*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:#F4F7FA;color:#344C60;font:16px/1.82 Arial,"PingFang SC","Microsoft YaHei",sans-serif}body.drawer-open{overflow:hidden}a{color:#12659f;text-underline-offset:4px}a:hover{color:#0a8d9a}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{color:#18364B;line-height:1.4}h1{font-size:clamp(2rem,3vw,2.75rem);letter-spacing:-.025em}h2{font-size:clamp(1.45rem,2.1vw,1.75rem);margin-bottom:22px}h3{font-size:1.22rem;margin-bottom:12px}p{margin-bottom:19px}button{font:inherit}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #13B8C5;outline-offset:3px}.wrap{max-width:1200px;padding:0 28px;margin:auto}.skip{position:absolute;z-index:200;left:10px;top:-70px;background:white;padding:8px}.skip:focus{top:8px}.site-header{background:#fff;position:relative;z-index:20}.brand-bar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:16px;text-decoration:none;min-width:0}.brand-copy{font-size:13px;color:#64798A;white-space:nowrap}.brand .media-frame{background:none;border:0;padding:0;width:auto;max-width:185px;max-height:38px;margin:0}.brand img{height:auto;max-height:38px;width:auto;max-width:185px}.brand .media-missing{min-width:138px;min-height:35px}.brand .media-missing span{font-size:12px}.entry{white-space:nowrap;background:#163C57;color:white!important;text-decoration:none;font-weight:700;border-radius:9px;padding:7px 18px}.desktop-nav{background:#102E46}.nav-line{display:flex;align-items:stretch;justify-content:space-between;gap:3px}.nav-line a{position:relative;flex:1;text-align:center;text-decoration:none;color:#eaf3f8;font-size:15px;padding:12px 5px;white-space:nowrap;font-weight:600}.nav-line a:hover{background:#163C57}.nav-line [aria-current=page]{font-weight:800;color:white}.nav-line [aria-current=page]:after{content:"";position:absolute;bottom:0;height:3px;left:30%;right:30%;background:#13B8C5}.menu-toggle,.drawer,.drawer-overlay,.mobile-shortcuts,.back-top,.nojs-nav{display:none}.page{padding-top:30px;padding-bottom:64px}.crumb{display:flex;gap:9px;font-size:13px;color:#64798A;margin-bottom:20px}.crumb a{color:#64798A}.section{margin:56px 0}.section[id]{scroll-margin-top:24px}.lead{font-size:17px;line-height:1.85;max-width:870px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;color:#087f91;text-transform:uppercase}.page-intro{padding:28px 36px 30px;border-left:5px solid #13B8C5;background:#EAF1F6;margin-bottom:35px}.page-intro h1{font-size:clamp(1.7rem,2.6vw,2.3rem);margin-bottom:16px}.page-intro p:last-child{margin-bottom:0}.hero-grid,.split,.two-col,.feature-split{display:grid;grid-template-columns:1.1fr 1fr;gap:42px;align-items:center}.hero-grid{padding:36px 0 24px;grid-template-columns:52fr 48fr}.hero-grid h1{max-width:690px}.hero-grid .lead{max-width:620px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}.btn{display:inline-flex;align-items:center;border-radius:10px;text-decoration:none;padding:10px 18px;background:#163C57;color:white!important;font-weight:700}.btn.secondary{background:#e9f8f8;color:#126179!important;border:1px solid #b7e1e4}.media-frame{display:flex;align-items:center;justify-content:center;min-width:0;width:100%;padding:8px;margin:0;border:1px solid #DCE6ED;border-radius:14px;background:#EAF1F6;--media-limit:220px}.media-frame img{display:block;width:auto;height:auto;max-width:100%;max-height:var(--media-limit);object-fit:contain;object-position:center}.media-frame--hero{--media-limit:310px}.media-frame--feature{--media-limit:250px}.media-frame--card{--media-limit:185px}.media-frame--mobile{--media-limit:350px;max-width:320px;margin:auto}.media-frame--banner{--media-limit:210px}.media-frame--logo{--media-limit:38px}.media-missing{min-height:105px;color:#64798A;font-size:13px;text-align:center}.media-frame--hero.media-missing{min-height:190px}.media-frame--card.media-missing{min-height:105px}.media-frame--logo.media-missing{min-height:34px}.topic-index{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}.topic-index