:root{--bg:#F4F7FA;--paper:#fff;--ice:#EAF1F6;--mint:#E9F8F8;--nav:#102E46;--deep:#163C57;--teal:#13B8C5;--blue:#237BD3;--title:#18364B;--body:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539;--radius:14px;--wrap:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--body);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-x:clip}img{max-width:100%}a{color:inherit;text-decoration:none}a:hover{color:#087c92}button{font:inherit;cursor:pointer}button,a,summary{ -webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #237BD3;outline-offset:3px}.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:28px;min-width:0}.skip-link{position:absolute;top:-60px;left:10px;z-index:200;background:#fff;padding:6px 14px}.skip-link:focus{top:8px}h1,h2,h3,h4{color:var(--title);line-height:1.38;margin:0 0 .65em;font-weight:750;letter-spacing:-.025em}h1{font-size:clamp(32px,3vw,42px)}h2{font-size:clamp(23px,2.2vw,28px)}h3{font-size:20px}p{margin:0 0 1.1em}p:last-child{margin-bottom:0}ul,ol{padding-left:1.4em}li{margin:.35em 0}.site-header{background:var(--nav);color:#ecf8ff}.brand-bar{background:var(--nav)}.brand-inner{height:72px;display:flex;align-items:center;gap:25px}.site-brand{display:flex;align-items:center;flex-shrink:0;color:#fff}.site-brand img{display:block;width:auto;height:auto;max-height:38px;max-width:230px;object-fit:contain}.brand-fallback{font-size:25px;color:#fff;font-weight:800;letter-spacing:.1em;line-height:1.05}.brand-fallback small{display:block;font-size:10px;letter-spacing:.26em;font-weight:500}.brand-note{margin-right:auto;font-size:13px;color:#c5dce9;white-space:nowrap}.brand-note i{font-style:normal;color:#5f8da6;margin:0 8px}.entry-link{border:1px solid #50c1ca;border-radius:9px;background:var(--teal);color:#082b38;font-size:14px;font-weight:750;padding:9px 21px;white-space:nowrap}.entry-link:hover{background:#7ee0e3;color:#0a2d3c}.desktop-nav{background:#143b55;border-top:1px solid #315168}.nav-inner{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));align-items:stretch}.nav-inner a{text-align:center;color:#e4eef4;font-size:15px;padding:12px 4px 13px;position:relative;white-space:nowrap}.nav-inner a:hover,.nav-inner a.is-active{color:#fff;background:#1a4662}.nav-inner a.is-active{font-weight:750}.nav-inner a.is-active:after{content:"";position:absolute;bottom:0;left:27%;right:27%;height:3px;background:var(--teal)}.menu-toggle{display:none}.mobile-drawer,.drawer-backdrop,.noscript-nav,.mobile-quick{display:none}.section-space{margin-block:60px}.section-heading{margin-bottom:26px}.eyebrow{display:inline-block;font-weight:750;font-size:12px;letter-spacing:.16em;color:#007c8b;text-transform:uppercase;margin-bottom:12px}.section-heading p{max-width:740px}.hero{padding-top:54px}.hero-grid{display:grid;grid-template-columns:minmax(0,52fr) minmax(0,48fr);gap:42px;align-items:center}.hero-copy{padding:16px 0}.hero h1{max-width:670px}.hero p{font-size:17px;max-width:610px}.hero .lead{color:#24435a;font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button-primary,.button-outline{display:inline-flex;align-items:center;justify-content:center;border-radius:8px;padding:11px 20px;font-weight:700;font-size:15px;line-height:1.5}.button-primary{background:var(--deep);color:white}.button-primary:hover{background:#22597b;color:#fff}.button-outline{color:var(--deep);border:1px solid #9bb6c8}.button-outline:hover{background:#e8f7f7}.media-frame{display:flex;align-items:center;justify-content:center;background:var(--ice);padding:10px;border-radius:var(--radius);min-width:0;width:100%;border:1px solid #e0eaf0;overflow:hidden}.