/* Hallmark · editorial · Studio · warm paper / ink-navy / terracotta.
   Typography and colour are shared by the calculator and information pages. */
@font-face{font-family:Instrument Serif;src:url('assets/fonts/instrument-serif-latin.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:IBM Plex Sans;src:url('assets/fonts/ibm-plex-sans-latin.woff2') format('woff2');font-weight:400 700;font-style:normal;font-display:swap}
:root{
  --color-paper:oklch(97% .012 80);
  --color-surface:oklch(99% .006 80);
  --color-paper-2:oklch(93% .015 80);
  --color-ink:oklch(26% .035 256);
  --color-muted:oklch(45% .020 256);
  --color-rule:oklch(83% .017 80);
  --color-input-rule:oklch(66% .016 80);
  --color-accent:oklch(50% .130 38);
  --color-accent-soft:oklch(94% .035 55);
  --color-focus:oklch(49% .140 256);
  --color-cream:oklch(92% .035 80);
  --color-fabric-clay:oklch(69% .100 43);
  --color-fabric-muted:oklch(75% .026 250);
  --color-error:oklch(43% .140 30);
  --color-diagram-line:oklch(59% .034 250);
  --font-display:'Instrument Serif',Georgia,serif;
  --font-body:'IBM Plex Sans',ui-sans-serif,system-ui,sans-serif;
  --space-xs:.25rem;--space-sm:.5rem;--space-md:.75rem;
  --space-lg:1rem;--space-xl:1.5rem;--space-2xl:2rem;
  --space-3xl:3rem;--space-4xl:4rem;--space-5xl:6rem;
  --radius-sm:4px;--radius-input:6px;--radius-sheet:8px;
  --text-xs:.75rem;--text-sm:.875rem;--text-md:1rem;--text-lg:1.125rem;
  --ease-out:cubic-bezier(.16,1,.3,1);--dur-short:180ms;
}