:root{
      --theme:#0B3D91;
      --theme-token:{主题色};
      --theme-dark:#072d70;
      --theme-soft:#eaf1fc;
      --accent:#d81b60;
      --text:#172033;
      --muted:#687386;
      --line:#e3e8f0;
      --surface:#ffffff;
      --background:#f5f7fb;
      --success:#16845b;
      --shadow:0 16px 42px rgba(17,38,74,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:var(--background);
      font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;
      line-height:1.65;
      -webkit-font-smoothing:antialiased;
    }
    body,button,input{font:inherit}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button{color:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{
      color:#dce7fb;
      background:#071a3b;
      font-size:13px;
    }
    .topbar .container{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-links{display:flex;align-items:center;gap:22px}
    .topbar a{transition:color .2s ease}
    .topbar a:hover{color:#fff}
    .header{
      position:relative;
      z-index:100;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 18px rgba(20,39,75,.04);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      min-width:180px;
      display:flex;
      align-items:center;
      gap:11px;
      color:var(--theme);
      font-size:19px;
      font-weight:800;
      white-space:nowrap;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:9px;
    }
    .main-nav{flex:1;align-self:stretch}
    .nav-list{
      height:100%;
      margin:0;
      padding:0;
      display:flex;
      align-items:stretch;
      justify-content:center;
      list-style:none;
    }
    .nav-item{
      position:relative;
      display:flex;
      align-items:stretch;
    }
    .nav-link{
      position:relative;
      display:flex;
      align-items:center;
      padding:0 13px;
      color:#303a4d;
      font-size:15px;
      font-weight:600;
      white-space:nowrap;
      transition:color .2s ease;
    }
    .nav-link::after{
      position:absolute;
      right:13px;
      bottom:0;
      left:13px;
      height:3px;
      border-radius:3px 3px 0 0;
      background:var(--theme);
      content:"";
      transform:scaleX(0);
      transition:transform .2s ease;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .nav-link:hover::after,.nav-item:focus-within>.nav-link::after{transform:scaleX(1)}
    .nav-link.has-arrow{padding-right:27px}
    .nav-link.has-arrow::before{
      position:absolute;
      top:50%;
      right:12px;
      width:6px;
      height:6px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      content:"";
      transform:translateY(-70%) rotate(45deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      left:0;
      visibility:hidden;
      opacity:0;
      transform:translateY(10px);
      pointer-events:none;
      transition:opacity .2s ease,transform .2s ease,visibility .2s;
    }
    .dropdown-panel::before,.mega-menu::before{
      position:absolute;
      right:0;
      bottom:100%;
      left:0;
      height:12px;
      content:"";
    }
    .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;
      transform:translateY(0);
      pointer-events:auto;
    }
    .dropdown-panel{
      width:330px;
      padding:20px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 16px 16px;
      box-shadow:var(--shadow);
    }
    .mega-menu{
      width:760px;
      padding:24px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 18px 18px;
      box-shadow:var(--shadow);
    }
    .nav-item:nth-last-child(-n+3) .mega-menu{right:0;left:auto}
    .mega-grid{
      display:grid;
      grid-template-columns:minmax(0,1.25fr) minmax(220px,.75fr);
      gap:24px;
    }
    .mega-column{min-width:0}
    .drop-title,.mega-title{
      margin:0 0 13px;
      color:var(--theme);
      font-size:14px;
      font-weight:800;
    }
    .drop-list{display:grid;gap:5px}
    .drop-list a{
      overflow:hidden;
      padding:8px 10px;
      color:#4d586b;
      border-radius:8px;
      font-size:13px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .drop-list a:hover{color:var(--theme);background:var(--theme-soft)}
    .mega-items{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
    .mega-card{
      min-width:0;
      display:flex;
      align-items:center;
      gap:10px;
      padding:10px;
      background:#f8fafc;
      border:1px solid #edf0f5;
      border-radius:11px;
      transition:border-color .2s ease,transform .2s ease;
    }
    .mega-card:hover{border-color:#bfd1ee;transform:translateY(-2px)}
    .mega-card img{
      flex:0 0 auto;
      width:38px;
      height:38px;
      object-fit:cover;
      background:#fff;
      border-radius:8px;
    }
    .mega-card span{min-width:0;display:block}
    .mega-card strong,.mega-card small{
      overflow:hidden;
      display:block;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card strong{font-size:13px}
    .mega-card small{margin-top:2px;color:var(--muted);font-size:11px}
    .mega-footer{
      display:inline-flex;
      align-items:center;
      margin-top:13px;
      color:var(--theme);
      font-size:13px;
