:root{
      --theme:#0B3D91;
      --ink:#142238;
      --muted:#6c7890;
      --line:#dce4ef;
      --paper:#f5f8fc;
      --white:#fff;
      --shadow:0 18px 45px rgba(11,61,145,.1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{background:#081d40;color:#dce8fa;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{margin-left:22px;color:#eaf2ff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;font-weight:800;color:var(--theme);font-size:18px}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:3px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 13px;font-size:14px;font-weight:700;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);margin-top:-4px}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:310px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:min(760px,calc(100vw - 30px))}
    .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}
    .dropdown-panel a:not(.mega-footer){display:block;padding:9px 10px;border-bottom:1px solid #edf1f7;font-size:14px}
    .dropdown-panel a:not(.mega-footer):hover{background:#f0f5fc;color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fbfdff;transition:.2s}
    .mega-card:hover{border-color:var(--theme);transform:translateY(-2px)}
    .mega-card img{width:42px;height:42px;object-fit:contain;margin-bottom:8px}
    .mega-card strong{display:block;font-size:13px;margin-bottom:4px}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5}
    .mega-footer{display:block;margin-top:15px;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:12px;white-space:nowrap}
    .account-link{padding:9px 14px;border-radius:7px;background:var(--theme);color:#fff;font-size:13px;font-weight:700}
    .header-btns>a:first-child{font-size:13px;color:var(--theme);font-weight:700}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;background:var(--ink);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{position:fixed;inset:0;background:rgba(4,18,42,.5);opacity:0;visibility:hidden;z-index:80;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;overflow:auto;background:#fff;z-index:90;transition:right .25s;box-shadow:-12px 0 35px rgba(0,0,0,.18)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:14px}
    .drawer-close{border:0;background:transparent;font-size:28px;line-height:1;cursor:pointer;color:var(--ink)}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf1f7;background:transparent;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}
    .footer{margin-top:70px;background:#081d40;color:#dce8fa}
    .footer .container{padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:16px}
    .footer p{margin:0 0 9px;color:#b9c9df;font-size:13px}
    .footer a{display:block;margin:7px 0;color:#b9c9df;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-bottom{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.16);color:#9eb2ce;font-size:12px}
    .tag-index-page{padding:55px 0 10px}
    .tag-hero{text-align:center;margin-bottom:34px}
    .tag-hero .eyebrow{display:inline-block;padding:5px 12px;border-radius:20px;background:#e5eefb;color:var(--theme);font-size:12px;font-weight:700;letter-spacing:1px}
    .tag-hero h1{margin:14px 0 10px;font-size:clamp(30px,5vw,52px);line-height:1.15;color:#0d2548}
    .tag-hero p{max-width:680px;margin:0 auto;color:var(--muted);font-size:15px}
    .tag-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:var(--shadow)}
    .tag-panel-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px;padding-bottom:17px;border-bottom:1px solid var(--line)}
    .tag-panel h2{margin:0;font-size:22px}
    .tag-panel-head span{color:var(--muted);font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:13px 16px;padding:18px 8px 25px}
    .tag-cloud a{display:inline-flex;align-items:center;min-height:40px;padding:8px 16px;border:1px solid #d8e3f1;border-radius:999px;background:#f8fbff;color:#244368;font-size:14px;transition:.2s}
    .tag-cloud a:nth-child(3n){font-size:17px;color:var(--theme);font-weight:700}
    .tag-cloud a:nth-child(5n){font-size:19px;background:#eaf2ff}
    .tag-cloud a:hover{background:var(--theme);border-color:var(--theme);color:#fff;transform:translateY(-3px)}
    .tag-note{margin-top:12px;padding:16px 18px;border-left:4px solid var(--theme);background:#f2f6fc;color:#60708a;font-size:13px}
    @media(max-width:1050px){
      .nav-link{padding-left:8px;padding-right:8px}
      .logo{min-width:155px}
    }
    @media(max-width:820px){
      .topbar .container{display:block;padding:8px 0}
      .topbar .contact{display:block;margin-top:3px}
      .topbar a{margin:0 18px 0 0}
      .header-inner{min-height:68px}
      .main-nav{display:none}
      .header-btns{margin-left:auto}
      .hamburger{display:block}
      .mega-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:560px){
      .container{width:min(100% - 28px,1180px)}
      .account-link,.header-btns>a:first-child{display:none}
      .tag-index-page{padding-top:35px}
      .tag-panel{padding:20px 15px}
      .tag-panel-head{display:block}
      .tag-panel-head span{display:block;margin-top:7px}
      .tag-cloud{gap:10px}
      .tag-cloud a{padding:7px 12px;font-size:13px}
      .footer-grid{grid-template-columns:1fr}
      .footer .container{padding-top:35px}
    }