:root{--blue:#0B3D91;--ink:#11213d;--muted:#64748b;--line:#dbe5f2;--soft:#f4f8fc;--white:#fff;--gold:#d8a84e}
    *{box-sizing:border-box}
    body{margin:0;color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;background:#fff;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{background:#071d45;color:#d9e6fa;font-size:13px}
    .topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{margin-left:20px;color:#d9e6fa}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--blue);white-space:nowrap}
    .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;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;font-size:15px;font-weight:600;white-space:nowrap}
    .nav-link:hover{color:var(--blue)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8190a6}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);width:280px;padding:14px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px #102b531a;border-radius:0 0 12px 12px;opacity:0;visibility:hidden;transition:.2s;z-index:30}
    .mega-menu{width:700px}
    .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}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .dropdown-panel>a:not(.mega-footer){display:block;padding:8px 10px;border-bottom:1px solid #edf2f8;font-size:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{display:block;padding:10px;border:1px solid #e7edf5;border-radius:9px;background:#fbfdff;min-height:86px}
    .mega-card:hover{border-color:var(--blue);background:#f3f7fd}
    .mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:5px}
    .mega-card strong{display:block;font-size:13px;line-height:1.4}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5;margin-top:3px}
    .mega-footer{display:block;margin-top:12px;padding-top:10px;border-top:1px solid var(--line);color:var(--blue);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:13px;white-space:nowrap}
    .account-link{border:1px solid var(--blue);color:var(--blue);padding:7px 13px;border-radius:6px;font-size:13px}
    .hamburger{display:none;border:0;background:transparent;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:24px;height:2px;background:var(--ink);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:#06173199;opacity:0;visibility:hidden;transition:.2s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(360px,88vw);background:#fff;transform:translateX(100%);transition:.25s;z-index:41;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;display:flex;align-items:center;gap:14px;padding:0 20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--blue);font-size:14px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 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;color:var(--ink);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:4px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#091a36;color:#b7c5da;padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:16px}
    .footer p{margin:7px 0;font-size:13px}
    .footer a{display:block;margin:7px 0;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-bottom{border-top:1px solid #ffffff20;margin-top:36px;padding-top:18px;text-align:center;font-size:12px;color:#8495af}
    .about-page{background:linear-gradient(180deg,#f7faff 0,#fff 460px);padding-bottom:1px}
    .about-hero{padding:78px 0 64px;text-align:center;position:relative;overflow:hidden}
    .about-hero:before,.about-hero:after{content:"";position:absolute;border:1px solid #0b3d9118;border-radius:50%;z-index:0}
    .about-hero:before{width:420px;height:420px;left:-160px;top:-120px}
    .about-hero:after{width:540px;height:540px;right:-250px;top:-190px}
    .about-hero>*{position:relative;z-index:1}
    .eyebrow{display:inline-block;padding:5px 13px;border-radius:30px;background:#e6effb;color:var(--blue);font-size:13px;font-weight:700;letter-spacing:1px}
    .about-hero h1{margin:18px 0 13px;font-size:clamp(34px,5vw, sixty);font-size:clamp(34px,5vw,60px);line-height:1.15;letter-spacing:-2px}
    .about-hero p{max-width:680px;margin:0 auto;color:var(--muted);font-size:17px}
    .about-section{padding:62px 0}
    .section-heading{text-align:center;margin-bottom:32px}
    .section-heading h2{margin:0 0 8px;font-size:30px}
    .section-heading p{margin:0;color:var(--muted)}
    .mission{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
    .mission-card{padding:32px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 35px #0b3d910b}
    .mission-card.primary{background:var(--blue);color:#fff;border-color:var(--blue)}
    .mission-card h3{margin:0 0 13px;font-size:21px}
    .mission-card p{margin:0;color:inherit;opacity:.82}
    .value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .value-card{padding:25px 21px;background:#fff;border:1px solid var(--line);border-radius:13px}
    .value-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:#e8f0fc;color:var(--blue);font-weight:800;font-size:18px}
    .value-card h3{font-size:17px;margin:16px 0 7px}
    .value-card p{font-size:13px;color:var(--muted);margin:0}
    .timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .timeline:before{content:"";position:absolute;left:10%;right:10%;top:20px;height:2px;background:#cbdaf0}
    .timeline-item{position:relative;padding-top:48px;text-align:center}
    .timeline-dot{position:absolute;top:10px;left:50%;transform:translateX(-50%);width:22px;height:22px;border:6px solid #dce9fa;border-radius:50%;background:var(--blue);z-index:1}
    .timeline-item strong{display:block;color:var(--blue);font-size:24px}
    .timeline-item h3{margin:6px 0;font-size:17px}
    .timeline-item p{margin:0;color:var(--muted);font-size:13px}
    .about-cta{padding:45px 30px;text-align:center;border-radius:18px;background:linear-gradient(110deg,#0B3D91,#1672bd);color:#fff}
    .about-cta h2{margin:0 0 8px;font-size:28px}
    .about-cta p{margin:0 auto 20px;color:#dcecff}
    .about-cta a{display:inline-block;padding:10px 22px;border-radius:6px;background:#fff;color:var(--blue);font-weight:700;font-size:14px}
    @media(max-width:1050px){.nav-link{padding-left:8px;padding-right:8px}.header-inner{gap:12px}.mega-menu{width:620px}}
    @media(max-width:800px){.container{width:min(100% - 28px,680px)}.topbar .container{height:auto;min-height:36px;padding:7px 0;align-items:flex-start;gap:5px}.topbar .contact{display:flex;flex-direction:column}.topbar a{margin-left:0}.main-nav{display:none}.hamburger{display:block}.account-link{display:none}.footer-grid{grid-template-columns:repeat(2,1fr)}.mission{grid-template-columns:1fr}.value-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:520px){.about-hero{padding:55px 0 45px}.about-hero h1{font-size:38px}.about-hero p{font-size:15px}.about-section{padding:45px 0}.value-grid{grid-template-columns:1fr}.timeline{grid-template-columns:1fr;gap:24px}.timeline:before{left:50%;top:20px;bottom:20px;width:2px;height:auto}.timeline-item{padding-top:48px}.footer-grid{grid-template-columns:1fr;gap:22px}}