:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#64748b;
      --line:#dbe3ef;
      --paper:#f7f9fc;
      --white:#fff;
      --accent:#c44735;
      --shadow:0 16px 40px rgba(20,42,76,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f4f7fb;font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif}
    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:#10213d;color:#dbe7fb;font-size:13px}
    .topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:175px;font-weight:800;font-size:18px;color:var(--theme)}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:3px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:25px 14px;color:#263650;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-top:-4px}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:300px;padding:20px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:650px}
    .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}
    .menu-title{margin:0 0 10px;font-weight:800;color:var(--theme)}
    .menu-list{display:grid;gap:7px}
    .menu-list a{padding:5px 0;border-bottom:1px solid #edf1f6}
    .menu-list a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{min-height:88px;padding:10px;border:1px solid var(--line);background:#fbfcfe;font-size:13px}
    .mega-card:hover{border-color:var(--theme);background:#f3f7ff}
    .mega-card img{width:30px;height:30px;object-fit:contain;margin-bottom:5px}
    .mega-card b{font-size:13px}
    .mega-card small{color:var(--muted);font-size:11px}
    .mega-footer{display:block;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-weight:700;color:var(--theme)}
    .header-btns{display:flex;align-items:center;gap:9px}
    .member,.open-account{padding:8px 13px;border:1px solid var(--theme);font-size:13px}
    .member{color:var(--theme)}
    .open-account{background:var(--theme);color:#fff}
    .hamburger{display:none;width:42px;height:38px;border:1px solid var(--line);background:#fff;padding:8px}
    .hamburger span{display:block;height:2px;margin:4px 0;background:var(--ink);transition:.2s}
    .drawer-overlay{display:none;position:fixed;inset:0;z-index:30;background:rgba(8,19,38,.45)}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:0;bottom:0;z-index:31;width:min(360px,88vw);padding:20px;background:#fff;overflow:auto;transform:translateX(100%);transition:.25s;box-shadow:-12px 0 35px rgba(0,0,0,.12)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding-bottom:17px;border-bottom:1px solid var(--line);font-weight:800}
    .drawer-head span{margin-right:auto;color:var(--theme)}
    .drawer-head a{padding:5px 10px;background:var(--theme);color:#fff;font-size:13px}
    .drawer-close{border:0;background:none;font-size:25px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:12px 0}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:12px 2px;border:0;border-bottom:1px solid #edf1f6;background:#fff;text-align:left;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 8px 14px;background:#f8fafc}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#101d33;color:#c6d2e5}
    .footer .container{padding:46px 0 18px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:34px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:16px}
    .footer p{margin:0 0 9px;color:#aebdd2;font-size:13px}
    .footer-grid a{display:block;margin:6px 0;color:#c6d2e5;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{margin-top:32px;padding-top:15px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#91a1b8}
    .download-page-main{padding:62px 0 10px}
    .page-heading{text-align:center;max-width:720px;margin:0 auto 42px}
    .eyebrow{display:inline-block;margin-bottom:10px;color:var(--accent);font-weight:800;letter-spacing:.08em;font-size:12px}
    .page-heading h1{margin:0 0 12px;color:#12284f;font-size:clamp(30px,5vw,48px);line-height:1.2}
    .page-heading p{margin:0;color:var(--muted);font-size:16px}
    .download-panel{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:34px}
    .download-panel h2{margin:0 0 8px;color:#12284f;font-size:25px}
    .download-panel>p{margin:0;color:var(--muted)}
    .download-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0}
    .step{position:relative;padding:23px 20px;background:#f7f9fc;border:1px solid var(--line)}
    .step-number{display:grid;place-items:center;width:34px;height:34px;margin-bottom:14px;background:var(--theme);color:#fff;font-weight:800}
    .step h3{margin:0 0 7px;font-size:17px;color:#1d355e}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .download-actions{display:flex;flex-wrap:wrap;gap:12px;padding-top:23px;border-top:1px solid var(--line)}
    .primary-action,.secondary-action{display:inline-flex;align-items:center;justify-content:center;padding:11px 20px;border:1px solid var(--theme);font-weight:700}
    .primary-action{background:var(--theme);color:#fff}
    .secondary-action{color:var(--theme);background:#fff}
    .notice{margin-top:26px;padding:17px 19px;border-left:4px solid var(--accent);background:#fff7f3;color:#5e3d35;font-size:14px}
    .faq-section{margin-top:44px}
    .faq-section h2{margin:0 0 18px;color:#12284f;font-size:26px}
    .faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .faq-item{padding:20px;background:#fff;border:1px solid var(--line)}
    .faq-item h3{margin:0 0 8px;font-size:16px;color:#1d355e}
    .faq-item p{margin:0;color:var(--muted);font-size:14px}
    @media(max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .mega-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{height:auto;min-height:36px;padding:7px 0;align-items:flex-start;gap:4px;flex-direction:column}
      .logo{min-width:0}
      .member{display:none}
      .open-account{padding:7px 10px}
      .download-page-main{padding-top:38px}
      .download-panel{padding:22px 17px}
      .download-steps,.faq-list{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .page-heading{margin-bottom:27px}
    }
    @media(max-width:430px){
      .header-inner{min-height:66px;gap:10px}
      .logo span{font-size:16px}
      .download-actions{flex-direction:column}
      .primary-action,.secondary-action{width:100%}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
    }