body {
  background-color: #f0f2f5;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #333;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
h1 {
  margin-bottom: 1rem;
  font-size: 2rem;
  color: #1a73e8;
  text-align: center;
}
section {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #e0e0e0;
}
section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
h2 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
  color: #1a1a1a;
}
p {
  line-height: 1.6;
}
code, pre {
  display: block;
  background: #f7f9fc;
  padding: 1rem;
  border-radius: 4px;
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  font-size: 0.95rem;
  overflow-x: auto;
  line-height: 1.4;
}
pre {
  margin: 0;
}
a {
  color: #1a73e8;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
@media (max-width: 600px) {
  .container {
    margin: 1rem;
    padding: 1rem;
  }
  h1 {
    font-size: 1.5rem;
  }
  h2 {
    font-size: 1rem;
  }
}
pre[class*="language-"], code[class*="language-"] {
  background: #2d2d2d !important;
  color: #f8f8f2 !important;
  border: none !important;
  border-radius: 0 !important;
}
.toolbar .toolbar-item button {
  background: #444;
  color: #f8f8f2;
  border: none;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
}
.toolbar .toolbar-item button:hover {
  background: #555;
}
pre[class*="language-"] [class*="token"],
code[class*="language-"] [class*="token"] {
  text-shadow: none !important;
}
pre[class*="language-"] .toolbar,
pre[class*="language-"] .toolbar .toolbar-item,
pre[class*="language-"] .toolbar .toolbar-item button {
  opacity: 1 !important;
  visibility: visible !important;
}