#slb-overlay{position:fixed;inset:0;background:rgba(10,10,10,.92);z-index:99999;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s;visibility:hidden}
#slb-overlay.open{opacity:1;visibility:visible}
#slb-overlay img{max-width:92vw;max-height:86vh;box-shadow:0 4px 40px rgba(0,0,0,.6);user-select:none}
#slb-caption{position:absolute;bottom:18px;left:0;right:0;text-align:center;color:#ddd;font:14px/1.4 sans-serif;padding:0 60px}
.slb-btn{position:absolute;top:50%;transform:translateY(-50%);background:none;border:0;color:#fff;font-size:44px;cursor:pointer;padding:20px;opacity:.7;line-height:1}
.slb-btn:hover{opacity:1}
#slb-prev{left:6px}#slb-next{right:6px}
#slb-close{position:absolute;top:6px;right:14px;top:6px;transform:none;font-size:34px}
@media(max-width:600px){.slb-btn{font-size:32px;padding:12px}}