:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#64748b;
      --line:#dbe4ef;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 16px 48px rgba(15,35,70,.10);
      --radius:16px;
    }
    *{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}
    body.drawer-locked{overflow:hidden}
    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:#10203d;color:#d8e3f3;font-size:13px}
    .topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:12px;align-items:center}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid #edf1f6}
    .header-inner{height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap;color:#10203d}
    .logo img{width:36px;height:36px;object-fit:contain}
    .logo span{font-size:18px}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:78px;padding:0 13px;font-size:15px;color:#334155;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);margin:0 0 4px 8px}
    .dropdown-panel,.mega-menu{
      position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);
      width:330px;padding:22px;background:#fff;border:1px solid #e7edf5;border-radius:0 0 16px 16px;
      box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease
    }
    .mega-menu{width:720px}
    .mega-brokers{width:820px}
    .mega-videos,.mega-products{width:920px}
    .nav-item:after{content:"";position:absolute;left:0;right:0;top:100%;height:10px}
    .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}
    .dropdown-title,.mega-title{margin:0 0 14px;font-size:14px;color:var(--theme);font-weight:800}
    .dropdown-articles{display:grid;gap:9px}
    .dropdown-articles a,.mega-categories a{font-size:14px;color:#475569}
    .dropdown-articles a:hover,.mega-categories a:hover{color:var(--theme)}
    .dropdown-more,.mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);font-size:13px;color:var(--theme);font-weight:700}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:12px;border:1px solid #e7edf5;border-radius:12px;background:#fbfdff}
    .mega-card:hover{border-color:#a9c0e3;box-shadow:0 5px 18px rgba(11,61,145,.08)}
    .mega-card-logo{display:flex;align-items:center;gap:8px;min-height:28px}
    .mega-card-logo img{width:28px;height:28px;object-fit:contain}
    .mega-card strong,.mega-video-title,.mega-product-title{font-size:13px}
    .mega-card p{font-size:12px;color:var(--muted);margin:7px 0 0;line-height:1.5}
    .mega-card-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:8px;font-size:11px;color:#718096}
    .mega-layout{display:grid;grid-template-columns:150px 1fr;gap:20px}
    .mega-categories{border-right:1px solid var(--line);padding-right:16px;display:grid;align-content:start;gap:7px}
    .mega-video-cover,.mega-product-cover{width:100%;height:76px;object-fit:cover;border-radius:8px;margin-bottom:7px}
    .mega-tool-icon{width:28px!important;height:28px!important;object-fit:contain}
    .header-btns{display:flex;align-items:center;gap:12px}
    .header-member{font-size:14px;color:var(--theme);font-weight:700}
    .header-open{padding:8px 16px;border-radius:8px;color:#fff;background:var(--theme);font-size:14px}
    .header-open:hover{background:#092d6c}
    .hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:9px;background:#fff;cursor:pointer;padding:10px}
    .hamburger span{display:block;height:2px;background:#26364f;margin:5px 0;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(7,20,42,.48);z-index:50;opacity:0;visibility:hidden;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:60;right:0;top:0;bottom:0;width:min(390px,88vw);background:#fff;transform:translateX(100%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:18px;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:var(--theme)}
    .drawer-head>a{margin-left:auto;background:var(--theme);color:#fff;padding:5px 13px;border-radius:6px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;line-height:1;color:#526277;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 #edf1f6;background:none;text-align:left;color:#24344e;font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:#8aa0bf}
    .drawer-toggle.active{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:#66758b;font-size:14px}

