body{font-family:Arial,sans-serif;background:#111;color:#fff;margin:0}
.wrap{max-width:1000px;margin:auto;padding:20px}
#main{width:100%;max-height:75vh;object-fit:contain;background:#000}
.controls{display:flex;justify-content:space-between;margin:10px 0}
button{font-size:20px;padding:8px 16px}
#thumbs{display:flex;gap:8px;overflow:auto}
#thumbs img{height:70px;cursor:pointer;opacity:.7}
#thumbs img.active{outline:2px solid #fff;opacity:1}
#counter{text-align:right;margin-bottom:8px}