:root{--bg:#F4F7FA;--surface:#fff;--soft:#EAF1F6;--mint:#E9F8F8;--navy:#102E46;--deep:#163C57;--cyan:#13B8C5;--blue:#237BD3;--title:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}body.drawer-open{overflow:hidden}a{color:#1766A7;text-underline-offset:3px}a:hover{color:#075a77}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}img{max-width:100%;height:auto}button{font:inherit}h1,h2,h3{color:var(--title);line-height:1.38;margin:0 0 .7em}h1{font-size:clamp(27px,3.1vw,42px)}h2{font-size:clamp(21px,2.3vw,28px)}h3{font-size:clamp(18px,1.7vw,21px)}p{margin:.1em 0 1em}ul,ol{padding-left:1.35em}li+li{margin-top:.35em}.container{width:min(1200px,calc(100% - 56px));margin-inline:auto}.section{margin-top:60px;margin-bottom:60px}.section-heading{max-width:800px}.section-kicker{display:block;color:#087f8b;font-size:13px;font-weight:700;letter-spacing:.1em;margin-bottom:12px}.lede{font-size:18px;max-width:790px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;color:#087d8b;text-transform:uppercase}.muted{color:var(--muted)}.skip-link{position:absolute;z-index:1000;left:8px;top:-100px;background:white;padding:8px}.skip-link:focus{top:8px}
.brandbar{background:white;border-bottom:1px solid var(--line)}.brandbar-inner{min-height:72px;display:flex;align-items:center;gap:16px}.brand{display:inline-flex;align-items:center;text-decoration:none;color:var(--title)}.brand .media-frame{background:none;padding:0;border-radius:0;margin:0;max-width:180px;min-width:85px}.brand .media-frame img{max-height:38px}.brand .media-placeholder{font-size:14px;min-height:38px;white-space:nowrap}.brand-tagline{font-size:13px;color:var(--muted)}.register-link{margin-left:auto;background:var(--deep);color:white;padding:8px 18px;border-radius:9px;text-decoration:none;font-size:14px;font-weight:bold;white-space:nowrap}.register-link:hover{background:#0b5476;color:#fff}.desktop-nav{background:var(--navy)}.nav-inner{display:flex;min-height:50px;align-items:stretch;justify-content:space-between;gap:3px}.desktop-nav a{color:#e4f1f6;text-decoration:none;display:flex;align-items:center;justify-content:center;padding:10px 12px;position:relative;white-space:nowrap;font-size:15px}.desktop-nav a:hover,.desktop-nav a.is-current{color:#fff;background:#1b425e}.desktop-nav a.is-current{font-weight:700}.desktop-nav a.is-current::after{content:"";position:absolute;left:22px;right:22px;bottom:0;height:3px;background:var(--cyan)}.menu-toggle{display:none}.drawer-backdrop[hidden]{display:none!important}.drawer-backdrop{position:fixed;inset:0;background:rgba(8,31,48,.6);z-index:90;visibility:hidden;pointer-events:none}.drawer-backdrop.is-visible{visibility:visible;pointer-events:auto}.mobile-drawer{position:fixed;z-index:91;left:0;top:0;bottom:0;width:min(86vw,340px);background:#fff;box-shadow:5px 0 20px #0b253933;transform:translateX(-110%);visibility:hidden;pointer-events:none;overflow-y:auto;transition:transform .22s ease,visibility .22s}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{padding:18px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.drawer-close{width:42px;height:42px;background:var(--soft);border:0;border-radius:8px;font-size:25px;cursor:pointer}.drawer-group{color:#718291;letter-spacing:.13em;font-size:12px;font-weight:700;margin:18px 20px 6px}.mobile-drawer nav>a{display:block;text-decoration:none;padding:11px 22px;color:var(--title)}.mobile-drawer nav>a.is-current{background:var(--mint);font-weight:700;border-left:4px solid var(--cyan)}.nojs-nav{display:none}
.breadcrumbs{display:flex;gap:10px;font-size:13px;padding-top:23px;color:var(--muted)}.breadcrumbs a{text-decoration:none}.page-intro{padding:44px 0 20px;max-width:840px}.page-intro h1{font-size:clamp(26px,2.7vw,36px)}.page-intro p{max-width:780px}.hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);gap:36px;align-items:center;padding:52px 0 12px}.hero h1{margin:.2em 0 .5em}.hero p{max-width:610px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:23px}.button-link{background:var(--deep);color:#fff;padding:10px 18px;border-radius:9px;text-decoration:none;font-weight:700}.button-link.alt{background:var(--mint);color:#105e68}.button-link:hover{color:#fff;background:#126e80}.media-frame{min-width:0;margin:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:8px;background:var(--soft);border-radius:14px}.media-frame img{display:block;width:auto;height:auto;max-width:100%;max-height:var(--media-limit,220px);object-fit:contain;object-position:center}.media-frame