body{background:#f8fafc;color:#0f172a;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif}
.card{border-radius:12px}
#preview table{border-collapse:collapse;width:100%}
#preview th,#preview td{border:1px solid #e6eef8;padding:6px;font-size:13px}