body {
  font-family: sans-serif;
  line-height: 1.8;
  padding: 16px;
  max-width: 480px;
  margin: 0 auto;
}

h1 {
  font-size: 1.2rem;
}

#progress {
  font-weight: bold;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  margin-bottom: 8px;
  border: 1px solid #ccc;
  border-radius: 8px;
}

/* 獲得済みのスポットだけ、見た目を変える */
li.visited {
  border-color: #c9302c;
  background: #fff5f5;
  color: #c9302c;
  font-weight: bold;
}

button {
  padding: 6px 12px;
  cursor: pointer;
}