:root{
      --theme:#0B3D91;
      --template-theme:"{主题色}";
      --theme-dark:#06275f;
      --theme-deep:#041b43;
      --theme-light:#eaf2ff;
      --accent:#16a4d8;
      --text:#14213d;
      --muted:#63708a;
      --line:#dce5f2;
      --surface:#f5f8fc;
      --white:#fff;
      --success:#16865a;
      --shadow:0 18px 50px rgba(11,61,145,.12);
      --radius:18px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:#fff;
      font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;
      line-height:1.7;
      overflow-x:hidden;
    }
    body,button,input,select,textarea{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{
      position:relative;
      z-index:60;
      color:#dce9ff;
      background:var(--theme-deep);
      font-size:13px;
    }
    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-right{display:flex;align-items:center;gap:22px}
    .topbar a{transition:color .2s ease}
    .topbar a:hover{color:#fff}

    .header{
      position:relative;
      z-index:50;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 18px rgba(4,27,67,.04);
    }
    .header-inner{
      min-height:80px;
      display:flex;
      align-items:center;
      gap:26px;
    }
    .logo{
      min-width:178px;
      display:flex;
      align-items:center;
      gap:11px;
      color:var(--theme);
      font-size:20px;
      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;
      padding:0 13px;
      display:flex;
      align-items:center;
      color:#26344e;
      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;
      content:"";
      background:var(--theme);
      border-radius:4px 4px 0 0;
      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:25px}
    .nav-link.has-arrow::before{
      position:absolute;
      right:10px;
      top:50%;
      width:6px;
      height:6px;
      content:"";
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:translateY(-70%) rotate(45deg);
      transition:transform .2s ease;
    }
    .nav-item:hover .nav-link.has-arrow::before,
    .nav-item:focus-within .nav-link.has-arrow::before{
      transform:translateY(-25%) rotate(225deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      left:50%;
      visibility:hidden;
      opacity:0;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:0 22px 60px rgba(4,27,67,.16);
      transform:translate(-50%,10px);
      transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
      pointer-events:none;
    }
    .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:translate(-50%,0);
      pointer-events:auto;
    }
    .dropdown-panel{
      width:270px;
      padding:10px;
      border-radius:0 0 14px 14px;
    }
    .dropdown-panel>a{
      display:block;
      padding:10px 12px;
      color:#394760;
      border-radius:8px;
      font-size:14px;
    }
    .dropdown-panel>a:hover{color:var(--theme);background:var(--theme-light)}
    .mega-menu{
      width:min(920px,calc(100vw - 40px));
      padding:20px;
      border-radius:0 0 18px 18px;
    }
    .mega-heading{
      margin-bottom:14px;
      padding-bottom:12px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      border-bottom:1px solid var(--line);
    }
    .mega-heading strong{font-size:17px;color:var(--theme-dark)}
    .mega-heading>a{color:var(--theme);font-size:13px;font-weight:700}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      padding:11px;
      display:flex;
      align-items:center;
      gap:11px;
      border:1px solid transparent;
      border-radius:12px;
      transition:background .2s ease,border-color .2s ease,transform .2s ease;
    }
    .mega-card:hover{
      background:var(--theme-light);
      border-color:#c9dcfb;
      transform:translateY(-2px);
    }
    .mega-card img{
      width:45px;
      height:45px;
      flex:0 0 45px;
      object-fit:cover;
      border-radius:10px;
      background:#eef3fa;
    }
    .mega-card span{min-width:0;display:block}
    .mega-card b{
      display:block;
      overflow:hidden;
      color:#172541;
      font-size:14px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card small{
      display:block;
      overflow:hidden;
      color:var(--muted);
      font-size:12px;
      line-height:1.55;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-footer{
      margin-top:14px;
      padding:11px 13px;
      display:block;
      color:var(--theme);
      background:#f3f7fd;
      border-radius:9px;
      font-size:13px;
      font-weight:700;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
      white-space:nowrap;
    }
    .member-link{
      color:var(--theme);
      font-size:14px;
      font-weight:700;
    }
    .open-account{
      padding:9px 16px;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      font-size:14px;
      font-weight:700;
      box-shadow:0 8px 18px rgba(11,61,145,.2);
      transition:background .2s ease,transform .2s ease;
    }
    .open-account:hover{background:var(--theme-dark);transform:translateY(-1px)}
    .hamburger{
      width:42px;
      height:42px;
      padding:9px;
      display:none;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:5px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:9px;
      cursor:pointer;
    }
    .hamburger span{
      width:21px;
      height:2px;
      display:block;
      background:var(--theme-dark);
      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:80;
      inset:0;
      visibility:hidden;
      opacity:0;
      background:rgba(4,18,43,.58);
      backdrop-filter:blur(3px);
      transition:opacity .25s ease,visibility .25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      z-index:90;
      top:0;
      right:0;
      bottom:0;
      width:min(390px,90vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(4,27,67,.2);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      padding:14px 18px;
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      background:var(--theme);
    }
    .drawer-head>a{
      padding:7px 12px;
      border:1px solid rgba(255,255,255,.34);
      border-radius:8px;
      font-size:14px;
    }
    .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:49px;
      padding:11px 12px;
      display:flex;
      align-items:center;
      color:#24324d;
      background:transparent;
      border:0;
      border-bottom:1px solid #edf1f6;
      text-align:left;
      font-weight:700;
      cursor:pointer;
    }
    .drawer-toggle{position:relative}
    .drawer-toggle::after{
      position:absolute;
      right:15px;
      width:8px;
      height:8px;
      content:"";
      border-right:2px solid var(--theme);
      border-bottom:2px solid var(--theme);
      transform:rotate(45deg);
      transition:transform .2s ease;
    }
    .drawer-toggle.active::after{transform:rotate(225deg)}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      background:#f5f8fd;
      border-radius:0 0 9px 9px;
      transition:max-height .3s ease;
    }
    .drawer-submenu.open{max-height:780px}
    .drawer-submenu a{
      padding:9px 17px;
      display:block;
      color:#56647c;
      border-bottom:1px solid #e8eef7;
      font-size:14px;
    }
    .drawer-submenu a:hover{color:var(--theme);background:#eaf2ff}