figcaption{font-size:12px;color:var(--muted);margin-top:6px;text-align:center}.media-frame--hero{--media-limit:310px}.media-frame--feature{--media-limit:250px}.media-frame--card{--media-limit:185px}.media-frame--article{--media-limit:220px}.media-frame--banner{--media-limit:210px}.media-frame--mobile{--media-limit:350px;max-width:320px;margin:auto}.media-frame--logo{background:none;padding:0}.media-frame--logo img{max-height:38px}.media-placeholder{min-height:100px;width:100%;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;text-align:center;padding:16px;border:1px dashed #bdd1de;border-radius:8px}.media-frame--logo .media-placeholder{min-height:30px}.media-frame--hero .media-placeholder{min-height:190px}.media-frame--feature .media-placeholder{min-height:135px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:36px}.split--wide{grid-template-columns:minmax(0,1.3fr) minmax(0,.9fr)}.surface{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}.soft-band{background:var(--soft);padding:32px;border-radius:14px}.dark-band{background:var(--deep);color:#f1faff;padding:32px;border-radius:14px}.dark-band h2,.dark-band h3{color:white}.dark-band a{color:#a8fbff}.topic-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:40px}.topic-item{border-top:1px solid var(--line);padding:22px 0}.topic-item h3{margin-bottom:6px}.topic-item h3 a{color:var(--title);text-decoration:none}.topic-item p{margin-bottom:8px}.topic-item 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td{border-bottom:0}.layout-aside{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:38px;align-items:start}.side-index{position:relative;background:var(--soft);padding:22px;border-radius:10px}.side-index h2{font-size:18px}.side-index a{display:block;margin:9px 0}.exhibit{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center;margin:32px 0}.exhibit:nth-child(even) .media-frame{grid-column:2;grid-row:1}.exhibit:nth-child(even) .exhibit-text{grid-column:1;grid-row:1}.faq{max-width:880px}.faq details{border-bottom:1px solid var(--line);padding:13px 2px}.faq summary{cursor:pointer;color:var(--title);font-weight:700;list-style-position:outside;padding:4px}.faq details p{padding:8px 0 0 17px;margin:0}.service-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;align-items:start}.service-nav{background:var(--soft);padding:22px;border-radius:12px}.service-nav a{display:block;margin:8px 0}.service-articles 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#31536b;margin-top:26px;padding-top:16px;font-size:12px;color:#b5cddc}
@media(max-width:1200px){.container{width:calc(100% - 44px)}.desktop-nav a{padding:10px 7px;font-size:14px}}@media(max-width:920px){.brandbar-inner{min-height:62px;display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:8px}.brand{justify-self:center;min-width:0}.brand .media-frame img{max-height:30px}.brand .media-frame{max-width:145px}.brand-tagline,.desktop-nav{display:none}.register-link{font-size:13px;padding:7px 11px;margin:0}.menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;width:40px;height:40px;border:0;background:transparent;cursor:pointer}.menu-toggle span{width:22px;height:2px;background:var(--navy)}.nojs-nav{display:flex;flex-wrap:wrap;gap:8px 18px;padding:10px 0}.mobile-quick{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;border-top:1px solid var(--line);padding-top:18px}.mobile-quick a{font-size:13px}.section{margin-top:44px;margin-bottom:44px}.hero{padding-top:38px}}@media(max-width:760px){.grid-2,.grid-3,.split,.split--wide,.focus-grid,.layout-aside,.exhibit,.service-grid,.footer-grid{grid-template-columns:minmax(0,1fr)}.exhibit:nth-child(even) .media-frame,.exhibit:nth-child(even) .exhibit-text{grid-column:auto;grid-row:auto}.topic-index{grid-template-columns:1fr}.focus-side{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-path{grid-template-columns:repeat(2,minmax(0,1fr))}.related-row{grid-template-columns:1fr}.hero{grid-template-columns:1fr}.hero .media-frame{grid-row:2}.side-index{position:static}.service-grid .service-nav{grid-row:2}.exhibit{gap:14px}.footer-grid nav{gap:8px 15px}}@media(max-width:640px){body{font-size:15px}.container{width:calc(100% - 32px)}h1{font-size:30px}h2{font-size:22px}.page-intro h1{font-size:27px}.page-intro{padding-top:30px}.hero{gap:20px}.hero h1{font-size:30px}.lede{font-size:16px}.section{margin-top:35px;margin-bottom:35px}.soft-band,.dark-band{padding:20px}.surface,.focus-primary{padding:17px}.focus-side{grid-template-columns:1fr}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--article{--media-limit:175px}.media-frame--banner{--media-limit:135px}.media-frame--mobile{--media-limit:285px;max-width:250px}.brand .media-frame img{max-height:30px}.reading-path{gap:10px}.site-footer{margin-top:40px}.topic-item{padding:14px 0}}
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