:root{
      --primary:#0B3D91;
      --primary-dark:#06265f;
      --primary-light:#e9f1ff;
      --accent:#51e37d;
      --ink:#12213a;
      --muted:#64748b;
      --line:#dce5f2;
      --surface:#ffffff;
      --soft:#f4f7fb;
      --space:#07152d;
      --radius:18px;
      --shadow:0 16px 44px rgba(11,61,145,.12);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#fff;
      font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.65;
      -webkit-font-smoothing:antialiased;
    }
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      position:relative;
      z-index:120;
      color:#dbeafe;
      background:var(--space);
      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 strong{color:#fff}
    .topbar a{margin-left:20px;transition:color .2s ease}
    .topbar a:hover{color:var(--accent)}

    .header{
      position:sticky;
      top:0;
      z-index:110;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid rgba(11,61,145,.1);
      box-shadow:0 8px 24px rgba(15,23,42,.05);
      backdrop-filter:blur(14px);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .logo{
      min-width:max-content;
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--primary-dark);
      font-size:19px;
      font-weight:800;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{margin-left:auto;height:76px}
    .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{
      position:relative;
      display:flex;
      align-items:center;
      padding:0 11px;
      color:#263650;
      font-size:14px;
      font-weight:650;
      white-space:nowrap;
    }
    .nav-link:hover,
    .nav-item:focus-within>.nav-link{color:var(--primary)}
    .nav-link:after{
      position:absolute;
      right:11px;
      bottom:0;
      left:11px;
      height:3px;
      border-radius:3px 3px 0 0;
      background:var(--primary);
      content:"";
      transform:scaleX(0);
      transition:transform .2s ease;
    }
    .nav-link:hover:after,
    .nav-item:focus-within>.nav-link:after{transform:scaleX(1)}
    .nav-link.has-arrow{padding-right:25px}
    .nav-link.has-arrow:before{
      position:absolute;
      right:10px;
      top:50%;
      width:6px;
      height:6px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      content:"";
      transform:translateY(-65%) rotate(45deg);
    }
    .dropdown-panel,
    .mega-menu{
      position:absolute;
      top:100%;
      left:0;
      z-index:130;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      transition:opacity .18s ease,transform .18s ease,visibility .18s;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:0 24px 60px rgba(11,31,64,.17);
    }
    .dropdown-panel:before,
    .mega-menu:before{
      position:absolute;
      right:0;
      bottom:100%;
      left:0;
      height:10px;
      content:"";
    }
    .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);
    }
    .dropdown-panel{
      width:290px;
      padding:12px;
      border-radius:0 0 15px 15px;
    }
    .dropdown-panel a{
      display:block;
      padding:10px 12px;
      border-radius:9px;
      color:#334155;
      font-size:14px;
    }
    .dropdown-panel a:hover{color:var(--primary);background:var(--primary-light)}
    .dropdown-panel a:last-child{
      margin-top:7px;
      color:var(--primary);
      background:#f0f5ff;
      font-weight:700;
    }
    .mega-menu{
      left:50%;
      width:min(790px,86vw);
      padding:22px;
      border-radius:0 0 18px 18px;
      transform:translate(-50%,8px);
    }
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .nav-item:nth-last-child(-n+3) .mega-menu{
      right:-100px;
      left:auto;
      transform:translateY(8px);
    }
    .nav-item:nth-last-child(-n+3):hover>.mega-menu,
    .nav-item:nth-last-child(-n+3):focus-within>.mega-menu{transform:translateY(0)}
    .mega-title{
      margin:0 0 12px;
      color:#10213e;
      font-size:15px;
      font-weight:800;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      display:flex;
      align-items:center;
      gap:11px;
      padding:11px;
      border:1px solid #e5ebf4;
      border-radius:12px;
      transition:.2s ease;
    }
    .mega-card:hover{
      border-color:#adc8f5;
      background:#f5f8ff;
      transform:translateY(-2px);
    }
    .mega-card img{
      flex:0 0 42px;
      width:42px;
      height:42px;
      object-fit:cover;
      border-radius:10px;
      background:#edf3fc;
    }
    .mega-card>span{min-width:0}
    .mega-card b{
      display:block;
      overflow:hidden;
      color:#17243b;
      font-size:13px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card span span{
      display:block;
      overflow:hidden;
      color:var(--muted);
      font-size:11px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-links{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:8px;
    }
    .mega-links a{
      padding:9px 11px;
      color:#334155;
      background:#f5f7fb;
      border-radius:8px;
      font-size:13px;
      text-align:center;
    }
    .mega-links a:hover{color:var(--primary);background:var(--primary-light)}
    .mega-footer{
      display:block;
      margin:16px -22px -22px;
      padding:13px 22px;
      color:var(--primary);
      background:#f2f6fd;
      border-radius:0 0 18px 18px;
      font-size:13px;
      font-weight:800;
      text-align:right;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
      white-space:nowrap;
    }
    .header-btns>a{
      color:var(--primary);
      font-size:13px;
      font-weight:700;
    }
    .header-btns .account-btn{
      padding:9px 14px;
      color:#fff;
      background:var(--primary);
      border-radius:9px;
      box-shadow:0 8px 18px rgba(11,61,145,.2);
    }
    .header-btns .account-btn:hover{background:var(--primary-dark)}
    .hamburger{
      width:42px;
      height:42px;
      display:none;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      padding:0;
      border:1px solid var(--line);
      border-radius:10px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      width:20px;
      height:2px;
      background:var(--primary-dark);
      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:199;
      visibility:hidden;
      opacity:0;
      background:rgba(3,12,28,.62);
      transition:.25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:200;
      width:min(390px,90vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:68px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:12px 18px;
      color:#fff;
      background:var(--space);
    }
    .drawer-head span{margin-right:auto;font-weight:700}
    .drawer-head a{
      padding:7px 12px;
      color:#06240f;
      background:var(--accent);
      border-radius:8px;
      font-size:13px;
      font-weight:800;
    }
    .drawer-close{
      width:36px;
      height:36px;
      padding:0;
      color:#fff;
      background:transparent;
      border:1px solid rgba(255,255,255,.3);
      border-radius:8px;
      cursor:pointer;
      font-size:27px;
      line-height:1;
    }
    .drawer-menu{padding:12px 18px 28px}
    .drawer-link,
    .drawer-toggle{
      width:100%;
      display:block;
      padding:13px 4px;
      color:#1e2d46;
      background:transparent;
      border:0;
      border-bottom:1px solid #e8edf5;
      cursor:pointer;
      font-weight:700;
      text-align:left;
    }
    .drawer-toggle{position:relative}
    .drawer-toggle:after{
      position:absolute;
      right:6px;
      content:"+";
      color:var(--primary);
      font-size:20px;
    }
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:5px 0 8px 14px;
      border-bottom:1px solid #e8edf5;
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:9px 8px;
      color:#5b687c;
      font-size:13px;
      border-radius:7px;
    }
    .drawer-submenu a:hover{color:var(--primary);background:var(--primary-light)}

