:root{
--ease-out:cubic-bezier(.22,1,.36,1); /* @kind other */
--ease-in-out:cubic-bezier(.65,0,.35,1); /* @kind other */
--dur-fast:180ms; /* @kind other */
--dur-base:400ms; /* @kind other */
--dur-slow:900ms; /* @kind other */
--shadow-none:none;--shadow-preview:0 10px 30px rgba(0,0,0,.18);
}