/* === 共通（ベース） === */
body {
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 32px 16px;
  text-align: center;
}

h1 {
  font-size: 24px;
  line-height: 1.4;
  margin-bottom: 24px;
}

h1 .break {
  display: block;
}

p {
  font-size: 16px;
  margin-bottom: 32px;
  color: #555;
}

.form-section {
  margin-bottom: 40px;
}

.form-section h2 {
  font-size: 20px;
  margin-bottom: 16px;
  color: #333;
}

.button-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  background-color: #4CAF50;
  color: white;
  font-size: 16px;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  flex: 1 1 45%;
  max-width: 200px;
  box-sizing: border-box;
}

.btn.secondary {
  background-color: #888;
}

.btn:hover {
  opacity: 0.9;
}

/* === スマホ専用の拡大表示 === */
@media screen and (max-width: 600px) {
  h1 {
    font-size: 6vw;
  }

  p {
    font-size: 4.5vw;
  }

  .form-section h2 {
    font-size: 5vw;
  }

  .btn {
    font-size: 4.5vw;
    padding: 16px;
    max-width: none;
  }
}