:root{
      --brand:#0B3D91;
      --template-theme:{主题色};
      --brand-dark:#06275f;
      --brand-soft:#eaf1fc;
      --brand-pale:#f4f7fc;
      --accent:#c83232;
      --ink:#172033;
      --muted:#667085;
      --line:#e1e6ef;
      --surface:#ffffff;
      --page:#f5f7fa;
      --success:#157347;
      --shadow:0 16px 40px rgba(13,31,61,.1);
      --radius:18px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--page);
      font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.65;
      -webkit-font-smoothing:antialiased;
    }
    body.drawer-locked{overflow:hidden}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{color:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .skip-link{
      position:fixed;
      top:10px;
      left:10px;
      z-index:9999;
      padding:10px 16px;
      color:#fff;
      background:var(--brand);
      border-radius:8px;
      transform:translateY(-160%);
      transition:transform .2s ease;
    }
    .skip-link:focus{transform:translateY(0)}
    .topbar{
      color:#eaf1ff;
      background:#071b3d;
      font-size:13px;
    }
    .topbar-inner{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-contact{display:flex;align-items:center;gap:20px}
    .topbar a:hover,.topbar a:focus{color:#fff;text-decoration:underline}
    .header{
      position:relative;
      z-index:100;
      background:#fff;
      border-bottom:1px solid var(--line);
      box-shadow:0 3px 15px rgba(22,34,55,.04);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .logo{
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--brand-dark);
      font-size:20px;
      font-weight:800;
      letter-spacing:.02em;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{margin-left:auto;align-self:stretch}
    .nav-list{
      height:100%;
      display:flex;
      align-items:stretch;
      gap:2px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .nav-item{position:relative;display:flex;align-items:stretch}
    .nav-link{
      display:flex;
      align-items:center;
      gap:6px;
      padding:0 13px;
      color:#283548;
      font-size:15px;
      font-weight:700;
      white-space:nowrap;
      border-bottom:3px solid transparent;
      transition:.2s ease;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{
      color:var(--brand);
      background:var(--brand-pale);
      border-bottom-color:var(--brand);
    }
    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      margin-top:-4px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      left:0;
      z-index:120;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      pointer-events:none;
      transition:opacity .18s ease,transform .18s ease,visibility .18s;
      background:#fff;
      border:1px solid var(--line);
      border-top:3px solid var(--brand);
      box-shadow:var(--shadow);
    }
    .dropdown-panel::before,.mega-menu::before{
      content:"";
      position:absolute;
      right:0;
      bottom:100%;
      left:0;
      height:8px;
    }
    .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:translateY(0);
      pointer-events:auto;
    }
    .dropdown-panel{
      width:280px;
      padding:10px;
      border-radius:0 0 14px 14px;
    }
    .dropdown-panel>a{
      display:block;
      padding:10px 12px;
      color:#344054;
      border-radius:8px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .dropdown-panel>a:hover,.dropdown-panel>a:focus{
      color:var(--brand);
      background:var(--brand-pale);
    }
    .dropdown-panel .dropdown-more{
      margin-top:6px;
      color:#fff;
      text-align:center;
      font-weight:700;
      background:var(--brand);
    }
    .mega-menu{
      width:760px;
      border-radius:0 0 18px 18px;
    }
    .mega-wide{width:min(920px,calc(100vw - 40px))}
    .nav-item:nth-last-child(-n+3)>.mega-menu{right:0;left:auto}
    .mega-inner{padding:22px}
    .mega-heading{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:15px;
      padding-bottom:12px;
      border-bottom:1px solid var(--line);
    }
    .mega-heading strong{color:var(--brand-dark);font-size:18px}
    .mega-heading span{color:var(--muted);font-size:13px}
    .mega-categories{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:15px;
    }
    .mega-categories a{
      padding:6px 11px;
      color:var(--brand);
      font-size:13px;
      background:var(--brand-soft);
      border-radius:999px;
    }
    .mega-categories a:hover,.mega-categories a:focus{color:#fff;background:var(--brand)}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }
    .mega-card{
      min-width:0;
      display:grid;
      grid-template-columns:42px minmax(0,1fr);
      align-items:center;
      gap:10px;
      padding:12px;
      border:1px solid var(--line);
      border-radius:12px;
      transition:.2s ease;
    }
    .mega-card:hover,.mega-card:focus{
