:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#667085;
      --line:#e5eaf1;
      --soft:#f5f8fc;
      --white:#fff;
      --shadow:0 16px 45px rgba(14,35,70,.10);
      --radius:18px;
    }
    *{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:1.7}
    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{background:#102a51;color:#dce8f8;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-info{display:flex;gap:22px}
    .topbar a:hover{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:32px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:19px;font-weight:800;color:var(--theme)}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 14px;color:#354052;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:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;pointer-events:none;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);transition:.2s ease;padding:22px;z-index:30}
    .dropdown-panel{width:300px}
    .mega-menu{width:560px}
    .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}
    .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:28px}
    .mega-heading{margin:0 0 12px;color:var(--theme);font-weight:800;font-size:14px}
    .mega-list,.broker-mini,.video-mini,.product-mini{display:grid;gap:8px}
    .mega-list a,.broker-mini a,.video-mini a,.product-mini a{display:block;padding:8px 10px;border-radius:9px;font-size:13px;color:#4e5b6d}
    .mega-list a:hover,.broker-mini a:hover,.video-mini a:hover,.product-mini a:hover{background:var(--soft);color:var(--theme)}
    .mega-list img{width:20px;height:20px;display:inline-block;vertical-align:middle;object-fit:contain}
    .mega-menu p{font-size:13px;color:var(--muted);margin:0 0 14px}
    .mega-footer{display:inline-block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-btn{font-size:14px;color:var(--theme);font-weight:700}
    .open-btn{padding:9px 16px;background:var(--theme);color:#fff;border-radius:8px;font-size:14px}
    .hamburger{display:none;width:42px;height:38px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px;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{position:fixed;inset:0;background:rgba(9,22,42,.48);opacity:0;visibility:hidden;transition:.25s;z-index:50}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.28s;z-index:51;overflow:auto;box-shadow:-12px 0 40px rgba(0,0,0,.14)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:72px;display:flex;align-items:center;gap:14px;padding:0 22px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:800}
    .drawer-head span{flex:1}
    .drawer-head a{font-size:13px;color:#fff;background:var(--theme);padding:6px 11px;border-radius:6px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:#667085;cursor:pointer}
    .drawer-menu{padding:12px 22px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}

    .about-page{background:#fff}
    .about-hero{padding:86px 0 96px;background:linear-gradient(135deg,#eef4ff 0%,#fff 58%,#eaf1fb 100%);position:relative;overflow:hidden}
    .about-hero:after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-150px;top:-180px;background:rgba(11,61,145,.08)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:#dce9fb;color:var(--theme);font-size:13px;font-weight:700}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--theme)}
    .about-hero h1{position:relative;z-index:1;max-width:760px;margin:20px 0 18px;font-size:clamp(34px,5vw,62px);line-height:1.16;letter-spacing:-1px}
    .about-hero p{position:relative;z-index:1;max-width:690px;margin:0;color:var(--muted);font-size:18px}
    .about-hero-actions{position:relative;z-index:1;display:flex;gap:12px;margin-top:30px}
    .btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:9px;font-weight:700;font-size:14px}
    .btn-primary{background:var(--theme);color:#fff}
    .btn-secondary{border:1px solid #cbd8e9;color:var(--theme);background:#fff}
    .about-section{padding:82px 0}
    .section-head{max-width:700px;margin:0 auto 38px;text-align:center}
    .section-head h2{margin:0 0 12px;font-size:34px;line-height:1.3}
    .section-head p{margin:0;color:var(--muted)}
    .about-intro{display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center}
    .about-intro h2{margin:0 0 18px;font-size:34px;line-height:1.35}
    .about-intro p{margin:0 0 15px;color:var(--muted)}
    .principles{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .principle{padding:24px;background:#f7f9fc;border:1px solid #e7edf5;border-radius:16px}
    .principle strong{display:block;margin-bottom:7px;color:var(--theme);font-size:18px}
    .principle span{display:block;color:var(--muted);font-size:14px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .service-card{padding:26px 22px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 8px 24px rgba(20,48,90,.05)}
    .service-icon{width:42px;height:42px;display:grid;place-items:center;margin-bottom:18px;border-radius:12px;background:#e7f0fc;color:var(--theme);font-weight:800}
    .service-card h3{margin:0 0 8px;font-size:18px}
    .service-card p{margin:0;color:var(--muted);font-size:14px}
    .trust-band{padding:60px 0;background:#102a51;color:#fff}
    .trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;text-align:center}
    .trust-grid strong{display:block;font-size:32px;color:#fff}
    .trust-grid span{color:#b9c9df;font-size:14px}
    .timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .timeline-card{position:relative;padding:25px;border-top:3px solid var(--theme);background:#f7f9fc;border-radius:0 0 14px 14px}
    .timeline-card b{display:block;margin-bottom:8px;color:var(--theme);font-size:22px}
    .timeline-card h3{margin:0 0 8px;font-size:18px}
    .timeline-card p{margin:0;color:var(--muted);font-size:14px}
    .about-cta{padding:70px 30px;text-align:center;border-radius:22px;background:linear-gradient(135deg,#e9f1fd,#f8fbff)}
    .about-cta h2{margin:0 0 12px;font-size:30px}
    .about-cta p{margin:0 auto 24px;color:var(--muted)}

    .footer{padding:58px 0 20px;background:#0d1f3a;color:#c9d5e6}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:35px}
    .footer-brand{margin-bottom:13px;color:#fff;font-size:20px;font-weight:800}
    .footer p{margin:0 0 8px;font-size:13px;color:#aebed3}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer-grid a{display:block;margin:0 0 8px;color:#aebed3;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:#91a4bd}

    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .about-intro{grid-template-columns:1fr}
      .service-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 .container{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-info{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:68px;gap:12px}
      .logo{font-size:16px}
      .logo img{width:30px;height:30px}
      .member-btn{display:none}
      .about-hero{padding:60px 0 68px}
      .about-hero p{font-size:16px}
      .about-hero-actions{flex-wrap:wrap}
      .about-section{padding:58px 0}
      .section-head h2,.about-intro h2{font-size:28px}
      .principles,.service-grid,.timeline,.trust-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{flex-direction:column;gap:6px}
    }