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:auto}.media-frame--logo{--media-limit:38px}.media-placeholder{display:flex;min-height:clamp(100px,14vw,185px);width:100%;flex-direction:column;justify-content:center;align-items:center;text-align:center;color:#466678;background:repeating-linear-gradient(-45deg,#e7eff4 0,#e7eff4 12px,#eaf3f7 12px,#eaf3f7 24px);border:1px dashed #c2d4df;border-radius:8px;padding:20px;gap:4px}.media-placeholder span{font-weight:750;font-size:19px}.media-placeholder small{font-size:12px}.topic-section{background:#fff;padding:50px 0;border-block:1px solid var(--line)}.topic-list{display:grid;grid-template-columns:1fr 1fr;gap:0 52px}.topic-item{display:grid;grid-template-columns:40px minmax(0,1fr);gap:15px;padding:20px 0;border-top:1px solid var(--line)}.topic-item:nth-child(-n+2){border-top:2px solid var(--deep)}.topic-number{color:#059eaa;font-weight:800;letter-spacing:.08em}.topic-item h3{font-size:19px;margin-bottom:6px}.topic-item p{color:var(--muted);font-size:15px;line-height:1.7;margin-bottom:6px}.text-link{color:#076d89;font-weight:750;font-size:14px}.text-link:hover{text-decoration:underline}.feature-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:22px}.feature-main{background:var(--deep);color:#e9f1f5;padding:38px;border-radius:var(--radius)}.feature-main h3{color:white;font-size:27px}.feature-main .eyebrow{color:#87e8eb}.feature-main p{line-height:1.85}.feature-main .text-link{color:#98f0f0}.feature-side{display:flex;flex-direction:column;gap:20px}.short-story{background:white;padding:24px;border:1px solid var(--line);border-radius:12px;flex:1}.short-story h3{font-size:20px}.short-story p{font-size:15px}.split-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:44px;align-items:center}.split-section.reverse{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}.split-section.reverse .split-copy{order:-1}.section-tint{background:var(--mint);padding-block:54px}.three-notes{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px;align-items:start}.note{background:white;border:1px solid var(--line);padding:25px;border-radius:12px}.note:nth-child(2){margin-top:28px}.note:nth-child(3){margin-top:52px}.note h3{font-size:19px}.reading-route{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:route}.route-step{padding:14px 22px 14px 0;border-top:2px solid #acc6d2;position:relative}.route-step:before{counter-increment:route;content:'0' counter(route);display:block;color:#079ba5;font-weight:800;margin-bottom:9px}.route-step h3{font-size:18px}.editorial-note{border-left:4px solid var(--teal);background:#eaf3f7;padding:23px 27px;border-radius:0 10px 10px 0}.page-intro{padding-top:35px;padding-bottom:32px}.page-intro h1{font-size:clamp(28px,3vw,36px)}.page-intro .intro-text{max-width:840px;font-size:17px;color:#496475}.breadcrumbs{font-size:13px;display:flex;gap:11px;color:#6f8290;margin-bottom:22px}.breadcrumbs a{text-decoration:underline;text-underline-offset:3px}.anchor-nav{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.anchor-nav a{border:1px solid #b9cfdb;border-radius:100px;padding:6px 16px;color:#1a5269;background:white;font-size:14px;font-weight:650}.anchor-nav a:hover{border-color:var(--teal);background:var(--mint)}.article-layout{display:grid;grid-template-columns:minmax(0,2.35fr) minmax(220px,.8fr);gap:50px;align-items:start}.reading-column{max-width:800px;min-width:0}.reading-column.wide{max-width:1000px}.reading-column h2,.article-section h2{margin-top:0}.article-section{padding:32px 0;border-top:1px solid var(--line)}.article-section:first-child{border-top:0;padding-top:0}.article-section p{line-height:1.83}.article-section h3{margin-top:23px}.article-section ul li,.article-section ol li{margin:.6em 0}.aside-panel{background:#eaf1f6;border-radius:12px;padding:24px;position:sticky;top:25px;font-size:14px}.aside-panel h3{font-size:17px}.aside-panel a{display:block;padding:8px 0;border-bottom:1px solid #d4e2e9;color:#1b6075}.aside-panel a:last-child{border-bottom:0}.fact-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.fact-strip>div{padding:20px;background:#e9f8f8;border-radius:12px}.fact-strip strong{display:block;font-size:16px;color:#13516a;margin-bottom:5px}.fact-strip p{font-size:14px}.table-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:white;margin:20px 0 30px}.data-table{width:100%;border-collapse:collapse;min-width:610px;text-align:left;font-size:15px;line-height:1.65}.data-table caption{text-align:left;font-weight:750;color:var(--title);padding:16px 20px;background:#eaf1f6}.data-table th,.data-table td{padding:15px 