.interest-section {
  text-align: center;
  padding: 56px 20px 56px;
  padding-top: 0;
  margin: 0;
}
.interest-badge {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  border-radius: 20px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.interest-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.03em;
}
.interest-desc {
  font-size: 0.88rem;
  margin-bottom: 28px;
}
.interest-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 360px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .interest-form {
    flex-direction: row;
    max-width: 800px;
    align-items: stretch;
  }
  .interest-form input,
  .interest-form select {
    flex: 1;
  }
  .interest-form button {
    flex-shrink: 0;
    margin-top: 0;
    padding: 15px 28px;
  }
}
.interest-form input,
.interest-form select {
  padding: 14px 16px;
  border: 1px solid;
  border-radius: 8px;
  font-size: 0.97rem;
  outline: none;
  transition: border-color 0.2s;
}
.interest-form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='currentColor' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}
.interest-form button {
  padding: 15px;
  border: 1px solid;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: opacity 0.15s;
  margin-top: 2px;
}
.interest-form button:hover { opacity: 0.9; }
.interest-form button:active { opacity: 0.75; }
.interest-form button:disabled { opacity: 0.5; cursor: not-allowed; }
.interest-success {
  font-size: 1rem;
  margin-top: 20px;
  font-weight: 500;
}