:root{
      --theme:#0B3D91;
      --theme-dark:#082b68;
      --ink:#16233b;
      --muted:#66748b;
      --line:#dfe6ef;
      --soft:#f3f6fa;
      --white:#fff;
      --shadow:0 14px 40px rgba(22,49,91,.10);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#fff;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","微软雅黑",Arial,sans-serif;
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;vertical-align:middle}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      color:#dbe8ff;
      background:#071a3b;
      font-size:13px;
    }
    .topbar .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-links{display:flex;gap:20px}
    .topbar a{color:#dbe8ff}
    .topbar a:hover{color:#fff}

    .header{
      position:relative;
      z-index:20;
      background:#fff;
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--theme-dark);
      font-size:20px;
      font-weight:800;
      white-space:nowrap;
    }
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{
      display:flex;
      align-items:stretch;
      gap:4px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .nav-item{position:relative}
    .nav-link{
      display:flex;
      align-items:center;
      min-height:78px;
      padding:0 13px;
      color:#26344b;
      font-size:14px;
      white-space:nowrap;
    }
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{
      content:"";
      width:6px;
      height:6px;
      margin-left:8px;
      border-right:1px solid currentColor;
      border-bottom:1px solid currentColor;
      transform:rotate(45deg) translateY(-2px);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:calc(100% - 1px);
      left:50%;
      display:none;
      min-width:235px;
      padding:18px;
      transform:translateX(-50%);
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 14px 14px;
      box-shadow:var(--shadow);
    }
    .dropdown-panel:before,.mega-menu:before{
      content:"";
      position:absolute;
      top:-12px;
      left:0;
      right:0;
      height:12px;
    }
    .dropdown-panel a{
      display:block;
      padding:8px 4px;
      border-bottom:1px solid #eef2f7;
      font-size:13px;
    }
    .dropdown-panel a:last-child{color:var(--theme);border-bottom:0}
    .mega-menu{
      width:540px;
      padding:22px;
    }
    .nav-item:hover>.dropdown-panel,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{display:block}
    .mega-title{
      margin:0 0 12px;
      color:var(--theme-dark);
      font-size:14px;
      font-weight:800;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:9px;
    }
    .mega-card{
      display:block;
      padding:11px 12px;
      border:1px solid var(--line);
      border-radius:10px;
      background:#f9fbfd;
      font-size:12px;
      line-height:1.5;
    }
    .mega-card:hover{border-color:#9bb8e7;background:#f0f6ff}
    .mega-card strong{font-size:13px;color:var(--ink)}
    .mega-card span{color:var(--muted)}
    .mega-card img{width:25px;height:25px;object-fit:contain;margin-right:6px}
    .mega-footer{
      display:block;
      margin-top:15px;
      padding-top:13px;
      border-top:1px solid var(--line);
      color:var(--theme);
      font-size:13px;
      font-weight:700;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
      white-space:nowrap;
    }
    .member-btn,.account-btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:0 14px;
      border-radius:8px;
      font-size:13px;
      font-weight:700;
    }
    .member-btn{color:var(--theme);border:1px solid #b9ccec}
    .account-btn{color:#fff;background:var(--theme)}
    .member-btn:hover{background:#f1f6ff}
    .account-btn:hover{background:var(--theme-dark)}
    .hamburger{
      display:none;
      width:42px;
      height:40px;
      padding:9px;
      border:1px solid var(--line);
      border-radius:8px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      display:block;
      width:22px;
      height:2px;
      margin:4px auto;
      background:var(--theme-dark);
      transition:.2s;
    }
    .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;
      z-index:40;
      inset:0;
      display:none;
      background:rgba(2,13,31,.5);
    }
    .drawer-overlay.open{display:block}
    .mobile-drawer{
      position:fixed;
      z-index:50;
      top:0;
      right:0;
      bottom:0;
      width:min(380px,88vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-15px 0 45px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:transform .25s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      display:flex;
      align-items:center;
      gap:12px;
      min-height:72px;
      padding:0 20px;
      color:var(--theme-dark);
      font-weight:800;
      border-bottom:1px solid var(--line);
    }
    .drawer-head>a{
      margin-left:auto;
      padding:6px 12px;
      border-radius:7px;
      color:#fff;
      background:var(--theme);
      font-size:13px;
    }
    .drawer-close{
      width:34px;
      height:34px;
      border:0;
      border-radius:50%;
      color:var(--theme-dark);
      background:#edf3fb;
      font-size:24px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:12px 20px 35px}
    .drawer-link,.drawer-toggle{
      display:block;
      width:100%;
      padding:13px 2px;
      color:var(--ink);
      text-align:left;
      border:0;
      border-bottom:1px solid #edf1f5;
      background:transparent;
      cursor:pointer;
      font-weight:700;
    }
    .drawer-toggle:after{
      content:"+";
      float:right;
      color:var(--theme);
      font-size:18px;
    }
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:6px 0 8px 15px;
      border-bottom:1px solid #edf1f5;
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:7px 0;
      color:var(--muted);
      font-size:13px;
    }

