:root{--bg:#F4F7FA;--white:#fff;--pale:#EAF1F6;--aqua:#E9F8F8;--nav:#102E46;--deep:#163C57;--teal:#13B8C5;--blue:#237BD3;--heading:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-wrap:break-word}img{max-width:100%}a{color:#1266a7;text-underline-offset:3px}a:hover{color:#0d465f}button{font:inherit}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:3px}.shell{max-width:1200px;margin-inline:auto;padding-inline:28px}.skip-link{position:absolute;z-index:999;top:-90px;left:10px;background:white;padding:9px}.skip-link:focus{top:10px}.site-header{background:var(--white);border-bottom:1px solid 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@media(max-width:1100px){.shell{padding-inline:22px}.nav-inner{gap:3px}.desktop-nav a{padding-inline:4px;font-size:13px}.hero h1{font-size:38px}}
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@media(max-width:640px){body{font-size:15px;line-height:1.78}.shell{padding-inline:16px}.page-section{margin-block:35px}.hero{margin-block:25px 38px}.hero h1{font-size:29px}.page-intro{padding-top:25px}h1{font-size:27px}.page-section h2,.article-body h2{font-size:22px}.page-section h3{font-size:18px}.lead{font-size:16px}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--short{--media-limit:175px}.media-frame--mobile{--media-limit:285px;max-width:250px}.media-frame--banner{--media-limit:135px}.media-frame--hero .media-placeholder{min-height:145px}.index-columns,.knowledge-steps,.topic-matrix,.gallery-grid{grid-template-columns:1fr}.gallery-piece:nth-child(2){margin-top:0}.featured-story,.soft-band,.deep-band{padding:20px}.route{gap:9px}.route-item{padding:12px}.related{margin-top:35px}.footer-bottom{display:block}.brand-bar{gap:8px}.brand-mark img{max-width:34vw}.register-link{padding:4px 8px}.flow-steps{grid-template-columns:1fr}.btn-row{gap:9px}}
@media(max-width:380px){.brand-mark img{max-width:31vw}.register-link{font-size:11px}.brand-bar{gap:5px}.brand-fallback{font-size:12px}.route{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}