:root{--bg:#F4F7FA;--white:#fff;--mist:#EAF1F6;--mint:#E9F8F8;--navy:#102E46;--deep:#163C57;--teal:#13B8C5;--blue:#237BD3;--heading:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539;--gutter:28px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;min-width:0;overflow-x:clip;background:var(--bg);color:var(--text);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}button,input{font:inherit}a{color:#176bb6;text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#0c526f}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #13B8C5;outline-offset:3px}h1,h2,h3{color:var(--heading);line-height:1.4;letter-spacing:-.018em}h1{font-size:clamp(32px,3.1vw,36px);line-height:1.34;margin:0 0 20px}h2{font-size:clamp(24px,2.3vw,28px);margin:0 0 18px}h3{font-size:20px;margin:0 0 10px}p{margin:0 0 18px}ul,ol{padding-left:1.5em}li{margin:5px 0}.container{max-width:1200px;padding:0 var(--gutter);margin:0 auto;min-width:0}.section{margin:62px auto}.section-tight{margin:42px auto}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:#087a87;margin-bottom:13px}.muted{color:var(--muted)}.site-header{position:relative;z-index:20}.brand-bar{background:white;border-bottom:1px solid var(--line)}.brand-inner{height:72px;display:flex;align-items:center;gap:21px}.brand-link{display:flex;align-items:center;min-width:0;text-decoration:none;color:var(--heading)}.brand-link img{display:block;width:auto;height:auto;max-height:38px;max-width:245px;object-fit:contain}.brand-fallback{font-size:23px;font-weight:900;white-space:nowrap;line-height:1.1}.brand-fallback small{display:block;font-size:9px;letter-spacing:.13em}.brand-strap{font-size:13px;color:var(--muted);border-left:1px solid 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@media(max-width:760px){.home-cover,.split-section,.split-section.reverse,.focus-grid,.two-column,.chapter-pair,.gallery-intro,.exhibit-grid,.about-layout,.mobile-reading{grid-template-columns:minmax(0,1fr)}.home-cover{padding:32px 0 12px}.split-section.reverse .media-frame{order:0}.split-section.reverse>div{order:1}.focus-side{grid-template-columns:1fr 1fr}.index-grid{column-gap:22px}.paper-band{padding:25px}.lesson-grid{grid-template-columns:1fr 1fr}.lesson-grid .simple-note:nth-child(n){margin:0}.reading-route{grid-template-columns:1fr 1fr}.side-facts{margin-top:0}.chapter-pair article+article{border-left:0;padding-left:0}.exhibit:nth-child(2){margin-top:0}.about-content{order:0}.service-nav{order:1}.project-matrix{grid-template-columns:1fr}.project-matrix article{border-right:0;border-bottom:1px solid var(--line)}.project-matrix article:last-child{border-bottom:0}.mobile-reading .media-frame{max-width:245px}.mobile-quick{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:35px}.mobile-quick a{font-size:13px}.footer-grid{gap:25px}}
@media(max-width:640px){:root{--gutter:16px}body{font-size:15px}h1{font-size:27px}h2{font-size:22px}h3{font-size:18px}.home-cover h1{font-size:30px}.page-top{padding:25px 0 5px}.page-top .lead{font-size:15px}.section{margin:39px auto}.section-tight{margin:30px auto}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--wide{--media-limit:135px}.media-frame--mobile{--media-limit:285px;max-width:250px}.media-frame--article{--media-limit:175px}.index-grid,.focus-side,.lesson-grid,.reading-route,.footer-grid{grid-template-columns:1fr}.index-item{padding:17px 0}.focus-side{gap:12px}.feature-article,.dark-band{padding:23px}.paper-band{padding:20px}.lesson-grid{gap:12px}.related{padding:20px}.related-links{display:grid}.site-footer{margin-top:42px}.footer-links{grid-template-columns:1fr 1fr}.brand-link img{max-width:min(100%,145px)}.brand-fallback{font-size:15px}.entry-link{padding:0 8px}.local-nav a{font-size:12px}.article-figure{margin:16px auto 25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}