18px;border-top:1px solid var(--line);vertical-align:top}.data-table thead th{background:#f0f6f8;color:var(--title)}.data-table tbody th{color:#20475b;width:22%}.timeline{counter-reset:step;display:grid;gap:12px;margin:20px 0}.timeline-item{display:grid;grid-template-columns:52px minmax(0,1fr);gap:12px;padding:20px;background:#fff;border-left:3px solid #59bdc4;border-radius:0 10px 10px 0}.timeline-item:before{counter-increment:step;content:'0' counter(step);color:#168aa0;font-weight:800;font-size:22px}.timeline-item h3{font-size:18px;margin-bottom:5px}.timeline-item p{font-size:15px}.callout{padding:20px 23px;background:#e9f8f8;border-left:4px solid var(--teal);border-radius:0 10px 10px 0;margin:24px 0}.callout strong{color:var(--title)}.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.mini-grid>div{background:#fff;border:1px solid var(--line);padding:23px;border-radius:12px}.mini-grid h3{font-size:19px}.project-matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.matrix-card{border:1px solid var(--line);border-top:4px solid var(--teal);background:white;padding:23px;border-radius:0 0 12px 12px}.matrix-card h3{margin-bottom:8px}.matrix-card p{font-size:15px}.gallery-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}.gallery-grid:nth-of-type(even){grid-template-columns:.9fr 1.1fr}.gallery-grid:nth-of-type(even) .gallery-copy{order:-1}.gallery-copy .eyebrow{margin-bottom:6px}.gallery-copy h3{font-size:23px}.gallery-copy p{font-size:16px}.article-band{background:white;padding:48px 0;border-block:1px solid var(--line)}.faq-list{display:grid;gap:10px;margin:22px 0}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 18px}.faq-list summary{font-weight:700;color:var(--title);padding:15px 6px;cursor:pointer;line-height:1.55}.faq-list details p{padding:0 6px 17px;margin:0;font-size:15px}.service-layout{display:grid;grid-template-columns:minmax(0,260px) minmax(0,1fr);gap:48px}.service-nav{align-self:start;position:sticky;top:18px;background:var(--ice);border-radius:12px;padding:24px}.service-nav h2{font-size:18px}.service-nav a{display:block;padding:8px 0;border-bottom:1px solid #cfdce4;font-size:14px;color:#1a5d75}.service-nav a:last-child{border:0}.related{margin-top:60px}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.related-item{border-top:3px solid #45b7bf;background:white;display:grid;grid-template-columns:1fr auto;gap:3px 12px;padding:23px;border-radius:0 0 10px 10px}.related-item strong{color:var(--title)}.related-item span{font-size:14px;color:var(--muted)}.related-item b{grid-column:2;grid-row:1/3;color:#138f9f}.site-footer{background:var(--footer);color:#dcecf5;margin-top:68px}.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:58px;padding-block:46px}.footer-brand{font-size:25px;color:white;font-weight:800}.footer-brand span{display:block;font-weight:500;font-size:11px;letter-spacing:.18em}.footer-intro p{color:#b2ccda;font-size:14px;max-width:530px;margin-top:12px}.footer-list{display:flex;flex-direction:column;align-items:start;gap:9px;font-size:14px}.footer-list strong{color:white;margin-bottom:5px}.footer-list a{color:#cce0eb}.footer-list a:hover{color:#72e3e6}.footer-bottom{border-top:1px solid #29465b;display:flex;justify-content:space-between;gap:16px;padding-block:18px;color:#aac3d0;font-size:12px}.back-to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;border:0;background:#173b53;color:white;z-index:20;box-shadow:0 4px 18px #102e4630}.back-to-top[hidden]{display:none}.plain-list{list-style:none;padding:0}.plain-list li{border-bottom:1px solid var(--line);padding:12px 0}.inline-stat{color:#087e8d;font-size:13px;font-weight:750;letter-spacing:.1em}
@media(max-width:1100px){.wrap{padding-inline:22px}.brand-note{font-size:12px}.hero-grid{gap:26px}.split-section{gap:28px}.article-layout{gap:30px}}
