/* 全体 */
body {
    margin: 0;
    font-family: "Hiragino Kaku Gothic ProN", sans-serif;
    color: #333;
    line-height: 1.6;
  }
  
  /* コンテナ */
  .container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  /* ヘッダー */
  header {
    background-color: #ffffff;
    border-bottom: 1px solid #eee;
    padding: 20px 0;
  }
  
  .logo {
    font-size: 24px;
    color: #0077cc;
    font-weight: bold;
  }
  
  nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 20px;
  }
  
  nav a {
    text-decoration: none;
    color: #0077cc;
    font-weight: 500;
  }
  
  /* ヒーローセクション */
  .hero {
    background: linear-gradient(to right, #cbe9ff, #eaf6ff);
    padding: 100px 20px;
    text-align: center;
  }
  
  .hero h2 {
    font-size: 36px;
    color: #005fa3;
    margin-bottom: 10px;
  }
  
  .hero p {
    font-size: 18px;
    margin-bottom: 30px;
  }
  
  .btn {
    background-color: #0077cc;
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
  }
  
  /* 特徴セクション */
  .features {
    padding: 60px 20px;
    background-color: #f9f9f9;
  }
  
  .features h3 {
    text-align: center;
    font-size: 28px;
    color: #0077cc;
    margin-bottom: 40px;
  }
  
  .feature-list {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
  }
  
  .feature {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    flex: 1 1 30%;
    min-width: 250px;
  }
  
  /* フッター */
  footer {
    background-color: #e3f2fd;
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
  }