:root{--bg:#F4F7FA;--white:#fff;--soft:#EAF1F6;--aqua:#E9F8F8;--nav:#102E46;--dark:#163C57;--teal:#13B8C5;--blue:#237BD3;--title:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--foot:#0B2539;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;min-width:0;overflow-x:clip}img{max-width:100%}a{color:#09679B;text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#09668b}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:3px}button{font:inherit;cursor:pointer}p,li{line-height:1.82}p{margin:0 0 1.05em}h1,h2,h3{color:var(--title);line-height:1.36;margin:0 0 .72em}h1{font-size:clamp(2rem,3vw,2.75rem);letter-spacing:-.025em}h2{font-size:clamp(1.5rem,2.25vw,1.75rem)}h3{font-size:clamp(1.12rem,1.6vw,1.3rem)}.container{width:min(100% - 56px,1200px);margin-inline:auto}.section{margin-block:60px}.section-top{display:flex;align-items:baseline;gap:20px;justify-content:space-between;border-bottom:1px solid var(--line);margin-bottom:24px;padding-bottom:12px}.section-top p{margin:0;color:var(--muted)}.eyebrow{color:#087685;font-weight:800;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase}.muted{color:var(--muted)}.small{font-size:.9rem}.skip-link{position:absolute;top:-100px;left:12px;z-index:200;background:white;padding:12px}.skip-link:focus{top:8px}.brand-bar{background:var(--white)}.brand-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:20px;text-decoration:none;min-width:0;color:var(--title)}.brand-note{font-size:13px;color:var(--muted);padding-left:20px;border-left:1px solid var(--line);white-space:nowrap}.logo-art{display:block;min-width:0}.media-frame{display:flex;justify-content:center;align-items:center;width:100%;min-width:0;padding:8px;margin:0;border-radius:14px;background:var(--soft)}.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--hero{--media-limit:310px}.media-frame--feature{--media-limit:250px}.media-frame--card{--media-limit:185px}.media-frame--banner{--media-limit:210px}.media-frame--mobile{--media-limit:350px;max-width:320px;margin-inline:auto}.media-frame--logo{background:transparent;padding:0;border-radius:0;--media-limit:38px;width:auto}.media-frame--logo img{max-height:38px;max-width:210px}.media-missing{color:#64798A;font-size:13px;text-align:center;min-height:90px;border:1px dashed #cbdbe4}.media-missing.media-frame--hero{min-height:190px}.media-missing.media-frame--logo{min-height:32px;min-width:116px}.register-link{background:var(--nav);color:white;text-decoration:none;display:inline-flex;justify-content:center;align-items:center;white-space:nowrap;min-height:42px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:700}.register-link:hover{background:var(--dark);color:#fff}.primary-nav{background:var(--nav)}.nav-inner{height:50px;display:flex;justify-content:space-between;align-items:stretch;gap:6px}.nav-inner a{position:relative;color:#deedf5;display:inline-flex;align-items:center;justify-content:center;flex:1 1 auto;min-width:0;white-space:nowrap;text-decoration:none;font-size:14px;padding:0 8px}.nav-inner a:hover,.nav-inner a.is-active{color:white;font-weight:700}.nav-inner a.is-active:after{content:"";position:absolute;bottom:0;left:calc(50% - 15px);width:30px;height:3px;background:var(--teal);border-radius:3px}.menu-toggle{display:none}.mobile-drawer,.drawer-overlay,.mobile-quick,.nojs-nav{display:none}.breadcrumbs{display:flex;gap:12px;align-items:center;font-size:13px;color:var(--muted);margin:28px 0 18px}.breadcrumbs a{color:var(--muted)}.page-heading{padding:12px 0 26px;border-bottom:1px solid var(--line)}.page-heading h1{font-size:clamp(1.8rem,3vw,2.25rem)}.page-lead{font-size:17px;max-width:850px;line-height:1.85;margin:0}.page-body{padding-bottom:45px}.article{max-width:790px}.article p,.prose p{font-size:16px}.article h2,.prose h2{margin-top:1.5em}.panel{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff}.panel--aqua{background:var(--aqua)}.panel--dark{background:var(--dark);color:#eaf6fb;border-color:var(--dark)}.panel--dark h2,.panel--dark h3{color:white}.section-line{border-top:1px solid var(--line);padding-top:22px}.link-button{display:inline-flex;align-items:center;justify-content:center;background:var(--nav);color:white;padding:12px 20px;border-radius:10px;text-decoration:none;font-size:14px;font-weight:700;min-height:44px}.link-button:hover{color:white;background:#21506e}.link-button--outline{background:transparent;color:var(--nav);border:1px solid #b1cbd7}.link-button--outline:hover{background:#eaf5f7;color:var(--nav)}.button-row{display:flex;flex-wrap:wrap;gap:12px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center}.split>*{min-width:0}.split--wide{grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr)}.split--reverse{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr)}.cover{padding:42px 0 24px;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);align-items:center;gap:40px}.cover