    .tools-page{background:var(--soft)}
    .tools-page .tools-intro{
      position:relative;
      overflow:hidden;
      padding:76px 0 132px;
      color:#fff;
      background:
        radial-gradient(circle at 20% 20%,rgba(29,111,255,.32),transparent 32%),
        radial-gradient(circle at 84% 10%,rgba(81,227,125,.16),transparent 26%),
        linear-gradient(145deg,#06142d 0%,#0a2a65 55%,#0b3d91 100%);
    }
    .tools-page .tools-intro:before{
      position:absolute;
      inset:0;
      content:"";
      opacity:.22;
      background-image:
        linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
      background-size:44px 44px;
      mask-image:linear-gradient(to bottom,#000,transparent);
    }
    .tools-page .intro-content{
      position:relative;
      z-index:1;
      max-width:820px;
      margin:0 auto;
      text-align:center;
    }
    .tools-page .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:15px;
      padding:6px 12px;
      color:#b8ffca;
      background:rgba(81,227,125,.1);
      border:1px solid rgba(81,227,125,.35);
      border-radius:999px;
      font-size:13px;
      font-weight:800;
    }
    .tools-page .eyebrow:before{
      width:7px;
      height:7px;
      content:"";
      background:var(--accent);
      border-radius:50%;
      box-shadow:0 0 14px var(--accent);
    }
    .tools-page h1{
      margin:0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.15;
      letter-spacing:-1px;
    }
    .tools-page .intro-content>p{
      max-width:700px;
      margin:20px auto 0;
      color:#c9d8ef;
      font-size:17px;
    }
    .tools-page .tool-search{
      max-width:700px;
      display:flex;
      gap:8px;
      margin:30px auto 0;
      padding:7px;
      background:rgba(255,255,255,.98);
      border-radius:15px;
      box-shadow:0 20px 45px rgba(0,0,0,.2);
    }
    .tools-page .tool-search input{
      min-width:0;
      flex:1;
      padding:11px 14px;
      color:#17243b;
      background:transparent;
      border:0;
      outline:0;
    }
    .tools-page .tool-search button{
      padding:11px 22px;
      color:#fff;
      background:var(--primary);
      border:0;
      border-radius:10px;
      cursor:pointer;
      font-weight:800;
    }
    .tools-page .tool-search button:hover{background:var(--primary-dark)}
    .tools-page .quick-tags{
      display:flex;
      flex-wrap:wrap;
      justify-content:center;
      gap:9px;
      margin-top:19px;
    }
    .tools-page .quick-tags a{
      padding:7px 12px;
      color:#d6e5fb;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.16);
      border-radius:999px;
      font-size:13px;
    }
    .tools-page .quick-tags a:hover{
      color:#fff;
      border-color:var(--accent);
      background:rgba(81,227,125,.1);
    }
    .tools-page .summary-strip{
      position:relative;
      z-index:3;
      margin-top:-66px;
    }
    .tools-page .summary-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      overflow:hidden;
      background:#fff;
      border:1px solid rgba(11,61,145,.1);
      border-radius:20px;
      box-shadow:var(--shadow);
    }
    .tools-page .summary-item{
      padding:24px;
      border-right:1px solid var(--line);
    }
    .tools-page .summary-item:last-child{border-right:0}
    .tools-page .summary-item strong{
      display:block;
      color:var(--primary);
      font-size:23px;
      line-height:1.25;
    }
    .tools-page .summary-item span{color:var(--muted);font-size:13px}

