<div class="radikalwp-fm-seg"><input type="radio" name="radikalwp-seg" id="rs1" /><label for="rs1">ماهانه<//label><input type="radio" name="radikalwp-seg" id="rs2" checked /><label for="rs2">سالانه<//label><input type="radio" name="radikalwp-seg" id="rs3" /><label for="rs3">مادام‌العمر<//label><//div>

.radikalwp-fm-seg {
  display: inline-flex;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 4px;
  gap: 2px;
}
.radikalwp-fm-seg input { display: none; }
.radikalwp-fm-seg label {
  padding: 8px 18px;
  font-size: 12.5px;
  font-weight: 700;
  color: #64748b;
  border-radius: 9px;
  cursor: pointer;
  transition: all .22s ease;
}
.radikalwp-fm-seg label:hover { color: #0f172a; }
.radikalwp-fm-seg input:checked + label {
  background: #fff;
  color: #4f46e5;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .1);
}