nav a{position:relative;padding:9px 0;transition:color .25s ease}nav a:after{content:'';position:absolute;left:0;right:0;bottom:2px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.8,.2,1)}nav a:hover:after,nav a.current:after{transform:scaleX(1)}nav a.clicked{animation:navFlash .5s ease}@keyframes navFlash{0%,100%{opacity:1}40%{opacity:.35;transform:translateY(2px)}}.button{transition:transform .22s ease,box-shadow .22s ease}.button:hover{transform:translateY(-2px);box-shadow:0 9px 18px rgba(16,16,15,.16)}.button:active,.button.tap{animation:tap .36s ease}@keyframes tap{0%{transform:scale(1)}45%{transform:scale(.94)}100%{transform:scale(1)}}.filter{transition:transform .2s ease,background .2s ease}.filter:active{transform:scale(.92)}.text-link{transition:letter-spacing .25s ease}.text-link:hover{letter-spacing:.025em}@media(max-width:720px){nav a.current:after{transform:scaleX(0)}}