.selector-tarifa:checked+.tarjeta-oferta{border:3px solid #002bff;box-shadow:0 0 10px rgba(0,43,255,0.5)}.telefono-fijo{position:fixed;top:100px;right:20px;background-color:#ff001f;color:white;padding:12px 18px;border-radius:25px;text-decoration:none;font-weight:600;z-index:9999;box-shadow:0 4px 10px rgba(0,0,0,0.2)}.telefono-fijo:hover{background-color:#6f5442}