.presentation-slider { margin-block: 28px; min-width: 0; }
.presentation-track { display: flex; gap: 16px; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x mandatory; scrollbar-width: none; border-radius: 10px; -webkit-overflow-scrolling: touch; }
.presentation-track::-webkit-scrollbar { display: none; }
.presentation-slide { flex: 0 0 100%; min-width: 0; margin: 0; scroll-snap-align: start; scroll-snap-stop: always; }
.presentation-slide > a { display: block; overflow: hidden; border-radius: 10px; }
.presentation-slide img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; user-select: none; }
.presentation-slide figcaption { margin-top: 12px; color: var(--ink-soft); font-size: 15px; line-height: 1.5; text-wrap: pretty; }
.presentation-controls { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; }
.presentation-controls[hidden] { display: none; }
.presentation-counter { margin: 0; color: var(--ink-soft); font-size: 14px; font-weight: 650; font-variant-numeric: tabular-nums; }
.presentation-arrows { display: flex; gap: 10px; }
.presentation-arrows button { display: grid; place-items: center; width: 46px; height: 46px; padding: 0; border: 1px solid var(--line); border-radius: 13px; background: var(--paper-bright); color: var(--ink); cursor: pointer; touch-action: manipulation; transition: background-color 180ms ease-out, border-color 180ms ease-out; }
.presentation-arrows button:hover:not(:disabled) { background: var(--orange-soft); border-color: var(--orange-dark); }
.presentation-arrows button:disabled { color: var(--muted); opacity: .5; cursor: default; }
.presentation-arrows svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.presentation-track:focus-visible,.presentation-slide > a:focus-visible,.presentation-arrows button:focus-visible { outline: 3px solid var(--orange-dark); outline-offset: -3px; }
.presentation-hint { margin-top: 12px; color: var(--ink-soft); font-size: 14px; }
.presentation-downloads { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }
.presentation-downloads .button { gap: 10px; }
.presentation-downloads .button-secondary { background: var(--paper-bright); color: var(--ink); border-color: var(--line); box-shadow: none; }
.presentation-downloads .button-secondary:hover { background: #fff; color: var(--ink); border-color: var(--orange-dark); }
.presentation-downloads svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; flex: 0 0 auto; }
@media(max-width:640px) {
 .presentation-slider { margin-block: 24px; }
 .presentation-slide figcaption { font-size: 14px; }
 .presentation-downloads { flex-direction: column; gap: 10px; }
}
@media(prefers-reduced-motion:reduce) {
 .presentation-arrows button { transition: none; }
}