      font-weight:700;
    }
    .mega-footer::after{margin-left:5px;content:"→"}
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
      white-space:nowrap;
    }
    .member-link,.open-account{
      display:inline-flex;
      min-height:40px;
      align-items:center;
      justify-content:center;
      padding:0 16px;
      border-radius:9px;
      font-size:14px;
      font-weight:700;
    }
    .member-link{color:var(--theme);border:1px solid #c8d6ed;background:#fff}
    .open-account{color:#fff;background:var(--theme)}
    .member-link:hover{background:var(--theme-soft)}
    .open-account:hover{background:var(--theme-dark)}
    .hamburger{
      width:42px;
      height:42px;
      display:none;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      padding:0;
      background:#fff;
      border:1px solid var(--line);
      border-radius:9px;
      cursor:pointer;
    }
    .hamburger span{
      width:20px;
      height:2px;
      background:var(--text);
      transition:transform .2s ease,opacity .2s ease;
    }
    .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;
      z-index:998;
      inset:0;
      visibility:hidden;
      opacity:0;
      background:rgba(5,16,36,.56);
      transition:opacity .25s ease,visibility .25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      z-index:999;
      top:0;
      right:0;
      bottom:0;
      width:min(390px,90vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 45px rgba(6,25,59,.18);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px 18px;
      color:#fff;
      background:var(--theme);
    }
    .drawer-head>a{
      padding:7px 11px;
      border:1px solid rgba(255,255,255,.38);
      border-radius:7px;
      font-size:13px;
    }
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      color:#fff;
      background:rgba(255,255,255,.12);
      border:0;
      border-radius:50%;
      font-size:27px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:14px}
    .drawer-link,.drawer-toggle{
      width:100%;
      min-height:48px;
      display:flex;
      align-items:center;
      padding:0 13px;
      background:none;
      border:0;
      border-bottom:1px solid #edf0f5;
      font-size:15px;
      font-weight:700;
      text-align:left;
      cursor:pointer;
    }
    .drawer-toggle{position:relative}
    .drawer-toggle::after{
      position:absolute;
      right:14px;
      content:"+";
      color:var(--theme);
      font-size:20px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      padding:0 12px;
      background:#f7f9fc;
      transition:max-height .3s ease,padding .3s ease;
    }
    .drawer-submenu.open{max-height:680px;padding:8px 12px}
    .drawer-submenu a{
      display:block;
      padding:9px 10px;
      color:#566175;
      border-bottom:1px dashed #e1e6ee;
      font-size:13px;
    }
    .footer{
      padding:58px 0 0;
      color:#ced8e9;
      background:#071a3b;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr 1fr 1fr 1fr;
      gap:45px;
      padding-bottom:42px;
    }
    .footer h3{
      margin:0 0 16px;
      color:#fff;
      font-size:15px;
    }
    .footer strong{color:#fff;font-size:20px}
    .footer p{margin:9px 0;color:#aebbd0;font-size:13px}
    .footer-grid>div>a{
      display:block;
      margin:8px 0;
      color:#bcc8da;
      font-size:13px;
    }
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{
      min-height:64px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
      color:#8898b1;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:12px;
    }
    .download-page-main{overflow:hidden;background:#f5f7fb}
    .download-page-main .download-hero{
      position:relative;
      padding:74px 0 68px;
      color:#fff;
      background:
        radial-gradient(circle at 15% 10%,rgba(216,27,96,.28),transparent 30%),
        radial-gradient(circle at 88% 75%,rgba(64,135,255,.27),transparent 28%),
        linear-gradient(145deg,#071a3b 0%,#0B3D91 56%,#12336a 100%);
    }
    .download-page-main .download-hero::before{
      position:absolute;
      inset:0;
      opacity:.28;
      background-image:
        linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
      background-size:42px 42px;
      content:"";
      mask-image:linear-gradient(to bottom,#000,transparent);
    }
    .download-page-main .download-hero-inner{
      position:relative;
      z-index:1;
      max-width:840px;
      margin:0 auto;
      text-align:center;
    }
    .download-page-main .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:18px;
      padding:7px 14px;
      color:#ffe4ef;
      background:rgba(216,27,96,.2);
      border:1px solid rgba(255,255,255,.2);
      border-radius:999px;
      font-size:13px;
      font-weight:700;
    }
    .download-page-main .eyebrow::before{
      width:7px;
      height:7px;
      background:#ff6ba5;
      border-radius:50%;
      content:"";
      box-shadow:0 0 0 5px rgba(255,107,165,.15);
    }
    .download-page-main h1{
      margin:0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.15;
      letter-spacing:-1px;
    }
