:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#17212f;background-color:#f3f5f8}*{box-sizing:border-box}body{margin:0}.layout{min-height:100vh}main{padding:1.5rem}.panel,.centered-card{background:#fff;border:1px solid #e6e9ee;border-radius:8px;padding:1.25rem}.centered-card{max-width:420px;margin:10vh auto 0}