.demo-preview{position:relative;width:100%;min-height:100vh}.demo-preview-back{position:fixed;z-index:999;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;background:linear-gradient(131deg,#605f5f,#000000 59%);color:#fff;font-family:"Inter",var(--poppins),sans-serif;font-size:13.5px;font-weight:600;text-decoration:none;box-shadow:0 8px 24px rgba(0,0,0,.28);transition:filter .2s ease,transform .2s ease}.demo-preview-back:hover{filter:brightness(1.12)}.demo-preview-back:active{transform:scale(.97)}