@media(max-width:920px){.wrap{padding-inline:22px}.brand-inner{height:62px;display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:12px}.brand-note,.desktop-nav{display:none}.site-brand{justify-content:center;min-width:0}.site-brand img{max-height:30px;max-width:170px}.brand-fallback{font-size:19px}.brand-fallback small{font-size:8px}.entry-link{font-size:13px;padding:8px 11px;white-space:nowrap}.entry-link span{display:none}.menu-toggle{display:flex;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:transparent;border:1px solid #628398;border-radius:7px}.menu-toggle span{height:2px;width:18px;background:#eaf3fa}.drawer-backdrop{display:block;position:fixed;inset:0;background:#071b2a99;z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.mobile-drawer{display:flex;flex-direction:column;position:fixed;z-index:91;inset:0 auto 0 0;width:min(86vw,340px);background:#fff;transform:translateX(-102%);visibility:hidden;transition:transform .22s,visibility .22s;box-shadow:12px 0 30px #03162225;overflow-y:auto;overscroll-behavior:contain}.drawer-open{overflow:hidden}.drawer-open .drawer-backdrop{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .mobile-drawer{transform:translateX(0);visibility:visible}.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid var(--line);color:var(--title)}.drawer-close{font-size:28px;line-height:1;width:40px;height:40px;border:0;background:var(--ice);border-radius:8px}.mobile-drawer nav{padding:12px 20px 28px}.mobile-drawer nav a{display:block;padding:11px 12px;color:var(--title);font-size:16px;border-radius:8px}.mobile-drawer nav a:hover{background:var(--mint)}.drawer-label{font-weight:800;font-size:12px;letter-spacing:.14em;color:#648196;margin:17px 12px 4px}.noscript-nav{display:block;background:#e9f8f8}.noscript-nav .wrap{display:flex;gap:12px;flex-wrap:wrap;padding-block:10px}.noscript-nav a{padding:3px 5px;font-size:13px}.mobile-quick{display:flex;justify-content:space-between;gap:10px;margin-top:32px;font-size:13px;color:#1c5a73}.mobile-quick a{padding:5px 0}.hero{padding-top:40px}.article-layout{grid-template-columns:minmax(0,1fr) 220px}.topic-list{column-gap:25px}}
@media(max-width:760px){.hero-grid,.split-section,.split-section.reverse,.feature-grid,.gallery-grid,.gallery-grid:nth-of-type(even){grid-template-columns:1fr}.split-section.reverse .split-copy,.gallery-grid:nth-of-type(even) .gallery-copy{order:0}.hero-copy{padding:0}.hero-grid>.media-frame{max-width:700px}.feature-side{display:grid;grid-template-columns:1fr 1fr}.article-layout,.service-layout{grid-template-columns:1fr}.aside-panel,.service-nav{position:static}.service-layout>.service-nav{order:2}.service-layout>.service-content{order:1}.reading-column{max-width:none}.project-matrix{grid-template-columns:1fr 1fr}.reading-route,.related-grid{grid-template-columns:1fr 1fr}.three-notes{grid-template-columns:1fr}.note:nth-child(2),.note:nth-child(3){margin-top:0}.footer-inner{gap:25px}.section-space{margin-block:42px}}
@media(max-width:640px){body{font-size:15px;line-height:1.78}.wrap{padding-inline:16px}.brand-inner{gap:7px;grid-template-columns:40px minmax(0,1fr) 78px}.brand-inner .entry-link{font-size:12px;text-align:center;padding:8px 6px}.site-brand img{max-height:28px;max-width:142px}.hero{padding-top:27px}.hero h1{font-size:clamp(27px,7.2vw,32px)}.hero .lead,.hero p{font-size:15px}.page-intro h1{font-size:clamp(25px,6.6vw,29px)}.page-intro .intro-text{font-size:15px}.section-heading h2,.article-section h2{font-size:22px}.section-space{margin-block:36px}.topic-section,.article-band{padding-block:36px}.topic-list,.mini-grid,.project-matrix,.feature-side,.reading-route,.related-grid,.fact-strip{grid-template-columns:1fr}.topic-item:nth-child(2){border-top:1px solid var(--line)}.topic-item{padding:18px 0}.feature-main{padding:26px}.feature-main h3{font-size:23px}.split-section,.gallery-grid{gap:22px}.section-tint{padding-block:36px}.note{padding:20px}.route-step{padding:12px 5px}.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}.article-section{padding-block:26px}.footer-inner{grid-template-columns:1fr 1fr;gap:26px;padding-block:36px}.footer-intro{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:2px}.site-footer{margin-top:42px}.table-scroll{margin-inline:0}.data-table{font-size:14px}.data-table th,.data-table td{padding:12px}.related-item{padding:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
