:root{
      --theme:#0B3D91;
      --system-theme:{主题色};
      --theme-dark:#06265d;
      --theme-soft:#eaf1ff;
      --amber:#c88b2b;
      --sand:#f7f0e4;
      --coffee:#3d2a1f;
      --ink:#172033;
      --muted:#687386;
      --line:#e4e9f0;
      --white:#fff;
      --shadow:0 18px 50px rgba(15,36,73,.12);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#f7f9fc;
      font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.65;
      -webkit-font-smoothing:antialiased;
    }
    body,button,input{font:inherit}
    img{max-width:100%;display:block}
    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:#dbe7ff;
      background:var(--theme-dark);
      font-size:13px;
    }
    .topbar .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar a{color:#fff}
    .topbar a:hover{text-decoration:underline}

    .header{
      position:relative;
      z-index:50;
      border-bottom:1px solid rgba(11,61,145,.1);
      background:rgba(255,255,255,.98);
      box-shadow:0 5px 22px rgba(20,38,70,.05);
    }
    .header-inner{
      position:relative;
      min-height:78px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .logo{
      flex:0 0 auto;
      min-width:150px;
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--theme-dark);
      font-size:19px;
      font-weight:800;
      letter-spacing:.01em;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{align-self:stretch;flex:1;min-width:0}
    .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:#26344d;
      font-size:15px;
      font-weight:700;
      white-space:nowrap;
      transition:.2s ease;
    }
    .nav-link::after{
      content:"";
      position:absolute;
      right:13px;
      bottom:14px;
      left:13px;
      height:2px;
      background:var(--theme);
      transform:scaleX(0);
      transition:transform .2s ease;
    }
    .nav-link.has-arrow{padding-right:25px}
    .nav-link.has-arrow::before{
      content:"";
      position:absolute;
      top:50%;
      right:11px;
      width:6px;
      height:6px;
      margin-top:-5px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg);
    }
    .nav-item:hover>.nav-link,
    .nav-item:focus-within>.nav-link{color:var(--theme)}
    .nav-item:hover>.nav-link::after,
    .nav-item:focus-within>.nav-link::after{transform:scaleX(1)}

    .dropdown-panel,
    .mega-menu{
      position:absolute;
      top:100%;
      left:50%;
      z-index:70;
      visibility:hidden;
      opacity:0;
      transform:translate(-50%,10px);
      pointer-events:none;
      border:1px solid var(--line);
      border-radius:0 0 16px 16px;
      background:#fff;
      box-shadow:0 22px 50px rgba(16,40,79,.16);
      transition:opacity .2s ease,transform .2s ease,visibility .2s;
    }
    .dropdown-panel::before,
    .mega-menu::before{
      content:"";
      position:absolute;
      right:0;
      bottom:100%;
      left:0;
      height:8px;
    }
    .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:320px;
      padding:18px;
    }
    .mega-menu{
      width:min(870px,calc(100vw - 48px));
      padding:20px;
    }
    .nav-item:nth-last-child(-n+3) .mega-menu{
      left:auto;
      right:-100px;
      transform:translate(0,10px);
    }
    .nav-item:nth-last-child(-n+3):hover>.mega-menu,
    .nav-item:nth-last-child(-n+3):focus-within>.mega-menu{
      transform:translate(0,0);
    }
    .drop-title,.mega-title{
      display:block;
      margin-bottom:12px;
      color:var(--theme-dark);
      font-size:15px;
    }
    .drop-list{
      display:flex;
      flex-wrap:wrap;
      gap:7px;
    }
    .drop-list a{
      flex:1 1 130px;
      padding:9px 11px;
      overflow:hidden;
      border-radius:9px;
      background:#f5f8fd;
      color:#40506a;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .drop-list a:hover{color:var(--theme);background:var(--theme-soft)}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:11px;
    }
    .mega-card{
      min-width:0;
      padding:12px;
      display:grid;
      grid-template-columns:50px minmax(0,1fr);
      align-items:center;
      gap:4px 10px;
      border:1px solid #edf0f5;
      border-radius:12px;
      background:#fff;
      transition:.2s ease;
    }
    .mega-card:hover{
      border-color:#b8caec;
      background:#f8fbff;
      transform:translateY(-2px);
    }
    .mega-card img{
      grid-row:1/4;
      width:50px;
      height:50px;
      object-fit:cover;
      border-radius:9px;
      background:#f0f3f8;
    }
    .mega-card strong,
    .mega-card small{
      min-width:0;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card strong{color:#213351;font-size:14px}
    .mega-card small{color:var(--muted);font-size:11px}
    .mega-footer{
      margin-top:14px;
      padding:10px 12px;
      display:block;
      border-radius:9px;
      color:#fff;
      background:var(--theme);
      text-align:center;
      font-size:14px;
      font-weight:700;
    }
    .mega-footer:hover{background:var(--theme-dark)}

