:root{
      --theme:#0B3D91;
      --ink:#111827;
      --muted:#64748b;
      --paper:#f7f8fb;
      --line:#e2e8f0;
      --white:#fff;
      --accent:#d9473f;
      --shadow:0 18px 50px rgba(15,23,42,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{background:#091b3c;color:#dbeafe;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:20px}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
    .logo img{width:36px;height:36px;object-fit:contain}
    .logo span{font-size:18px}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:27px 13px;font-size:14px;font-weight:700;color:#334155}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);visibility:hidden;opacity:0;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:.2s ease}
    .dropdown-panel{width:320px;padding:22px;border-radius:0 0 16px 16px}
    .mega-menu{width:min(850px,calc(100vw - 40px));padding:26px;border-radius:0 0 18px 18px}
    .nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{visibility:visible;opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .dropdown-title,.mega-title{font-size:18px;margin:0 0 14px}
    .dropdown-list{display:grid;gap:9px}
    .dropdown-list a{font-size:14px;padding-bottom:9px;border-bottom:1px solid var(--line)}
    .dropdown-list a:hover,.panel-more:hover{color:var(--theme)}
    .panel-more{display:inline-block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:800}
    .mega-grid{display:grid;grid-template-columns:210px 1fr;gap:24px}
    .mega-intro{border-right:1px solid var(--line);padding-right:20px}
    .mega-intro p{color:var(--muted);font-size:13px;margin:0 0 16px}
    .mega-intro>a{color:var(--theme);font-weight:800;font-size:13px}
    .mega-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{min-width:0;padding:12px;border:1px solid var(--line);border-radius:12px;transition:.2s}
    .mega-card:hover{border-color:#94a3b8;transform:translateY(-2px)}
    .mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:8px}
    .mega-card .video-thumb,.mega-card .product-thumb{width:100%;height:70px;object-fit:cover;border-radius:8px}
    .mega-card strong{display:block;font-size:13px;line-height:1.35}
    .mega-card p{font-size:11px;color:var(--muted);margin:6px 0 0;line-height:1.4}
    .mega-meta{display:flex;justify-content:space-between;gap:5px;color:var(--muted);font-size:10px;margin-top:7px}
    .category-links{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
    .category-links a{font-size:12px;padding:6px 10px;border-radius:999px;background:#eff6ff;color:var(--theme)}

    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .open-account{background:var(--theme);color:#fff;padding:10px 16px;border-radius:9px;font-size:13px;font-weight:800}
    .open-account:hover{background:#082e70}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:9px;cursor:pointer}
    .hamburger span{display:block;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{position:fixed;inset:0;background:rgba(2,6,23,.5);opacity:0;visibility:hidden;z-index:40;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:41;transform:translateX(100%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:22px;border-bottom:1px solid var(--line);font-weight:800}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:10px 22px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:15px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-weight:700;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:grid;gap:0;max-height:0;overflow:hidden;transition:.25s}
    .drawer-submenu.open{max-height:600px}
    .drawer-submenu a{padding:10px 12px;color:var(--muted);font-size:14px;border-bottom:1px solid #f1f5f9}
    .drawer-submenu a:hover{color:var(--theme)}

    .category-page{padding:72px 0 90px}
    .page-intro{position:relative;overflow:hidden;background:#0b1d3b;color:#fff;border-radius:24px;padding:54px clamp(24px,6vw,76px);margin-bottom:46px}
    .page-intro:before,.page-intro:after{content:"";position:absolute;border:1px solid rgba(147,197,253,.25);border-radius:50%}
    .page-intro:before{width:300px;height:300px;right:-80px;top:-140px}
    .page-intro:after{width:190px;height:190px;right:70px;bottom:-120px}
    .eyebrow{position:relative;z-index:1;color:#93c5fd;font-size:12px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
    .page-intro h1{position:relative;z-index:1;font-size:clamp(34px,5vw,64px);line-height:1.05;letter-spacing:-.055em;margin:13px 0 15px;max-width:780px}
    .page-intro p{position:relative;z-index:1;max-width:700px;color:#cbd5e1;margin:0;font-size:17px}
    .intro-index{position:absolute;right:42px;bottom:20px;color:rgba(255,255,255,.14);font-size:100px;font-weight:900;line-height:1}

    .article-list{display:grid;gap:22px}
    .article-card{display:grid;grid-template-columns:300px minmax(0,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 28px rgba(15,23,42,.04);transition:.2s}
    .article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bfd0e8}
    .article-cover{min-height:230px;background:#e2e8f0}
    .article-cover img{width:100%;height:100%;object-fit:cover}
    .article-body{min-width:0;padding:27px 30px;display:flex;flex-direction:column}
    .article-category{display:inline-flex;align-self:flex-start;padding:5px 10px;border-radius:999px;background:#eaf1fb;color:var(--theme);font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}
    .article-body h2{font-size:25px;line-height:1.2;letter-spacing:-.03em;margin:13px 0 10px}
    .article-body h2 a:hover{color:var(--theme)}
    .article-summary{color:var(--muted);font-size:15px;margin:0 0 18px;display:block}
    .article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;color:#64748b;font-size:12px;margin-top:auto;padding-top:15px;border-top:1px solid var(--line)}
    .article-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}
    .article-tags span{font-size:11px;color:var(--theme);background:#f1f5f9;padding:4px 8px;border-radius:6px}
    .read-more{display:inline-flex;align-items:center;gap:7px;margin-top:18px;color:var(--theme);font-size:13px;font-weight:900}
    .read-more:after{content:"→";font-size:17px}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:42px}
    .pagination a{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:9px;background:#fff;color:#475569;font-size:13px;font-weight:700}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}

    .footer{background:#081a38;color:#cbd5e1;padding-top:58px}
    .footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:46px}
    .footer .logo{color:#fff;margin-bottom:17px}
    .footer-brand p{max-width:330px;color:#94a3b8;font-size:13px;margin:0}
    .footer h3{color:#fff;font-size:14px;margin:5px 0 17px}
    .footer-links{display:grid;gap:9px}
    .footer-links a,.footer-contact span{font-size:13px;color:#94a3b8}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:10px}
    .social-links{margin-top:20px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-top:1px solid rgba(148,163,184,.2);font-size:12px;color:#94a3b8}
    .footer-bottom-links{display:flex;gap:18px}
    .footer-bottom-links a:hover{color:#fff}

    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .mega-menu{display:none}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:68px}
      .header-btns{gap:7px}
      .header-btns>a:first-child{display:none}
      .open-account{padding:9px 11px;font-size:12px}
      .category-page{padding:38px 0 60px}
      .page-intro{padding:38px 24px;margin-bottom:30px;border-radius:18px}
      .page-intro h1{font-size:40px}
      .page-intro p{font-size:15px}
      .intro-index{right:15px;bottom:8px;font-size:70px}
      .article-card{display:block}
      .article-cover{height:205px;min-height:0}
      .article-body{padding:21px}
      .article-body h2{font-size:22px}
      .article-summary{font-size:14px}
      .footer-main{grid-template-columns:1fr 1fr;gap:30px 22px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom-links{margin-top:12px;flex-wrap:wrap}
    }
    @media(max-width:440px){
      .footer-main{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }