body {
  font-family:
    "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans",
    Meiryo, sans-serif;
  background-color: #f9fafb;
  color: #333;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}
header {
  text-align: center;
  margin-bottom: 40px;
}
h1 {
  color: #2c3e50;
  font-size: 2rem;
  margin-bottom: 10px;
}
h2 {
  color: #3498db;
  border-bottom: 2px solid #3498db;
  padding-bottom: 5px;
  margin-top: 40px;
}
p {
  color: #555;
  margin-bottom: 20px;
}
ul {
  margin-bottom: 20px;
  color: #555;
}
li {
  margin-bottom: 10px;
}

.app-link-container {
  text-align: center;
  margin: 50px 0;
}
.app-link {
  display: inline-block;
  padding: 20px 40px;
  background-color: #3498db;
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-size: 1.5rem;
  font-weight: bold;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}
.app-link:hover {
  background-color: #2980b9;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

@media (max-width: 600px) {
  .container {
    padding: 20px 15px;
  }
  h1 {
    font-size: 1.6rem;
  }
  h2 {
    font-size: 1.3rem;
    margin-top: 30px;
  }
  .app-link {
    padding: 15px 30px;
    font-size: 1.2rem;
  }
}
/* =========================================
   プライバシーポリシー用のスタイル
   ========================================= */
.privacy-container {
  max-width: 600px;
  width: 100%;
  background-color: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  margin: 0 auto 30px auto;
  text-align: left;
  box-sizing: border-box;
}
.privacy-container h2 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-top: 25px;
  border-bottom: 2px solid #ecf0f1;
  padding-bottom: 5px;
}
.privacy-container p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #555;
}
.back-link {
  display: inline-block;
  margin-top: 20px;
  color: #3498db;
  text-decoration: none;
  font-weight: bold;
  cursor: pointer;
}
.back-link:hover {
  text-decoration: underline;
}