Radio customizado

Grupo de opções com aparência consistente e foco visível.

formulario
radio
acessibilidade

<fieldset class="radios">
  <legend>Plano</legend>
  <label><input type="radio" name="plano" checked /> Free</label>
  <label><input type="radio" name="plano" /> Pro</label>
</fieldset>

<style>
.radios {
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 0.85rem 1rem;
}
.radios label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.4rem 0;
  cursor: pointer;
}
.radios input {
  appearance: none;
  width: 1.1rem;
  height: 1.1rem;
  border: 2px solid #64748b;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0;
}
.radios input::after {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #2563eb;
  transform: scale(0);
  transition: transform 0.12s ease;
}
.radios input:checked {
  border-color: #2563eb;
}
.radios input:checked::after {
  transform: scale(1);
}
.radios input:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}
</style>

Use fieldset + legend para agrupar. Par com checkbox custom.