:root{
      --theme:#0B3D91;
      --ink:#101827;
      --muted:#667085;
      --line:#e5e7eb;
      --paper:#f6f8fb;
      --white:#fff;
      --shadow:0 16px 40px rgba(16,24,39,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);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:0 auto}

    .topbar{background:#0d1728;color:#dbe4f2;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:20px}
    .topbar a{color:#dbe4f2}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;font-weight:800;font-size:19px;letter-spacing:.02em}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:3px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 13px;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{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:translate(-50%,8px);width:300px;padding:20px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 12px 12px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:620px}
    .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;transform:translate(-50%,0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;height:12px;top:-12px}
    .mega-title{margin:0 0 12px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .dropdown-panel>a:not(.mega-footer){display:block;padding:9px 0;border-bottom:1px solid #eef0f4;font-size:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:block;padding:12px;border:1px solid #edf0f5;border-radius:9px;background:#fafbfc}
    .mega-card:hover{border-color:var(--theme);background:#f5f8ff}
    .mega-card img{width:26px;height:26px;object-fit:contain;margin-bottom:7px}
    .mega-card strong{display:block;font-size:13px;line-height:1.5}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5;margin-top:3px}
    .mega-footer{display:block;margin-top:14px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px}
    .member-btn{font-size:13px;color:var(--theme);white-space:nowrap}
    .open-account{padding:8px 14px;background:var(--theme);color:#fff;border-radius:5px;font-size:13px;white-space:nowrap}
    .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{position:fixed;inset:0;background:rgba(4,12,25,.5);opacity:0;visibility:hidden;transition:.25s;z-index:50}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:51;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.28s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:76px;display:flex;align-items:center;gap:16px;padding:0 22px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:14px}
    .drawer-close{border:0;background:none;font-size:29px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:12px 22px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf0f4;background:none;text-align:left;font:inherit;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:none;padding:4px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}

    .category-page{padding:62px 0 80px}
    .category-hero{padding:36px 0 42px;border-bottom:1px solid var(--line)}
    .eyebrow{color:var(--theme);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
    .category-hero h1{margin:10px 0 12px;font-size:clamp(32px,5vw,62px);line-height:1.12;letter-spacing:-.04em}
    .category-hero p{max-width:720px;margin:0;color:var(--muted);font-size:16px}
    .category-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .category-meta span{padding:7px 12px;background:#fff;border:1px solid var(--line);border-radius:99px;color:var(--muted);font-size:13px}
    .article-list{display:grid;gap:20px;margin-top:34px}
    .article-card{display:grid;grid-template-columns:300px minmax(0,1fr);gap:26px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 25px rgba(16,24,39,.035);transition:.2s}
    .article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9d5e8}
    .article-cover{min-height:205px;overflow:hidden;border-radius:9px;background:#e9eef5}
    .article-cover img{width:100%;height:100%;min-height:205px;object-fit:cover}
    .article-body{min-width:0;display:flex;flex-direction:column;align-items:flex-start}
    .article-channel{display:inline-flex;padding:4px 9px;background:#edf3ff;color:var(--theme);border-radius:4px;font-size:12px;font-weight:700}
    .article-body h2{margin:10px 0 8px;font-size:22px;line-height:1.4}
    .article-body h2 a:hover{color:var(--theme)}
    .article-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin:0;color:var(--muted);font-size:14px;line-height:1.8}
    .article-info{display:flex;flex-wrap:wrap;gap:13px;margin-top:14px;color:#7b8494;font-size:12px}
    .article-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px;color:var(--theme);font-size:12px}
    .article-tags span{padding:3px 8px;background:#f4f6f9;border-radius:4px}
    .read-more{margin-top:auto;padding-top:17px;color:var(--theme);font-size:13px;font-weight:800}
    .read-more:after{content:" →";transition:.2s}
    .read-more:hover:after{padding-left:5px}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:38px}
    .pagination a{min-width:36px;padding:7px 12px;text-align:center;border:1px solid var(--line);background:#fff;border-radius:5px;color:var(--muted);font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}

    .footer{background:#0d1728;color:#c4cfdd;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
    .footer-brand strong{display:block;color:#fff;font-size:20px;margin-bottom:12px}
    .footer p{margin:8px 0;color:#9eacbd;font-size:13px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:14px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;color:#aebccc;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;color:#8493a5;font-size:12px}

    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .article-card{grid-template-columns:240px minmax(0,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{align-items:flex-start;flex-direction:column;gap:2px;padding:8px 0}
      .topbar-links{gap:12px;flex-wrap:wrap}
      .logo{min-width:0;font-size:16px}
      .member-btn{display:none}
      .open-account{padding:7px 10px}
      .category-page{padding:32px 0 55px}
      .category-hero{padding:24px 0 30px}
      .category-hero h1{font-size:39px}
      .article-card{display:block;padding:14px}
      .article-cover,.article-cover img{min-height:190px;height:190px}
      .article-body{padding:16px 4px 4px}
      .article-body h2{font-size:19px}
      .read-more{margin-top:6px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{display:block;line-height:2}
      .footer-bottom span{display:block}
    }