    .download-page-main .hero-intro{
      max-width:720px;
      margin:20px auto 0;
      color:#dbe7fb;
      font-size:17px;
    }
    .download-page-main .hero-actions{
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:12px;
      margin-top:30px;
    }
    .download-page-main .primary-action,
    .download-page-main .secondary-action{
      min-height:50px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:0 23px;
      border-radius:11px;
      font-size:15px;
      font-weight:800;
      transition:transform .2s ease,background .2s ease;
    }
    .download-page-main .primary-action{
      color:#fff;
      background:var(--accent);
      box-shadow:0 12px 28px rgba(216,27,96,.3);
    }
    .download-page-main .secondary-action{
      color:#fff;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.3);
    }
    .download-page-main .primary-action:hover,
    .download-page-main .secondary-action:hover{transform:translateY(-2px)}
    .download-page-main .hero-notes{
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:20px;
      margin-top:26px;
      color:#bfcde3;
      font-size:13px;
    }
    .download-page-main .hero-notes span::before{
      margin-right:6px;
      color:#75dfb5;
      content:"✓";
      font-weight:800;
    }
    .download-page-main .section{padding:76px 0}
    .download-page-main .section-white{background:#fff}
    .download-page-main .section-heading{
      max-width:710px;
      margin:0 auto 34px;
      text-align:center;
    }
    .download-page-main .section-kicker{
      margin:0 0 7px;
      color:var(--accent);
      font-size:13px;
      font-weight:800;
      letter-spacing:1px;
    }
    .download-page-main .section-heading h2{
      margin:0;
      color:#13213a;
      font-size:clamp(27px,3vw,38px);
      line-height:1.25;
    }
    .download-page-main .section-heading p{
      margin:13px 0 0;
      color:var(--muted);
      font-size:15px;
    }
    .download-page-main .platform-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:22px;
    }
    .download-page-main .platform-card{
      position:relative;
      min-width:0;
      padding:28px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      box-shadow:0 12px 34px rgba(23,42,75,.06);
      transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
    }
    .download-page-main .platform-card:hover{
      border-color:#b7cae8;
      box-shadow:0 18px 40px rgba(23,42,75,.11);
      transform:translateY(-5px);
    }
    .download-page-main .platform-icon{
      width:58px;
      height:58px;
      display:grid;
      place-items:center;
      margin-bottom:20px;
      color:var(--theme);
      background:var(--theme-soft);
      border-radius:16px;
      font-size:24px;
      font-weight:900;
    }
    .download-page-main .platform-card:nth-child(2) .platform-icon{
      color:var(--accent);
      background:#fff0f6;
    }
    .download-page-main .platform-card:nth-child(3) .platform-icon{
      color:var(--success);
      background:#eaf8f2;
    }
    .download-page-main .platform-card h3{
      margin:0 0 9px;
      font-size:21px;
    }
    .download-page-main .platform-card p{
      min-height:76px;
      margin:0 0 18px;
      color:var(--muted);
      font-size:14px;
    }
    .download-page-main .feature-list{
      margin:0 0 22px;
      padding:0;
      list-style:none;
    }
    .download-page-main .feature-list li{
      position:relative;
      margin:8px 0;
      padding-left:20px;
      color:#465267;
      font-size:13px;
    }
    .download-page-main .feature-list li::before{
      position:absolute;
      left:0;
      color:var(--success);
      content:"✓";
      font-weight:900;
    }
    .download-page-main .card-action{
      width:100%;
      min-height:44px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      font-size:14px;
      font-weight:800;
    }
    .download-page-main .card-action:hover{background:var(--theme-dark)}
    .download-page-main .security-panel{
      display:grid;
      grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);
      gap:50px;
      align-items:center;
      padding:42px;
      background:linear-gradient(135deg,#fff,#eef4fd);
      border:1px solid #dce6f4;
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .download-page-main .security-copy h2{
      margin:0 0 14px;
      font-size:32px;
      line-height:1.25;
    }
    .download-page-main .security-copy>p{margin:0;color:var(--muted)}
    .download-page-main .security-points{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:12px;
      margin-top:25px;
    }
    .download-page-main .security-point{
      padding:15px;
      background:#fff;
      border:1px solid #e1e8f2;
      border-radius:12px;
    }
    .download-page-main .security-point strong{
      display:block;
      color:var(--theme);
      font-size:14px;
    }
    .download-page-main .security-point span{
      display:block;
      margin-top:4px;
      color:var(--muted);
      font-size:12px;
    }
    .download-page-main .check-card{
      padding:26px;
      color:#e5edfa;
      background:#081d43;
      border-radius:20px;
