:root{--theme:#0B3D91;--ink:#172033;--muted:#64748b;--line:#dbe4ef;--bg:#f5f8fc;--white:#fff}
    *{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font:15px/1.7 Arial,"Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 36px));margin:auto}
    .topbar{background:#102746;color:#dbeafe;font-size:13px}.topbar .container{min-height:36px;display:flex;justify-content:space-between;align-items:center}.topbar-links{display:flex;gap:22px}.header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:76px;display:flex;align-items:center;gap:35px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--theme);font-size:20px;white-space:nowrap}.logo img{width:38px;height:38px;object-fit:contain}.main-nav{flex:1}.nav-list{display:flex;justify-content:center;gap:5px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:25px 13px;font-weight:600}.nav-link:hover{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;transition:.2s;background:#fff;border:1px solid var(--line);box-shadow:0 16px 38px #17203320;border-radius:0 0 14px 14px;padding:18px;z-index:30}.dropdown-panel{width:260px}.dropdown-panel a{display:block;padding:8px;border-bottom:1px solid #eef2f7}.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{visibility:visible;opacity:1}.mega-section-title{font-weight:800;margin:0 0 12px;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 #e7edf5;border-radius:10px}.mega-card img{width:42px;height:42px;object-fit:cover;border-radius:8px}.mega-card span{min-width:0}.mega-card strong,.mega-card small{display:block}.mega-card small{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mega-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;color:var(--theme);font-weight:700}.header-btns{display:flex;align-items:center;gap:15px}.member-btn{background:var(--theme);color:#fff;padding:9px 15px;border-radius:8px;font-weight:700}.hamburger{display:none;border:0;background:transparent;padding:7px}.hamburger span{display:block;width:24px;height:2px;margin:5px;background:var(--ink)}
    .about-page{padding:58px 0 76px}.page-heading{text-align:center;max-width:760px;margin:0 auto 42px}.eyebrow{color:var(--theme);font-weight:800;letter-spacing:.12em}.page-heading h1{font-size:clamp(32px,5vw,54px);line-height:1.15;margin:12px 0}.page-heading p{color:var(--muted);font-size:17px}.about-intro{display:grid;grid-template-columns:1.2fr .8fr;gap:25px;align-items:stretch;margin-bottom:30px}.about-panel,.trust-card,.timeline-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 12px 30px #16335c0b}.about-panel{padding:32px}.about-panel h2,.trust-section h2,.timeline-section h2{margin-top:0;font-size:27px}.about-panel p{color:#526176}.fact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.fact{padding:22px;background:#eaf1fb;border-radius:16px}.fact strong{display:block;font-size:30px;color:var(--theme)}.fact span{color:var(--muted)}.trust-section,.timeline-section{margin-top:35px}.trust-section h2,.timeline-section h2{text-align:center}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.trust-card{padding:24px}.trust-card b{color:var(--theme);font-size:25px}.trust-card h3{margin:8px 0}.trust-card p{color:var(--muted);margin-bottom:0}.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.timeline:before{content:"";position:absolute;top:28px;left:10%;right:10%;height:2px;background:#b9cce7}.timeline-card{position:relative;padding:22px;background:#fff}.timeline-card strong{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--theme);color:#fff}.timeline-card h3{margin:14px 0 5px}.timeline-card p{margin:0;color:var(--muted)}
    .footer{background:#102033;color:#d9e4f3;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}.footer h3{font-size:15px;color:#fff}.footer a{display:block;margin:7px 0;color:#b9c8dc}.footer-brand strong{font-size:21px;color:#fff}.footer-brand p{color:#aebed1}.footer-bottom{border-top:1px solid #31445d;margin-top:30px;padding-top:18px;display:flex;justify-content:space-between;color:#9fb0c5;font-size:13px}
    .drawer-overlay{display:none}.mobile-drawer{position:fixed;right:-360px;top:0;width:min(360px,88%);height:100vh;background:#fff;z-index:50;transition:.25s;overflow:auto}.mobile-drawer.open{right:0}.drawer-overlay.open{display:block;position:fixed;inset:0;background:#07142699;z-index:40}.drawer-head{display:flex;align-items:center;gap:18px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head>a{margin-left:auto;color:var(--theme)}.drawer-close{font-size:26px;border:0;background:none}.drawer-menu{padding:12px 20px}.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}.drawer-toggle:after{content:"＋";float:right}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding-left:15px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:9px 0;color:var(--muted)}
    @media(max-width:850px){.main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between}.header-btns{margin-left:auto}.about-intro,.timeline{grid-template-columns:1fr}.timeline:before{display:none}.trust-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:560px){.topbar .container{display:block;padding:7px 0}.topbar-links{gap:12px}.member-btn{display:none}.about-page{padding-top:38px}.about-panel{padding:23px}.fact-grid,.trust-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}}