body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}.btn{display:block;padding:12px;border-radius:8px;text-decoration:none;font-weight:600;font-size:15px;transition:background .2s}.btn-primary{background-color:#007aff;color:#fff}.btn-primary:hover{background-color:#006ce4}.btn-secondary{background-color:#e5e5ea;color:#333}.btn-secondary:hover{background-color:#d1d1d6}