:root{
      --theme:#0B3D91;
      --theme-deep:#082b67;
      --cyan:#12cfe3;
      --ink:#14233f;
      --muted:#66748d;
      --line:#e2e8f2;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 48px rgba(11,61,145,.12);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.65}
    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{background:#071d49;color:#d8e6ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:20px}
    .topbar a{color:#d8e6ff;transition:color .2s}
    .topbar a:hover{color:var(--cyan)}

    .header{position:relative;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 5px 20px rgba(17,43,84,.04)}
    .header-inner{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:9px;white-space:nowrap;font-size:18px;font-weight:800;color:var(--theme)}
    .logo img{width:32px;height:32px;object-fit:contain}
    .logo-mark{width:32px;height:32px;border-radius:10px;display:inline-grid;place-items:center;background:var(--theme);color:#fff;font-size:12px;letter-spacing:-1px}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:2px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;min-height:76px;padding:0 14px;color:#263753;font-size:14px;font-weight:700;white-space:nowrap}
    .nav-link:not(.simple)::after{content:"";margin-left:7px;width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translate(-50%,8px);width:310px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
    .mega-menu{width:min(700px,calc(100vw - 30px))}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .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:translate(-50%,0)}
    .mega-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}
    .menu-heading{margin:0 0 13px;color:var(--theme);font-size:14px}
    .menu-list{list-style:none;margin:0;padding:0}
    .menu-list li+li{border-top:1px solid #eef2f7}
    .menu-list a{display:flex;align-items:center;gap:8px;padding:9px 0;color:#42516b;font-size:13px}
    .menu-list a:hover{color:var(--theme)}
    .menu-list img{width:20px;height:20px;object-fit:contain}
    .broker-mega-card,.video-mega-card{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid #eef2f7}
    .broker-mega-card img,.video-mega-card img{width:42px;height:42px;border-radius:10px;object-fit:cover;background:#eef3fa}
    .broker-mega-card span,.video-mega-card span{display:grid;min-width:0}
    .mega-title{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-meta{color:var(--muted);font-size:11px}
    .header-btns{display:flex;align-items:center;gap:13px;white-space:nowrap}
    .header-btns>span{color:var(--theme);font-size:13px;font-weight:700}
    .account-link{padding:9px 15px;border-radius:9px;background:var(--theme);color:#fff;font-size:13px;font-weight:700}
    .account-link:hover{background:var(--theme-deep)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:9px;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:5px 0;background:var(--theme);transition:.2s}
    .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;background:rgba(4,20,49,.5);opacity:0;visibility:hidden;z-index:40;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;z-index:50;transform:translateX(100%);transition:transform .28s ease;box-shadow:-15px 0 40px rgba(0,0,0,.15);overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:21px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:800}
    .drawer-head>a{margin-left:auto;padding:7px 12px;border-radius:8px;background:var(--theme);color:#fff;font-size:13px}
    .drawer-close{border:0;background:transparent;color:#55647b;font-size:28px;line-height:1;cursor:pointer}
    .drawer-menu{padding:10px 21px 28px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:15px 0;border:0;border-bottom:1px solid #edf1f6;background:transparent;text-align:left;color:#263753;font-weight:700;cursor:pointer}
    .drawer-submenu{display:none;padding:3px 0 9px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
    .drawer-toggle.active:after{content:"－"}

    .tools-page{padding-bottom:70px}
    .tools-hero{position:relative;overflow:hidden;padding:76px 0 65px;background:linear-gradient(135deg,#eaf5ff 0%,#f7fbff 52%,#e8fbfc 100%)}
    .tools-hero:before,.tools-hero:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
    .tools-hero:before{width:420px;height:420px;right:-150px;top:-170px;background:rgba(18,207,227,.13)}
    .tools-hero:after{width:280px;height:280px;left:-140px;bottom:-180px;background:rgba(11,61,145,.08)}
    .tools-hero-inner{position:relative;z-index:1;text-align:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--cyan)}
    .tools-hero h1{margin:0;font-size:clamp(34px,5vw,58px);line-height:1.12;letter-spacing:-.04em;color:#0c2f6e}
    .tools-hero p{max-width:680px;margin:20px auto 0;color:#5e6d84;font-size:17px}
    .hero-actions{display:flex;justify-content:center;gap:12px;margin-top:28px;flex-wrap:wrap}
    .button-primary,.button-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:800}
    .button-primary{background:var(--theme);color:#fff;box-shadow:0 9px 22px rgba(11,61,145,.2)}
    .button-secondary{background:#fff;color:var(--theme);border:1px solid #cbd8eb}
    .button-primary:hover{background:var(--theme-deep)}
    .button-secondary:hover{border-color:var(--theme);background:#f3f8ff}
    .tools-hero-stats{display:flex;justify-content:center;gap:42px;margin-top:42px}
    .tools-hero-stats strong{display:block;color:var(--theme);font-size:24px}
    .tools-hero-stats span{display:block;color:var(--muted);font-size:12px}

