:root{--bg:#F4F7FA;--surface:#fff;--subtle:#EAF1F6;--mint:#E9F8F8;--nav:#102E46;--deep:#163C57;--teal:#087C88;--bright:#13B8C5;--blue:#237BD3;--heading:#18364B;--body:#344C60;--muted:#64798A;--line:#DCE6ED;--space:clamp(30px,4vw,64px)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font:16.5px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word}body.drawer-active{overflow:hidden}a{color:#076D90;text-underline-offset:3px}a:hover{color:#124b75}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--bright);outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto}.shell{width:min(100% - 56px,1200px);margin-inline:auto}.site-header{background:#fff}.brand-bar{border-bottom:1px solid var(--line)}.brand-inner{height:72px;display:flex;gap:20px;align-items:center}.brand{display:flex;align-items:center;min-width:0;text-decoration:none}.brand-caption{font-size:13px;color:var(--muted);letter-spacing:.03em}.register-link{margin-left:auto;background:var(--nav);color:#fff;border-radius:10px;text-decoration:none;padding:9px 23px;font-weight:700;white-space:nowrap}.register-link:hover{background:#23526e;color:#fff}.desktop-nav{background:var(--nav)}.nav-row{height:50px;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));align-items:stretch}.nav-row a{position:relative;min-width:0;color:#e5f3fb;text-align:center;display:flex;justify-content:center;align-items:center;padding:0 5px;text-decoration:none;font-weight:600;font-size:15px;white-space:nowrap}.nav-row a:hover,.nav-row a[aria-current]{color:#fff;background:#20445e}.nav-row a[aria-current]::after{content:"";position:absolute;bottom:0;width:46%;height:3px;background:var(--bright)}.menu-toggle,.nojs-nav{display:none}.skip-link{position:absolute;top:-100px;left:12px;z-index:100;background:#fff;padding:8px}.skip-link:focus{top:8px}.mobile-drawer{position:fixed;z-index:120;left:0;top:0;bottom:0;width:min(86vw,340px);overflow-y:auto;padding:20px;background:#fff;box-shadow:8px 0 24px #031b3330;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .23s,visibility .23s}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-overlay{position:fixed;inset:0;background:rgba(7,25,40,.57);opacity:0;visibility:hidden;pointer-events:none;z-index:110;transition:opacity .23s,visibility .23s}.drawer-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.drawer-top{display:flex;justify-content:space-between;align-items:center}.drawer-title{font-size:20px;font-weight:800;color:var(--heading)}.drawer-close{border:1px solid var(--line);background:#fff;width:42px;height:42px;border-radius:10px;font-size:28px;line-height:1}.mobile-drawer nav h2{font-size:13px;text-transform:uppercase;margin:25px 0 5px;color:var(--muted)}.mobile-drawer nav a{display:block;padding:9px 12px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--heading)}.mobile-drawer nav a[aria-current]{border-left:3px solid var(--bright);font-weight:800;background:var(--mint)}
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