    .header-btns{
      flex:0 0 auto;
      display:flex;
      align-items:center;
      gap:9px;
    }
    .member-link{
      display:flex;
      align-items:center;
      color:var(--theme);
      font-size:14px;
      font-weight:700;
    }
    .member-link a{color:var(--theme)}
    .open-account{
      padding:9px 17px;
      border-radius:999px;
      color:#fff;
      background:var(--theme);
      font-size:14px;
      font-weight:800;
      box-shadow:0 8px 18px rgba(11,61,145,.2);
    }
    .open-account:hover{background:var(--theme-dark)}
    .hamburger{
      width:42px;
      height:42px;
      padding:9px;
      display:none;
      border:1px solid #dbe2ec;
      border-radius:10px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      width:100%;
      height:2px;
      margin:4px 0;
      display:block;
      border-radius:2px;
      background:var(--theme-dark);
      transition:.2s ease;
    }
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

    .drawer-overlay{
      position:fixed;
      inset:0;
      z-index:90;
      visibility:hidden;
      opacity:0;
      background:rgba(4,16,35,.55);
      transition:.25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:100;
      width:min(390px,88vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-18px 0 50px rgba(7,24,53,.22);
      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-dark);
    }
    .drawer-head>span{flex:1}
    .drawer-head a{
      padding:7px 14px;
      border:1px solid rgba(255,255,255,.45);
      border-radius:999px;
      font-weight:700;
    }
    .drawer-close{
      width:36px;
      height:36px;
      padding:0;
      border:0;
      color:#fff;
      background:transparent;
      font-size:30px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:13px 18px 28px}
    .drawer-link,
    .drawer-toggle{
      width:100%;
      min-height:48px;
      padding:12px 4px;
      display:flex;
      align-items:center;
      border:0;
      border-bottom:1px solid #edf0f4;
      background:transparent;
      color:#24344f;
      text-align:left;
      font-weight:750;
      cursor:pointer;
    }
    .drawer-toggle{position:relative}
    .drawer-toggle::after{
      content:"+";
      position:absolute;
      right:5px;
      color:var(--theme);
      font-size:20px;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      padding:0 10px;
      background:#f7f9fc;
      transition:max-height .3s ease;
    }
    .drawer-submenu.open{max-height:720px}
    .drawer-submenu a{
      padding:10px 5px;
      display:block;
      border-bottom:1px dashed #dfe5ee;
      color:#59677d;
      font-size:14px;
    }
    .drawer-submenu a:hover{color:var(--theme)}