    }
    .download-page-main .check-card h3{margin:0 0 17px;color:#fff;font-size:19px}
    .download-page-main .check-card ol{margin:0;padding-left:21px}
    .download-page-main .check-card li{margin:11px 0;padding-left:5px;font-size:14px}
    .download-page-main .steps{
      position:relative;
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:18px;
    }
    .download-page-main .steps::before{
      position:absolute;
      top:29px;
      right:10%;
      left:10%;
      height:2px;
      background:#cad8eb;
      content:"";
    }
    .download-page-main .step{
      position:relative;
      z-index:1;
      text-align:center;
    }
    .download-page-main .step-number{
      width:58px;
      height:58px;
      display:grid;
      place-items:center;
      margin:0 auto 17px;
      color:#fff;
      background:var(--theme);
      border:7px solid #e9f0fb;
      border-radius:50%;
      font-size:15px;
      font-weight:900;
    }
    .download-page-main .step h3{margin:0 0 7px;font-size:17px}
    .download-page-main .step p{margin:0;color:var(--muted);font-size:13px}
    .download-page-main .faq-list{
      max-width:880px;
      margin:0 auto;
      display:grid;
      gap:12px;
    }
    .download-page-main .faq-list details{
      background:#fff;
      border:1px solid var(--line);
      border-radius:14px;
      box-shadow:0 8px 24px rgba(19,39,72,.04);
    }
    .download-page-main .faq-list summary{
      position:relative;
      padding:19px 52px 19px 21px;
      font-weight:800;
      cursor:pointer;
      list-style:none;
    }
    .download-page-main .faq-list summary::-webkit-details-marker{display:none}
    .download-page-main .faq-list summary::after{
      position:absolute;
      top:17px;
      right:20px;
      color:var(--theme);
      content:"+";
      font-size:23px;
      font-weight:400;
    }
    .download-page-main .faq-list details[open] summary::after{content:"−"}
    .download-page-main .faq-list p{
      margin:0;
      padding:0 21px 20px;
      color:var(--muted);
      font-size:14px;
    }
    .download-page-main .download-cta{
      padding:0 0 78px;
      background:#fff;
    }
    .download-page-main .cta-box{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:35px;
      padding:38px 42px;
      color:#fff;
      background:linear-gradient(125deg,var(--theme),#102f68);
      border-radius:23px;
      box-shadow:0 20px 42px rgba(11,61,145,.22);
    }
    .download-page-main .cta-box h2{margin:0 0 7px;font-size:28px}
    .download-page-main .cta-box p{margin:0;color:#d8e4f7;font-size:14px}
    .download-page-main .cta-box .primary-action{flex:0 0 auto}
    @media (max-width:1120px){
      .main-nav{display:none}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .hamburger{display:flex}
    }
    @media (max-width:900px){
      .download-page-main .platform-grid{grid-template-columns:1fr}
      .download-page-main .platform-card p{min-height:0}
      .download-page-main .security-panel{grid-template-columns:1fr;gap:28px;padding:30px}
      .download-page-main .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 18px}
      .download-page-main .steps::before{display:none}
      .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{min-height:42px;justify-content:center}
      .topbar .container>span{display:none}
      .topbar-links{width:100%;justify-content:space-between;gap:10px}
      .topbar-links a{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      .header-inner{min-height:68px;gap:10px}
      .logo{min-width:0;max-width:150px;font-size:16px}
      .logo img{width:36px;height:36px}
      .header-btns{gap:6px}
      .member-link{display:none}
      .open-account{min-height:38px;padding:0 12px}
      .hamburger{width:38px;height:38px}
      .download-page-main .download-hero{padding:55px 0}
      .download-page-main .hero-intro{font-size:15px}
      .download-page-main .hero-actions{flex-direction:column}
      .download-page-main .primary-action,
      .download-page-main .secondary-action{width:100%}
      .download-page-main .hero-notes{align-items:flex-start;flex-direction:column;gap:7px;text-align:left}
      .download-page-main .section{padding:58px 0}
      .download-page-main .platform-card{padding:23px}
      .download-page-main .security-panel{padding:22px}
      .download-page-main .security-copy h2{font-size:27px}
      .download-page-main .security-points{grid-template-columns:1fr}
      .download-page-main .steps{grid-template-columns:1fr}
      .download-page-main .step{display:grid;grid-template-columns:50px 1fr;text-align:left;column-gap:14px}
      .download-page-main .step-number{width:50px;height:50px;grid-row:1/3;margin:0}
      .download-page-main .step h3{align-self:end}
      .download-page-main .cta-box{align-items:flex-start;flex-direction:column;padding:28px 23px}
      .download-page-main .cta-box .primary-action{width:100%}
      .footer{padding-top:44px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-bottom{align-items:flex-start;flex-direction:column;justify-content:center;padding:17px 0}
    }