article{border-bottom:1px solid #DCE6ED;padding:20px 0}.topic-index article h3{margin:0 0 7px}.topic-index article p{font-size:15px;margin:0 0 9px}.topic-index a{font-weight:700}.focus-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}.feature-panel{background:#fff;padding:28px;border-top:4px solid #13B8C5}.focus-side{display:grid;gap:20px}.focus-side article{padding:22px 24px;background:#EAF1F6}.muted-section{background:#EAF1F6;padding:30px;border-radius:12px}.inline-band{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;border-top:1px solid #DCE6ED;border-bottom:1px solid #DCE6ED;padding:28px 0}.inline-band article:nth-child(2){padding-top:22px}.inline-band article:nth-child(3){padding-top:45px}.path-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.path-steps a{display:block;text-decoration:none;padding:20px;background:white;border:1px solid #DCE6ED;border-top:3px solid #13B8C5;border-radius:8px;min-height:125px}.path-steps b,.path-steps small{display:block}.path-steps small{margin-top:8px;font-size:13px;color:#64798A}.note{padding:22px 26px;background:#e9f8f8;border-left:3px solid #13B8C5}.article-reading{max-width:790px}.article-reading p{line-height:1.85}.wide-reading{max-width:950px}.section-head{max-width:800px}.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;padding:14px 0;border-top:1px solid #DCE6ED;border-bottom:1px solid #DCE6ED;margin-bottom:34px}.anchor-nav a{padding:6px 12px;background:#fff;text-decoration:none;border-radius:6px;font-weight:700;font-size:14px}.knowledge-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:32px;align-items:start}.aside-facts{padding:24px;background:#EAF1F6;border-radius:10px}.aside-facts ul{padding-left:20px}.aside-facts li{margin-bottom:11px}.flow-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.flow-steps article{border-left:3px solid #13B8C5;background:white;padding:20px}.step-label{font-size:13px;font-weight:800;color:#147589}.table-scroll{width:100%;overflow-x:auto;margin:22px 0 35px;background:#fff;border:1px solid #DCE6ED;border-radius:9px}table{width:100%;border-collapse:collapse;text-align:left;min-width:560px;font-size:15px}caption{caption-side:top;text-align:left;padding:16px 19px;font-weight:700;color:#18364B}th,td{padding:13px 18px;border-bottom:1px solid #DCE6ED;vertical-align:top}th{background:#EAF1F6;color:#18364B}tr:last-child td{border-bottom:0}.numbered{counter-reset:step;padding-left:0;list-style:none}.numbered li{counter-increment:step;border-left:2px solid #DCE6ED;padding:0 0 23px 30px;position:relative}.numbered li:before{content:counter(step);position:absolute;left:-15px;top:0;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:#163C57;color:#fff;font-size:13px}.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.matrix article{border:1px solid #DCE6ED;border-radius:10px;padding:24px;background:#fff}.gallery{display:grid;grid-template-columns:1.15fr .85fr;gap:30px;align-items:start}.gallery article:nth-child(2){padding-top:52px}.exhibit{background:#fff;padding:18px;border:1px solid #DCE6ED;border-radius:12px}.exhibit h3{margin-top:18px}.rule-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:38px;align-items:start}.rule-sidebar{background:#fff;border:1px solid #DCE6ED;padding:23px;border-radius:10px}.rule-sidebar a,.service-nav a{display:block;margin:12px 0}.service-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:35px}.service-nav{background:#EAF1F6;padding:24px;align-self:start;border-radius:10px}.faq details{background:#fff;border:1px solid #DCE6ED;margin:9px 0;border-radius:8px;padding:0 17px}.faq summary{cursor:pointer;font-weight:700;padding:13px 6px;color:#18364B}.faq details p{padding:2px 6px 15px;margin:0}.related{margin-top:56px;background:#EAF1F6;padding:28px 30px;border-radius:10px}.