/* Four levels, re-coloured from primary-deep so shadows carry the ink hue. Light comes from directly above.
   Shadows do not apply inside the steel band; the sole exception is --elevation-modal (the lightbox above the page). */
:root{
--elevation-flat:none;
--elevation-raised:0 1px 2px -1px rgba(8,9,45,0.10),0 2px 6px -2px rgba(8,9,45,0.08);
--elevation-overlay:0 4px 8px -3px rgba(8,9,45,0.12),0 12px 24px -6px rgba(8,9,45,0.14);
--elevation-modal:0 8px 16px -6px rgba(8,9,45,0.14),0 32px 56px -16px rgba(8,9,45,0.20)}