body {
  margin: 0;
  padding: 24px;
  background: #f8fafc;
  color: #0f172a;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.page {
  width: 80%;
  margin: 0 auto;
}

.page-header {
  margin: 0 0 20px;
  padding: 20px;
  background: #1e293b;
  color: #f8fafc;
  border-radius: 12px;
}

.page-header h1,
.page-header p {
  margin: 0 0 8px;
}

.panel {
  margin: 0 0 16px;
  padding: 20px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
}

.panel h2 {
  margin: 0 0 12px;
}

.explain {
  margin: 12px 0 0;
  color: #334155;
}

code,
kbd,
samp {
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.95em;
}

code {
  background: #e2e8f0;
  color: #0f172a;
}

kbd {
  background: #1e293b;
  border: 1px solid #0f172a;
  color: #f8fafc;
}

samp {
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  color: #065f46;
}

pre {
  margin: 12px 0 0;
  padding: 14px;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 8px;
  overflow: auto;
  white-space: pre;
}

pre code {
  padding: 0;
  background: transparent;
  color: #e2e8f0;
  font-size: 0.95rem;
  line-height: 1.45;
}