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.related-links a{padding:15px;background:#fff;text-decoration:none;font-weight:700;border-radius:7px}.site-footer{background:#0B2539;color:#DCECF5}.footer-inner{display:flex;justify-content:space-between;gap:35px;padding-top:44px;padding-bottom:45px}.site-footer strong{font-size:21px;color:white}.site-footer small{font-size:12px;margin-left:10px;letter-spacing:.1em}.site-footer p{font-size:14px;max-width:610px;color:#DCECF5;margin:9px 0}.site-footer nav{display:flex;flex-wrap:wrap;max-width:320px;gap:9px 19px;align-content:start}.site-footer a{color:#DCECF5;font-size:14px}.back-top{display:block;position:fixed;right:22px;bottom:24px;z-index:9;background:#163C57;color:white;border:0;border-radius:50%;width:43px;height:43px;cursor:pointer}.back-top[hidden]{display:none}@media(max-width:1024px){.wrap{padding-left:22px;padding-right:22px}.hero-grid,.split,.feature-split{gap:26px}.brand-copy{font-size:12px}}@media(max-width:920px){.brand-bar{height:62px;display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:8px}.brand{justify-self:center}.brand .media-frame,.brand img{max-height:30px;max-width:155px}.brand-copy{display:none}.menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;background:none;border:1px solid #DCE6ED;border-radius:8px}.menu-toggle span{display:block;width:19px;height:2px;background:#163C57}.entry{font-size:13px;padding:8px 10px}.desktop-nav{display:none}.drawer-overlay{display:block;position:fixed;inset:0;z-index:39;background:rgba(10,30,45,.5);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.drawer{display:block;position:fixed;top:0;bottom:0;left:0;width:min(86vw,340px);background:white;z-index:40;overflow-y:auto;transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .2s,visibility .2s;padding:20px 24px;box-shadow:4px 0 20px #0002}.drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:14px;border-bottom:1px solid #DCE6ED}.drawer-close{background:none;border:0;font-size:33px;line-height:1;width:42px;height:42px}.drawer-group{border-bottom:1px solid #DCE6ED;padding:18px 0}.drawer-group b{display:block;font-size:13px;color:#64798A}.drawer-group a{display:block;padding:9px 0;color:#18364B;text-decoration:none}.drawer-group [aria-current=page]{color:#12659f;font-weight:800;border-left:3px solid #13B8C5;padding-left:12px}.mobile-shortcuts{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding-top:19px;padding-bottom:19px;border-top:1px solid #DCE6ED;font-size:13px}.nojs-nav{display:flex;flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px}.nojs-nav a{font-size:13px}}@media(max-width:760px){.hero-grid,.split,.two-col,.feature-split,.knowledge-grid,.gallery,.service-layout,.rule-layout{grid-template-columns:1fr}.focus-grid{grid-template-columns:1fr}.flow-steps,.matrix{grid-template-columns:1fr}.path-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery article:nth-child(2){padding-top:0}.service-layout .service-nav{order:2}.footer-inner{flex-direction:column}.page-intro{padding:22px}.section{margin:42px 0}.article-reading{max-width:100%}}@media(max-width:640px){body{font-size:15px;line-height:1.78}.wrap{padding-left:16px;padding-right:16px}.page{padding-top:22px;padding-bottom:44px}h1{font-size:clamp(1.7rem,7vw,2rem)}h2{font-size:1.35rem}h3{font-size:1.1rem}.hero-grid{padding-top:10px}.hero-grid .lead{font-size:15px}.lead{font-size:15px}.topic-index{grid-template-columns:1fr}.inline-band{grid-template-columns:1fr;gap:0}.inline-band article:nth-child(2),.inline-band article:nth-child(3){padding-top:0}.path-steps{gap:9px}.path-steps a{padding:12px;min-height:120px}.feature-panel{padding:18px}.muted-section{padding:20px}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--mobile{--media-limit:285px;max-width:250px}.media-frame--banner{--media-limit:135px}.media-frame--logo{--media-limit:30px}.media-frame--hero.media-missing{min-height:125px}.related-links{grid-template-columns:1fr}.related{padding:19px}.footer-inner{padding-top:32px;padding-bottom:32px}.entry{font-size:12px;padding:7px 9px}.brand .media-missing{min-width:112px;min-height:28px}.anchor-nav a{font-size:13px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
