body{font-family:system-ui}
.rjr{max-width:1000px;margin:40px auto;padding:20px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{border:1px solid #ddd;border-radius:12px;padding:20px}
.btn{display:inline-block;padding:12px 18px;background:#19b34c;color:#000;text-decoration:none;border-radius:8px;font-weight:bold}
@media(max-width:700px){.cards{grid-template-columns:1fr}}