    .target-page-main{min-width:0}
    .download-page-main .download-hero{
      position:relative;
      overflow:hidden;
      padding:78px 0 72px;
      color:#fff;
      background:
        radial-gradient(circle at 15% 20%,rgba(22,164,216,.32),transparent 28%),
        radial-gradient(circle at 84% 72%,rgba(87,146,255,.27),transparent 30%),
        linear-gradient(145deg,var(--theme-deep),var(--theme) 58%,#126cb1);
    }
    .download-page-main .download-hero::before,
    .download-page-main .download-hero::after{
      position:absolute;
      content:"";
      border:1px solid rgba(255,255,255,.13);
      border-radius:50%;
    }
    .download-page-main .download-hero::before{
      width:430px;
      height:430px;
      top:-250px;
      right:6%;
    }
    .download-page-main .download-hero::after{
      width:250px;
      height:250px;
      bottom:-170px;
      left:7%;
    }
    .download-page-main .hero-inner{
      position:relative;
      z-index:1;
      max-width:850px;
      text-align:center;
    }
    .download-page-main .eyebrow{
      margin-bottom:14px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#d7efff;
      font-size:14px;
      font-weight:700;
      letter-spacing:.08em;
    }
    .download-page-main .eyebrow::before,
    .download-page-main .eyebrow::after{
      width:25px;
      height:1px;
      content:"";
      background:rgba(255,255,255,.5);
    }
    .download-page-main h1{
      max-width:780px;
      margin:0 auto 18px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.16;
      letter-spacing:-.04em;
    }
    .download-page-main .hero-copy{
      max-width:700px;
      margin:0 auto;
      color:#dce9ff;
      font-size:17px;
    }
    .download-page-main .hero-actions{
      margin-top:30px;
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:12px;
    }
    .download-page-main .primary-btn,
    .download-page-main .secondary-btn{
      min-height:48px;
      padding:11px 23px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:10px;
      font-weight:800;
      transition:transform .2s ease,background .2s ease;
    }
    .download-page-main .primary-btn{
      color:var(--theme);
      background:#fff;
      box-shadow:0 12px 30px rgba(0,0,0,.14);
    }
    .download-page-main .secondary-btn{
      color:#fff;
      background:rgba(255,255,255,.09);
      border:1px solid rgba(255,255,255,.35);
    }
    .download-page-main .primary-btn:hover,
    .download-page-main .secondary-btn:hover{transform:translateY(-2px)}
    .download-page-main .hero-trust{
      margin:34px auto 0;
      padding:13px 18px;
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:12px 28px;
      color:#e9f4ff;
      background:rgba(4,27,67,.24);
      border:1px solid rgba(255,255,255,.15);
      border-radius:12px;
      font-size:14px;
    }
    .download-page-main .hero-trust span::before{
      margin-right:7px;
      content:"✓";
      color:#74e7c0;
      font-weight:900;
    }

