:root{
      --theme:#0B3D91;
      --ink:#172235;
      --muted:#64748b;
      --line:#dfe6ef;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 55px rgba(21,43,74,.10);
      --radius:18px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{background:#10233f;color:#dce8f7;font-size:13px}
    .topbar .container{height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{margin-left:20px;color:#eaf2ff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;flex:none;font-size:19px;font-weight:800;color:var(--theme)}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;justify-content:center;align-items:stretch;gap:2px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:78px;padding:0 15px;font-size:15px;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);margin:0 0 4px 8px}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);width:300px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:30}
    .mega-menu{width:620px}
    .nav-item:hover .dropdown-panel,.nav-item:hover .mega-menu,.nav-item:focus-within .dropdown-panel,.nav-item:focus-within .mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;height:12px;top:-12px}
    .drop-title,.mega-title{margin:0 0 12px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .drop-link{display:block;padding:8px 0;border-bottom:1px solid #edf1f6;font-size:14px}
    .drop-link:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;padding:10px;border:1px solid #edf1f6;border-radius:10px}
    .mega-card:hover{border-color:#b8cbe7;background:#f8fbff}
    .mega-card img{width:32px;height:32px;object-fit:contain;flex:none}
    .mega-card span{min-width:0}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:13px}
    .mega-card small{font-size:11px;color:var(--muted);line-height:1.5}
    .mega-footer{display:block;margin-top:15px;padding-top:12px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;flex:none}
    .member-btn,.open-btn{padding:9px 14px;border-radius:8px;font-size:13px}
    .member-btn{color:var(--theme);border:1px solid #bfd0e8}
    .open-btn{color:#fff;background:var(--theme)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:9px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--ink);margin:5px 0;transition:.2s}
    .hamburger.active span:first-child{transform:translateY(7px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:last-child{transform:translateY(-7px) rotate(-45deg)}
    .drawer-overlay{position:fixed;inset:0;background:rgba(8,20,38,.5);opacity:0;visibility:hidden;transition:.25s;z-index:50}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(380px,88vw);background:#fff;transform:translateX(100%);transition:.3s;z-index:51;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;padding:0 20px;display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:700}
    .drawer-head>a{margin-left:auto;background:var(--theme);color:#fff;padding:5px 12px;border-radius:6px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 20px 35px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;font:inherit;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{max-height:0;overflow:hidden;transition:.25s;padding-left:14px}
    .drawer-submenu.open{max-height:700px}
    .drawer-submenu a{display:block;padding:9px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:80px;background:#101d31;color:#d6e0ed;padding:58px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
    .footer h3,.footer h4{margin:0 0 15px;color:#fff}
    .footer h3{font-size:20px}
    .footer h4{font-size:14px}
    .footer p{margin:7px 0;color:#aebdd0;font-size:13px}
    .footer-grid>div>a{display:block;margin:7px 0;color:#aebdd0;font-size:13px}
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);color:#91a2b8;font-size:12px}
    .about-page{background:linear-gradient(180deg,#f7faff 0,#fff 440px)}
    .about-hero{padding:86px 0 70px;text-align:center;background:
      radial-gradient(circle at 15% 30%,rgba(11,61,145,.09),transparent 28%),
      radial-gradient(circle at 85% 10%,rgba(66,137,210,.11),transparent 25%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--theme)}
    .about-hero h1{max-width:820px;margin:18px auto 18px;font-size:clamp(34px,5vw,62px);line-height:1.15;letter-spacing:-.04em}
    .about-hero p{max-width:650px;margin:0 auto;color:var(--muted);font-size:17px}
    .about-section{padding:74px 0}
    .section-heading{text-align:center;max-width:700px;margin:0 auto 38px}
    .section-heading h2{margin:0 0 10px;font-size:32px}
    .section-heading p{margin:0;color:var(--muted)}
    .values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .value-card{padding:30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 12px 32px rgba(24,51,88,.06)}
    .value-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:#eaf1fb;color:var(--theme);font-size:21px;font-weight:800}
    .value-card h3{margin:20px 0 8px;font-size:19px}
    .value-card p{margin:0;color:var(--muted);font-size:14px}
    .story{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}
    .story-copy h2{margin:0 0 17px;font-size:34px;line-height:1.25}
    .story-copy p{color:var(--muted);font-size:15px}
    .story-panel{padding:30px;border-radius:24px;background:linear-gradient(145deg,#0b3d91,#15345d);color:#fff;box-shadow:var(--shadow)}
    .story-panel strong{display:block;font-size:52px;line-height:1}
    .story-panel span{display:block;margin-top:10px;color:#cbdcf5}
    .story-points{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;margin-top:30px}
    .story-point{padding:16px;border:1px solid rgba(255,255,255,.16);border-radius:12px;background:rgba(255,255,255,.06)}
    .story-point b{display:block;font-size:22px}
    .story-point small{color:#bfd2ed}
    .trust{background:#f4f7fb}
    .trust-list{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
    .trust-list span{padding:11px 19px;border:1px solid #d9e3f0;border-radius:999px;background:#fff;color:#52657e;font-size:14px}
    .about-cta{padding:65px 30px;text-align:center;border-radius:24px;background:#edf4ff}
    .about-cta h2{margin:0 0 10px;font-size:30px}
    .about-cta p{margin:0 auto 24px;color:var(--muted)}
    .cta-btn{display:inline-block;padding:12px 24px;border-radius:9px;background:var(--theme);color:#fff;font-size:14px;font-weight:700}
    @media(max-width:1000px){
      .main-nav{display:none}
      .hamburger{display:block}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .story{grid-template-columns:1fr}
    }
    @media(max-width:650px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{height:auto;min-height:38px;padding:7px 0;align-items:flex-start;gap:6px;flex-direction:column}
      .topbar a{margin-left:0;margin-right:14px}
      .header-inner{height:68px;gap:10px}
      .logo{font-size:16px}
      .member-btn,.open-btn{display:none}
      .about-hero{padding:62px 0 54px}
      .about-hero p{font-size:15px}
      .about-section{padding:54px 0}
      .values-grid{grid-template-columns:1fr}
      .section-heading h2,.story-copy h2{font-size:27px}
      .story-panel strong{font-size:42px}
      .footer{margin-top:55px;padding-top:42px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px 18px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
    }