}.hero-foot:after{content:none;font-size:9px;color:#ffffff90;position:absolute;right:0;bottom:30px;letter-spacing:1px}.about-visual img{object-position:center 35%}
@media(max-width:1200px){.header-brand-row{gap:25px;height:86px}.header nav a{padding:10px 12px;font-size:12px}.nav-inner{gap:10px}.header .nav-cta{padding:0 16px;gap:15px}.brand-statement{font-size:12px}.header-contact{font-size:10px}}
@media(max-width:1000px) and (min-width:851px){.header nav a{padding:10px 8px;letter-spacing:0}.header .nav-cta{font-size:11px;padding:0 13px;gap:8px}.brand-statement{font-size:11px}.header-contact{font-size:10px}}
@media(max-width:850px){.header-brand-row{height:82px;gap:20px}.header .brand strong{font-size:25px}.header .brand svg{width:35px;height:42px}.header .brand small{font-size:8px}.brand-statement{font-size:11px;padding-left:20px}.brand-statement small{font-size:8px}.header-contact{display:none}.header .menu-toggle{margin-left:auto;width:42px;height:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;background:#ffffff0a;border:1px solid #ffffff30;border-radius:7px}.menu-toggle>span{height:2px;width:18px;background:#d6e8e9;transition:transform .2s}.menu-toggle[aria-expanded=true]>span:first-child{transform:translateY(4.5px) rotate(45deg)}.menu-toggle[aria-expanded=true]>span:last-child{transform:translateY(-4.5px) rotate(-45deg)}.header-nav-row{display:none}.header.menu-open .header-nav-row{display:block}.nav-inner{height:auto;display:block;padding:15px 0 20px}.header nav,.header.menu-open nav{display:grid;position:static;padding:0;background:transparent;box-shadow:none;grid-template-columns:1fr 1fr;gap:7px}.header nav a{display:flex;justify-content:space-between;padding:13px 15px;font-size:13px;background:#fff;border:1px solid #e4ebed}.header nav a>span{display:block;color:#8b9d9e}.header nav a[aria-current]:before{display:none}.header .nav-cta{display:flex;justify-content:center;padding:12px 20px;border-radius:7px;margin:13px 0 0;gap:25px}.hero{background-position:60% center}.hero-shade{background:linear-gradient(90deg,#071e32ed,#071e32ad 45%,#071e3240),linear-gradient(0deg,#071e3260,transparent)}.hero-content{padding-top:60px}}
@media(max-width:550px){.header-brand-row{height:78px}.header .brand strong{font-size:23px}.header .brand small{font-size:7px;letter-spacing:2px}.header .brand svg{width:33px}.brand-statement{display:none}.hero{background-position:55% center}.hero-content{padding-top:50px}.hero-shade{background:linear-gradient(90deg,#071e32dc,#071e3278),linear-gradient(0deg,#071e32a0,transparent)}.hero-foot:after{right:0;bottom:0;font-size:8px;letter-spacing:0}}