:root{--brand:#1769e0;--brand-deep:#0d4fae;--ink:#10203a;--ink-soft:#2d405e;--muted:#66758c;--line:#e5ebf3;--paper:#fff;--surface:#f5f8fc;--navy:#10213f;--navy-deep:#0a1730;--radius:18px;--shadow:0 22px 60px rgba(16,32,58,.11)}
*{box-sizing:border-box}html{min-width:1200px;scroll-behavior:smooth}body{min-width:1200px;margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 "PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.shell{width:calc(100% - 96px);max-width:1280px;margin:0 auto}.hide{display:none}.geo-site{overflow-x:hidden}
.site-header{position:sticky;top:0;z-index:50;height:82px;border-bottom:1px solid rgba(219,228,240,.82);background:rgba(255,255,255,.93);backdrop-filter:blur(18px);transition:height .22s ease,box-shadow .22s ease,background .22s ease}.site-header.is-scrolled{height:70px;box-shadow:0 7px 30px rgba(16,32,58,.08);background:rgba(255,255,255,.98)}.nav-wrap{height:100%;display:flex;align-items:center;gap:32px}.brand{display:inline-flex;align-items:center;gap:11px;min-width:0;font-size:18px;font-weight:800;letter-spacing:-.04em}.brand img{width:35px;height:35px;object-fit:contain}.brand-mark{display:grid;width:34px;height:34px;place-items:center;border-radius:10px;background:linear-gradient(135deg,var(--brand),#53a0ff);color:#fff;font:800 17px/1 Arial}.site-nav{display:flex;align-items:center;gap:31px;margin-left:auto}.site-nav a{position:relative;color:#4d5d74;font-size:14px;font-weight:600;transition:color .18s ease}.site-nav a:after{position:absolute;right:0;bottom:-10px;left:0;height:2px;border-radius:99px;background:var(--brand);content:"";opacity:0;transform:scaleX(.45);transition:opacity .18s ease,transform .18s ease}.site-nav a:hover{color:var(--brand)}.site-nav a:hover:after{opacity:1;transform:scaleX(1)}.nav-cta{display:inline-flex;align-items:center;gap:13px;margin-left:9px;padding:10px 16px;border-radius:9px;background:var(--brand);color:#fff;font-size:14px;font-weight:700;box-shadow:0 10px 20px rgba(23,105,224,.2);transition:background .18s ease,transform .18s ease,box-shadow .18s ease}.nav-cta:hover{background:var(--brand-deep);box-shadow:0 13px 25px rgba(23,105,224,.28);transform:translateY(-1px)}.nav-cta span{font-size:18px;line-height:1}
.section{padding:108px 0}.section-kicker{margin:0 0 12px;color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.15em}.section-heading{max-width:710px;margin-bottom:44px}.section-heading h2{margin:0;color:var(--ink);font-size:42px;line-height:1.24;letter-spacing:-.055em}.section-heading>p:not(.section-kicker){margin:15px 0 0;color:var(--muted);font-size:15px}.section-heading-center{margin-right:auto;margin-left:auto;text-align:center}.outline-link{display:inline-flex;align-items:center;gap:11px;color:var(--brand);font-size:14px;font-weight:800}.outline-link span{font-size:19px;transition:transform .18s ease}.outline-link:hover span{transform:translateX(4px)}
.site-footer{padding:70px 0 22px;background:var(--navy-deep);color:#b9c7dc}.footer-grid{display:grid;grid-template-columns:1.45fr .75fr .95fr;gap:95px}.brand-footer{color:#fff}.footer-brand p{max-width:340px;margin:18px 0 0;color:#98a9c2;font-size:14px}.footer-links h2{margin:5px 0 17px;color:#fff;font-size:14px}.footer-links a,.footer-links p{display:block;margin:8px 0;color:#aebdd3;font-size:14px;transition:color .18s ease}.footer-links a:hover{color:#fff}.footer-bottom{margin-top:54px;padding-top:18px;border-top:1px solid rgba(216,229,248,.15);color:#71839f;font-size:12px}
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/* GEO官网导航：桌面端悬停/键盘聚焦后展开二级菜单。 */
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