    .tools-page .tools-section{padding:74px 0}
    .tools-page .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:28px;
    }
    .tools-page .section-head small{
      display:block;
      margin-bottom:6px;
      color:var(--primary);
      font-weight:800;
      letter-spacing:1px;
    }
    .tools-page .section-head h2{
      margin:0;
      color:#10213e;
      font-size:32px;
      line-height:1.25;
    }
    .tools-page .section-head p{
      max-width:520px;
      margin:0;
      color:var(--muted);
      text-align:right;
    }
    .tools-page .tool-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .tools-page .tool-card{
      min-width:0;
      display:flex;
      flex-direction:column;
      min-height:290px;
      padding:25px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 8px 24px rgba(15,40,80,.05);
      transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
    }
    .tools-page .tool-card:hover{
      border-color:#99b9ef;
      box-shadow:0 20px 42px rgba(11,61,145,.13);
      transform:translateY(-5px);
    }
    .tools-page .tool-card-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:15px;
    }
    .tools-page .tool-icon{
      width:58px;
      height:58px;
      display:flex;
      align-items:center;
      justify-content:center;
      padding:10px;
      overflow:hidden;
      background:linear-gradient(145deg,#e9f1ff,#f7faff);
      border:1px solid #d8e5f8;
      border-radius:15px;
    }
    .tools-page .tool-icon img{
      width:100%;
      height:100%;
      object-fit:contain;
    }
    .tools-page .tool-status{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:5px 9px;
      color:#24713b;
      background:#e9fbed;
      border-radius:999px;
      font-size:11px;
      font-weight:800;
    }
    .tools-page .tool-status:before{
      width:6px;
      height:6px;
      content:"";
      background:#35bc5b;
      border-radius:50%;
    }
    .tools-page .tool-card h3{
      margin:20px 0 8px;
      color:#12213a;
      font-size:20px;
      line-height:1.35;
    }
    .tools-page .tool-card p{
      margin:0 0 22px;
      color:var(--muted);
      font-size:14px;
    }
    .tools-page .tool-card .tool-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:auto;
      padding-top:15px;
      color:var(--primary);
      border-top:1px solid #edf1f6;
      font-size:14px;
      font-weight:800;
    }
    .tools-page .tool-card .tool-link span:last-child{
      width:30px;
      height:30px;
      display:grid;
      place-items:center;
      color:#fff;
      background:var(--primary);
      border-radius:50%;
      transition:transform .2s ease;
    }
    .tools-page .tool-card:hover .tool-link span:last-child{transform:translateX(3px)}

    .tools-page .method-section{
      padding:76px 0;
      background:#fff;
      border-top:1px solid #e8edf5;
      border-bottom:1px solid #e8edf5;
    }
    .tools-page .method-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
      counter-reset:steps;
    }
    .tools-page .method-card{
      position:relative;
      padding:28px;
      overflow:hidden;
      background:#f7f9fd;
      border:1px solid var(--line);
      border-radius:18px;
      counter-increment:steps;
    }
    .tools-page .method-card:after{
      position:absolute;
      right:16px;
      top:2px;
      color:rgba(11,61,145,.07);
      content:"0" counter(steps);
      font-size:74px;
      font-weight:900;
      line-height:1;
    }
    .tools-page .method-number{
      width:38px;
      height:38px;
      display:grid;
      place-items:center;
      color:#fff;
      background:var(--primary);
      border-radius:10px;
      font-weight:900;
    }
    .tools-page .method-card h3{
      position:relative;
      z-index:1;
      margin:18px 0 8px;
      font-size:19px;
    }
    .tools-page .method-card p{
      position:relative;
      z-index:1;
      margin:0;
      color:var(--muted);
      font-size:14px;
    }

