:root{
      --blue:#0B3D91;
      --blue-deep:#082d6c;
      --ink:#172033;
      --muted:#687386;
      --line:#e5eaf2;
      --bg:#f5f7fb;
      --white:#fff;
      --shadow:0 18px 50px rgba(15,39,86,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{height:38px;background:#071b42;color:#dce7fb;font-size:13px}
    .topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topbar-info{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}
    .header-inner{height:76px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;font-size:18px;color:var(--blue)}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:5px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;font-size:15px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--blue)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8290a8}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:300px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:40}
    .mega-menu{width:520px}
    .nav-item:hover>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.dropdown-panel,.nav-item:focus-within>.mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .mega-heading{margin:0 0 11px;color:var(--blue);font-size:14px;font-weight:800}
    .mega-list,.broker-mini,.video-mini,.product-mini{display:grid;gap:7px}
    .mega-list a,.broker-mini a,.video-mini a,.product-mini a{display:block;padding:7px 9px;border-radius:8px;font-size:13px;color:#4a5870}
    .mega-list a:hover,.broker-mini a:hover,.video-mini a:hover,.product-mini a:hover{background:#f0f5ff;color:var(--blue)}
    .mega-list img{display:inline-block;width:22px;height:22px;vertical-align:middle;object-fit:contain}
    .mega-footer{display:inline-block;margin-top:15px;color:var(--blue);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
    .member-btn,.open-btn{padding:9px 14px;border-radius:9px;font-size:13px;font-weight:700}
    .member-btn{color:var(--blue);background:#edf3ff}
    .open-btn{color:#fff;background:var(--blue)}
    .hamburger{display:none;border:0;background:transparent;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px 0;background:var(--ink);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{display:none;position:fixed;inset:0;background:rgba(4,19,46,.5);z-index:60}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(390px,88vw);background:#fff;z-index:70;transform:translateX(100%);transition:.25s;overflow:auto;box-shadow:-15px 0 40px rgba(0,0,0,.16)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:72px;display:flex;align-items:center;gap:14px;padding:0 20px;border-bottom:1px solid var(--line);font-weight:800}
    .drawer-head span{flex:1;color:var(--blue)}
    .drawer-head a{padding:7px 12px;background:var(--blue);border-radius:7px;color:#fff;font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:#657087;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--blue)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#071b42;color:#cbd7ec}
    .footer .container{padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}
    .footer-brand{font-size:21px;font-weight:800;color:#fff;margin-bottom:10px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer p{margin:5px 0;font-size:13px;color:#aebdd5}
    .footer-grid a{display:block;margin:7px 0;color:#aebdd5;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:38px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#91a4c2}

    .tools-page{padding:58px 0 20px}
    .tools-hero{text-align:center;max-width:760px;margin:0 auto 36px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:#e9f0ff;color:var(--blue);font-size:13px;font-weight:800}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#36a269}
    .tools-hero h1{margin:16px 0 10px;font-size:clamp(30px,5vw,52px);line-height:1.18;letter-spacing:-1px;color:#101d37}
    .tools-hero p{margin:0;color:var(--muted);font-size:16px}
    .tools-toolbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin:28px 0 22px;padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .tools-toolbar strong{font-size:17px}
    .tools-toolbar span{color:var(--muted);font-size:13px}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .tool-card{display:flex;flex-direction:column;min-height:260px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 25px rgba(22,48,92,.05);transition:.25s}
    .tool-card:hover{transform:translateY(-5px);border-color:#b8caf0;box-shadow:var(--shadow)}
    .tool-icon{display:flex;align-items:center;justify-content:center;width:58px;height:58px;margin-bottom:18px;border-radius:15px;background:#edf3ff;color:var(--blue);overflow:hidden}
    .tool-icon img{width:36px;height:36px;object-fit:contain}
    .tool-card h2{margin:0 0 8px;font-size:19px;color:#132346}
    .tool-card p{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:3;margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .tool-link{display:inline-flex;align-items:center;gap:6px;margin-top:auto;padding-top:19px;color:var(--blue);font-size:14px;font-weight:800}
    .tool-link:after{content:"→";transition:.2s}
    .tool-card:hover .tool-link:after{transform:translateX(4px)}
    .tools-note{margin-top:28px;padding:20px 24px;background:#eef5ff;border-left:4px solid var(--blue);border-radius:10px;color:#52627c;font-size:14px}

    @media(max-width:1000px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:620px){
      .container{width:min(100% - 28px,1180px)}
      .topbar{height:auto;padding:8px 0}
      .topbar .container,.topbar-info{gap:8px;flex-direction:column;align-items:flex-start}
      .header-inner{height:68px;gap:10px}
      .member-btn{display:none}
      .open-btn{padding:8px 10px}
      .tools-page{padding-top:38px}
      .tools-grid{grid-template-columns:1fr}
      .tools-toolbar{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{flex-direction:column;gap:6px}
    }