:root{--bg:#F4F7FA;--white:#fff;--muted-bg:#EAF1F6;--tint:#E9F8F8;--nav:#102E46;--deep:#163C57;--cyan:#13B8C5;--blue:#237BD3;--title:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539;--footertext:#DCECF5}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word}a{color:#14649A;text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}h1,h2,h3,h4,p,figure{margin-top:0}h1,h2,h3{line-height:1.38;color:var(--title);letter-spacing:.01em}h1{font-size:clamp(2rem,3vw,2.3rem)}h2{font-size:1.65rem;margin-bottom:18px}h3{font-size:1.23rem;margin-bottom:11px}p{margin-bottom:17px}small,.eyebrow{color:var(--muted)}.wrap{width:min(100% - 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h3{color:#fff}.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.three-col{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.two-col>*,.three-col>*{min-width:0}.split-feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center}.split-feature>*,.feature-grid>*{min-width:0}.reverse-feature .media-frame{order:2}.reverse-feature .feature-text{order:1}.hero{display:grid;grid-template-columns:52fr 48fr;gap:32px;align-items:center;padding-block:50px 25px}.hero h1{font-size:clamp(2.4rem,3.5vw,2.75rem);margin-bottom:23px}.hero .media-frame{max-width:100%}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.outline-button{display:inline-flex;align-items:center;padding:9px 17px;min-height:42px;border:1px solid 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#13B8C5;border-radius:9px}.timeline{display:grid;gap:15px;counter-reset:timeline}.timeline-item{position:relative;padding:23px 24px 22px 72px;background:#fff;border:1px solid var(--line);border-radius:12px}.timeline-item:before{counter-increment:timeline;content:counter(timeline,decimal-leading-zero);position:absolute;left:23px;top:23px;color:#157FA2;font-weight:800;font-size:1.15rem}.timeline-item h3{margin-bottom:6px}.timeline-item p:last-child{margin-bottom:0}.gallery-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:start}.gallery-grid>article{min-width:0}.gallery-grid>article:nth-child(2){margin-top:45px}.gallery-grid figure{margin-bottom:19px}.rule-directory{max-width:790px}.rule-directory a{display:block;padding:10px 0;border-bottom:1px solid var(--line)}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:9px;margin:10px 0;padding:12px 18px}.faq-list summary{cursor:pointer;font-weight:700;color:var(--title)}.faq-list details p{margin:10px 0 2px}.service-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:35px}.service-layout>*{min-width:0}.service-index{position:sticky;top:20px;align-self:start}.service-index a{display:block;padding:9px 0;border-bottom:1px solid var(--line)}.service-article{max-width:860px}.related{padding-top:25px;border-top:1px solid var(--line)}.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.related-links a{padding:19px;background:#fff;border:1px solid var(--line);border-radius:10px;font-weight:700}.site-footer{background:var(--footer);color:var(--footertext);padding:42px 0 0}.footer-grid{display:grid;grid-template-columns:2.1fr 1fr 1fr;gap:45px}.site-footer a{color:var(--footertext)}.footer-brand{font-size:1.4rem;font-weight:800}.footer-brand span{font-size:.78rem;opacity:.8}.site-footer h2{color:white;font-size:1rem}.site-footer .footer-grid>div:not(:first-child) a{display:block;margin:8px 0;font-size:.92rem}.site-footer p{font-size:.9rem;color:#D2E1EA;margin-top:15px}.footer-bottom{border-top:1px solid #335267;padding:18px 0;color:#BDCFDC;font-size:.81rem;margin-top:26px}.callout-quote{border-left:4px solid var(--cyan);padding:10px 20px;margin:25px 0;color:var(--deep);background:var(--tint)}
@media(max-width:1200px){.wrap{width:calc(100% - 44px)}.brand-caption{font-size:.8rem}.desktop-nav a{font-size:.86rem}}
@media(max-width:920px){.brand-bar{height:64px;display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:9px}.brand{margin:0 auto;max-width:190px;justify-self:center}.brand-caption,.desktop-nav{display:none}.media-frame--logo{--media-limit:30px}.menu-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;width:40px;height:40px;background:white;border:1px solid var(--line);border-radius:8px;gap:5px;cursor:pointer}.menu-toggle span{width:19px;height:2px;background:var(--nav);display:block}.register-link{margin:0;font-size:.85rem;height:39px;padding:7px 12px}.menu-scrim:not([hidden]){display:block;position:fixed;inset:0;background:rgba(5,22,35,.58);z-index:39;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}.menu-scrim.is-open{opacity:1;visibility:visible;pointer-events:auto}.mobile-nav{display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:40;width:min(86vw,340px);padding:20px 22px;overflow-y:auto;background:#fff;box-shadow:10px 0 30px #041C3030;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s}.mobile-nav.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.mobile-nav a{display:block;color:var(--title);padding:10px 12px;border-radius:7px;font-weight:650}.mobile-nav a.is-current{border-left:4px solid var(--cyan);background:var(--tint)}.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.menu-close{border:0;background:var(--muted-bg);color:var(--nav);font-size:1.65rem;line-height:1;width:40px;height:40px;border-radius:8px;cursor:pointer}.drawer-group{color:var(--muted);text-transform:uppercase;font-size:.77rem;letter-spacing:.12em;font-weight:700;margin:15px 0 5px;padding-left:12px}.drawer-active{overflow:hidden}.mobile-quick{display:flex;flex-wrap:wrap;gap:15px;justify-content:center;padding-block:20px;font-size:.89rem}.article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:22px}.steps{grid-template-columns:repeat(2,minmax(0,1fr))}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}}
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@media(max-width:640px){body{font-size:15.5px;line-height:1.77}.wrap{width:calc(100% - 32px)}h1{font-size:1.75rem}h2{font-size:1.36rem}h3{font-size:1.13rem}.hero h1{font-size:1.94rem}.reading-section{margin-block:37px}.paper,.muted-panel,.tint-panel,.deep-panel{padding:18px}.hero{padding-top:22px}.topic-list,.three-col,.matrix{grid-template-columns:1fr}.topic-item{padding:15px 0}.staggered .paper:nth-child(n){transform:none}.focus-aside{gap:12px}.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--wide{--media-limit:135px}.media-frame--mobile{--media-limit:285px;max-width:250px}.media-frame--logo{--media-limit:30px}.timeline-item{padding:17px 15px 17px 53px}.timeline-item:before{left:13px;top:17px}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.footer-grid>div:first-child{grid-column:1/-1}.site-footer{padding-top:30px}.footer-bottom{font-size:.76rem}.step{padding:14px}.step strong{font-size:1.35rem}}
@media(max-width:370px){.brand-bar{grid-template-columns:40px minmax(0,1fr) 79px;gap:5px}.register-link{font-size:.75rem;padding:5px 6px}.brand{min-width:0}.media-frame--logo.media-unavailable{min-width:0;font-size:.62rem}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}