    .tools-page .notice-section{padding:74px 0}
    .tools-page .notice-panel{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:34px;
      align-items:center;
      padding:38px;
      color:#fff;
      background:linear-gradient(135deg,#07152d,#0b3d91);
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .tools-page .notice-panel h2{
      margin:0 0 12px;
      font-size:30px;
      line-height:1.3;
    }
    .tools-page .notice-panel p{margin:0;color:#c8d7ed}
    .tools-page .notice-list{
      display:grid;
      gap:10px;
      margin:20px 0 0;
      padding:0;
      list-style:none;
    }
    .tools-page .notice-list li{
      position:relative;
      padding-left:22px;
      color:#e6eefb;
      font-size:14px;
    }
    .tools-page .notice-list li:before{
      position:absolute;
      left:0;
      top:.55em;
      width:8px;
      height:8px;
      content:"";
      background:var(--accent);
      border-radius:50%;
      box-shadow:0 0 10px rgba(81,227,125,.7);
    }
    .tools-page .notice-action{
      padding:26px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      border-radius:18px;
      text-align:center;
    }
    .tools-page .notice-action strong{
      display:block;
      margin-bottom:6px;
      font-size:19px;
    }
    .tools-page .notice-action span{
      display:block;
      margin-bottom:18px;
      color:#c8d7ed;
      font-size:13px;
    }
    .tools-page .notice-action a{
      display:inline-block;
      padding:11px 20px;
      color:#06240f;
      background:var(--accent);
      border-radius:10px;
      font-weight:900;
    }

    .tools-page .faq-section{padding:0 0 86px}
    .tools-page .faq-list{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:15px;
    }
    .tools-page details{
      padding:18px 20px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:14px;
    }
    .tools-page summary{
      color:#15243c;
      cursor:pointer;
      font-weight:800;
    }
    .tools-page details p{
      margin:12px 0 0;
      color:var(--muted);
      font-size:14px;
    }

    .footer{
      padding:62px 0 0;
      color:#c9d4e6;
      background:#061225;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr 1fr 1fr 1fr;
      gap:42px;
      padding-bottom:40px;
    }
    .footer h3{
      margin:0 0 14px;
      color:#fff;
      font-size:23px;
    }
    .footer h4{
      margin:3px 0 16px;
      color:#fff;
      font-size:15px;
    }
    .footer p{
      margin:7px 0;
      color:#93a4bc;
      font-size:13px;
    }
    .footer-grid>div>a{
      display:block;
      margin:9px 0;
      color:#aebbd0;
      font-size:13px;
    }
    .footer-grid>div>a:hover{color:var(--accent)}
    .footer-bottom{
      min-height:66px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#8495ad;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:12px;
    }

    @media (max-width:1100px){
      .main-nav{display:none}
      .header-inner{min-height:68px}
      .header-btns{margin-left:auto}
      .hamburger{display:flex}
      .tools-page .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:800px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{min-height:42px}
      .topbar .container>span:last-child{display:none}
      .header-btns>a:not(.account-btn){display:none}
      .tools-page .tools-intro{padding:62px 0 110px}
      .tools-page .intro-content>p{font-size:15px}
      .tools-page .summary-grid{grid-template-columns:repeat(2,1fr)}
      .tools-page .summary-item:nth-child(2){border-right:0}
      .tools-page .summary-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .tools-page .section-head{display:block}
      .tools-page .section-head p{margin-top:10px;text-align:left}
      .tools-page .method-grid{grid-template-columns:1fr}
      .tools-page .notice-panel{grid-template-columns:1fr}
      .tools-page .faq-list{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .footer-bottom{align-items:flex-start;flex-direction:column;padding:18px 0}
    }
    @media (max-width:560px){
      .logo span{max-width:130px;overflow:hidden;text-overflow:ellipsis}
      .header-btns .account-btn{display:none}
      .tools-page .tools-intro{padding-top:48px}
      .tools-page .tool-search{display:block;padding:8px}
      .tools-page .tool-search input{width:100%;display:block}
      .tools-page .tool-search button{width:100%}
      .tools-page .summary-item{padding:18px 14px}
      .tools-page .summary-item strong{font-size:19px}
      .tools-page .tools-section,
      .tools-page .method-section,
      .tools-page .notice-section{padding:56px 0}
      .tools-page .section-head h2{font-size:27px}
      .tools-page .tool-grid{grid-template-columns:1fr}
      .tools-page .notice-panel{padding:24px}
      .tools-page .faq-section{padding-bottom:62px}
      .footer-grid{grid-template-columns:1fr;gap:26px}
    }