:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 10px;
  --space-4: 14px;
  --space-5: 16px;
  --space-6: 20px;
  --space-7: 24px;
  --space-8: 32px;
  --space-9: 48px;

  /* Fluid rhythm — the page is built on these, not on fixed steps. */
  --gutter: clamp(20px, 5vw, 64px); /* @kind other */
  --section-y: clamp(64px, 10vw, 128px); /* @kind other */
  --section-head-gap: clamp(36px, 5vw, 56px); /* @kind other */
  --card-pad: clamp(22px, 3vw, 30px); /* @kind other */
  --panel-pad: clamp(24px, 3.4vw, 34px); /* @kind other */
  --container-max: 1180px;
  --measure: 72ch;  /* @kind other */

  /* Radii — 14px everywhere, 100px on buttons and chips, 10px on inputs. */
  --radius-input: 10px;
  --radius: 14px;
  --radius-pill: 100px;

  --border-width: 1px;
  --border-width-thick: 2px;

  --nav-height: 68px;
  --control-height: 54px;
  --control-height-sm: 40px;
  --tile-ratio: 9 / 16;  /* @kind other */
}