h1{font-size:clamp(2rem,3vw,2.75rem)}.cover p{font-size:16px}.cover .eyebrow{font-size:12px}.topic-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px}.topic-item{border-top:1px solid var(--line);padding:22px 8px 24px 0}.topic-item a{font-size:19px;font-weight:700;color:var(--title);text-decoration:none}.topic-item a:hover{text-decoration:underline}.topic-item p{margin:8px 0 0;font-size:15px}.editor-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:20px}.editor-feature{background:var(--dark);padding:30px;border-radius:14px}.editor-feature h3,.editor-feature p{color:white}.editor-feature .eyebrow{color:#86edf0}.editor-mini{border-top:2px solid var(--teal);padding:18px 0}.editor-mini h3{font-size:19px}.editor-minis{padding:2px 10px}.editor-mini+ .editor-mini{margin-top:18px}.band{background:var(--soft);padding:30px;border-radius:14px}.text-triptych{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:start}.text-triptych article{padding:24px;background:white;border:1px solid var(--line);border-radius:12px}.text-triptych article:nth-child(2){margin-top:22px}.text-triptych article:nth-child(3){margin-top:44px}.steps-four{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;counter-reset:step}.steps-four article{border-top:3px solid var(--teal);padding-top:14px}.steps-four article:before{counter-increment:step;content:'0' counter(step);display:block;color:#007a89;font-size:13px;font-weight:800;margin-bottom:8px}.steps-four h3{font-size:18px}.anchor-nav{display:flex;gap:10px;flex-wrap:wrap;padding:17px 0;border-bottom:1px solid var(--line)}.anchor-nav a{border:1px solid #b8d3e2;background:#fff;border-radius:9px;padding:9px 14px;color:var(--title);text-decoration:none;font-size:14px;font-weight:700}.anchor-nav a:hover{background:var(--aqua)}.fact-layout{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(230px,.8fr);gap:38px}.fact-layout>*{min-width:0}.fact-aside{align-self:start;position:sticky;top:20px;background:var(--aqua);border:1px solid #cde8e9;padding:22px;border-radius:12px}.fact-aside h3{font-size:18px}.fact-aside ul{padding-left:18px}.fact-aside li{font-size:14px;margin-bottom:12px}.flow-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.flow-steps article{padding:16px;border:1px solid var(--line);background:white;border-top:3px solid var(--teal)}.flow-steps strong{display:block;margin-bottom:6px;color:var(--title)}.table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}.table-scroll table{width:100%;border-collapse:collapse;min-width:600px;text-align:left}.table-scroll caption{text-align:left;font-weight:700;color:var(--title);padding:15px 18px;border-bottom:1px solid var(--line)}th,td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.75;font-size:15px}th{background:#eaf1f6;color:var(--title);font-weight:700}tr:last-child td{border-bottom:0}.numbered{counter-reset:num;display:grid;gap:18px}.numbered article{position:relative;border-left:3px solid var(--teal);padding:3px 18px 3px 58px;background:linear-gradient(90deg,#eaf7f8 0,transparent 85%)}.numbered article:before{counter-increment:num;content:counter(num);position:absolute;left:16px;top:6px;font-size:24px;color:#078391;font-weight:800}.numbered h3{margin:0 0 6px}.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.matrix article{background:white;border:1px solid var(--line);border-radius:12px;padding:23px}.matrix article:nth-child(2){background:var(--aqua)}.matrix h3{margin-bottom:12px}.gallery-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.gallery-entry{border-top:2px solid var(--teal);padding-top:18px}.gallery-entry:nth-child(2){margin-top:52px}.gallery-entry:nth-child(3){grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:26px}.gallery-entry h3{margin-top:15px}.manual-layout{display:grid;grid-template-columns:minmax(0,250px) minmax(0,1fr);gap:38px;align-items:start}.manual-aside{position:sticky;top:18px;border:1px solid var(--line);border-radius:12px;background:white;padding:18px}.manual-aside a,.service-aside a{display:block;padding:9px 2px}.manual-main{min-width:0}.rule-section{padding-top:18px;border-top:1px solid var(--line);margin-top:30px}.faq{border-bottom:1px solid var(--line);background:#fff}.faq summary{padding:18px 22px;cursor:pointer;color:var(--title);font-weight:700;line-height:1.55}.faq p{padding:0 22px 19px;margin:0;font-size:15px}.service-layout{display:grid;grid-template-columns:minmax(210px,.7fr) minmax(0,2fr);gap:38px;align-items:start}.service-aside{background:var(--aqua);padding:20px;border-radius:12px;position:sticky;top:18px}.service-main{min-width:0}.callout{background:var(--aqua);border-left:4px solid var(--teal);padding:18px 22px}.related{margin:56px 0 12px;padding-top:24px;border-top:1px solid var(--line)}.