    .about-page{background:#fff}
    .about-hero{padding:82px 0 72px;background:linear-gradient(135deg,#f5f8fc 0%,#fff 65%);border-bottom:1px solid #e7edf5}
    .about-kicker{display:inline-flex;align-items:center;gap:9px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}
    .about-kicker:before{content:"";width:28px;height:2px;background:var(--theme)}
    .about-hero h1{max-width:780px;margin:18px 0 16px;font-size:clamp(36px,5vw,64px);line-height:1.16;letter-spacing:-.04em;color:#122342}
    .about-hero p{max-width:700px;color:#63738a;font-size:18px;margin:0}
    .about-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
    .btn-primary,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;padding:11px 20px;border-radius:9px;font-size:14px;font-weight:700}
    .btn-primary{background:var(--theme);color:#fff}
    .btn-ghost{border:1px solid #b8c8df;color:var(--theme);background:#fff}
    .about-section{padding:78px 0}
    .section-heading{max-width:680px;margin-bottom:36px}
    .section-heading .eyebrow{color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.14em}
    .section-heading h2{font-size:34px;line-height:1.25;margin:10px 0;color:#122342}
    .section-heading p{margin:0;color:var(--muted)}
    .about-intro{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}
    .about-intro p{color:#53647b;margin:0 0 16px}
    .fact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .fact-card{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 8px 25px rgba(15,35,70,.05)}
    .fact-card strong{display:block;color:var(--theme);font-size:30px;line-height:1.2}
    .fact-card span{display:block;color:#64748b;font-size:14px;margin-top:6px}
    .timeline-section{background:#f7f9fc}
    .timeline{position:relative;max-width:900px;margin:0 auto;padding:16px 0}
    .timeline:before{content:"";position:absolute;top:0;bottom:0;left:50%;width:2px;background:#b9cbe5;transform:translateX(-50%)}
    .timeline-item{position:relative;width:50%;padding:0 42px 42px}
    .timeline-item:nth-child(odd){left:0;text-align:right}
    .timeline-item:nth-child(even){left:50%;text-align:left}
    .timeline-dot{position:absolute;top:18px;width:14px;height:14px;border:3px solid #fff;border-radius:50%;background:var(--theme);box-shadow:0 0 0 3px #b9cbe5}
    .timeline-item:nth-child(odd) .timeline-dot{right:-7px}
    .timeline-item:nth-child(even) .timeline-dot{left:-7px}
    .timeline-card{display:inline-block;width:100%;padding:22px;background:#fff;border:1px solid #dbe4ef;border-radius:14px;box-shadow:0 10px 26px rgba(20,48,90,.06);text-align:left}
    .timeline-year{color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .timeline-card h3{font-size:20px;margin:7px 0 8px;color:#1a2c49}
    .timeline-card p{margin:0;color:#66758b;font-size:14px}
    .values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .value-card{padding:28px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .value-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:#e9f0fb;color:var(--theme);font-weight:800}
    .value-card h3{font-size:19px;margin:18px 0 8px}
    .value-card p{margin:0;color:#66758b;font-size:14px}
    .about-cta{padding:58px 0;background:#10203d;color:#fff}
    .about-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .about-cta h2{margin:0 0 8px;font-size:30px}
    .about-cta p{margin:0;color:#c4d0e1}
    .about-cta .btn-primary{background:#fff;color:var(--theme)}

    .footer{background:#0d1a30;color:#aebbd0}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px;padding:56px 0 42px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer-brand p{font-size:13px;line-height:1.8;margin:0 0 17px;max-width:320px}
    .footer-social a{color:#d7e5f8;font-size:13px}
    .footer h3{font-size:15px;color:#fff;margin:4px 0 17px}
    .footer-links,.footer-contact{display:grid;gap:9px;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12px}
    .footer-bottom-links{display:flex;gap:18px}

    @media(max-width:1000px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .about-intro{grid-template-columns:1fr}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{height:auto;min-height:38px;padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-contact{gap:7px;flex-wrap:wrap}
      .header-inner{height:68px;gap:10px}
      .header-member{display:none}
      .header-open{padding:7px 12px}
      .about-hero{padding:56px 0 52px}
      .about-hero p{font-size:16px}
      .about-section{padding:55px 0}
      .section-heading h2{font-size:28px}
      .fact-grid,.values-grid{grid-template-columns:1fr}
      .timeline:before{left:13px}
      .timeline-item,.timeline-item:nth-child(even){left:0;width:100%;padding:0 0 28px 42px;text-align:left}
      .timeline-item:nth-child(odd) .timeline-dot,.timeline-item:nth-child(even) .timeline-dot{left:6px;right:auto}
      .timeline-card{width:100%}
      .about-cta-inner{display:block}
      .about-cta .btn-primary{margin-top:22px}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:42px 0 32px}
      .footer-bottom{display:block}
      .footer-bottom-links{margin-top:10px}
    }