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a{grid-area:1/2/3}.site-footer{color:#526174;justify-content:space-between;gap:24px;margin-top:40px;padding-top:44px;padding-bottom:38px;font-size:.78rem;display:flex}.site-footer span:last-child{max-width:360px}.back{margin-bottom:36px;font-size:.9rem;display:inline-block}.detail{padding-top:36px}.detail h1{max-width:950px;font-size:clamp(2.3rem,4.5vw,3.8rem)}.lede{color:#526174;max-width:780px;margin:24px 0 36px;font-size:1.2rem}.video{aspect-ratio:16/9;background:#162230;border-radius:6px;position:relative;overflow:hidden}.video-start{background:0 0;border:0;width:100%;height:100%;padding:0;position:relative}.video-start img{object-fit:cover;width:100%;height:100%}.video .play{width:72px;height:72px;font-size:24px}.play-label{color:#fff;background:#162230e8;border-radius:4px;padding:4px 14px;position:absolute;bottom:20px;left:50%;transform:translate(-50%)}.video iframe{border:0;width:100%;height:100%}.video-meta{justify-content:space-between;gap:20px;margin-top:16px;font-size:.9rem;display:flex}.privacy-note{color:#526174;margin-top:10px;font-size:.75rem}.detail-body{grid-template-columns:2fr 1fr;gap:70px;padding-top:48px;padding-bottom:40px;display:grid}.detail-body h2{margin-bottom:20px;font-size:1.4rem}.description{white-space:pre-line;max-width:72ch;margin-bottom:32px}.resources{margin:0;padding:0;list-style:none}.resources li{border-top:1px solid #dce3eb;padding:16px 0}.resources span{color:#526174;margin-bottom:4px;font-size:.78rem;display:block}.chapters{margin:0 0 32px;padding:0;list-style:none}.chapters a{gap:18px;padding:8px 0;display:flex}.chapters span{font-variant-numeric:tabular-nums}summary{cursor:pointer;margin-bottom:18px;font-weight:600}.prose{max-width:900px;padding-top:50px;padding-bottom:70px}.prose h2{margin-top:36px;margin-bottom:14px;font-size:1.5rem}.prose p{max-width:70ch}.notice{background:#f5f7fa;border-radius:6px;margin-top:36px;padding:24px}.notice p{margin-top:8px}.skip{z-index:5;background:#fff;padding:12px;position:absolute;top:-100px;left:20px}.skip:focus{top:12px}:focus-visible{outline-offset:4px;outline:3px solid #145bcc}[hidden]{display:none!important}@media (width<=850px){.wrap{padding-inline:24px}.intro{padding-top:40px;padding-bottom:48px;display:block}.intro-note{max-width:440px;margin-top:28px}.demo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.featured-grid:has(>:only-child) .featured{display:block}.detail-body{gap:32px}.contribution{margin-inline:24px}.site-footer{display:block}.site-footer span{margin-bottom:10px;display:block}}@media (width<=580px){.site-header{gap:12px;padding-top:20px}.site-header nav{gap:16px}.site-header nav a{font-size:.8rem}.wordmark{gap:8px;font-size:.95rem}.mark{width:28px;height:28px;font-size:1.4rem;line-height:26px}.section-heading{display:block}.section-heading p{margin-top:10px}.search-bar{grid-template-columns:1fr;padding:18px}.demo-grid,.featured-grid{grid-template-columns:1fr}.contribution{padding:28px 24px;display:block}.contribution a{margin-top:22px}.detail-body{grid-template-columns:1fr}.video-meta{display:block}.video-meta>a{margin-top:8px;display:block}.intro h1{font-size:2.65rem}.featured h3{font-size:1.5rem}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}.brand-logo{object-fit:contain;flex-shrink:0;width:34px;height:34px}@media (width<=580px){.brand-logo{width:28px;height:28px}}