/* offmode — motion (04 — RULES / モーション).
   "Motion should feel like a still image gently breathing."
   Allowed: reveal (fade + 18px rise, 0.7s), 2px hover lift, 8–14s atmospheric drift.
   Forbidden: parallax, bounce, fast zoom, flashing, rapid particles. */
:root{
  --ease-calm:cubic-bezier(.22,.61,.36,1); /* @kind other */
  --ease-veil:cubic-bezier(.4,0,.2,1); /* @kind other */

  --dur-hover:.28s; /* @kind other */
  --dur-press:.12s; /* @kind other */
  --dur-reveal:.7s; /* @kind other */
  --dur-theme:.55s; /* @kind other */     /* テーマ切替 0.55s */
  --drift-slow:14s; /* @kind other */     /* atmospheric float range 8–14s */
  --drift-fast:8s; /* @kind other */

  --reveal-rise:18px;
}
@media (prefers-reduced-motion:reduce){
  :root{
    --dur-hover:0s; /* @kind other */
    --dur-press:0s; /* @kind other */
    --dur-reveal:0s; /* @kind other */
    --dur-theme:0s; /* @kind other */
    --reveal-rise:0px;
  }
}