:root{
      --theme:#0B3D91;
      --theme-dark:#06285f;
      --theme-light:#eaf1ff;
      --accent:#f2b84b;
      --ink:#122033;
      --muted:#64748b;
      --line:#dce4ef;
      --surface:#ffffff;
      --soft:#f5f8fc;
      --success:#15805d;
      --shadow:0 18px 48px rgba(21,42,79,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#fff;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.7;
      overflow-wrap:anywhere;
    }
    body,button,input,textarea,select{font:inherit}
    img{display:block;max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    button{color:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      color:#dce8ff;
      background:#061a3c;
      border-bottom:1px solid rgba(255,255,255,.09);
      font-size:13px;
    }
    .topbar .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-links{display:flex;align-items:center;gap:22px}
    .topbar a{transition:color .2s ease}
    .topbar a:hover{color:#fff}

    .header{
      position:relative;
      z-index:50;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 18px rgba(20,42,78,.04);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      min-width:180px;
      display:flex;
      align-items:center;
      gap:11px;
      color:var(--theme-dark);
      font-size:20px;
      font-weight:800;
      letter-spacing:.01em;
    }
    .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:center;
    }
    .nav-link{
      height:100%;
      display:flex;
      align-items:center;
      gap:6px;
      padding:0 13px;
      color:#26364d;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
      transition:color .2s ease,background .2s ease;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{
      color:var(--theme);
      background:var(--theme-light);
    }
    .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);
      transition:transform .2s ease;
    }
    .nav-item:hover .has-arrow::after,
    .nav-item:focus-within .has-arrow::after{
      margin-top:3px;
      transform:rotate(225deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      visibility:hidden;
      opacity:0;
      pointer-events:none;
      transform:translateY(8px);
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 16px 16px;
      box-shadow:0 24px 55px rgba(13,38,78,.16);
      transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
    }
    .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;
      transform:translateY(0);
    }
    .dropdown-panel{
      left:0;
      width:290px;
      padding:10px;
    }
    .dropdown-panel a{
      display:block;
      padding:11px 12px;
      border-radius:9px;
      color:#334155;
      font-size:14px;
    }
    .dropdown-panel a:hover{color:var(--theme);background:var(--theme-light)}
    .mega-menu{
      left:50%;
      width:min(760px,calc(100vw - 36px));
      padding:18px;
      transform:translate(-50%,8px);
    }
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      display:grid;
      grid-template-columns:42px minmax(0,1fr);
      align-items:center;
      column-gap:10px;
      padding:11px;
      border:1px solid #e7edf5;
      border-radius:12px;
      transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
    }
    .mega-card:hover{
      border-color:#aac1e8;
      box-shadow:0 9px 24px rgba(11,61,145,.10);
      transform:translateY(-2px);
    }
    .mega-card img{
      grid-row:1/4;
      width:42px;
      height:42px;
      object-fit:cover;
      border-radius:9px;
      background:var(--soft);
    }
    .mega-card strong{
      min-width:0;
      overflow:hidden;
      color:#17253a;
      font-size:14px;
      line-height:1.4;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card small{
      min-width:0;
      overflow:hidden;
      color:var(--muted);
      font-size:12px;
      line-height:1.4;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-footer{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:9px 14px;
      margin-top:14px;
      padding:12px 14px;
      color:var(--theme);
      background:var(--theme-light);
      border-radius:10px;
      font-size:13px;
      font-weight:700;
    }
    a.mega-footer:hover{background:#dce9ff}
    .mega-footer a{color:var(--theme)}
    .mega-footer a:hover{text-decoration:underline}

