:root{
      --theme:#0B3D91;
      --deep:#071b45;
      --ink:#122347;
      --muted:#64748b;
      --line:#dbe5f1;
      --soft:#f3f7fc;
      --white:#fff;
      --shadow:0 16px 46px rgba(7,27,69,.1);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7faff;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    body.drawer-locked{overflow:hidden}
    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:var(--deep);color:#d9e7ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid #e7eef7}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--deep);white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:25px 13px;color:#23385e;font-size:15px;font-weight:600;white-space:nowrap}
    .nav-link:hover{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);visibility:hidden;opacity:0;background:#fff;border:1px solid #e2eaf4;border-radius:16px;box-shadow:var(--shadow);transition:.2s ease;pointer-events:none}
    .dropdown-panel{width:300px;padding:20px}
    .mega-menu{width:min(900px,calc(100vw - 40px));padding:24px}
    .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:-14px;height:14px}
    .dropdown-title,.mega-title-row{margin:0 0 14px;color:var(--deep);font-weight:800}
    .dropdown-panel article{padding:8px 0;border-bottom:1px solid #edf2f8;font-size:14px}
    .dropdown-panel article a:hover,.dropdown-more{color:var(--theme)}
    .dropdown-more{display:inline-block;margin-top:14px;font-size:13px;font-weight:700}
    .mega-title-row{display:flex;align-items:center;justify-content:space-between;gap:15px}
    .mega-title-row span{font-size:12px;color:var(--muted);font-weight:400}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{min-width:0;border:1px solid #e6edf6;border-radius:12px;padding:12px;background:#fbfdff;transition:.2s}
    .mega-card:hover{border-color:#9bb8e4;transform:translateY(-2px)}
    .mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:7px}
    .mega-card strong{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card p{margin:4px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
    .mega-meta{display:flex;flex-wrap:wrap;gap:6px;color:var(--muted);font-size:11px;margin-top:7px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 16px}
    .mega-categories a{padding:4px 10px;border-radius:20px;background:#edf4ff;color:var(--theme);font-size:12px}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid #e7eef7;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .header-account{color:var(--theme);font-size:14px;font-weight:700}
    .header-open{padding:9px 17px;border-radius:9px;background:var(--theme);color:#fff;font-size:14px;font-weight:700}
    .header-open:hover{background:#082d70}
    .hamburger{display:none;width:42px;height:38px;padding:8px;border:1px solid #dce7f4;border-radius:9px;background:#fff;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;margin:4px auto;background:var(--deep);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{position:fixed;inset:0;background:rgba(3,15,40,.5);opacity:0;visibility:hidden;transition:.2s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;z-index:41;transform:translateX(100%);transition:.25s;overflow-y:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:800}
    .drawer-head a{margin-left:auto;padding:6px 12px;border-radius:7px;background:var(--theme);color:#fff;font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 20px 40px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf2f7;background:none;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted);font-size:20px;font-weight:400}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{max-height:0;overflow:hidden;transition:max-height .25s;padding-left:15px}
    .drawer-submenu.open{max-height:600px}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:var(--deep);color:#cbd8ee}
    .footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:42px;padding:54px 0 42px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer-brand p{margin:0;color:#aebed7;font-size:13px;line-height:1.9}
    .footer h3{margin:0 0 16px;color:#fff;font-size:15px}
    .footer-links{display:grid;gap:8px}
    .footer a:hover{color:#fff}
    .footer-links a,.footer-contact a,.footer-social{font-size:13px;color:#aebed7}
    .footer-contact{display:grid;gap:9px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.13);font-size:12px;color:#91a6c7}

    .category-page{padding:0 0 20px}
    .page-hero{position:relative;overflow:hidden;padding:74px 0 82px;background:linear-gradient(135deg,#071b45 0%,#0b3d91 58%,#167ac2 100%);color:#fff}
    .page-hero:after{content:"";position:absolute;width:480px;height:480px;right:-160px;top:-240px;border:1px solid rgba(255,255,255,.18);border-radius:50%;box-shadow:0 0 0 35px rgba(255,255,255,.04),0 0 0 70px rgba(255,255,255,.035)}
    .page-hero-inner{position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:15px;color:#b9dbff;font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:28px;height:2px;background:#7ed5ff}
    .page-hero h1{max-width:760px;margin:0 0 15px;font-size:clamp(32px,5vw,58px);line-height:1.18;letter-spacing:-.04em}
    .page-hero p{max-width:690px;margin:0;color:#d5e8ff;font-size:16px}
    .category-wrap{padding:46px 0}
    .content-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}
    .content-heading h2{margin:0;color:var(--deep);font-size:28px}
    .content-heading p{margin:5px 0 0;color:var(--muted);font-size:14px}
    .article-list{display:grid;gap:20px}
    .article-card{display:grid;grid-template-columns:300px minmax(0,1fr);gap:26px;padding:18px;background:#fff;border:1px solid #e5edf7;border-radius:var(--radius);box-shadow:0 8px 28px rgba(18,54,103,.05);transition:.2s}
    .article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#b5ccea}
    .article-cover{height:210px;border-radius:12px;overflow:hidden;background:#dcecff}
    .article-cover img{width:100%;height:100%;object-fit:cover}
    .article-body{min-width:0;padding:3px 4px 3px 0}
    .article-label{display:inline-flex;padding:4px 10px;border-radius:20px;background:#eaf2ff;color:var(--theme);font-size:12px;font-weight:700}
    .article-title{display:block;margin:12px 0 8px;color:var(--deep);font-size:22px;line-height:1.4;font-weight:800}
    .article-title:hover{color:var(--theme)}
    .article-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin:0 0 15px;color:#5a6b85;font-size:14px;line-height:1.8}
    .article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;padding-top:13px;border-top:1px solid #edf2f7;color:#74839a;font-size:12px}
    .article-tags{display:flex;flex-wrap:wrap;gap:6px;margin:13px 0}
    .article-tags span{padding:3px 8px;border-radius:5px;background:#f2f6fb;color:#60718b;font-size:11px}
    .read-more{display:inline-flex;align-items:center;gap:8px;margin-top:2px;color:var(--theme);font-size:13px;font-weight:800}
    .read-more:after{content:"→";font-size:18px;transition:.2s}
    .read-more:hover:after{transform:translateX(4px)}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:38px}
    .pagination a{min-width:38px;padding:7px 12px;border:1px solid #dbe6f2;border-radius:8px;background:#fff;color:#526781;text-align:center;font-size:13px}
    .pagination a:hover,.pagination a.active{border-color:var(--theme);background:var(--theme);color:#fff}
    .empty-state{padding:55px 20px;border:1px dashed #bfd0e6;border-radius:16px;background:#fff;text-align:center;color:var(--muted)}
    @media(max-width:1100px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:7px 0;align-items:flex-start}
      .topbar-contact{gap:8px;flex-direction:column;text-align:right}
      .header-inner{min-height:68px;gap:10px}
      .header-account{display:none}
      .header-open{padding:7px 11px;font-size:12px}
      .page-hero{padding:52px 0 58px}
      .page-hero h1{font-size:36px}
      .page-hero p{font-size:14px}
      .category-wrap{padding:32px 0}
      .content-heading{display:block}
      .content-heading h2{font-size:24px}
      .article-card{grid-template-columns:1fr;gap:16px;padding:13px}
      .article-cover{height:190px}
      .article-title{font-size:19px}
      .article-summary{-webkit-line-clamp:4}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:38px 0}
      .footer-bottom{display:block;line-height:2}
    }