:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --accent: #0284c7;
  --radius: 8px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.content-site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.content-logo {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}
.content-logo:hover { opacity: 0.85; }
.content-main {
  flex: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 36px 24px 48px;
  width: 100%;
}
.content-breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.content-breadcrumb a { color: var(--accent); text-decoration: none; }
.content-breadcrumb a:hover { text-decoration: underline; }
.content-main h1 {
  font-size: 32px;
  line-height: 1.2;
  margin-bottom: 16px;
  font-weight: 700;
}
.content-lead {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.content-section {
  margin-bottom: 32px;
}
.content-section h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.content-section p { margin-bottom: 12px; font-size: 15px; }
.content-section ul, .content-section ol {
  margin: 0 0 12px 20px;
  font-size: 15px;
}
.content-section li { margin-bottom: 8px; }
.content-table-wrap { overflow-x: auto; margin: 16px 0; }
.content-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.content-table th, .content-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.content-table th { background: #f1f5f9; font-weight: 600; }
.content-cta {
  background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 100%);
  border: 1px solid #bae6fd;
  border-radius: 12px;
  padding: 24px 28px;
  margin-top: 40px;
}
.content-cta h2 { font-size: 18px; margin-bottom: 8px; }
.content-cta p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
.btn-content-cta {
  display: inline-block;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius);
  text-decoration: none;
}
.btn-content-cta:hover { opacity: 0.92; }
.content-related {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.content-related h2 { font-size: 16px; margin-bottom: 10px; }
.content-related ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 16px; }
.content-related a { font-size: 14px; color: var(--accent); text-decoration: none; }
.content-related a:hover { text-decoration: underline; }