    .header-btns{
      display:flex;
      align-items:center;
      gap:10px;
      white-space:nowrap;
    }
    .member-link{
      color:var(--theme);
      font-size:14px;
      font-weight:700;
    }
    .open-account{
      padding:10px 16px;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      font-size:14px;
      font-weight:750;
      box-shadow:0 8px 18px rgba(11,61,145,.19);
      transition:background .2s ease,transform .2s ease;
    }
    .open-account:hover{background:var(--theme-dark);transform:translateY(-1px)}
    .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:10px;
      cursor:pointer;
    }
    .hamburger span{
      width:19px;
      height:2px;
      background:var(--ink);
      border-radius:2px;
      transition:transform .2s ease,opacity .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:98;
      visibility:hidden;
      opacity:0;
      background:rgba(2,12,29,.64);
      backdrop-filter:blur(3px);
      transition:opacity .25s ease,visibility .25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:99;
      width:min(390px,88vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-22px 0 50px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px 18px;
      color:#fff;
      background:var(--theme-dark);
    }
    .drawer-head strong{margin-right:auto}
    .drawer-head a{
      padding:7px 12px;
      color:var(--theme-dark);
      background:#fff;
      border-radius:8px;
      font-size:13px;
      font-weight:750;
    }
    .drawer-close{
      width:36px;
      height:36px;
      padding:0;
      color:#fff;
      background:transparent;
      border:1px solid rgba(255,255,255,.35);
      border-radius:9px;
      font-size:26px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:14px}
    .drawer-link,.drawer-toggle{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:13px 12px;
      color:#1e2d43;
      background:transparent;
      border:0;
      border-bottom:1px solid #e9eef5;
      font-weight:700;
      text-align:left;
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      color:var(--theme);
      font-size:20px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      display:none;
      margin:4px 0 8px;
      padding:6px;
      background:var(--soft);
      border-radius:10px;
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:9px 12px;
      color:#536176;
      border-radius:7px;
      font-size:14px;
    }
    .drawer-submenu a:hover{color:var(--theme);background:#fff}

    .tool-detail-page{
      min-width:0;
      background:
        radial-gradient(circle at 85% 3%,rgba(11,61,145,.11),transparent 28rem),
        linear-gradient(180deg,#f7faff 0,#fff 540px);
    }
    .tool-detail-page .tool-breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      padding-top:24px;
      color:var(--muted);
      font-size:14px;
    }
    .tool-detail-page .tool-breadcrumb a{color:var(--theme);font-weight:700}
    .tool-detail-page .tool-breadcrumb span:not(:last-child){color:#9aa8ba}
    .tool-detail-page .tool-intro{
      position:relative;
      overflow:hidden;
      margin-top:20px;
      padding:40px;
      color:#fff;
      background:linear-gradient(135deg,var(--theme-dark),var(--theme) 62%,#1e64c7);
      border-radius:24px;
      box-shadow:0 24px 55px rgba(11,61,145,.22);
    }
    .tool-detail-page .tool-intro::before,
    .tool-detail-page .tool-intro::after{
      content:"";
      position:absolute;
      border:1px solid rgba(255,255,255,.14);
      border-radius:50%;
    }
    .tool-detail-page .tool-intro::before{
      top:-130px;
      right:-60px;
      width:340px;
      height:340px;
    }
    .tool-detail-page .tool-intro::after{
      right:160px;
      bottom:-170px;
      width:280px;
      height:280px;
    }
    .tool-detail-page .tool-kicker{
      position:relative;
      z-index:1;
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:16px;
      padding:6px 11px;
      color:#fff3cf;
      background:rgba(255,255,255,.11);
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      font-size:13px;
      font-weight:750;
    }
    .tool-detail-page .tool-kicker::before{
      content:"";
      width:7px;
      height:7px;
      background:var(--accent);
      border-radius:50%;
      box-shadow:0 0 0 5px rgba(242,184,75,.16);
    }
    .tool-detail-page .tool-heading{
      position:relative;
      z-index:1;
      display:flex;
      align-items:flex-start;
      gap:22px;
    }
    .tool-detail-page .tool-icon{
      width:82px;
      height:82px;
      flex:0 0 82px;
      padding:13px;
      object-fit:contain;
      background:#fff;
      border:1px solid rgba(255,255,255,.45);
      border-radius:20px;
      box-shadow:0 15px 30px rgba(0,0,0,.15);
    }
    .tool-detail-page .tool-title-wrap{min-width:0}
    .tool-detail-page h1{
      margin:0;
      color:#fff;
      font-size:clamp(30px,4vw,48px);
      line-height:1.2;
      letter-spacing:-.025em;
    }
    .tool-detail-page .tool-summary{
      max-width:820px;
      margin:14px 0 0;
      color:#dce9ff;
      font-size:17px;
    }
    .tool-detail-page .tool-meta{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      gap:10px 24px;
      margin-top:25px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.18);
      color:#dce8fb;
      font-size:14px;
    }
    .tool-detail-page .tool-meta strong{color:#fff}