    .download-page-main .section{padding:82px 0}
    .download-page-main .section-soft{background:var(--surface)}
    .download-page-main .section-head{
      max-width:720px;
      margin:0 auto 38px;
      text-align:center;
    }
    .download-page-main .section-kicker{
      margin-bottom:8px;
      display:block;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
      letter-spacing:.12em;
    }
    .download-page-main .section-head h2{
      margin:0 0 12px;
      color:var(--theme-deep);
      font-size:clamp(27px,4vw,39px);
      line-height:1.25;
    }
    .download-page-main .section-head p{margin:0;color:var(--muted)}
    .download-page-main .platform-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .download-page-main .platform-card{
      position:relative;
      min-width:0;
      padding:28px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 10px 32px rgba(11,61,145,.07);
      transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .download-page-main .platform-card:hover{
      border-color:#a9c7f4;
      box-shadow:var(--shadow);
      transform:translateY(-5px);
    }
    .download-page-main .platform-icon{
      width:58px;
      height:58px;
      margin-bottom:20px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(145deg,var(--theme),var(--accent));
      border-radius:16px;
      box-shadow:0 12px 24px rgba(11,61,145,.2);
      font-size:25px;
      font-weight:900;
    }
    .download-page-main .platform-card h3{
      margin:0 0 8px;
      color:var(--theme-deep);
      font-size:21px;
    }
    .download-page-main .platform-card p{
      min-height:78px;
      margin:0 0 18px;
      color:var(--muted);
      font-size:14px;
    }
    .download-page-main .requirements{
      margin:0 0 20px;
      padding:0;
      list-style:none;
    }
    .download-page-main .requirements li{
      padding:7px 0;
      color:#41506a;
      border-top:1px solid #edf1f6;
      font-size:13px;
    }
    .download-page-main .requirements strong{color:#26344e}
    .download-page-main .card-action{
      width:100%;
      min-height:45px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      font-weight:800;
      transition:background .2s ease;
    }
    .download-page-main .card-action:hover{background:var(--theme-dark)}
    .download-page-main .platform-note{
      margin-top:20px;
      padding:16px 18px;
      color:#56647b;
      background:#edf4ff;
      border-left:4px solid var(--theme);
      border-radius:9px;
      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:35px;
      right:11%;
      left:11%;
      height:2px;
      content:"";
      background:linear-gradient(90deg,#b9d2f5,var(--theme),#b9d2f5);
    }
    .download-page-main .step-card{
      position:relative;
      z-index:1;
      padding:0 14px;
      text-align:center;
    }
    .download-page-main .step-number{
      width:70px;
      height:70px;
      margin:0 auto 20px;
      display:grid;
      place-items:center;
      color:#fff;
      background:var(--theme);
      border:8px solid #e7f0ff;
      border-radius:50%;
      box-shadow:0 6px 18px rgba(11,61,145,.17);
      font-size:18px;
      font-weight:900;
    }
    .download-page-main .step-card h3{
      margin:0 0 8px;
      color:var(--theme-deep);
      font-size:18px;
    }
    .download-page-main .step-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }

    .download-page-main .safety-panel{
      padding:36px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:35px;
      align-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--theme-deep),var(--theme));
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .download-page-main .safety-panel h2{
      margin:0 0 12px;
      font-size:30px;
      line-height:1.3;
    }
    .download-page-main .safety-panel p{margin:0;color:#dce9ff}
    .download-page-main .safety-list{
      margin:0;
      padding:0;
      display:grid;
      gap:10px;
      list-style:none;
    }
    .download-page-main .safety-list li{
      padding:11px 13px;
      display:flex;
      align-items:center;
      gap:10px;
      background:rgba(255,255,255,.09);
      border:1px solid rgba(255,255,255,.14);
      border-radius:9px;
      font-size:14px;
    }
    .download-page-main .safety-list li::before{
      width:24px;
      height:24px;
      display:grid;
      flex:0 0 24px;
      place-items:center;
      content:"✓";
      color:var(--theme-deep);
      background:#86e8c4;
      border-radius:50%;
      font-size:13px;
      font-weight:900;
    }

