.deck-main { padding-block: 58px 64px; }
.deck-intro { display: flex; justify-content: space-between; align-items: flex-end; gap: 44px; margin-bottom: 36px; }
.deck-intro h1 { font-size: clamp(38px, 4.3vw, 58px); line-height: 1.12; letter-spacing: -1.6px; margin-block: 15px 20px; }
.deck-intro h1 span { color: var(--orange); }
.deck-intro p { max-width: 660px; font-size: 19px; line-height: 1.7; color: var(--muted); }
.deck-downloads { display: flex; flex-direction: column; align-items: stretch; gap: 12px; padding-bottom: 4px; }
.deck-viewer { background: var(--navy); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.deck-viewer:focus-visible { outline: 3px solid var(--orange); outline-offset: 5px; }
.deck-screen { position: relative; aspect-ratio: 16 / 9; background: var(--navy); display: flex; align-items: center; justify-content: center; }
.deck-screen img { display: block; width: 100%; height: 100%; object-fit: contain; }
.deck-controls { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 20px; background: white; color: var(--ink); }
.deck-controls[hidden], .deck-control[hidden], .slide-error[hidden] { display: none; }
.deck-pagination { display: flex; align-items: center; gap: 20px; flex-shrink: 0; }
#slide-counter { font-size: 16px; font-variant-numeric: tabular-nums; min-width: 55px; text-align: center; }
.deck-control, .slide-picker select { border: 1px solid #cbd5e1; border-radius: 6px; color: var(--navy); background: white; font: inherit; font-size: 16px; min-height: 44px; padding: 9px 15px; }
.deck-control:hover:not(:disabled) { border-color: var(--orange); color: var(--orange); background: #fff7ed; }
.deck-control:disabled { opacity: .4; cursor: default; }
.slide-picker { display: flex; align-items: center; gap: 10px; font-size: 16px; min-width: 0; }
.slide-picker select { width: min(290px, 25vw); overflow: hidden; text-overflow: ellipsis; }
.slide-picker select:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.slide-summary { color: var(--navy); font-size: 20px; font-weight: 600; line-height: 1.5; margin-top: 22px; }
.keyboard-hint { color: var(--muted); font-size: 15px; line-height: 1.7; margin-top: 8px; }
.deck-outline { margin-top: 32px; border-top: 1px solid var(--line); padding-top: 24px; }
.deck-outline summary { color: var(--navy); font-size: 20px; font-weight: 600; cursor: pointer; }
.deck-outline ol { columns: 2; column-gap: 48px; margin: 22px 0 0; padding-left: 26px; }
.deck-outline li { break-inside: avoid; padding: 7px 0; color: var(--muted); }
.deck-outline button { color: var(--ink); background: none; border: 0; text-align: left; font-size: 17px; line-height: 1.5; padding: 3px 6px; }
.deck-outline button:hover { color: var(--orange); }
.slide-error { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; padding: 30px; color: white; background: var(--navy); font-size: 18px; line-height: 1.8; }
.slide-error a, .noscript-note a { text-decoration: underline; }
.deck-viewer:fullscreen { border: 0; border-radius: 0; display: flex; flex-direction: column; justify-content: center; }
.deck-viewer:fullscreen .deck-screen { flex: 1; min-height: 0; aspect-ratio: auto; }
.deck-viewer:fullscreen .deck-controls { flex-shrink: 0; }
@media (max-width: 900px) {
  .deck-intro { align-items: flex-start; flex-direction: column; gap: 24px; }
  .deck-downloads { flex-direction: row; flex-wrap: wrap; }
  .deck-controls { flex-wrap: wrap; gap: 14px; }
  .slide-picker { order: 3; width: 100%; }
  .slide-picker select { flex: 1; width: 100%; }
}
@media (max-width: 600px) {
  .deck-main { padding-block: 32px 40px; }
  .deck-intro { margin-bottom: 26px; }
  .deck-intro p { font-size: 17px; }
  .deck-downloads { width: 100%; flex-direction: column; }
  .deck-downloads .button { width: 100%; }
  .deck-controls { padding: 12px; gap: 12px; }
  .deck-pagination { width: 100%; justify-content: space-between; gap: 10px; }
  .deck-control { padding: 8px 12px; }
  #fullscreen { width: 100%; order: 4; }
  .deck-outline ol { columns: 1; }
  .slide-summary { font-size: 18px; }
  .keyboard-hint { font-size: 14px; }
}