    .target-page-main.download-page-main{overflow:hidden}
    .download-page-main .download-hero{
      position:relative;
      padding:76px 0 70px;
      color:#fff;
      background:
        radial-gradient(circle at 14% 18%,rgba(255,196,86,.2),transparent 25%),
        radial-gradient(circle at 86% 76%,rgba(104,157,255,.24),transparent 28%),
        linear-gradient(135deg,var(--theme-dark),var(--theme) 62%,#1f5bb8);
    }
    .download-page-main .download-hero::before{
      content:"";
      position:absolute;
      inset:0;
      opacity:.2;
      background-image:
        linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
      background-size:38px 38px;
    }
    .download-page-main .download-hero-inner{
      position:relative;
      z-index:1;
      max-width:900px;
      margin:auto;
      text-align:center;
    }
    .download-page-main .eyebrow{
      margin-bottom:14px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#ffe1a8;
      font-size:14px;
      font-weight:800;
      letter-spacing:.12em;
    }
    .download-page-main .eyebrow::before,
    .download-page-main .eyebrow::after{
      content:"";
      width:30px;
      height:1px;
      background:currentColor;
    }
    .download-page-main h1{
      margin:0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.18;
      letter-spacing:-.03em;
    }
    .download-page-main .hero-desc{
      max-width:720px;
      margin:19px auto 0;
      color:#dce8ff;
      font-size:17px;
    }
    .download-page-main .hero-actions{
      margin-top:30px;
      display:flex;
      flex-wrap:wrap;
      justify-content:center;
      gap:12px;
    }
    .download-page-main .primary-btn,
    .download-page-main .secondary-btn{
      min-width:158px;
      padding:13px 22px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:999px;
      font-weight:800;
      transition:.2s ease;
    }
    .download-page-main .primary-btn{
      color:var(--coffee);
      background:#f5bd56;
      box-shadow:0 12px 24px rgba(21,24,32,.2);
    }
    .download-page-main .secondary-btn{
      border:1px solid rgba(255,255,255,.5);
      color:#fff;
      background:rgba(255,255,255,.08);
    }
    .download-page-main .primary-btn:hover,
    .download-page-main .secondary-btn:hover{transform:translateY(-2px)}
    .download-page-main .trust-row{
      position:relative;
      z-index:2;
      width:min(980px,calc(100% - 40px));
      margin:-28px auto 0;
      padding:18px 24px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
      border:1px solid rgba(11,61,145,.1);
      border-radius:16px;
      background:#fff;
      box-shadow:var(--shadow);
    }
    .download-page-main .trust-item{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      color:#526079;
      text-align:center;
      font-size:14px;
    }
    .download-page-main .trust-icon{
      width:34px;
      height:34px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      border-radius:10px;
      color:var(--theme);
      background:var(--theme-soft);
      font-weight:900;
    }
    .download-page-main .section{padding:82px 0}
    .download-page-main .section-soft{background:#eef3fa}
    .download-page-main .section-head{
      max-width:760px;
      margin:0 auto 38px;
      text-align:center;
    }
    .download-page-main .section-label{
      margin-bottom:8px;
      display:block;
      color:var(--theme);
      font-size:13px;
      font-weight:900;
      letter-spacing:.14em;
    }
    .download-page-main .section-head h2{
      margin:0;
      color:#152745;
      font-size:clamp(28px,4vw,40px);
      line-height:1.25;
    }
    .download-page-main .section-head p{margin:14px 0 0;color:var(--muted)}
    .download-page-main .download-panel{
      display:grid;
      grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);
      gap:24px;
    }
    .download-page-main .platform-card{
      padding:30px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:#fff;
      box-shadow:0 14px 38px rgba(20,41,77,.08);
    }
    .download-page-main .platform-main{
      position:relative;
      overflow:hidden;
      color:#fff;
      background:linear-gradient(145deg,#102d61,var(--theme));
    }
    .download-page-main .platform-main::after{
      content:"↓";
      position:absolute;
      right:24px;
      bottom:-32px;
      color:rgba(255,255,255,.09);
      font-size:150px;
      font-weight:900;
      line-height:1;
    }
    .download-page-main .platform-icon{
      width:58px;
      height:58px;
      display:grid;
      place-items:center;
      border-radius:17px;
      color:var(--theme-dark);
      background:#f5bd56;
      font-size:25px;
      font-weight:900;
    }
    .download-page-main .platform-card h3{
      position:relative;
      z-index:1;
      margin:20px 0 9px;
      font-size:24px;
    }
    .download-page-main .platform-card p{
      position:relative;
      z-index:1;
      margin:0;
      color:inherit;
      opacity:.82;
    }
    .download-page-main .feature-list{
      position:relative;
      z-index:1;
      margin:22px 0 0;
      padding:0;
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:10px;
      list-style:none;
    }
    .download-page-main .feature-list li{
      padding:10px 12px;
      border-radius:10px;
      background:rgba(255,255,255,.1);
      font-size:14px;
    }
    .download-page-main .feature-list li::before{
      content:"✓";
      margin-right:7px;
      color:#ffd27e;
      font-weight:900;
    }
    .download-page-main .download-entry{
      position:relative;
      z-index:1;
      margin-top:26px;
      padding:13px 22px;
      display:inline-flex;
      align-items:center;
      gap:9px;
      border-radius:999px;
      color:var(--coffee);
      background:#f5bd56;
      font-weight:900;
    }
    .download-page-main .side-options{
      display:grid;
      gap:16px;
    }
    .download-page-main .option-card{
      padding:22px;
      display:grid;
      grid-template-columns:50px minmax(0,1fr);
      gap:4px 15px;
      align-items:center;
      border:1px solid var(--line);
      border-radius:16px;
      background:#fff;
    }
    .download-page-main .option-card .option-icon{
      grid-row:1/3;
      width:50px;
      height:50px;
      display:grid;
      place-items:center;
      border-radius:14px;
      color:var(--theme);
      background:var(--theme-soft);
      font-weight:900;
    }
    .download-page-main .option-card strong{color:#1b3155;font-size:17px}
    .download-page-main .option-card span{color:var(--muted);font-size:13px}
    .download-page-main .option-card:hover{
      border-color:#b8c9e9;
      box-shadow:0 10px 25px rgba(16,48,95,.08);
    }
    .download-page-main .steps{
      position:relative;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:22px;
    }
    .download-page-main .steps::before{
      content:"";
      position:absolute;
      top:38px;
      right:16%;
      left:16%;
      height:2px;
      background:#c8d5e9;
    }
    .download-page-main .step-card{
      position:relative;
      z-index:1;
      padding:0 22px 26px;
      text-align:center;
    }
    .download-page-main .step-number{
      width:76px;
      height:76px;
      margin:0 auto 18px;
      display:grid;
      place-items:center;
      border:8px solid #eef3fa;
      border-radius:50%;
      color:#fff;
      background:var(--theme);
      box-shadow:0 0 0 1px #cbd7ea;
      font-size:21px;
      font-weight:900;
    }
    .download-page-main .step-card h3{margin:0 0 8px;color:#17305a}
    .download-page-main .step-card p{margin:0;color:var(--muted);font-size:14px}
    .download-page-main .notice{
      margin-top:34px;
      padding:18px 22px;
      display:flex;
      align-items:flex-start;
      gap:12px;
      border:1px solid #ead9b4;
      border-radius:14px;
      color:#604928;
      background:#fff9ec;
    }
    .download-page-main .notice strong{flex:0 0 auto}
    .download-page-main .faq-list{
      max-width:900px;
      margin:0 auto;
      display:grid;
      gap:13px;
    }
    .download-page-main .faq-item{
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:14px;
      background:#fff;
    }
    .download-page-main .faq-item summary{
      padding:19px 22px;
      color:#1d3152;
      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{
      content:"+";
      float:right;
      color:var(--theme);
      font-size:22px;
      line-height:1;
    }
    .download-page-main .faq-item[open] summary::after{content:"−"}
    .download-page-main .faq-item p{
      margin:0;
      padding:0 22px 20px;
      color:var(--muted);
    }
    .download-page-main .final-cta{
      padding:68px 0;
      color:#fff;
      background:linear-gradient(115deg,var(--coffee),#644127);
    }
    .download-page-main .final-cta-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:30px;
    }
    .download-page-main .final-cta h2{margin:0;font-size:32px}
    .download-page-main .final-cta p{margin:8px 0 0;color:#eadbca}
    .download-page-main .cta-button{
      flex:0 0 auto;
      padding:14px 24px;
      border-radius:999px;
      color:var(--coffee);
      background:#f5bd56;
      font-weight:900;
    }