    .download-page-main .faq-list{
      max-width:880px;
      margin:0 auto;
      display:grid;
      gap:12px;
    }
    .download-page-main .faq-item{
      overflow:hidden;
      background:#fff;
      border:1px solid var(--line);
      border-radius:13px;
      box-shadow:0 7px 22px rgba(4,27,67,.04);
    }
    .download-page-main .faq-item summary{
      position:relative;
      padding:18px 52px 18px 20px;
      color:#24324d;
      font-weight:800;
      cursor:pointer;
      list-style:none;
    }
    .download-page-main .faq-item summary::-webkit-details-marker{display:none}
    .download-page-main .faq-item summary::after{
      position:absolute;
      top:50%;
      right:20px;
      width:26px;
      height:26px;
      display:grid;
      place-items:center;
      content:"+";
      color:var(--theme);
      background:var(--theme-light);
      border-radius:50%;
      transform:translateY(-50%);
      font-size:20px;
    }
    .download-page-main .faq-item[open] summary::after{content:"−"}
    .download-page-main .faq-item p{
      margin:0;
      padding:0 20px 20px;
      color:var(--muted);
      font-size:14px;
    }
    .download-page-main .final-cta{
      padding:70px 0;
      text-align:center;
      background:linear-gradient(180deg,#fff,#eef5ff);
    }
    .download-page-main .final-cta-box{
      padding:42px 28px;
      background:#fff;
      border:1px solid #d8e5f7;
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .download-page-main .final-cta h2{
      margin:0 0 10px;
      color:var(--theme-deep);
      font-size:32px;
    }
    .download-page-main .final-cta p{
      max-width:670px;
      margin:0 auto 23px;
      color:var(--muted);
    }
    .download-page-main .final-cta .primary-btn{
      color:#fff;
      background:var(--theme);
    }

    .footer{
      padding:58px 0 0;
      color:#cbd7ea;
      background:var(--theme-deep);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr 1fr 1fr 1fr;
      gap:42px;
    }
    .footer-brand{
      margin-bottom:13px;
      color:#fff;
      font-size:23px;
      font-weight:900;
    }
    .footer h3{
      margin:0 0 17px;
      color:#fff;
      font-size:16px;
    }
    .footer p{margin:0 0 9px;font-size:14px}
    .footer-grid>div>a{
      margin-bottom:9px;
      display:block;
      color:#cbd7ea;
      font-size:14px;
      transition:color .2s ease,transform .2s ease;
    }
    .footer-grid>div>a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{
      margin-top:42px;
      padding:20px 0;
      color:#9fb0c9;
      border-top:1px solid rgba(255,255,255,.12);
      text-align:center;
      font-size:13px;
    }

    @media (max-width:1100px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-inner{min-height:72px}
      .header-btns{margin-left:auto}
      .download-page-main .platform-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .download-page-main .platform-card:last-child{grid-column:1/-1}
      .download-page-main .platform-card p{min-height:0}
    }
    @media (max-width:850px){
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-right{gap:7px;flex-direction:column;align-items:flex-end}
      .download-page-main .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 18px}
      .download-page-main .steps::before{display:none}
      .download-page-main .safety-panel{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:620px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{display:block;text-align:center}
      .topbar-right{margin-top:5px;align-items:center}
      .logo{min-width:0;font-size:17px}
      .logo img{width:37px;height:37px}
      .member-link{display:none}
      .open-account{padding:8px 12px}
      .download-page-main .download-hero{padding:58px 0}
      .download-page-main .hero-copy{font-size:15px}
      .download-page-main .hero-actions{flex-direction:column}
      .download-page-main .primary-btn,
      .download-page-main .secondary-btn{width:100%}
      .download-page-main .hero-trust{display:grid;gap:7px;text-align:left}
      .download-page-main .section{padding:60px 0}
      .download-page-main .platform-grid{grid-template-columns:1fr}
      .download-page-main .platform-card:last-child{grid-column:auto}
      .download-page-main .platform-card{padding:22px}
      .download-page-main .steps{grid-template-columns:1fr}
      .download-page-main .step-card{padding:0 20px}
      .download-page-main .safety-panel{padding:26px 21px}
      .download-page-main .safety-panel h2{font-size:25px}
      .download-page-main .final-cta{padding:55px 0}
      .download-page-main .final-cta-box{padding:32px 19px}
      .download-page-main .final-cta h2{font-size:26px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
    }