.rempx-card{max-width:720px;margin:20px auto;padding:18px;border-radius:14px;box-shadow:0 8px 20px rgba(0,0,0,0.08);font-family:Arial,Helvetica,sans-serif;background:#fff}
.rempx-header{background:linear-gradient(90deg,#0b74ff,#0066d6);color:#fff;padding:20px;text-align:center;border-radius:10px 10px 0 0}
.rempx-header h2{margin:0;font-size:22px;color:#fff}
.rempx-sub{font-size:13px;opacity:.9;margin-top:6px;color:#fff}
.rempx-body{padding:16px}
.rempx-body label{display:block;margin-top:10px;font-weight:600;color:#173a63}
.rempx-body input[type='number']{width:100%;padding:10px;margin-top:6px;border:1px solid #dfebfb;border-radius:10px}
.rempx-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.rempx-btn-primary{background:#0b74ff;color:#fff;padding:10px 16px;border-radius:10px;border:none;cursor:pointer}
.rempx-btn-outline{background:#fff;color:#0b74ff;border:1px solid #0b74ff;padding:10px 16px;border-radius:10px;cursor:pointer}
.rempx-output{margin-top:14px;padding:12px;border-radius:10px;border:1px solid #eef6ff;background:#f7faff;min-height:50px}
.rempx-placeholder{color:#6b7280}
@media(max-width:640px){.rempx-card{padding:12px}.rempx-actions{flex-direction:column}.rempx-actions button{width:100%}}