.cover{position:absolute;top:0;left:0;width:100%;height:100%;transition:0.25s;z-index:-1}.cover .bg{position:absolute;left:0;top:0;width:100%;height:100%;object-fit:cover;backface-visibility:hidden;filter:blur(20px) brightness(0.3);transition:filter 0.3s,
 transform 0.3s;animation:fade-blur-in 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;animation-delay:0.45s}.cover .gray{opacity:1;position:absolute;left:0;top:0;width:100%;height:100%;background-image:radial-gradient(transparent 0, rgba(0,0,0,0.5) 100%),radial-gradient(transparent 33%, rgba(0,0,0,0.3) 166%);transition:1.5s}.cover .gray.hidden{opacity:0;transition:1.5s}.cover .down{font-size:16px;color:white;position:absolute;bottom:30px;left:0;right:0;margin:0 auto;display:block;padding:20px 26px;border-radius:8px;background-color:rgba(0,0,0,0.3);width:120px;height:30px;display:flex;justify-content:center;align-items:center}.cover .down:hover{transform:scale(1.05);background-color:rgba(0,0,0,0.6)}.cover .down:active{transform:scale(1)}