      border-color:#b8c9e9;
      transform:translateY(-2px);
      box-shadow:0 8px 20px rgba(11,61,145,.09);
    }
    .mega-card img{
      grid-row:1/4;
      width:42px;
      height:42px;
      object-fit:cover;
      border-radius:9px;
      background:#edf1f7;
    }
    .mega-card strong{
      min-width:0;
      color:#263247;
      font-size:14px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card p{
      display:-webkit-box;
      margin:0;
      color:var(--muted);
      font-size:12px;
      line-height:1.5;
      overflow:hidden;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .mega-meta{
      grid-column:2;
      display:flex;
      flex-wrap:wrap;
      gap:4px 9px;
      color:var(--muted);
      font-size:11px;
    }
    .mega-video,.mega-product{display:block}
    .mega-video img,.mega-product img{
      width:100%;
      height:88px;
      margin-bottom:9px;
      object-fit:cover;
    }
    .mega-video .mega-meta,.mega-product .mega-meta{margin-top:7px}
    .mega-footer{
      display:block;
      padding:12px 20px;
      color:#fff;
      text-align:center;
      font-weight:700;
      background:var(--brand);
      border-radius:0 0 16px 16px;
    }
    .mega-footer:hover,.mega-footer:focus{background:var(--brand-dark)}
    .header-btns{
      flex:0 0 auto;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .header-btns>a,.header-btns>span,.header-btns>button:not(.hamburger){
      white-space:nowrap;
    }
    .open-account{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:40px;
      padding:0 17px;
      color:#fff;
      font-weight:800;
      background:var(--brand);
      border-radius:9px;
      box-shadow:0 7px 18px rgba(11,61,145,.2);
    }
    .open-account:hover,.open-account:focus{background:var(--brand-dark)}
    .hamburger{
      width:42px;
      height:42px;
      display:none;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      padding:0;
      background:#fff;
      border:1px solid var(--line);
      border-radius:9px;
      cursor:pointer;
    }
    .hamburger span{
      width:20px;
      height:2px;
      background:var(--ink);
      transition:.2s ease;
    }
    .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;
      z-index:290;
      visibility:hidden;
      opacity:0;
      background:rgba(7,18,38,.58);
      transition:.25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:300;
      width:min(390px,90vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 50px rgba(5,18,41,.2);
      transform:translateX(105%);
      transition:transform .25s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      display:flex;
      align-items:center;
      gap:10px;
      padding:12px 18px;
      color:#fff;
      background:var(--brand-dark);
    }
    .drawer-head>a{
      padding:7px 11px;
      font-weight:700;
      border:1px solid rgba(255,255,255,.35);
      border-radius:8px;
    }
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      padding:0;
      color:#fff;
      font-size:30px;
      line-height:1;
      background:transparent;
      border:0;
      cursor:pointer;
    }
    .drawer-menu{padding:14px 18px 30px}
    .drawer-link,.drawer-toggle{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:13px 4px;
      color:#24324a;
      font-weight:800;
      text-align:left;
      background:transparent;
      border:0;
      border-bottom:1px solid var(--line);
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      color:var(--brand);
      font-size:21px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:7px 0 9px 13px;
      border-left:2px solid var(--brand-soft);
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:9px 10px;
      color:var(--muted);
      font-size:14px;
      border-radius:7px;
    }
    .drawer-submenu a:hover,.drawer-submenu a:focus{color:var(--brand);background:var(--brand-pale)}

    .tool-detail-page{min-width:0}
    .tool-detail-page .detail-hero{
      position:relative;
      overflow:hidden;
      color:#fff;
      background:
        radial-gradient(circle at 12% 10%,rgba(255,255,255,.15),transparent 28%),
        radial-gradient(circle at 88% 70%,rgba(91,150,255,.3),transparent 26%),
        linear-gradient(135deg,var(--brand-dark),var(--brand) 62%,#245caf);
    }
    .tool-detail-page .detail-hero::after{
      content:"";
      position:absolute;
      right:-90px;
      bottom:-140px;
      width:390px;
      height:390px;
      border:1px solid rgba(255,255,255,.15);
      border-radius:50%;
      box-shadow:0 0 0 55px rgba(255,255,255,.04),0 0 0 110px rgba(255,255,255,.025);
    }
    .tool-detail-page .detail-hero-inner{
      position:relative;
      z-index:1;
      padding:56px 0 50px;
    }
    .tool-detail-page .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-bottom:25px;
      color:#d9e6ff;
      font-size:14px;
    }
