:root{--primary:#0B3D91;--deep:#071a36;--ice:#eef7ff;--line:#d8e7f3;--text:#17324d;--muted:#6d8298;--white:#fff}
    *{box-sizing:border-box}
    html,body{margin:0;padding:0;color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#f5faff}
    body{line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:var(--deep);color:#cddcf0;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 5px 20px rgba(11,61,145,.06)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:32px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:20px;font-weight:800;color:var(--deep)}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{list-style:none;display:flex;justify-content:center;align-items:center;gap:4px;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;font-size:14px;font-weight:600;color:#29445f}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:5px;color:#7890a7}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(7,26,54,.15);border-radius:0 0 14px 14px}
    .dropdown-panel{width:250px;padding:12px}
    .dropdown-panel a{display:block;padding:10px 12px;border-radius:8px;font-size:13px}
    .dropdown-panel a:hover{background:var(--ice);color:var(--primary)}
    .mega-menu{width:min(850px,calc(100vw - 30px));padding:24px}
    .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}
    .mega-menu:before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
    .mega-title{font-size:15px;font-weight:800;color:var(--deep);margin-bottom:15px}
    .broker-grid,.video-grid,.tool-grid,.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:flex;gap:10px;min-height:70px;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fbfdff}
    .mega-card:hover{border-color:#8db7de;background:var(--ice)}
    .mega-card img{width:34px;height:34px;object-fit:contain;flex:none}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:13px;color:var(--deep)}
    .mega-card small{font-size:11px;color:var(--muted);line-height:1.5;margin-top:2px}
    .video-play{width:30px;height:30px;display:grid;place-items:center;color:#fff;background:var(--primary);border-radius:50%;flex:none;font-size:12px}
    .mega-footer{display:block;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);color:var(--primary);font-size:13px;font-weight:700}
    .tool-links a{font-size:12px!important}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link{font-size:13px;color:var(--primary)}
    .open-account{padding:9px 15px;color:#fff;background:var(--primary);border-radius:8px;font-size:13px;font-weight:700}
    .hamburger{display:none;border:0;background:none;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;margin:4px 0;background:var(--deep);transition:.2s}
    .drawer-overlay{position:fixed;inset:0;background:rgba(7,26,54,.45);opacity:0;visibility:hidden;transition:.2s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;overflow:auto;background:#fff;z-index:50;transition:.25s;box-shadow:-12px 0 30px rgba(0,0,0,.15)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid var(--line);font-weight:800;color:var(--deep)}
    .drawer-head span{flex:1}
    .drawer-head a{background:var(--primary);color:#fff;padding:6px 11px;border-radius:6px;font-size:12px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf3f8;background:none;text-align:left;color:var(--text);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary)}
    .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:13px}
    .footer{margin-top:70px;background:var(--deep);color:#b9cbe0;padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{display:flex;align-items:center;gap:9px;color:#fff;font-size:19px;font-weight:800;margin-bottom:15px}
    .footer-brand img{width:34px;height:34px;object-fit:contain}
    .footer p{font-size:13px;line-height:1.8;margin:8px 0}
    .footer h3{font-size:15px;color:#fff;margin:0 0 15px}
    .footer-grid>div>a{display:block;font-size:13px;margin:9px 0;color:#b9cbe0}
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:18px;font-size:12px}
    .download-page-main{padding:76px 0 10px}
    .download-hero{text-align:center;max-width:820px;margin:0 auto 42px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--primary)}
    .download-hero h1{margin:14px 0 12px;color:var(--deep);font-size:clamp(32px,5vw,56px);line-height:1.15}
    .download-hero p{margin:0;color:var(--muted);font-size:16px}
    .download-panel{display:grid;grid-template-columns:1fr 1.2fr;gap:0;max-width:1000px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 18px 50px rgba(11,61,145,.1)}
    .download-intro{padding:42px;background:linear-gradient(145deg,#0B3D91,#092653);color:#fff}
    .download-intro h2{margin:0 0 15px;font-size:26px}
    .download-intro p{color:#dceaff;font-size:14px}
    .download-badge{display:inline-block;padding:6px 10px;border:1px solid rgba(255,255,255,.35);border-radius:20px;font-size:12px;margin-bottom:22px}
    .download-points{list-style:none;padding:0;margin:28px 0 0}
    .download-points li{margin:14px 0;color:#e6f1ff;font-size:14px}
    .download-points li:before{content:"✓";display:inline-grid;place-items:center;width:20px;height:20px;margin-right:8px;border-radius:50%;background:#8ed6ff;color:#073a78;font-weight:800}
    .download-options{padding:42px}
    .download-options h2{margin:0 0 7px;color:var(--deep);font-size:25px}
    .download-options>p{margin:0 0 24px;color:var(--muted);font-size:14px}
    .download-card{display:flex;align-items:center;gap:16px;padding:18px;margin:12px 0;border:1px solid var(--line);border-radius:13px}
    .download-card:hover{border-color:#7aa7d2;background:#f7fbff}
    .download-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:12px;background:#e7f2ff;color:var(--primary);font-size:22px;flex:none}
    .download-card h3{margin:0;color:var(--deep);font-size:16px}
    .download-card p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .download-card .download-btn{margin-left:auto;padding:8px 13px;border-radius:7px;background:var(--primary);color:#fff;font-size:12px;white-space:nowrap}
    .download-notice{max-width:1000px;margin:28px auto 0;padding:16px 20px;border:1px solid #c9e0f3;border-radius:12px;background:#edf7ff;color:#54718d;font-size:13px}
    .download-faq{max-width:1000px;margin:52px auto 0}
    .download-faq h2{text-align:center;color:var(--deep);margin-bottom:24px}
    .faq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .faq-item{padding:22px;background:#fff;border:1px solid var(--line);border-radius:13px}
    .faq-item h3{margin:0 0 8px;color:var(--deep);font-size:15px}
    .faq-item p{margin:0;color:var(--muted);font-size:13px}
    @media(max-width:980px){
      .main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between}.header-btns{margin-left:auto}
      .download-panel{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:600px){
      .container{width:min(100% - 28px,1180px)}.topbar .container{display:block;padding:7px 0}.topbar-links{gap:12px;margin-top:2px}
      .member-link{display:none}.header-inner{min-height:66px}.logo{font-size:17px}.logo img{width:32px;height:32px}
      .download-page-main{padding-top:48px}.download-hero h1{font-size:36px}.download-hero p{font-size:14px}
      .download-intro,.download-options{padding:28px 22px}.download-card{align-items:flex-start}.download-card .download-btn{margin-left:auto}
      .faq-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:6px 0}
    }