    .tool-detail-page .tool-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:28px;
      align-items:start;
      padding:34px 0 70px;
    }
    .tool-detail-page .tool-primary,
    .tool-detail-page .side-card{
      min-width:0;
      background:var(--surface);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .tool-detail-page .tool-primary{overflow:hidden}
    .tool-detail-page .content-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:22px 28px;
      background:#fbfcfe;
      border-bottom:1px solid var(--line);
    }
    .tool-detail-page .content-head h2{
      margin:0;
      font-size:21px;
      line-height:1.35;
    }
    .tool-detail-page .status{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--success);
      font-size:13px;
      font-weight:750;
      white-space:nowrap;
    }
    .tool-detail-page .status::before{
      content:"";
      width:8px;
      height:8px;
      background:#20b17a;
      border-radius:50%;
      box-shadow:0 0 0 5px rgba(32,177,122,.12);
    }
    .tool-detail-page .tool-content{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      padding:30px;
      color:#334155;
      font-size:16px;
    }
    .tool-detail-page .tool-content>:first-child{margin-top:0}
    .tool-detail-page .tool-content>:last-child{margin-bottom:0}
    .tool-detail-page .tool-content h2,
    .tool-detail-page .tool-content h3,
    .tool-detail-page .tool-content h4{
      margin:1.6em 0 .65em;
      color:#15243a;
      line-height:1.35;
    }
    .tool-detail-page .tool-content h2{
      padding-left:13px;
      border-left:4px solid var(--theme);
      font-size:24px;
    }
    .tool-detail-page .tool-content h3{font-size:20px}
    .tool-detail-page .tool-content p{margin:0 0 1.1em}
    .tool-detail-page .tool-content a{color:var(--theme);text-decoration:underline}
    .tool-detail-page .tool-content img{
      max-width:100%;
      height:auto;
      margin:22px 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:10px 12px;
      border:1px solid var(--line);
      text-align:left;
    }
    .tool-detail-page .tool-content blockquote{
      margin:22px 0;
      padding:18px 20px;
      color:#41516a;
      background:var(--theme-light);
      border-left:4px solid var(--theme);
      border-radius:0 10px 10px 0;
    }
    .tool-detail-page .tool-notice{
      margin:0 30px 30px;
      padding:17px 19px;
      color:#725318;
      background:#fff8e8;
      border:1px solid #f3deb0;
      border-radius:12px;
      font-size:14px;
    }
    .tool-detail-page .tool-notice strong{color:#5a400e}