    .tools-content{margin-top:-25px;position:relative;z-index:2}
    .tools-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
    .tools-toolbar h2{margin:0;font-size:18px;color:var(--ink)}
    .tools-toolbar p{margin:4px 0 0;color:var(--muted);font-size:13px}
    .tool-filters{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
    .filter-chip{border:1px solid #d8e2ef;background:#fff;color:#53627b;border-radius:99px;padding:8px 13px;font-size:12px;cursor:pointer}
    .filter-chip.active,.filter-chip:hover{border-color:var(--theme);background:#edf4ff;color:var(--theme)}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
    .tool-card{display:flex;flex-direction:column;min-height:245px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 25px rgba(25,57,104,.06);transition:.22s}
    .tool-card:hover{transform:translateY(-5px);border-color:#9eb9df;box-shadow:var(--shadow)}
    .tool-icon{display:grid;place-items:center;width:52px;height:52px;margin-bottom:18px;border-radius:15px;background:#eaf5ff;color:var(--theme);font-size:24px}
    .tool-card:nth-child(3n+2) .tool-icon{background:#e8fbfc;color:#058ca0}
    .tool-card:nth-child(3n) .tool-icon{background:#eef0ff;color:#5547bd}
    .tool-card h3{margin:0 0 8px;font-size:18px}
    .tool-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}
    .tool-card-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:19px}
    .tool-label{color:#8a97a9;font-size:12px}
    .tool-link{color:var(--theme);font-size:13px;font-weight:800}
    .tool-link:after{content:" →";color:var(--cyan)}
    .tool-note{margin-top:44px;padding:25px 28px;border:1px solid #cfe1f4;border-radius:18px;background:linear-gradient(110deg,#f0f7ff,#f5ffff)}
    .tool-note h2{margin:0 0 7px;font-size:20px;color:var(--theme)}
    .tool-note p{margin:0;color:#607089;font-size:14px}

    .footer{background:#081e48;color:#c8d5ea}
    .footer-main{display:grid;grid-template-columns:1.35fr .8fr 1fr 1fr;gap:38px;padding:52px 0 42px}
    .footer-brand>span{display:block;margin-bottom:12px;color:#fff;font-size:20px;font-weight:800}
    .footer-brand p{max-width:300px;margin:0;color:#9eb0cc;font-size:13px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:14px}
    .footer-links{list-style:none;margin:0;padding:0}
    .footer-links li{margin:7px 0}
    .footer-links a,.footer-contact a,.footer-contact span{color:#9eb0cc;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:var(--cyan)}
    .footer-contact{display:grid;gap:8px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12)}
    .footer-bottom-inner{display:flex;justify-content:space-between;gap:20px;padding:17px 0;color:#91a5c4;font-size:12px}

    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns>span{display:none}
      .footer-main{grid-template-columns:repeat(2,1fr)}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-links{gap:8px;flex-direction:column;text-align:right}
      .header-inner{height:66px;gap:12px}
      .logo{font-size:16px}
      .account-link{padding:8px 11px;font-size:12px}
      .tools-hero{padding:55px 0 52px}
      .tools-hero p{font-size:15px}
      .tools-hero-stats{gap:18px}
      .tools-hero-stats strong{font-size:20px}
      .tools-toolbar{display:block;padding:17px}
      .tool-filters{justify-content:flex-start;margin-top:15px}
      .tools-grid{grid-template-columns:1fr;gap:14px}
      .tool-card{min-height:220px}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:38px 0}
      .footer-bottom-inner{display:block}
      .footer-bottom-inner span{display:block;margin:5px 0}
    }