:root{--blue:#0B3D91;--ink:#172238;--muted:#68748a;--line:#e6ebf2;--bg:#f5f7fb;--white:#fff;--shadow:0 14px 34px rgba(21,42,78,.09)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:"Noto Sans SC","Microsoft YaHei",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:#11213e;color:#d9e4f4;font-size:13px}.topbar-inner{min-height:36px;display:flex;justify-content:space-between;align-items:center}.topbar a{color:#edf4ff}.topbar-contact{display:flex;gap:12px}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:78px;display:flex;align-items:center;gap:30px}.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap;color:var(--blue);font-size:18px}.logo img{width:35px;height:35px;object-fit:contain;border-radius:7px}.main-nav{flex:1}.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:25px 14px;font-size:15px;font-weight:600;white-space:nowrap}.nav-link:hover,.nav-link:focus{color:var(--blue)}.has-arrow:after{content:"";display:inline-block;width:6px;height:6px;margin:0 0 3px 8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:330px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:30}.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;transform:translateX(-50%) translateY(0)}.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}.dropdown-title,.mega-title{font-size:13px;color:var(--blue);font-weight:800;margin:0 0 13px}.dropdown-articles{display:grid;gap:9px}.dropdown-articles a{font-size:14px;border-bottom:1px solid var(--line);padding-bottom:8px}.dropdown-more,.mega-footer{display:block;margin-top:16px;color:var(--blue);font-size:13px;font-weight:700}.mega-menu{width:700px}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{display:block;border:1px solid var(--line);padding:10px;border-radius:9px;background:#fbfcff;min-width:0}.mega-card:hover{border-color:#a9bee3;box-shadow:0 5px 16px rgba(11,61,145,.09)}.mega-card-logo{display:flex;align-items:center;gap:7px;font-size:13px}.mega-card-logo img{width:27px;height:27px;object-fit:contain}.mega-card p{margin:6px 0 0;color:var(--muted);font-size:11px;line-height:1.5}.mega-card-meta{display:flex;flex-wrap:wrap;gap:4px 8px;color:var(--muted);font-size:10px;margin-top:7px}.mega-layout{display:grid;grid-template-columns:135px 1fr;gap:18px}.mega-categories{border-right:1px solid var(--line);padding-right:12px}.mega-categories a{display:block;font-size:13px;padding:5px 0;color:#536078}.mega-video-cover,.mega-product-cover{width:100%;height:65px;object-fit:cover;border-radius:5px;margin-bottom:6px}.mega-video-title,.mega-product-title{font-size:12px;font-weight:700;display:block;line-height:1.4}.mega-tool-icon{width:28px!important;height:28px!important}.header-btns{display:flex;align-items:center;gap:13px}.header-member{font-size:13px;color:var(--blue);font-weight:700}.header-open{background:var(--blue);color:#fff;padding:8px 16px;border-radius:5px;font-size:13px;font-weight:700}.hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:6px;padding:9px;cursor:pointer}.hamburger span{height:2px;background:var(--blue);display:block;margin:4px 0;transition:.2s}.hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{display:none}.mobile-drawer{position:fixed;top:0;right:-360px;width:min(350px,88vw);height:100vh;background:#fff;z-index:60;overflow:auto;transition:right .25s;box-shadow:-10px 0 35px rgba(0,0,0,.16)}.mobile-drawer.open{right:0}.drawer-overlay.open{display:block;position:fixed;inset:0;background:rgba(12,24,44,.48);z-index:50}.drawer-head{display:flex;align-items:center;gap:15px;padding:18px 20px;border-bottom:1px solid var(--line);color:var(--blue);font-weight:700}.drawer-head>a{margin-left:auto;background:var(--blue);color:#fff;padding:4px 12px;border-radius:4px;font-size:13px}.drawer-close{border:0;background:transparent;font-size:28px;color:#6b7588;cursor:pointer}.drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:12px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);font:inherit;cursor:pointer}.drawer-toggle:after{content:"+";float:right;color:var(--blue);font-weight:700}.drawer-toggle.active:after{content:"−"}.drawer-submenu{display:none;padding:4px 0 7px 16px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:6px 0;color:var(--muted);font-size:14px}
    .footer{background:#101d35;color:#b9c7da;margin-top:70px}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px;padding:52px 0 40px}.footer .logo{color:#fff}.footer-brand p{font-size:13px;line-height:1.9;max-width:330px;margin:18px 0}.footer h3{font-size:15px;color:#fff;margin:3px 0 15px}.footer-links,.footer-contact{display:grid;gap:8px;font-size:13px}.footer a:hover{color:#fff}.footer-social a{font-size:13px;color:#dce9ff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:17px 0;display:flex;justify-content:space-between;gap:20px;font-size:12px}.footer-bottom-links{display:flex;gap:18px}
    .category-page{padding:42px 0 0}.page-heading{text-align:center;margin-bottom:35px}.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--blue);font-weight:800}.page-heading h1{font-size:clamp(28px,4vw,44px);margin:8px 0 10px;letter-spacing:.02em}.page-heading p{max-width:720px;margin:auto;color:var(--muted);font-size:15px}.article-list{display:grid;gap:18px}.article-card{display:grid;grid-template-columns:300px 1fr;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 5px 18px rgba(20,45,85,.04);min-height:205px}.article-cover{background:#e9eff8;min-height:205px}.article-cover img{width:100%;height:100%;object-fit:cover}.article-body{padding:23px 27px;min-width:0}.article-kicker{color:var(--blue);font-size:12px;font-weight:800;margin:0 0 4px}.article-title{font-size:21px;line-height:1.4;margin:0 0 8px}.article-summary{color:var(--muted);font-size:14px;line-height:1.8;margin:0 0 12px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}.article-meta{display:flex;flex-wrap:wrap;gap:8px 16px;color:#78849a;font-size:12px;margin-bottom:12px}.article-tags{color:#64799b;font-size:12px;word-break:break-word}.article-read{display:inline-block;color:var(--blue);font-size:13px;font-weight:800;margin-top:9px}.pagination{display:flex;justify-content:center;gap:7px;flex-wrap:wrap;margin:34px 0}.pagination a{background:#fff;border:1px solid var(--line);border-radius:5px;padding:6px 12px;color:#596982;font-size:13px}.pagination a.active,.pagination a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
    @media(max-width:1000px){.main-nav{display:none}.header-inner{height:68px}.header-btns{margin-left:auto}.hamburger{display:block}.footer-main{grid-template-columns:repeat(2,1fr);gap:30px}.mega-menu{display:none}}
    @media(max-width:640px){.container{width:min(100% - 28px,1180px)}.topbar-inner{display:block;padding:7px 0}.topbar-contact{margin-top:2px}.header-member{display:none}.header-open{padding:7px 12px}.category-page{padding-top:30px}.page-heading{margin-bottom:24px}.page-heading h1{font-size:30px}.article-card{grid-template-columns:1fr}.article-cover{height:190px;min-height:0}.article-body{padding:18px}.article-title{font-size:19px}.footer-main{grid-template-columns:1fr;padding:35px 0 28px}.footer-bottom{display:block;line-height:2}.footer-bottom-links{margin-top:5px}.footer{margin-top:45px}}