@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP&display=swap');

/* 閉じるボタン（右上に固定） */
.close-button {
    position: fixed;
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    background-image: url('../logo/favicon.png');
    background-size: cover;
    cursor: pointer;
    z-index: 10;
}


body {
  font-family: 'Noto Serif JP', serif;
  margin: 0;
  padding: 20px;
  line-height: 1.8;
  background-color: #fffaf5;
  color: #333;
}

h1 {
  color: #a0522d;
  border-bottom: 3px solid #f4a460;
  padding-bottom: 10px;
  text-align: center;
  font-size: 30px;
}

.content {
  max-width: 800px;
  margin: auto;
}

.section {
  margin-bottom: 20px;
}

.highlight {
  font-weight: bold;
  color: #d2691e;
}

ul {
  list-style-type: disc;
  margin-left: 20px;
}

.footer {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9em;
  color: #777;
}