body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;margin:0;padding:0}.container{max-width:1200px;margin:0 auto;padding:0 20px}.btn{display:inline-block;padding:10px 20px;background-color:#dc2626;color:#fff;text-decoration:none;border-radius:6px;border:none;cursor:pointer;font-weight:600;transition:background-color .2s}.btn:hover{background-color:#b91c1c}.card{background:#fff;border-radius:12px;box-shadow:0 4px 6px #0000001a;padding:24px;border:1px solid #e5e7eb}