.tvf-preferred-source {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  margin: 0 auto 1.15rem;
  max-width: 420px;
  text-align: center;
}
.tvf-preferred-source__label {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: #9a9da8;
}
.tvf-preferred-source [google-add-preferred-source-btn] {
  display: flex;
  justify-content: center;
  min-height: 40px;
}
.tvf-preferred-source__fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  background: #fff;
  color: #1a73e8;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}
.tvf-preferred-source__fallback:hover { text-decoration: underline; }