:root{color:#172033;font-synthesis:none;text-rendering:optimizelegibility;background:#f4f6f9;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,input,select,textarea{font:inherit}.app-shell{place-items:center;min-height:100vh;padding:24px;display:grid}.card{background:#fff;border:1px solid #dce1e8;border-radius:16px;width:min(100%,680px);padding:32px;box-shadow:0 16px 48px #17203314}h1{margin:0;font-size:clamp(28px,5vw,42px);line-height:1.1}