:root{--theme:#0B3D91;--ink:#10233f;--muted:#66748a;--line:#dce5ef;--soft:#f3f7fb;--white:#fff}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;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:#071b3d;color:#dce8fb;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:22px}
    .topbar a{color:#dce8fb}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 3px 16px rgba(16,35,63,.05)}
    .header-inner{height:78px;display:flex;align-items:center;gap:35px}
    .logo{display:flex;align-items:center;gap:11px;min-width:190px;font-size:20px;font-weight:800;color:var(--theme)}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;justify-content:center;align-items:stretch;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:78px;padding:0 15px;font-size:15px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;margin:0 0 3px 8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;pointer-events:none;transition:.2s ease;background:#fff;border:1px solid var(--line);box-shadow:0 18px 40px rgba(18,45,80,.14);border-radius:0 0 12px 12px}
    .dropdown-panel{width:250px;padding:12px}
    .dropdown-panel a{display:block;padding:10px 12px;border-radius:7px;font-size:14px}
    .dropdown-panel a:hover{background:var(--soft);color:var(--theme)}
    .mega-menu{width:720px;padding:20px}
    .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;pointer-events:auto}
    .nav-item:after{content:"";position:absolute;top:100%;left:0;width:100%;height:12px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:grid;grid-template-columns:42px 1fr;gap:2px 10px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fff}
    .mega-card:hover{border-color:#9eb4d2;background:#f7faff}
    .mega-card img{width:42px;height:42px;grid-row:span 3;object-fit:contain;border-radius:7px}
    .mega-card strong{font-size:13px;line-height:1.35}
    .mega-card small{color:var(--muted);font-size:11px;line-height:1.4}
    .mega-footer{display:flex;align-items:center;flex-wrap:wrap;gap:12px;border-top:1px solid var(--line);margin-top:17px;padding-top:14px;color:var(--theme);font-size:13px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link{color:var(--theme);font-size:14px;font-weight:600}
    .open-account{padding:8px 15px;border-radius:7px;background:var(--theme);color:#fff;font-size:13px}
    .hamburger{display:none;border:0;background:none;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(4,16,38,.48);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(390px,88vw);z-index:50;background:#fff;transform:translateX(100%);transition:.25s ease;overflow:auto;box-shadow:-10px 0 30px rgba(0,0,0,.16)}
    .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)}
    .drawer-head strong{flex:1}
    .drawer-head a{padding:6px 11px;background:var(--theme);color:#fff;border-radius:5px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--ink);cursor:pointer}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);font:inherit;font-weight:600}
    .drawer-toggle{cursor:pointer;position:relative}
    .drawer-toggle:after{content:"+";position:absolute;right:4px;font-size:20px;color:var(--theme)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#081a38;color:#d8e3f2}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding:48px 0 38px}
    .footer-brand strong{display:block;color:#fff;font-size:21px;margin-bottom:12px}
    .footer p{margin:7px 0;color:#b7c7dc;font-size:13px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;color:#b7c7dc;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:17px 0;border-top:1px solid rgba(255,255,255,.14);color:#9eb1c9;font-size:12px}
    .category-page{padding:54px 0 0}
    .category-intro{text-align:center;max-width:760px;margin:0 auto 38px}
    .category-kicker{display:inline-block;padding:5px 12px;border-radius:20px;background:#e7effa;color:var(--theme);font-size:12px;font-weight:700;letter-spacing:1px}
    .category-intro h1{margin:14px 0 10px;font-size:38px;line-height:1.25;color:#10233f}
    .category-intro p{margin:0;color:var(--muted);font-size:15px}
    .article-list{display:grid;gap:20px}
    .article-card{display:grid;grid-template-columns:300px 1fr;gap:25px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 25px rgba(30,65,105,.05);transition:.2s}
    .article-card:hover{transform:translateY(-3px);border-color:#a9bfdb;box-shadow:0 14px 30px rgba(30,65,105,.1)}
    .article-cover{height:205px;overflow:hidden;border-radius:9px;background:#e7edf5}
    .article-cover img{width:100%;height:100%;object-fit:cover}
    .article-body{min-width:0;display:flex;flex-direction:column;align-items:flex-start}
    .article-category{display:inline-block;margin-bottom:7px;color:var(--theme);font-size:12px;font-weight:700}
    .article-title{margin:0 0 8px;font-size:22px;line-height:1.4;color:#10233f}
    .article-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin:0 0 14px;color:#65748a;font-size:14px;line-height:1.8}
    .article-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:auto;color:#8492a5;font-size:12px}
    .article-tags{margin:11px 0 15px;color:#607796;font-size:12px}
    .read-more{display:inline-flex;align-items:center;color:var(--theme);font-size:13px;font-weight:700}
    .read-more:after{content:"→";margin-left:8px;font-size:17px}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:38px 0 0}
    .pagination a{min-width:36px;padding:6px 11px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:6px;color:#53667e;font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}
    @media(max-width:1050px){
      .header-inner{gap:15px}.nav-link{padding:0 9px;font-size:14px}.logo{min-width:160px}
      .mega-menu{left:auto;right:0;transform:none}
    }
    @media(max-width:800px){
      .container{width:min(100% - 28px,620px)}
      .topbar .container{min-height:42px;align-items:flex-start;justify-content:center;flex-direction:column;gap:0}
      .topbar-links{gap:12px;font-size:12px}
      .header-inner{height:68px}.main-nav{display:none}.header-btns{margin-left:auto}.member-link{display:none}.open-account{font-size:12px;padding:7px 10px}.hamburger{display:block}
      .category-page{padding-top:36px}.category-intro{margin-bottom:27px}.category-intro h1{font-size:29px}
      .article-card{grid-template-columns:1fr;gap:16px;padding:15px}.article-cover{height:190px}.article-title{font-size:19px}.article-summary{-webkit-line-clamp:4}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:36px 0}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}
    }
    @media(max-width:480px){
      .topbar-links{display:block}.topbar-links a{margin-right:10px}.open-account{display:none}
      .category-intro h1{font-size:26px}.article-cover{height:170px}.article-meta{gap:9px}.footer-grid{grid-template-columns:1fr}
    }