body {
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  margin: 0;
  padding: 1em;
  background-color: #fffdf8;
  color: #333;
  line-height: 1.8;
}

.container {
  max-width: 1000px;
  margin: auto;
}

h1 {
  font-size: 1.6em;
  margin-bottom: 0.3em;
  color: #2c3e50;
}

h2 {
  font-size: 1.3em;
  margin-top: 1.5em;
  color: #4a352a;
  border-bottom: 2px solid #dbc4a0;
  padding-bottom: 0.2em;
}

h3 {
  font-size: 1.1em;
  margin-top: 1em;
  color: #4b3d35;
}

ul, ol {
  margin-left: 1.5em;
}

.breadcrumb {
  font-size: 0.9em;
  margin-bottom: 1.5em;
}

.breadcrumb a {
  color: #8c5c3b;
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

table.basic-info {
  width: 100%;
  border-collapse: collapse;
}

table.basic-info th,
table.basic-info td {
  padding: 0.5em;
  text-align: left;
}

table.basic-info th {
  background-color: #f9f5f1;
  font-weight: normal;
}

table.basic-info tr {
  border-bottom: 1px solid #ccc;
}

.ai-note {
  font-size: 0.85em;
  color: #666;
  background-color: #f8f4ee;
  padding: 0.8em;
  margin-top: 2em;
}


@media (max-width: 600px) {
  body {
    padding: 0.8em;
  }

  h1 {
    font-size: 1.4em;
  }

  h2 {
    font-size: 1.1em;
  }
}