@charset "UTF-8";

* {
  box-sizing: border-box;
}

body {
  background: #f0f4f8;
  margin: 0;
  padding: 0;
  font-family: 'メイリオ', sans-serif;
  color: #333;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
}

h1 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #333;
  border-left: 5px solid #228b22;
  padding-left: 15px;
}

p {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 20px;
}

span.highlight {
  background-color: #e0f7fa;
  padding: 5px;
  border-radius: 3px;
}

button {
  padding: 10px 20px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

.nav-menu {
  list-style-type: none;
  padding: 0;
}

.nav-menu li {
  display: inline-block;
  margin-right: 20px;
}

.nav-menu a {
  text-decoration: none;
  color: #007bff;
}

.nav-menu a:hover {
  text-decoration: underline;
}

/* Button styling for nav menu */
.nav-menu button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
  }
  
  .nav-menu button:hover {
    background-color: #0056b3;
  }
  
  /* Submenu link styling */
  .nav-menu li ul a {
    display: block;
    padding: 8px 12px;
    color: #007bff;
    text-decoration: none;
    width: 100%; /* Make sure links fill the submenu width */
    box-sizing: border-box;
  }
  
  .nav-menu li ul a:hover {
    background-color: #e0f7fa;
    text-decoration: underline;
  }
  
  /* Adjust submenu container */
  .nav-menu li ul {
    background-color: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 10px;
    width: auto; /* Allow the width to adjust based on content */
    min-width: 200px; /* Ensure it has a minimum width */
  }
  

.fbutton {
  text-align: center;
  margin-top: 20px;
}

footer {
  text-align: center;
  margin-top: 50px;
  font-size: 14px;
  color: #666;
}
      /* Accordion styling */
      .accordion {
        background-color: #007bff;
        color: white;
        cursor: pointer;
        padding: 14px;
        width: 100%;
        border: none;
        text-align: left;
        outline: none;
        font-size: 16px;
        transition: background-color 0.3s ease;
        border-radius: 5px;
        margin-bottom: 5px;
      }

      .accordion.active, .accordion:hover {
        background-color: #0056b3;
      }

      .accordion-content {
        padding: 0 18px;
        display: none;
        overflow: hidden;
        background-color: #f0f4f8;
        margin-top: 5px;
        border-left: 5px solid #228b22;
      }

      .accordion-content a {
        display: block;
        padding: 8px 0;
        color: #007bff;
        text-decoration: none;
      }

      .accordion-content a:hover {
        text-decoration: underline;
      }