:root {
  --font-sans: "SF Pro Text", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", Consolas, monospace;

  --radius: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;

  --sidebar-width: 240px;
  --feed-max: 680px;
  --header-height: 4.25rem;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 280ms;

  --shadow-soft: 0 1px 2px rgba(20, 20, 18, 0.04), 0 10px 30px rgba(20, 20, 18, 0.05);
  --shadow-lift: 0 4px 12px rgba(20, 20, 18, 0.08), 0 16px 40px rgba(20, 20, 18, 0.06);
}