.ppt-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.75rem;margin:1.25rem 0}
.ppt-gallery figure{min-width:0;margin:0}
.ppt-gallery a{display:block;overflow:hidden;border-radius:10px;background:#111;aspect-ratio:4/3}
.ppt-gallery img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .2s ease,opacity .2s ease}
.ppt-gallery a:hover img{transform:scale(1.025);opacity:.9}
.ppt-gallery figcaption{margin-top:.35rem;color:var(--muted,#667085);font-size:.82rem;line-height:1.4;text-align:center}
.ppt-lightbox{position:fixed;inset:0;z-index:100000;display:grid;grid-template:1fr auto/1fr;box-sizing:border-box;padding:3.5rem 4.5rem 1.25rem;background:rgba(4,7,12,.94);color:#fff}
.ppt-lightbox[hidden]{display:none}
.ppt-lightbox-stage{display:flex;min-width:0;min-height:0;align-items:center;justify-content:center}
.ppt-lightbox-image{display:block;max-width:100%;max-height:calc(100vh - 8rem);object-fit:contain;box-shadow:0 16px 60px rgba(0,0,0,.4)}
.ppt-lightbox-caption{min-height:1.5em;margin:.75rem auto 0;text-align:center;line-height:1.5}
.ppt-lightbox button{position:absolute;display:grid;place-items:center;width:42px;height:42px;padding:0;border:1px solid rgba(255,255,255,.18);border-radius:11px;background:rgba(25,30,38,.78);color:#fff;box-shadow:0 4px 18px rgba(0,0,0,.24);cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .15s ease}
.ppt-lightbox button:hover{border-color:rgba(255,255,255,.42);background:rgba(50,58,70,.92)}.ppt-lightbox button:focus-visible{outline:2px solid #fff;outline-offset:3px}.ppt-lightbox button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.ppt-lightbox-close{top:.9rem;right:.9rem}.ppt-lightbox-prev{top:50%;left:1rem;transform:translateY(-50%)}.ppt-lightbox-next{top:50%;right:1rem;transform:translateY(-50%)}.ppt-lightbox-prev:hover,.ppt-lightbox-next:hover{transform:translateY(-50%) scale(1.04)}
.ppt-lightbox-counter{position:absolute;top:1.35rem;left:50%;transform:translateX(-50%);font-size:.82rem;color:rgba(255,255,255,.72)}
body.ppt-lightbox-open{overflow:hidden}
@media(max-width:640px){.ppt-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem}.ppt-lightbox{padding:3rem .75rem 1rem}.ppt-lightbox-prev{left:.5rem}.ppt-lightbox-next{right:.5rem}.ppt-lightbox button{width:40px;height:40px}.ppt-lightbox-image{max-height:calc(100vh - 7rem)}}
@media(prefers-reduced-motion:reduce){.ppt-gallery img,.ppt-lightbox button{transition:none}}