:root{--blue:#0B3D91;--ink:#172033;--muted:#64748b;--line:#e5eaf2;--bg:#f5f7fb;--white:#fff;--shadow:0 14px 40px rgba(16,35,70,.1)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#101b31;color:#dce5f5;font-size:13px}.topbar-inner{height:38px;display:flex;justify-content:space-between;align-items:center}.topbar-contact{display:flex;gap:12px}.topbar a:hover{color:#fff}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:76px;display:flex;align-items:center;gap:34px}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--blue);white-space:nowrap}.logo img{width:34px;height:34px;object-fit:contain}.main-nav{flex:1}.nav-list{list-style:none;margin:0;padding:0;display:flex;justify-content:center;gap:4px}.nav-item{position:relative}.nav-link{display:block;padding:25px 14px;font-size:15px;white-space:nowrap}.nav-link:hover{color:var(--blue)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);width:330px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:30}.mega-menu{width:760px}.nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{opacity:1;visibility:visible;pointer-events:auto}.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}.dropdown-title,.mega-title{margin:0 0 12px;font-weight:800;color:var(--blue)}.dropdown-articles{display:grid;gap:8px}.dropdown-articles a,.mega-categories a{display:block;padding:5px 0;font-size:14px}.dropdown-articles a:hover,.mega-categories a:hover{color:var(--blue)}.dropdown-more,.mega-footer{display:inline-block;margin-top:13px;padding-top:12px;border-top:1px solid var(--line);width:100%;color:var(--blue);font-size:14px}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.mega-card{border:1px solid var(--line);border-radius:9px;padding:11px;background:#fff;transition:.2s}.mega-card:hover{border-color:#aac0e7;transform:translateY(-2px)}.mega-card-logo{display:flex;align-items:center;gap:7px;font-size:13px}.mega-card-logo img{width:28px;height:28px;object-fit:contain}.mega-card p{font-size:12px;color:var(--muted);margin:8px 0 0}.mega-card-meta{display:flex;flex-wrap:wrap;gap:6px;color:var(--muted);font-size:11px;margin-top:8px}.mega-layout{display:grid;grid-template-columns:145px 1fr;gap:20px}.mega-video-cover,.mega-product-cover{width:100%;height:70px;object-fit:cover;border-radius:6px}.mega-video-title,.mega-product-title{display:block;font-size:13px;font-weight:700;margin-top:6px}.header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}.header-member{color:var(--blue);font-size:14px}.header-open{background:var(--blue);color:#fff;border-radius:6px;padding:7px 15px;font-size:14px}.hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}.hamburger span{display:block;width:23px;height:2px;background:var(--ink);margin:5px 0;transition:.2s}.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .drawer-overlay{display:none;position:fixed;inset:0;background:rgba(9,18,36,.48);z-index:50}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(350px,88vw);background:#fff;z-index:51;transform:translateX(100%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{height:68px;padding:0 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);font-weight:700;color:var(--blue)}.drawer-head>a{margin-left:auto;background:var(--blue);color:#fff;padding:4px 10px;border-radius:4px;font-size:13px}.drawer-close{border:0;background:transparent;font-size:28px;cursor:pointer;color:var(--muted)}.drawer-menu{padding:15px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:12px 0;border:0;background:none;text-align:left;font-size:15px;color:var(--ink);cursor:pointer;border-bottom:1px solid #eef1f6}.drawer-toggle:after{content:"＋";float:right;color:var(--muted)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 0 5px 15px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}
    .ea-content-stack{padding:58px 0 80px}.product-breadcrumb{font-size:13px;color:var(--muted);margin-bottom:24px}.product-breadcrumb a{color:var(--blue)}.product-hero{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;display:grid;grid-template-columns:270px minmax(0,1fr);gap:38px;box-shadow:var(--shadow);align-items:center}.product-cover{height:235px;border-radius:14px;background:#eef3fb;display:flex;align-items:center;justify-content:center;padding:22px}.product-cover img{height:100%;width:100%;object-fit:contain}.product-kicker{color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.08em}.product-title{font-size:clamp(28px,4vw,46px);line-height:1.2;margin:8px 0 14px}.product-summary{font-size:17px;color:var(--muted);margin:0 0 20px}.product-meta{display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--muted);font-size:13px}.product-meta strong{color:var(--ink)}.product-actions{display:flex;gap:12px;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:7px;padding:10px 20px;background:var(--blue);color:#fff;font-weight:700;border:1px solid var(--blue)}.btn.secondary{background:#fff;color:var(--blue)}.product-lower{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:26px;margin-top:26px}.product-content,.related-products{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 8px 25px rgba(16,35,70,.05)}.section-title{font-size:22px;margin:0 0 20px;padding-bottom:13px;border-bottom:1px solid var(--line)}.product-body{min-width:0;max-width:100%;overflow-x:auto;color:#38465d}.product-body img,.product-body table{max-width:100%;height:auto}.product-body table{border-collapse:collapse}.product-body th,.product-body td{border:1px solid var(--line);padding:8px}.related-products{padding:22px}.related-card{display:block;padding:13px 0;border-bottom:1px solid var(--line)}.related-card:last-child{border-bottom:0}.related-card img{height:100px;width:100%;object-fit:cover;border-radius:8px;margin-bottom:8px}.related-card strong{font-size:14px}.related-card p{font-size:12px;color:var(--muted);margin:5px 0}.footer{background:#101b31;color:#c8d3e6}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px;padding:52px 0 38px}.footer .logo{color:#fff}.footer-brand>p{color:#9eacc2;font-size:13px;max-width:320px}.footer h3{font-size:15px;color:#fff;margin:4px 0 16px}.footer-links,.footer-contact{display:grid;gap:9px;font-size:13px}.footer-links a:hover,.footer-contact a:hover{color:#fff}.footer-social{font-size:13px}.footer-bottom{border-top:1px solid #293750;display:flex;justify-content:space-between;gap:20px;padding:17px 0;font-size:12px;color:#8f9db3}.footer-bottom-links{display:flex;gap:18px}
    @media(max-width:980px){.main-nav{display:none}.header-inner{height:68px}.header-btns{margin-left:auto}.hamburger{display:block}.mega-menu{display:none}.product-hero{grid-template-columns:210px minmax(0,1fr);gap:25px}.footer-main{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.container{width:min(100% - 28px,1180px)}.topbar-inner{height:auto;min-height:38px;align-items:flex-start;flex-direction:column;padding:7px 0;gap:2px}.topbar-contact{gap:8px}.header-member{display:none}.header-open{padding:6px 10px}.ea-content-stack{padding:34px 0 55px}.product-hero{display:block;padding:22px}.product-cover{height:190px;margin-bottom:22px}.product-title{font-size:31px}.product-summary{font-size:15px}.product-lower{display:block}.related-products{margin-top:20px}.product-content{padding:22px}.footer-main{grid-template-columns:1fr;gap:25px;padding:36px 0 28px}.footer-bottom{display:block}.footer-bottom-links{margin-top:8px}.mega-grid{grid-template-columns:1fr 1fr}}