:root{
      --theme:#0B3D91;
      --ink:#14233b;
      --muted:#64748b;
      --line:#dbe4ef;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 50px rgba(15,36,70,.1);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}
    body.drawer-locked{overflow:hidden}
    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:#081d43;color:#dbe8ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid #e8eef6}
    .header-inner{height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-size:19px;font-weight:800;color:var(--ink)}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{list-style:none;margin:0;padding:0;display:flex;align-items:stretch;justify-content:center;gap:3px}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:78px;padding:0 14px;font-size:15px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;margin:0 0 3px 8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);padding-top:9px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
    .dropdown-panel{width:320px}
    .mega-menu{width:min(850px,calc(100vw - 32px))}
    .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;pointer-events:auto}
    .dropdown-shell,.mega-shell{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:22px}
    .dropdown-title,.mega-title{margin:0 0 13px;color:var(--theme);font-size:14px;font-weight:800}
    .dropdown-list{display:grid;gap:10px}
    .dropdown-list a{padding-bottom:9px;border-bottom:1px solid #edf1f6;font-size:14px}
    .dropdown-list a:hover,.mega-category-links a:hover{color:var(--theme)}
    .mega-layout{display:grid;grid-template-columns:180px 1fr;gap:24px}
    .mega-category-links{display:grid;gap:9px;font-size:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .mega-card{display:flex;align-items:flex-start;gap:10px;padding:10px;border:1px solid #e6edf5;border-radius:10px;min-width:0}
    .mega-card:hover{border-color:#9bb6df;background:#f8fbff}
    .mega-card img{width:34px;height:34px;border-radius:8px;object-fit:cover;flex:0 0 auto}
    .mega-card strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card span{font-size:11px;color:var(--muted)}
    .mega-stats{display:grid!important;grid-template-columns:1fr 1fr;gap:0 8px}
    .mega-summary{display:block!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-footer{display:block;margin-top:18px;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:14px;white-space:nowrap;font-size:14px}
    .header-btns>a{color:var(--theme);font-weight:700}
    .hamburger{display:none;border:0;background:transparent;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px 0;background:var(--ink);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(3,16,36,.56);opacity:0;visibility:hidden;z-index:80;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:90;transform:translateX(105%);transition:.3s ease;overflow:auto;box-shadow:-18px 0 45px rgba(0,0,0,.18)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:72px;display:flex;align-items:center;gap:15px;padding:0 20px;border-bottom:1px solid var(--line)}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-weight:700}
    .drawer-close{border:0;background:transparent;font-size:29px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf1f6;background:#fff;text-align:left;font-weight:700;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px;font-weight:400}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{max-height:0;overflow:hidden;transition:.25s ease;padding-left:15px}
    .drawer-submenu.open{max-height:500px;padding-top:5px;padding-bottom:7px}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}
    .footer{background:#091a35;color:#d8e3f3;margin-top:80px}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px;padding:55px 0 42px}
    .footer .logo{color:#fff}
    .footer .logo img{background:#fff;border-radius:7px}
    .footer-brand p{max-width:330px;color:#9fb1ca;font-size:14px}
    .footer h3{margin:0 0 16px;color:#fff;font-size:15px}
    .footer-links,.footer-contact{display:grid;gap:9px;color:#aebdd0;font-size:14px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);color:#91a4be;font-size:12px}
    .about-page{overflow:hidden}
    .about-hero{padding:88px 0 70px;background:linear-gradient(135deg,#eef5ff 0%,#fff 58%,#f4f8fd 100%);position:relative}
    .about-hero:after{content:"";position:absolute;right:-120px;top:-180px;width:460px;height:460px;border:1px solid rgba(11,61,145,.14);border-radius:50%;box-shadow:0 0 0 34px rgba(11,61,145,.035),0 0 0 70px rgba(11,61,145,.025)}