    .footer{
      padding:58px 0 0;
      color:#bcc8dc;
      background:#071a39;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr 1fr 1fr 1.1fr;
      gap:42px;
    }
    .footer h3{
      margin:0 0 16px;
      color:#fff;
      font-size:16px;
    }
    .footer-brand strong{
      display:block;
      margin-bottom:13px;
      color:#fff;
      font-size:22px;
    }
    .footer p{margin:7px 0;font-size:14px}
    .footer-grid>div>a{
      margin:8px 0;
      display:block;
      color:#bcc8dc;
      font-size:14px;
    }
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{
      margin-top:38px;
      padding:20px 0;
      border-top:1px solid rgba(255,255,255,.1);
      color:#91a1ba;
      text-align:center;
      font-size:13px;
    }

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:70px}
      .header-btns{margin-left:auto}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:760px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{
        padding:7px 0;
        align-items:flex-start;
        flex-direction:column;
        gap:1px;
      }
      .top-contact{font-size:12px}
      .logo{min-width:0;font-size:17px}
      .logo img{width:38px;height:38px}
      .member-link{display:none}
      .open-account{padding:8px 14px}
      .download-page-main .download-hero{padding:58px 0 62px}
      .download-page-main .hero-desc{font-size:15px}
      .download-page-main .trust-row{grid-template-columns:1fr;padding:16px}
      .download-page-main .trust-item{justify-content:flex-start}
      .download-page-main .section{padding:62px 0}
      .download-page-main .download-panel{grid-template-columns:1fr}
      .download-page-main .platform-card{padding:23px}
      .download-page-main .feature-list{grid-template-columns:1fr}
      .download-page-main .steps{grid-template-columns:1fr}
      .download-page-main .steps::before{
        top:20px;
        bottom:20px;
        left:37px;
        width:2px;
        height:auto;
      }
      .download-page-main .step-card{
        min-height:82px;
        padding:0 0 25px 96px;
        text-align:left;
      }
      .download-page-main .step-number{
        position:absolute;
        top:0;
        left:0;
        width:74px;
        height:74px;
        margin:0;
      }
      .download-page-main .final-cta-inner{
        align-items:flex-start;
        flex-direction:column;
      }
      .footer-grid{grid-template-columns:1fr;gap:26px}
    }
    @media (max-width:430px){
      .top-contact{display:flex;flex-direction:column}
      .header-inner{gap:8px}
      .logo span{
        max-width:112px;
        overflow:hidden;
        text-overflow:ellipsis;
        white-space:nowrap;
      }
      .open-account{display:none}
      .download-page-main .hero-actions{align-items:stretch;flex-direction:column}
      .download-page-main .primary-btn,
      .download-page-main .secondary-btn{width:100%}
      .download-page-main .option-card{
        grid-template-columns:44px minmax(0,1fr);
        padding:18px;
      }
    }