:root{font-family:system-ui,sans-serif;color:#172033;background:#fafbfc;line-height:1.7}body{margin:0}header,main{max-width:880px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid #dde3eb}a{color:#245bba;text-underline-offset:4px}.brand{font-weight:700;text-decoration:none;color:inherit}nav{display:flex;flex-wrap:wrap;gap:20px}nav [aria-current]{font-weight:700}h1{font-size:2.4rem;line-height:1.2}h2{line-height:1.4}.summary{padding:20px 0;border-bottom:1px solid #dde3eb}img{max-width:100%;height:auto;border-radius:12px}pre{overflow:auto;padding:20px;background:#eef1f5}blockquote{border-left:3px solid #94a3b8;margin-left:0;padding-left:20px}.prose{overflow-wrap:anywhere}details{padding:16px 0;border-bottom:1px solid #dde3eb}summary{cursor:pointer;font-weight:600}article nav{margin-top:30px}@media(max-width:600px){header{display:block}header nav{margin-top:16px}h1{font-size:1.8rem}}