    .about-page{background:#fff}
    .about-hero{
      padding:78px 0 72px;
      background:
        radial-gradient(circle at 85% 18%,rgba(61,123,211,.18),transparent 28%),
        linear-gradient(135deg,#f6f9fd 0%,#fff 60%);
      border-bottom:1px solid var(--line);
    }
    .about-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:18px;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .about-kicker:before{
      content:"";
      width:28px;
      height:2px;
      background:var(--theme);
    }
    .about-hero h1{
      max-width:780px;
      margin:0 0 18px;
      color:var(--theme-dark);
      font-size:clamp(34px,5vw,64px);
      line-height:1.18;
      letter-spacing:-.04em;
    }
    .about-hero p{
      max-width:720px;
      margin:0;
      color:var(--muted);
      font-size:17px;
    }
    .about-hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:30px;
    }
    .about-hero-meta span{
      padding:8px 14px;
      color:var(--theme-dark);
      border:1px solid #c7d7ee;
      border-radius:30px;
      background:#fff;
      font-size:13px;
    }
    .about-section{padding:76px 0}
    .section-heading{max-width:700px;margin-bottom:32px}
    .section-heading h2{
      margin:0 0 10px;
      color:var(--theme-dark);
      font-size:clamp(27px,4vw,42px);
      line-height:1.25;
    }
    .section-heading p{margin:0;color:var(--muted)}
    .about-intro{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:42px;
      align-items:start;
    }
    .about-intro-text p{margin:0 0 17px;color:#4d5c72}
    .fact-panel{
      padding:28px;
      border:1px solid #cbd9ec;
      border-radius:var(--radius);
      background:#f6f9fe;
    }
    .fact-panel h3{margin:0 0 18px;color:var(--theme-dark);font-size:20px}
    .fact-list{margin:0;padding:0;list-style:none}
    .fact-list li{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding:13px 0;
      border-bottom:1px solid #dce6f3;
      font-size:14px;
    }
    .fact-list li:last-child{border-bottom:0}
    .fact-list span:first-child{color:var(--muted)}
    .fact-list span:last-child{color:var(--theme-dark);font-weight:700;text-align:right}
    .values-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .value-card{
      min-height:205px;
      padding:26px;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:#fff;
      box-shadow:0 8px 25px rgba(30,60,100,.05);
    }
    .value-number{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:38px;
      height:38px;
      margin-bottom:22px;
      border-radius:10px;
      color:#fff;
      background:var(--theme);
      font-size:13px;
      font-weight:800;
    }
    .value-card h3{margin:0 0 9px;color:var(--theme-dark);font-size:19px}
    .value-card p{margin:0;color:var(--muted);font-size:14px}
    .timeline-section{background:var(--soft)}
    .timeline{
      position:relative;
      max-width:900px;
      margin:35px auto 0;
    }
    .timeline:before{
      content:"";
      position:absolute;
      top:0;
      bottom:0;
      left:18px;
      width:2px;
      background:#b7cae6;
    }
    .timeline-item{
      position:relative;
      display:grid;
      grid-template-columns:70px 1fr;
      gap:20px;
      padding-bottom:28px;
    }
    .timeline-dot{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:center;
      width:38px;
      height:38px;
      border:6px solid var(--soft);
      border-radius:50%;
      color:#fff;
      background:var(--theme);
      font-size:11px;
      font-weight:800;
    }
    .timeline-card{
      padding:21px 24px;
      border:1px solid var(--line);
      border-radius:14px;
      background:#fff;
    }
    .timeline-card h3{margin:0 0 6px;color:var(--theme-dark);font-size:18px}
    .timeline-card p{margin:0;color:var(--muted);font-size:14px}
    .trust-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:1px;
      overflow:hidden;
      margin-top:35px;
      border:1px solid #cbd9ec;
      border-radius:var(--radius);
      background:#cbd9ec;
    }
    .trust-item{
      padding:25px 20px;
      background:#fff;
      text-align:center;
    }
    .trust-item strong{display:block;color:var(--theme-dark);font-size:25px}
    .trust-item span{color:var(--muted);font-size:13px}
    .about-cta{
      padding:34px;
      border-radius:var(--radius);
      color:#fff;
      background:linear-gradient(120deg,var(--theme-dark),var(--theme));
    }
    .about-cta h2{margin:0 0 8px;font-size:28px}
    .about-cta p{margin:0 0 22px;color:#dbe8ff}
    .cta-link{
      display:inline-flex;
      padding:11px 18px;
      border-radius:8px;
      color:var(--theme-dark);
      background:#fff;
      font-size:14px;
      font-weight:800;
    }

    .footer{
      padding:55px 0 20px;
      color:#c1d0e6;
      background:#071a3b;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr 1fr 1fr 1.2fr;
      gap:35px;
    }
    .footer h3,.footer h4{margin:0 0 14px;color:#fff}
    .footer h3{font-size:20px}
    .footer h4{font-size:15px}
    .footer p{margin:7px 0;font-size:13px}
    .footer-grid>div>a{
      display:block;
      margin:7px 0;
      color:#c1d0e6;
      font-size:13px;
    }
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      margin-top:38px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.16);
      color:#94aaca;
      font-size:12px;
    }

    @media (max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .about-intro{grid-template-columns:1fr}
    }
    @media (max-width:760px){
      .container{width:min(100% - 30px,620px)}
      .topbar .container{align-items:flex-start;flex-direction:column;gap:2px;padding:8px 0}
      .topbar-links{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:68px;gap:10px}
      .logo{font-size:17px}
      .logo img{width:32px;height:32px}
      .member-btn{display:none}
      .account-btn{padding:0 11px}
      .about-hero{padding:55px 0 50px}
      .about-hero p{font-size:15px}
      .about-section{padding:52px 0}
      .values-grid{grid-template-columns:1fr}
      .trust-strip{grid-template-columns:repeat(2,1fr)}
      .trust-item{padding:18px 10px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:8px}
    }
    @media (max-width:480px){
      .account-btn{display:none}
      .about-hero h1{font-size:35px}
      .about-hero-meta{gap:8px}
      .about-hero-meta span{font-size:12px}
      .timeline-item{grid-template-columns:50px 1fr;gap:12px}
      .timeline:before{left:18px}
      .timeline-card{padding:16px}
      .footer-grid{grid-template-columns:1fr}
    }