    .tool-detail-page .tool-sidebar{
      min-width:0;
      display:grid;
      gap:20px;
      position:sticky;
      top:20px;
    }
    .tool-detail-page .side-card{padding:22px}
    .tool-detail-page .side-card h2{
      margin:0 0 16px;
      padding-bottom:13px;
      border-bottom:1px solid var(--line);
      font-size:19px;
    }
    .tool-detail-page .quick-list{
      display:grid;
      gap:11px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .tool-detail-page .quick-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:#4a5a70;
      font-size:14px;
    }
    .tool-detail-page .quick-list li::before{
      content:"✓";
      width:20px;
      height:20px;
      flex:0 0 20px;
      display:grid;
      place-items:center;
      margin-top:2px;
      color:var(--theme);
      background:var(--theme-light);
      border-radius:50%;
      font-size:12px;
      font-weight:900;
    }
    .tool-detail-page .tool-action{
      display:block;
      margin-top:18px;
      padding:12px 16px;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      font-weight:750;
      text-align:center;
      transition:background .2s ease,transform .2s ease;
    }
    .tool-detail-page .tool-action:hover{background:var(--theme-dark);transform:translateY(-1px)}
    .tool-detail-page .related-list{display:grid;gap:10px}
    .tool-detail-page .related-tool{
      display:grid;
      grid-template-columns:46px minmax(0,1fr);
      gap:11px;
      align-items:center;
      padding:11px;
      border:1px solid #e6ecf4;
      border-radius:11px;
      transition:border-color .2s ease,background .2s ease;
    }
    .tool-detail-page .related-tool:hover{
      background:var(--theme-light);
      border-color:#b5c8e8;
    }
    .tool-detail-page .related-tool img{
      width:46px;
      height:46px;
      padding:7px;
      object-fit:contain;
      background:#f4f7fb;
      border-radius:10px;
    }
    .tool-detail-page .related-tool div{min-width:0}
    .tool-detail-page .related-tool strong{
      display:block;
      overflow:hidden;
      color:#1b2a40;
      font-size:14px;
      line-height:1.45;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .tool-detail-page .related-tool p{
      display:-webkit-box;
      overflow:hidden;
      margin:3px 0 0;
      color:var(--muted);
      font-size:12px;
      line-height:1.5;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }

    .footer{
      color:#c6d2e3;
      background:#07182f;
      border-top:4px solid var(--theme);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr repeat(3,1fr);
      gap:42px;
      padding:54px 0 38px;
    }
    .footer-brand strong{
      display:block;
      margin-bottom:14px;
      color:#fff;
      font-size:22px;
    }
    .footer p{margin:6px 0;color:#aebcd0;font-size:14px}
    .footer h3{
      margin:0 0 15px;
      color:#fff;
      font-size:16px;
    }
    .footer-grid>div:not(.footer-brand)>a{
      display:block;
      margin:8px 0;
      color:#b8c6d9;
      font-size:14px;
      transition:color .2s ease,transform .2s ease;
    }
    .footer-grid>div:not(.footer-brand)>a:hover{
      color:#fff;
      transform:translateX(3px);
    }
    .footer-bottom{
      min-height:68px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:16px 0;
      color:#91a3ba;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:13px;
    }

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-inner{min-height:70px}
      .header-btns{margin-left:auto}
      .tool-detail-page .tool-layout{grid-template-columns:minmax(0,1fr) 300px}
    }
    @media (max-width:820px){
      .topbar .container{padding:8px 0;align-items:flex-start}
      .topbar-links{gap:7px;flex-direction:column;align-items:flex-end}
      .tool-detail-page .tool-intro{padding:30px}
      .tool-detail-page .tool-heading{align-items:center}
      .tool-detail-page .tool-layout{grid-template-columns:1fr}
      .tool-detail-page .tool-sidebar{position:static}
      .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
    }
    @media (max-width:600px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{display:block}
      .topbar-links{display:none}
      .logo{min-width:0;font-size:17px}
      .logo img{width:38px;height:38px}
      .member-link{display:none}
      .open-account{padding:9px 12px}
      .tool-detail-page .tool-breadcrumb{padding-top:16px}
      .tool-detail-page .tool-intro{margin-top:14px;padding:24px 20px;border-radius:18px}
      .tool-detail-page .tool-heading{display:block}
      .tool-detail-page .tool-icon{width:66px;height:66px;margin-bottom:17px}
      .tool-detail-page h1{font-size:29px}
      .tool-detail-page .tool-summary{font-size:15px}
      .tool-detail-page .tool-meta{display:grid;gap:5px;margin-top:19px}
      .tool-detail-page .tool-layout{padding:22px 0 50px}
      .tool-detail-page .content-head{align-items:flex-start;padding:18px}
      .tool-detail-page .tool-content{padding:21px 18px}
      .tool-detail-page .tool-notice{margin:0 18px 20px}
      .tool-detail-page .side-card{padding:18px}
      .footer-grid{grid-template-columns:1fr;padding:42px 0 28px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }
    @media (max-width:410px){
      .open-account{display:none}
      .header-inner{gap:12px}
    }