:root{
      --theme:#0B3D91;
      --theme-dark:#082c68;
      --ink:#172033;
      --muted:#687386;
      --line:#e5eaf1;
      --paper:#f7f9fc;
      --white:#fff;
      --gold:#c18b3c;
      --shadow:0 18px 50px rgba(14,35,72,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{background:#0e1a2e;color:#cfd8e7;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;font-size:18px;font-weight:800;color:var(--theme)}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 13px;font-size:14px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;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%;transform:translateX(-50%) translateY(8px);width:310px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s ease;z-index:30}
    .mega-menu{width:720px}
    .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;transform:translateX(-50%) translateY(0)}
    .nav-item:hover:after,.nav-item:focus-within:after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
    .drop-title,.mega-title{display:block;color:var(--theme);font-size:16px;margin-bottom:12px}
    .drop-list{display:grid;gap:8px}
    .drop-list a{display:block;padding:6px 0;color:#4f5b6d;font-size:14px}
    .drop-list a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{display:block;padding:11px;border:1px solid var(--line);border-radius:12px;background:#fbfcfe;transition:.2s}
    .mega-card:hover{border-color:#a8bfeb;transform:translateY(-2px)}
    .mega-card img{width:42px;height:42px;object-fit:contain;border-radius:8px;margin-bottom:7px}
    .mega-card strong{display:block;font-size:13px;margin-bottom:3px}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.6}
    .mega-footer{display:block;margin-top:16px;padding-top:12px;border-top:1px solid var(--line);color:var(--theme);font-weight:700;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-link{font-size:13px;color:var(--theme);font-weight:700}
    .open-account{background:var(--theme);color:#fff;padding:9px 16px;border-radius:8px;font-size:13px;font-weight:700}
    .open-account:hover{background:var(--theme-dark)}
    .hamburger{display:none;width:42px;height:38px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--theme);margin:5px 0;transition:.2s}
    .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;inset:0;background:rgba(8,20,42,.52);opacity:0;visibility:hidden;transition:.25s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.28s ease;z-index:41;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head span{flex:1;color:var(--theme)}
    .drawer-head a{background:var(--theme);color:#fff;border-radius:6px;padding:6px 12px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;line-height:1;color:#687386;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border-bottom:1px solid var(--line);background:none;border-top:0;border-left:0;border-right:0;text-align:left;color:var(--ink);font-weight:600;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:4px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .about-page{padding-bottom:80px}
    .about-hero{padding:82px 0 72px;background:linear-gradient(135deg,#eef4ff 0%,#fff 52%,#f8f1e6 100%);text-align:center;border-bottom:1px solid #e6edf8}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before,.eyebrow:after{content:"";width:30px;height:1px;background:var(--gold)}
    .about-hero h1{margin:18px auto 14px;max-width:800px;font-size:clamp(32px,5vw,58px);line-height:1.18;letter-spacing:-.04em;color:#14294d}
    .about-hero p{max-width:680px;margin:0 auto;color:var(--muted);font-size:17px}
    .about-wrap{padding-top:62px}
    .intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
    .section-label{color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.1em}
    .intro-copy h2{font-size:34px;line-height:1.3;margin:12px 0 18px;color:#172c52}
    .intro-copy p{color:var(--muted);margin:0 0 14px}
    .value-panel{position:relative;padding:30px;border-radius:22px;background:#132e59;color:#fff;box-shadow:0 20px 40px rgba(11,61,145,.22);overflow:hidden}
    .value-panel:after{content:"";position:absolute;width:220px;height:220px;right:-80px;top:-90px;border:34px solid rgba(255,255,255,.08);border-radius:50%}
    .value-panel h3{position:relative;margin:0 0 22px;font-size:22px}
    .value-list{position:relative;display:grid;gap:15px}
    .value-list div{display:flex;gap:13px;align-items:flex-start}
    .value-list b{display:grid;place-items:center;width:28px;height:28px;background:#d8a65a;color:#14294d;border-radius:50%;font-size:13px;flex:none}
    .value-list span{font-size:14px;color:#e2ebfa}
    .about-section{padding-top:78px}
    .section-heading{text-align:center;max-width:680px;margin:0 auto 30px}
    .section-heading h2{margin:8px 0 10px;font-size:32px;color:#172c52}
    .section-heading p{margin:0;color:var(--muted)}
    .trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .trust-card{padding:26px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 24px rgba(14,35,72,.04)}
    .trust-icon{width:44px;height:44px;display:grid;place-items:center;background:#edf3ff;color:var(--theme);border-radius:12px;font-size:21px;margin-bottom:16px}
    .trust-card h3{margin:0 0 8px;font-size:18px;color:#1c3155}
    .trust-card p{margin:0;color:var(--muted);font-size:14px}
    .timeline{position:relative;max-width:820px;margin:40px auto 0}
    .timeline:before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;background:#d8e2f4;transform:translateX(-50%)}
    .timeline-item{position:relative;width:50%;padding:0 42px 30px}
    .timeline-item:nth-child(even){margin-left:50%}
    .timeline-item:before{content:"";position:absolute;top:7px;right:-7px;width:12px;height:12px;background:var(--gold);border:4px solid #fff;box-shadow:0 0 0 1px #d8e2f4;border-radius:50%}
    .timeline-item:nth-child(even):before{left:-7px;right:auto}
    .timeline-item h3{margin:0 0 5px;color:var(--theme);font-size:17px}
    .timeline-item p{margin:0;color:var(--muted);font-size:14px}
    .contact-cta{margin-top:76px;padding:42px;border-radius:22px;background:linear-gradient(110deg,#0b3d91,#1e65bd);display:flex;justify-content:space-between;align-items:center;gap:20px;color:#fff}
    .contact-cta h2{margin:0 0 6px;font-size:27px}
    .contact-cta p{margin:0;color:#dce9ff}
    .cta-button{display:inline-block;background:#e2ad5d;color:#152642;padding:12px 23px;border-radius:8px;font-weight:800;white-space:nowrap}
    .footer{background:#0e1a2e;color:#b9c6d9;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:15px}
    .footer-brand strong{display:block;color:#fff;font-size:20px;margin-bottom:12px}
    .footer p{margin:6px 0;font-size:13px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;font-size:13px;color:#b9c6d9}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:17px;font-size:12px;color:#8998ae}
    @media(max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .intro-grid{grid-template-columns:1fr;gap:30px}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{display:block;padding:8px 0;font-size:12px}
      .top-contact{display:block;margin-top:2px}
      .header-inner{height:68px;gap:8px}
      .logo{min-width:0;font-size:15px}
      .logo img{width:30px;height:30px}
      .member-link{display:none}
      .open-account{padding:8px 11px;font-size:12px}
      .about-hero{padding:58px 0 52px}
      .about-hero p{font-size:15px}
      .about-wrap{padding-top:42px}
      .intro-copy h2{font-size:28px}
      .about-section{padding-top:54px}
      .section-heading h2{font-size:27px}
      .trust-grid{grid-template-columns:1fr}
      .timeline:before{left:8px;transform:none}
      .timeline-item,.timeline-item:nth-child(even){width:100%;margin-left:0;padding:0 0 28px 34px}
      .timeline-item:before,.timeline-item:nth-child(even):before{left:2px;right:auto}
      .contact-cta{display:block;padding:28px 24px}
      .contact-cta h2{font-size:23px}
      .cta-button{margin-top:20px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .mega-menu,.dropdown-panel{display:none}
    }