:root {
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-card: 20px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-soft: 0 6px 24px  color-mix(in srgb, var(--ink) 5%,  transparent),
                 0 1px 3px   color-mix(in srgb, var(--ink) 4%,  transparent);
  --shadow-card: 0 10px 34px color-mix(in srgb, var(--ink) 7%,  transparent),
                 0 2px 6px   color-mix(in srgb, var(--ink) 4%,  transparent);
  --shadow-lift: 0 18px 48px color-mix(in srgb, var(--ink) 11%, transparent),
                 0 4px 10px  color-mix(in srgb, var(--ink) 5%,  transparent);
  --border-brand-width: 2px;
  --duration-fast: 200ms;
  --duration-base: 300ms;
  --duration-slow: 400ms;
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --hover-rise: translateY(-3px);
}
@keyframes ds-fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ds-drift {
  from { transform: translateY(0); }
  to   { transform: translateY(-24px); }
}