*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:#333;background-color:#f8fafc}html,body{height:100%}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.btn{display:inline-block;padding:.5rem 1rem;background-color:#3b82f6;color:#fff;text-decoration:none;border-radius:4px;border:none;cursor:pointer;transition:background-color .2s ease}.btn:hover{background-color:#2563eb}.card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px #0000001a;border:1px solid #e2e8f0}