    .about-hero-inner{position:relative;z-index:1;max-width:850px}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:28px;height:3px;background:var(--theme);border-radius:3px}
    .about-hero h1{max-width:780px;margin:20px 0 18px;font-size:clamp(36px,5vw,64px);line-height:1.16;letter-spacing:-.04em}
    .about-hero p{max-width:680px;margin:0;color:#52647c;font-size:18px}
    .about-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 21px;border-radius:8px;font-size:14px;font-weight:800;border:1px solid var(--theme)}
    .btn-primary{background:var(--theme);color:#fff}
    .btn-primary:hover{background:#082f72}
    .btn-outline{color:var(--theme);background:#fff}
    .btn-outline:hover{background:#edf4ff}
    .about-section{padding:78px 0 0}
    .section-heading{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:28px}
    .section-heading h2{margin:0;font-size:32px;letter-spacing:-.03em}
    .section-heading p{max-width:530px;margin:0;color:var(--muted);font-size:15px}
    .mission-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:18px}
    .mission-card{min-height:205px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 8px 28px rgba(15,36,70,.045)}
    .mission-card.featured{background:var(--theme);color:#fff;border-color:var(--theme)}
    .mission-card .number{font-size:13px;font-weight:800;opacity:.7}
    .mission-card h3{margin:28px 0 8px;font-size:20px}
    .mission-card p{margin:0;color:var(--muted);font-size:14px}
    .mission-card.featured p{color:#dbe8ff}
    .value-layout{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}
    .value-copy h2{margin:0 0 17px;font-size:32px}
    .value-copy>p{margin:0;color:var(--muted)}
    .value-list{display:grid;gap:13px;margin-top:26px}
    .value-item{display:flex;gap:15px;padding:17px 0;border-bottom:1px solid var(--line)}
    .value-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;background:#e8f0fc;color:var(--theme);font-weight:900;flex:0 0 auto}
    .value-item h3{margin:0 0 3px;font-size:16px}
    .value-item p{margin:0;color:var(--muted);font-size:13px}
    .process-box{padding:34px;border-radius:20px;background:#f3f7fc;border:1px solid #e0e9f4}
    .process-box h3{margin:0 0 25px;font-size:20px}
    .process-line{display:grid;gap:20px}
    .process-step{display:grid;grid-template-columns:42px 1fr;gap:15px;align-items:start}
    .process-step b{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--theme);color:#fff;font-size:13px}
    .process-step strong{display:block;margin:4px 0 3px}
    .process-step span{display:block;color:var(--muted);font-size:13px}
    .trust-strip{margin-top:78px;padding:28px 0;background:#f8fafc;border-top:1px solid #e8eef6;border-bottom:1px solid #e8eef6}
    .trust-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .trust-inner strong{font-size:17px}
    .trust-tags{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:9px}
    .trust-tags span{padding:8px 13px;border:1px solid #d8e3f0;border-radius:99px;background:#fff;color:#51647c;font-size:12px}
    .faq-list{display:grid;gap:10px}
    .faq-item{border:1px solid var(--line);border-radius:10px;background:#fff}
    .faq-question{width:100%;display:flex;justify-content:space-between;gap:15px;padding:18px 20px;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
    .faq-question:after{content:"+";color:var(--theme);font-size:20px;line-height:1}
    .faq-question.active:after{content:"−"}
    .faq-answer{max-height:0;overflow:hidden;padding:0 20px;color:var(--muted);font-size:14px;transition:.25s ease}
    .faq-answer.open{max-height:150px;padding-bottom:18px}
    @media(max-width:1120px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
    }
    @media(max-width:800px){
      .container{width:min(100% - 28px,620px)}
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-contact{flex-direction:column;gap:0;text-align:right}
      .header-inner{height:68px}
      .header-btns>a{display:none}
      .footer-main{grid-template-columns:1fr 1fr;gap:30px}
      .about-hero{padding:62px 0 52px}
      .about-hero p{font-size:16px}
      .section-heading{display:block}
      .section-heading p{margin-top:10px}
      .mission-grid,.value-layout{grid-template-columns:1fr}
      .value-layout{gap:28px}
      .trust-inner{display:block}
      .trust-tags{justify-content:flex-start;margin-top:17px}
    }
    @media(max-width:520px){
      .topbar{font-size:11px}
      .topbar-contact{display:none}
      .footer-main{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:4px 0}
      .about-hero h1{font-size:38px}
      .about-actions .btn{width:100%}
      .mission-card{min-height:0}
      .process-box{padding:23px}
    }