:root {
  --bg: #f7f5f2;
  --bg-elevated: #ffffff;
  --bg-muted: #eeeae4;
  --bg-dark: #0f1219;
  --text: #0f1219;
  --text-muted: #5c6370;
  --text-inverse: #f7f5f2;
  --accent: #3d4fdb;
  --accent-hover: #2f3eb8;
  --accent-warm: #e85d4c;
  --accent-soft: rgba(61, 79, 219, 0.1);
  --border: rgba(15, 18, 25, 0.08);
  --border-strong: rgba(15, 18, 25, 0.14);
  --glass: rgba(255, 255, 255, 0.72);
  --shadow-sm: 0 2px 8px rgba(15, 18, 25, 0.06);
  --shadow: 0 8px 32px rgba(15, 18, 25, 0.08);
  --shadow-lg: 0 24px 64px rgba(15, 18, 25, 0.12);
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --font-sans: "Manrope", system-ui, sans-serif;
  --font-serif: "Source Serif 4", Georgia, serif;
  --max-width: 1240px;
  --header-h: 76px;
  --toc-width: 280px;
  --section-pad: clamp(3rem, 8vw, 5rem);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition: 0.01ms;
  }
}