:root{
      --theme:#0B3D91;
      --theme-dark:#082b67;
      --ink:#14233b;
      --muted:#66748a;
      --line:#e5eaf1;
      --paper:#f5f8fc;
      --white:#fff;
      --gold:#d5a84b;
      --shadow:0 18px 50px rgba(15,42,82,.10);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);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}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{height:38px;background:#071a38;color:#cbd8eb;font-size:13px}
    .topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{display:flex;gap:24px}
    .topbar a{color:#fff}
    .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:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:200px;color:var(--theme);font-weight:800;font-size:19px;letter-spacing:.02em}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:27px 13px;color:#34445b;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:var(--shadow);transition:.2s ease;z-index:30}
    .dropdown-panel{width:250px;padding:12px}
    .dropdown-panel a{display:block;padding:9px 12px;border-radius:7px;font-size:14px}
    .dropdown-panel a:hover{background:#eef4fc;color:var(--theme)}
    .mega-menu{width:680px;padding:20px}
    .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;transform:translateX(-50%) translateY(0)}
    .nav-item:hover:after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{display:flex;flex-direction:column;gap:4px;padding:12px;border:1px solid #edf0f5;border-radius:9px;min-height:78px;background:#fff}
    .mega-card:hover{border-color:#a8c4e9;background:#f5f9ff}
    .mega-card img{width:30px;height:30px;object-fit:contain}
    .mega-card strong{font-size:14px;color:var(--ink)}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.45}
    .mega-footer{display:block;margin-top:15px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-weight:700;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:700}
    .open-account{padding:8px 15px;border-radius:5px;background:var(--theme);color:#fff;font-size:13px}
    .hamburger{display:none;width:40px;height:38px;padding:8px;border:1px solid var(--line);border-radius:6px;background:#fff;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;margin:4px auto;background:var(--theme);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{display:none}
    .mobile-drawer{display:none}

    .tools-page{padding:58px 0 82px}
    .tools-heading{text-align:center;max-width:760px;margin:0 auto 34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.16em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--gold)}
    .tools-heading h1{margin:10px 0 12px;font-size:clamp(32px,5vw,52px);line-height:1.2;letter-spacing:-.04em}
    .tools-heading p{margin:0;color:var(--muted);font-size:16px}
    .tool-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px;padding:15px 18px;background:#fff;border:1px solid var(--line);border-radius:12px}
    .tool-filters{display:flex;flex-wrap:wrap;gap:8px}
    .tool-filter{padding:7px 13px;border:1px solid var(--line);border-radius:30px;background:#fff;color:#526177;font-size:13px;cursor:pointer}
    .tool-filter.active,.tool-filter:hover{border-color:var(--theme);background:var(--theme);color:#fff}
    .tool-search{width:230px;padding:10px 13px;border:1px solid var(--line);border-radius:6px;outline:none;color:var(--ink)}
    .tool-search:focus{border-color:var(--theme);box-shadow:0 0 0 3px rgba(11,61,145,.1)}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .tool-card{display:flex;flex-direction:column;padding:24px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 7px 20px rgba(25,55,95,.04);transition:.25s ease}
    .tool-card:hover{transform:translateY(-4px);border-color:#a8c4e9;box-shadow:var(--shadow)}
    .tool-card-head{display:flex;align-items:center;gap:14px;margin-bottom:15px}
    .tool-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:12px;background:#edf4ff;color:var(--theme);overflow:hidden;flex:none}
    .tool-icon img{width:34px;height:34px;object-fit:contain}
    .tool-card h2{margin:0;font-size:19px;line-height:1.35}
    .tool-card p{min-height:54px;margin:0 0 18px;color:var(--muted);font-size:14px;line-height:1.65}
    .tool-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:15px;border-top:1px solid #eef1f5}
    .tool-meta{font-size:12px;color:#8995a6}
    .tool-enter{color:var(--theme);font-size:14px;font-weight:700}
    .tool-enter:after{content:" →";transition:.2s}
    .tool-card:hover .tool-enter:after{padding-left:5px}
    .tools-note{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:34px;padding:22px 26px;background:linear-gradient(100deg,#0b3d91,#1763b1);border-radius:14px;color:#fff}
    .tools-note strong{font-size:18px}
    .tools-note p{margin:4px 0 0;color:#dce9f9;font-size:13px}
    .tools-note a{padding:10px 17px;border:1px solid rgba(255,255,255,.55);border-radius:5px;color:#fff;font-size:13px;white-space:nowrap}
    .footer{background:#071a38;color:#b9c8dd;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
    .footer-brand strong{display:block;color:#fff;font-size:20px;margin-bottom:12px}
    .footer p{margin:6px 0;font-size:13px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;color:#b9c8dd;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:35px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);font-size:12px;color:#8498b4}

    @media(max-width:1050px){
      .header-inner{gap:16px}.logo{min-width:170px}.nav-link{padding-left:8px;padding-right:8px;font-size:14px}
      .mega-menu{width:600px}
    }
    @media(max-width:800px){
      .container{width:min(100% - 28px,680px)}
      .topbar{height:auto;padding:8px 0}.topbar .container{align-items:flex-start;gap:4px;flex-direction:column}.topbar-links{gap:15px}
      .header-inner{min-height:68px}.main-nav{display:none}.header-btns{margin-left:auto}.member-link{display:none}.hamburger{display:block}
      .open-account{padding:7px 12px}
      .tools-page{padding:40px 0 55px}.tools-heading{margin-bottom:25px}
      .tool-toolbar{align-items:stretch;flex-direction:column}.tool-search{width:100%}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .footer-bottom{flex-direction:column;gap:5px}
      .mobile-drawer{display:block;position:fixed;top:0;right:0;bottom:0;width:min(360px,88vw);background:#fff;z-index:100;transform:translateX(100%);transition:transform .28s ease;box-shadow:-12px 0 35px rgba(0,0,0,.18);overflow:auto}
      .mobile-drawer.open{transform:translateX(0)}
      .drawer-overlay{display:block;position:fixed;inset:0;z-index:90;background:rgba(3,18,39,.55);opacity:0;visibility:hidden;transition:.2s}
      .drawer-overlay.open{opacity:1;visibility:visible}
      .drawer-head{display:flex;align-items:center;gap:15px;padding:20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:800}
      .drawer-head a{margin-left:auto;padding:6px 11px;background:var(--theme);color:#fff;border-radius:4px;font-size:13px}
      .drawer-close{border:0;background:none;color:#607086;font-size:28px;line-height:1;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 #edf0f5;background:transparent;text-align:left;color:var(--ink);font-size:15px;cursor:pointer}
      .drawer-group{border-bottom:1px solid #edf0f5}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.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:13px}
    }
    @media(max-width:520px){
      .tools-grid{grid-template-columns:1fr}.tool-card p{min-height:0}.tools-note{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr;gap:22px}.footer-brand{grid-column:1/-1}
    }