    .tool-detail-page .breadcrumb a:hover,.tool-detail-page .breadcrumb a:focus{color:#fff;text-decoration:underline}
    .tool-detail-page .tool-heading{
      display:flex;
      align-items:center;
      gap:22px;
      max-width:900px;
    }
    .tool-detail-page .tool-heading-icon{
      width:82px;
      height:82px;
      flex:0 0 82px;
      display:grid;
      place-items:center;
      padding:14px;
      background:#fff;
      border:1px solid rgba(255,255,255,.55);
      border-radius:20px;
      box-shadow:0 14px 30px rgba(0,0,0,.16);
    }
    .tool-detail-page .tool-heading-icon img{
      width:100%;
      height:100%;
      object-fit:contain;
    }
    .tool-detail-page .eyebrow{
      display:inline-flex;
      margin-bottom:8px;
      padding:5px 10px;
      color:#fff;
      font-size:13px;
      font-weight:800;
      background:rgba(255,255,255,.13);
      border:1px solid rgba(255,255,255,.22);
      border-radius:999px;
    }
    .tool-detail-page h1{
      margin:0;
      color:#fff;
      font-size:clamp(31px,5vw,52px);
      line-height:1.16;
      letter-spacing:-.03em;
    }
    .tool-detail-page .hero-summary{
      max-width:780px;
      margin:14px 0 0;
      color:#e5edfc;
      font-size:17px;
    }
    .tool-detail-page .tool-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:23px;
    }
    .tool-detail-page .tool-meta span{
      padding:7px 11px;
      color:#edf4ff;
      font-size:13px;
      background:rgba(5,28,70,.3);
      border:1px solid rgba(255,255,255,.16);
      border-radius:8px;
    }
    .tool-detail-page .detail-layout{
      min-width:0;
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      align-items:start;
      gap:28px;
      padding-top:34px;
      padding-bottom:70px;
    }
    .tool-detail-page .tool-main,
    .tool-detail-page .tool-sidebar{min-width:0}
    .tool-detail-page .content-card,
    .tool-detail-page .sidebar-card{
      min-width:0;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 10px 28px rgba(16,34,63,.06);
    }
    .tool-detail-page .content-card{padding:clamp(22px,4vw,42px)}
    .tool-detail-page .content-intro{
      margin-bottom:30px;
      padding:18px 20px;
      color:#344054;
      font-size:16px;
      background:var(--brand-pale);
      border-left:4px solid var(--brand);
      border-radius:0 12px 12px 0;
    }
    .tool-detail-page .tool-content{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      color:#344054;
      font-size:16px;
      line-height:1.85;
    }
    .tool-detail-page .tool-content h2,
    .tool-detail-page .tool-content h3,
    .tool-detail-page .tool-content h4{
      color:#14213a;
      line-height:1.35;
    }
    .tool-detail-page .tool-content h2{
      margin:34px 0 14px;
      padding-bottom:10px;
      font-size:25px;
      border-bottom:1px solid var(--line);
    }
    .tool-detail-page .tool-content h3{margin:28px 0 12px;font-size:20px}
    .tool-detail-page .tool-content p{margin:0 0 18px}
    .tool-detail-page .tool-content a{color:var(--brand);text-decoration:underline}
    .tool-detail-page .tool-content img,
    .tool-detail-page .tool-content video,
    .tool-detail-page .tool-content iframe{
      max-width:100%;
      height:auto;
      border-radius:12px;
    }
    .tool-detail-page .tool-content table{
      width:100%;
      max-width:100%;
      border-collapse:collapse;
    }
    .tool-detail-page .tool-content th,
    .tool-detail-page .tool-content td{
      padding:11px 13px;
      border:1px solid var(--line);
    }
    .tool-detail-page .tool-content blockquote{
      margin:24px 0;
      padding:16px 20px;
      color:#344054;
      background:#f8fafc;
      border-left:4px solid #91add9;
    }
    .tool-detail-page .notice{
      display:flex;
      gap:12px;
      margin-top:32px;
      padding:17px 19px;
      color:#5d4831;
      background:#fff9eb;
      border:1px solid #f0dfb8;
      border-radius:12px;
    }
    .tool-detail-page .notice strong{flex:0 0 auto;color:#8b5b14}
    .tool-detail-page .sidebar-card{
      overflow:hidden;
      margin-bottom:20px;
    }
    .tool-detail-page .sidebar-title{
      margin:0;
      padding:17px 19px;
      color:#16243b;
      font-size:18px;
      border-bottom:1px solid var(--line);
    }
    .tool-detail-page .quick-actions{padding:17px}
    .tool-detail-page .primary-action,
    .tool-detail-page .secondary-action{
      width:100%;
      min-height:45px;
      display:flex;
      align-items:center;
      justify-content:center;
      margin-bottom:10px;
      padding:10px 16px;
      font-weight:800;
      border-radius:9px;
    }
    .tool-detail-page .primary-action{color:#fff;background:var(--brand)}
    .tool-detail-page .primary-action:hover,.tool-detail-page .primary-action:focus{background:var(--brand-dark)}
    .tool-detail-page .secondary-action{
      color:var(--brand);
