:root{color:#111;background:#fff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px;line-height:1.6}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:#fff}a{color:inherit}button,textarea{font:inherit}.shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;padding:28px 20px;border-right:1px solid #111;background:#fff}.brand{display:block;margin-bottom:36px;text-decoration:none}.brand span{display:block;font-size:28px;font-weight:760;line-height:1}.brand small{display:block;margin-top:8px;color:#555;font-size:12px;letter-spacing:0}nav{display:grid;gap:4px}nav a{display:flex;align-items:center;min-height:36px;padding:6px 8px;border:1px solid transparent;text-decoration:none;font-size:14px}nav a:hover,nav a.current{border-color:#111}main{width:min(1120px,100%);padding:56px clamp(20px,5vw,72px) 80px}section{scroll-margin-top:28px;padding:44px 0;border-bottom:1px solid #ddd}.hero{min-height:520px;display:flex;flex-direction:column;justify-content:center;border-bottom-color:#111}.kicker{margin:0 0 16px;color:#555;font-size:13px;font-weight:700;letter-spacing:0;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{max-width:880px;margin-bottom:24px;font-size:clamp(48px,8vw,104px);line-height:.95;letter-spacing:0}h2{margin-bottom:24px;font-size:clamp(30px,5vw,56px);line-height:1;letter-spacing:0}h3{margin-bottom:12px;font-size:18px}.lead{max-width:760px;color:#333;font-size:20px}.actions,.toolbar{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.actions a,button{min-height:40px;padding:8px 14px;border:1px solid #111;border-radius:0;background:#111;color:#fff;text-decoration:none;cursor:pointer}.actions a+a,button+button{background:#fff;color:#111}.band{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;padding:0;border:1px solid #111}.band div{min-height:180px;padding:24px;border-right:1px solid #111}.band div:last-child{border-right:0}.metric{display:block;margin-bottom:20px;font-size:22px;font-weight:750}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}article{padding:20px;border:1px solid #111}pre,code,textarea{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}pre{overflow:auto;margin:0;padding:16px;border:1px solid #111;background:#fff;color:#111;font-size:13px}table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin-bottom:20px;font-size:15px}th,td{padding:10px 12px;border:1px solid #111;text-align:left;vertical-align:top}.playground{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}label span{display:block;margin-bottom:10px;font-size:13px;font-weight:750;text-transform:uppercase}textarea{width:100%;min-height:420px;resize:vertical;padding:16px;border:1px solid #111;border-radius:0;background:#fff;color:#111;font-size:14px;line-height:1.5}.output{min-height:360px;margin-top:16px}.links{display:grid;gap:10px;margin:0;padding:0;list-style:none}.links li{padding:14px 0;border-bottom:1px solid #ddd}@media(max-width:900px){.shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;border-right:0;border-bottom:1px solid #111}nav{grid-template-columns:repeat(2,minmax(0,1fr))}main{padding-top:32px}.hero{min-height:auto}.band,.grid,.grid.two,.playground{grid-template-columns:1fr}.band div{border-right:0;border-bottom:1px solid #111}.band div:last-child{border-bottom:0}}@media(max-width:520px){main{padding-inline:16px}h1{font-size:46px}nav{grid-template-columns:1fr}}