*{box-sizing:border-box}
:root{--bg:#000}
html,body{height:100%}
body{margin:0;background:var(--bg);color:#e8eef3;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Inter,Arial,sans-serif}
.center{min-height:100vh;display:grid;place-items:center;padding:4vh 4vw}
.logo{width:min(90vw,900px);height:auto;display:block}