body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #1f6fff, #020617 60%);
  color: #e5efff;
}
a { color: #7fb5ff; text-decoration: none; }
a:hover { text-decoration: underline; }
header.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background: rgba(3, 7, 18, 0.85);
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  z-index: 10;
}
.nav-left { display: flex; align-items: center; gap: 12px; }
.logo { width: 36px; height: 36px; border-radius: 12px; }
.nav-links a { margin-left: 20px; font-size: 14px; opacity: 0.9; }
.nav-links .nav-cta {
  padding: 6px 14px;
  border-radius: 999px;
  background: #2563eb;
  color: white;
  font-weight: 600;
}
.main-card {
  max-width: 980px;
  margin: 48px auto;
  padding: 32px 32px 40px;
  background: rgba(15, 23, 42, 0.92);
  border-radius: 24px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.9);
}
.main-card h1 {
  font-size: 40px;
  line-height: 1.1;
  margin-bottom: 16px;
}
.highlight { color: #38bdf8; }
.btn {
  display: inline-block;
  margin-top: 20px;
  margin-right: 12px;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
}
.btn-primary {
  background: #2563eb;
  color: white;
}
.btn-ghost {
  border: 1px solid rgba(148, 163, 184, 0.7);
  color: #e5efff;
}
.section {
  max-width: 900px;
  margin: 48px auto;
  padding: 32px;
  background: rgba(15, 23, 42, 0.92);
  border-radius: 24px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.9);
}
footer {
  text-align: center;
  padding: 32px 16px 40px;
  font-size: 12px;
  color: #9ca3af;
}
ul { line-height: 1.7; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: rgba(15,23,42,0.9);
  padding: 2px 4px;
  border-radius: 4px;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}
th, td {
  border-bottom: 1px solid rgba(148, 163, 184, 0.4);
  padding: 8px 4px;
  font-size: 14px;
}
th {
  text-align: left;
  opacity: 0.9;
}
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.16);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .12em;
}