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.related-links a{background:#fff;border:1px solid var(--line);padding:18px;border-radius:10px;text-decoration:none;color:var(--title);font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:10px}.related-links a:hover{border-color:var(--teal)}.site-footer{background:var(--foot);color:#DCECF5;padding:45px 0 20px}.footer-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:60px}.footer-about{max-width:520px}.footer-about p{font-size:14px;color:#DCECF5}.footer-brand{display:flex;align-items:center;gap:16px;margin-bottom:14px}.footer-brand strong{color:white}.site-footer .media-frame--logo{background:transparent}.footer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.footer-nav a{color:#DCECF5;font-size:14px;padding:9px 0;text-decoration:none}.footer-nav a.is-active{font-weight:700;text-decoration:underline;text-decoration-color:var(--teal)}.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:34px;padding-top:18px;border-top:1px solid #365065;font-size:12px;color:#c0d7e4}
@media(max-width:1100px){.brand-note{font-size:12px}.container{width:min(100% - 44px,1200px)}.nav-inner a{font-size:13px;padding-inline:4px}.cover{gap:25px}.section{margin-block:48px}}
@media(max-width:920px){.brand-inner{height:62px;display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:12px}.brand{justify-self:center;max-width:100%}.brand-note,.primary-nav{display:none}.menu-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;width:40px;height:40px;background:transparent;border:1px solid var(--line);border-radius:10px}.menu-toggle span{width:19px;height:2px;background:var(--nav)}.register-link{height:40px;min-height:40px;padding:0 12px;font-size:13px}.media-frame--logo img{max-height:30px;max-width:185px}.drawer-overlay{display:block;position:fixed;inset:0;background:rgba(8,25,40,.5);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(86vw,340px);max-width:100%;overflow-y:auto;background:#fff;z-index:100;transform:translateX(-105%);visibility:hidden;transition:transform .24s,visibility .24s;padding:18px 24px 35px;box-shadow:8px 0 28px rgba(0,0,0,.15)}body.drawer-open .mobile-drawer{visibility:visible;transform:translateX(0)}body.drawer-open .drawer-overlay{visibility:visible;opacity:1;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;font-size:19px;font-weight:700;color:var(--title);padding-bottom:15px;border-bottom:1px solid var(--line)}.drawer-close{width:42px;height:42px;border:0;border-radius:10px;background:var(--soft);font-size:30px;color:var(--nav)}.drawer-group{padding-top:20px}.drawer-group p{color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.12em;margin:0 0 6px}.drawer-group a{display:block;padding:12px 10px;color:var(--title);text-decoration:none;border-radius:7px}.drawer-group a.is-active{font-weight:700;background:var(--aqua);border-left:3px solid var(--teal)}.mobile-quick{display:flex;justify-content:space-between;gap:7px;flex-wrap:wrap;padding-block:19px}.mobile-quick a{font-size:13px}noscript .nojs-nav{display:flex;gap:10px;flex-wrap:wrap;padding:12px 0}noscript .nojs-nav a{font-size:14px}.section{margin-block:42px}}
@media(max-width:760px){.split,.split--wide,.split--reverse,.cover,.editor-grid,.fact-layout,.manual-layout,.service-layout,.gallery-entry:nth-child(3){grid-template-columns:minmax(0,1fr)}.cover{padding-top:25px}.cover .media-frame{margin-top:5px}.fact-aside,.manual-aside,.service-aside{position:static}.service-main{order:0}.service-aside{order:1}.matrix,.text-triptych{grid-template-columns:1fr}.text-triptych article:nth-child(n){margin-top:0}.flow-steps,.steps-four{grid-template-columns:repeat(2,minmax(0,1fr))}.related-links{grid-template-columns:1fr}.gallery-grid{grid-template-columns:1fr}.gallery-entry:nth-child(2){margin-top:0}.gallery-entry:nth-child(3){display:block;grid-column:auto}.footer-layout{grid-template-columns:1fr;gap:18px}}
@media(max-width:640px){.container{width:calc(100% - 32px)}.brand-inner{gap:6px}.register-link{padding-inline:9px;font-size:12px}.media-frame--logo img{max-height:30px;max-width:min(42vw,172px)}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--banner{--media-limit:135px}.media-frame--mobile{--media-limit:285px;max-width:250px}.cover h1{font-size:clamp(27px,7vw,32px)}.page-heading h1{font-size:clamp(25px,6vw,29px)}h2{font-size:clamp(20px,5vw,23px)}h3{font-size:clamp(17px,4vw,19px)}p,.article p,.prose p{font-size:15px}.page-lead{font-size:15px}.section{margin-block:34px}.topic-index{grid-template-columns:1fr}.panel,.band,.editor-feature{padding:19px}.editor-minis{padding:0}.flow-steps,.steps-four{grid-template-columns:1fr}.matrix article{padding:18px}.media-missing.media-frame--hero{min-height:135px}.footer-bottom{margin-top:20px}.brand-note{display:none}}
@media(max-width:375px){.brand-inner{grid-template-columns:40px minmax(0,1fr) auto;gap:4px}.register-link{padding-inline:7px}.media-frame--logo img{max-width:39vw}.mobile-quick a{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}