/* book/examples/example.css 2026/04/09 */

html, body {
  margin: 0;
  background: #eef1f6;
  color: #202638;
  font: 16px/1.7 "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", sans-serif;
}

body {
  padding: 24px 20px 80px;
}

.page {
  max-width: 980px;
  margin: 0 auto;
}

h1 {
  margin: 0 0 12px;
  font-size: 28px;
}

h2 {
  margin: 24px 0 10px;
  padding: 10px 14px;
  background: #dfe7f4;
  border-left: 6px solid #5877b7;
  font-size: 20px;
}

p {
  margin: 10px 0;
}

.note {
  color: #51607e;
}

.canvas-block {
  margin: 18px 0 24px;
  overflow-x: auto;
}

canvas {
  display: block;
  width: 960px;
  height: 720px;
  background: #10151f;
  border: 1px solid #b9c5e0;
  box-shadow: 0 8px 24px rgba(31, 42, 68, 0.18);
}

pre {
  margin: 18px 0 0;
  padding: 16px 18px;
  overflow: auto;
  border-radius: 10px;
  background: #18202d;
  color: #e9efff;
  font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.section-card {
  margin: 18px 0;
  padding: 18px 20px;
  background: #ffffff;
  border: 1px solid #d6deee;
  border-radius: 12px;
}

a {
  color: #365d9d;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 20px 0 0;
}

.index-card {
  padding: 18px 20px;
  background: #ffffff;
  border: 1px solid #d6deee;
  border-radius: 12px;
}

.index-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.index-card ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.index-card li {
  margin: 8px 0;
}