      background:var(--brand-pale);
      border:1px solid #c8d7ef;
    }
    .tool-detail-page .quick-note{margin:8px 0 0;color:var(--muted);font-size:13px}
    .tool-detail-page .related-tools{padding:8px 16px 16px}
    .tool-detail-page .related-tool{
      display:grid;
      grid-template-columns:48px minmax(0,1fr);
      gap:12px;
      align-items:center;
      padding:13px 3px;
      border-bottom:1px solid var(--line);
    }
    .tool-detail-page .related-tool:last-child{border-bottom:0}
    .tool-detail-page .related-tool img{
      width:48px;
      height:48px;
      object-fit:contain;
      padding:6px;
      background:var(--brand-pale);
      border-radius:10px;
    }
    .tool-detail-page .related-tool strong{
      display:block;
      color:#24324a;
      font-size:15px;
      line-height:1.4;
    }
    .tool-detail-page .related-tool p{
      display:-webkit-box;
      margin:4px 0 0;
      color:var(--muted);
      font-size:12px;
      line-height:1.5;
      overflow:hidden;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .tool-detail-page .related-tool:hover strong,
    .tool-detail-page .related-tool:focus strong{color:var(--brand)}
    .tool-detail-page .data-list{padding:12px 18px 17px}
    .tool-detail-page .data-row{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:15px;
      padding:9px 0;
      color:var(--muted);
      font-size:13px;
      border-bottom:1px dashed var(--line);
    }
    .tool-detail-page .data-row:last-child{border-bottom:0}
    .tool-detail-page .data-row strong{color:#344054;text-align:right}

    .footer{
      color:#cbd5e5;
      background:#081a37;
      border-top:4px solid var(--brand);
    }
    .footer-main{
      display:grid;
      grid-template-columns:1.4fr 1fr 1fr 1.1fr;
      gap:45px;
      padding-top:55px;
      padding-bottom:43px;
    }
    .footer .logo{color:#fff}
    .footer-brand p{max-width:360px;margin:18px 0 0;color:#aab8cc;font-size:14px}
    .footer h2{margin:3px 0 16px;color:#fff;font-size:16px}
    .footer-links,.footer-contact{display:flex;flex-direction:column;align-items:flex-start;gap:9px}
    .footer-links a,.footer-contact a{color:#b9c6d9;font-size:14px}
    .footer-links a:hover,.footer-contact a:hover,
    .footer-links a:focus,.footer-contact a:focus{color:#fff;text-decoration:underline}
    .social-link{margin-top:5px;color:#fff}
    .footer-bottom{
      min-height:62px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#91a2ba;
      font-size:13px;
      border-top:1px solid rgba(255,255,255,.1);
    }
    .footer-bottom-links{display:flex;gap:18px}
    .footer-bottom a:hover,.footer-bottom a:focus{color:#fff}

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-inner{min-height:70px}
      .header-btns{margin-left:auto}
      .tool-detail-page .detail-layout{grid-template-columns:minmax(0,1fr) 300px}
    }
    @media (max-width:820px){
      .topbar-inner{padding:7px 0}
      .topbar-contact{gap:11px}
      .tool-detail-page .detail-layout{grid-template-columns:1fr}
      .tool-detail-page .tool-sidebar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
      .tool-detail-page .sidebar-card{margin-bottom:0}
      .tool-detail-page .sidebar-card:nth-child(2){grid-row:span 2}
      .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:35px}
    }
    @media (max-width:620px){
      .container{width:min(100% - 28px,var(--container))}
      .topbar-inner{align-items:flex-start;flex-direction:column;gap:3px}
      .topbar-contact{flex-wrap:wrap}
      .header-btns>*:not(.hamburger):not(.open-account){display:none}
      .open-account{min-height:38px;padding:0 13px}
      .logo span{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      .tool-detail-page .detail-hero-inner{padding:36px 0 38px}
      .tool-detail-page .tool-heading{align-items:flex-start;gap:15px}
      .tool-detail-page .tool-heading-icon{width:62px;height:62px;flex-basis:62px;padding:10px;border-radius:14px}
      .tool-detail-page h1{font-size:29px}
      .tool-detail-page .hero-summary{font-size:15px}
      .tool-detail-page .detail-layout{padding-top:20px;padding-bottom:50px}
      .tool-detail-page .content-card{padding:20px 17px}
      .tool-detail-page .content-intro{padding:15px}
      .tool-detail-page .tool-sidebar{display:block}
      .tool-detail-page .sidebar-card{margin-bottom:18px}
      .footer-main{grid-template-columns:1fr;padding-top:40px}
      .footer-bottom{align-items:flex-start;flex-direction:column;padding-top:18px;padding-bottom:18px}
    }
    @media (max-width:420px){
      .header-inner{gap:10px}
      .logo img{width:37px;height:37px}
      .logo span{max-width:105px;font-size:17px}
      .open-account{display:none}
      .tool-detail-page .tool-heading{display:block}
      .tool-detail-page .tool-heading-icon{margin-bottom:16px}
      .tool-detail-page .tool-meta{gap:7px}
    }