:root {
  --text: #12233d;
  --bg: #f6f8ff;
  --surface: #ffffff;
  --line: #dbe3ff;
  --accent: #4d6bff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", Meiryo, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f6f8ff 0%, #eef3ff 80%, #ffffff 100%);
  line-height: 1.75;
}
.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px;
}
.header {
  background: linear-gradient(90deg, #4d6bff, #6d79ff);
  color: #fff;
  padding: 18px 0;
}
.brand {
  display: flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
  color: #fff;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: 18px;
  font-weight: 700;
}
.brand img {
  width: 32px;
  height: 32px;
}
.hero {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  margin: 24px 0;
}
section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  margin: 16px 0;
}
h1 { margin: 0 0 12px; font-size: 32px; }
h2 { margin-top: 0; color: #2e3f6b; }
ul, ol { padding-left: 20px; }
.breadcrumb {
  font-size: 14px;
  margin: 12px 0;
}
.breadcrumb a { color: #2d4fba; }
.cta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin: 12px 0;
}
.cta a {
  text-decoration: none;
  color: #102d6d;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #f5f8ff;
}
.article-meta { color: #57678d; font-size: 14px; margin-top: -8px; }
.footer {
  margin: 24px 0;
  text-align: center;
  color: #5a6591;
  font-size: 13px;
}
noscript { display: block; margin: 16px 0; }
img { max-width: 100%; border-radius: 12px; }
@media (max-width: 720px) {
  h1 { font-size: 24px; }
  .wrap { padding: 12px; }
}

.direct-answer {
  background: #f0f4ff;
  border-left: 4px solid #4d6bff;
  padding: 12px 16px;
  border-radius: 8px;
  margin: 12px 0;
  font-size: 15px;
  line-height: 1.7;
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
  margin: 16px 0;
}
.cat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  transition: transform 0.15s, box-shadow 0.15s;
}
.cat-card:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(77,107,255,0.12); }
.cat-card a { text-decoration: none; color: var(--text); }
.cat-card h2 { font-size: 16px; margin: 0; }