:root {
  color-scheme: dark;
  --bg: #05060c;
  --panel: rgba(16, 20, 34, 0.9);
  --text: #e6e8ff;
  --muted: #a7aecb;
  --accent: #40c9ff;
  --border: rgba(127, 64, 255, 0.3);
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background: radial-gradient(ellipse at 50% 15%, #1a1033 0%, var(--bg) 60%, #000 100%);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}

.document-nav,
.document-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding: 16px max(24px, calc((100vw - 840px) / 2));
  border-color: var(--border);
  background: rgba(5, 6, 12, 0.82);
}

.document-nav { border-bottom: 1px solid var(--border); }
.document-footer { border-top: 1px solid var(--border); }

.document-nav a,
.document-footer a {
  color: var(--muted);
  font-size: 0.875rem;
  text-decoration: none;
}

.document-nav a:first-child {
  margin-right: auto;
  color: var(--text);
  font-family: Orbitron, Inter, sans-serif;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.document-nav a:hover,
.document-footer a:hover { color: var(--accent); }

.document-page {
  width: min(840px, calc(100% - 32px));
  margin: 32px auto;
  padding: clamp(22px, 5vw, 52px);
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--panel);
}

.document-page h2,
.document-page h3 { scroll-margin-top: 20px; }
.document-page h3 { margin-top: 1.6em; color: #dce4ff; }
.document-page p,
.document-page li { color: var(--muted); }
.document-page strong { color: var(--text); }
.document-page a { color: var(--accent); }
.document-page ul,
.document-page ol { padding-left: 1.4rem; }

@media (max-width: 640px) {
  .document-nav a:first-child { width: 100%; margin-right: 0; }
  .document-page { margin: 18px auto; }
}