:root{--theme:#0B3D91;--ink:#14213d;--muted:#637089;--line:#dfe6f0;--bg:#f5f8fc;--white:#fff}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","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:auto}
    .topbar{height:36px;background:#10213f;color:#dce6f5;font-size:12px}
    .topbar .container{height:100%;display:flex;justify-content:space-between;align-items:center}
    .topbar-links{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:38px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--theme);font-weight:800;font-size:19px}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{height:100%;flex:1}
    .nav-list{height:100%;display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none}
    .nav-item{height:100%;position:relative;display:flex;align-items:center}
    .nav-link{display:flex;align-items:center;height:100%;padding:0 14px;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:100%;left:50%;transform:translateX(-50%);width:350px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:0 18px 40px #10213f1c;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:680px}
    .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;pointer-events:auto}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .panel-title{margin:0 0 12px;color:var(--theme);font-size:14px}
    .panel-list{display:grid;gap:8px}
    .panel-list a{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid #edf1f6;font-size:13px}
    .panel-list a:hover,.mega-card:hover{color:var(--theme)}
    .panel-list small{display:block;color:var(--muted);font-size:11px}
    .mega-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:25px}
    .mega-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
    .mega-card{display:flex;flex-direction:column;gap:3px;padding:11px;border:1px solid var(--line);border-radius:9px;font-size:12px}
    .mega-card img{width:25px;height:25px;object-fit:contain}
    .mega-card strong{font-size:13px}
    .mega-card small{color:var(--muted);font-size:11px;line-height:1.5}
    .mega-footer{display:inline-block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-btn,.open-btn{font-size:13px;padding:8px 13px;border-radius:7px}
    .member-btn{color:var(--theme)}
    .open-btn{background:var(--theme);color:#fff}
    .hamburger{display:none;width:40px;height:38px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--theme);margin:4px 0;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{display:none;position:fixed;inset:0;background:#06143199;z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:-360px;top:0;bottom:0;width:min(350px,88vw);background:#fff;z-index:50;overflow:auto;transition:right .25s;box-shadow:-15px 0 35px #06143126}
    .mobile-drawer.open{right:0}
    .drawer-head{height:70px;padding:0 20px;display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head span{flex:1}
    .drawer-head a{color:var(--theme);font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 16px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:70px;background:#0e1d37;color:#d8e2f0;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:14px}
    .footer p{margin:7px 0;color:#9fb0c8;font-size:13px}
    .footer a{display:block;margin:7px 0;color:#aebed3;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-brand strong{font-size:20px;color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #30415d;margin-top:35px;padding-top:18px;color:#8fa1ba;font-size:12px}
    .about-page{padding:0 0 10px}
    .about-hero{padding:78px 0 65px;background:linear-gradient(135deg,#eaf2ff,#fff 55%,#f3f7fc);border-bottom:1px solid var(--line)}
    .about-hero .eyebrow{display:inline-flex;align-items:center;gap:9px;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:760px;margin:18px 0 16px;font-size:clamp(35px,5vw,62px);line-height:1.15;letter-spacing:-.04em}
    .about-hero p{max-width:690px;margin:0;color:var(--muted);font-size:17px}
    .about-hero .hero-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .primary-link,.secondary-link{display:inline-block;padding:11px 18px;border-radius:8px;font-size:14px;font-weight:700}
    .primary-link{background:var(--theme);color:#fff}
    .secondary-link{border:1px solid #b9c9df;color:var(--theme);background:#fff}
    .about-section{padding:70px 0 0}
    .section-heading{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:25px}
    .section-heading h2{margin:0;font-size:30px;line-height:1.25}
    .section-heading p{max-width:520px;margin:0;color:var(--muted);font-size:14px}
    .values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .value-card{padding:26px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 22px #163c7210}
    .value-card .num{color:var(--theme);font-size:12px;font-weight:800;letter-spacing:.1em}
    .value-card h3{margin:15px 0 8px;font-size:19px}
    .value-card p{margin:0;color:var(--muted);font-size:14px}
    .story-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:35px;align-items:start}
    .story-lead{padding:28px;background:var(--theme);color:#fff;border-radius:16px}
    .story-lead h3{margin:0 0 12px;font-size:24px}
    .story-lead p{margin:0;color:#dbe8fb;font-size:14px}
    .timeline{position:relative;padding-left:28px}
    .timeline:before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:#b9cbe4}
    .timeline-item{position:relative;padding:0 0 24px}
    .timeline-item:before{content:"";position:absolute;left:-28px;top:8px;width:12px;height:12px;border-radius:50%;background:#fff;border:3px solid var(--theme)}
    .timeline-item strong{display:block;color:var(--theme);font-size:13px}
    .timeline-item h3{margin:3px 0 4px;font-size:18px}
    .timeline-item p{margin:0;color:var(--muted);font-size:14px}
    .trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .trust-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:12px}
    .trust-card strong{display:block;font-size:16px;margin-bottom:5px}
    .trust-card span{color:var(--muted);font-size:13px}
    .about-cta{margin-top:70px;padding:38px;background:#e8f0fc;border-radius:16px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .about-cta h2{margin:0 0 7px;font-size:25px}
    .about-cta p{margin:0;color:var(--muted);font-size:14px}
    @media(max-width:980px){
      .main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between;gap:15px}.logo{min-width:auto}
      .mega-menu{width:calc(100vw - 40px)}
      .values-grid{grid-template-columns:1fr 1fr}.trust-grid{grid-template-columns:1fr 1fr}.story-grid{grid-template-columns:1fr}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}.topbar{height:auto;padding:7px 0}.topbar .container{align-items:flex-start;gap:5px}.topbar-links{gap:8px;flex-direction:column;text-align:right}
      .header-inner{height:66px}.member-btn{display:none}.open-btn{padding:7px 10px}
      .about-hero{padding:52px 0 45px}.about-hero h1{font-size:38px}.about-hero p{font-size:15px}
      .about-section{padding-top:48px}.section-heading{display:block}.section-heading p{margin-top:10px}
      .values-grid,.trust-grid{grid-template-columns:1fr}.about-cta{display:block;padding:28px}.about-cta .primary-link{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}
    }