.presentation-deck {
  width: 100%;
  max-width: 980px;
  margin: 56px auto 0;
}

.presentation-deck__stage {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  background: #0f4984;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.18);
}

.presentation-slider {
  background: #fff;
}

.presentation-slider__image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #fff;
}

.presentation-slider__nav {
  position: absolute;
  z-index: 3;
  top: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: rgba(15, 73, 132, 0.92);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  transform: translateY(-50%);
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.presentation-slider__nav:hover,
.presentation-slider__nav:focus {
  background: rgba(66, 194, 179, 0.95);
  transform: translateY(-50%) scale(1.04);
}

.presentation-slider__nav.swiper-button-disabled {
  cursor: default;
  opacity: 0.32;
  pointer-events: none;
}

.presentation-slider__nav--prev {
  left: 18px;
}

.presentation-slider__nav--next {
  right: 18px;
}

.presentation-slider__nav .material-icons {
  font-size: 34px;
  line-height: 1;
}

.presentation-deck__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
}

.presentation-slider__pagination {
  position: static;
  width: auto;
  color: #0f4984;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
}

.presentation-deck__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.presentation-deck__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 2px solid #0f4984;
  border-radius: 22px;
  color: #0f4984;
  background: #fff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.presentation-deck__button:hover,
.presentation-deck__button:focus {
  color: #fff;
  background: #0f4984;
  text-decoration: none;
}

.presentation-deck__button .material-icons {
  margin-right: 6px;
  font-size: 20px;
}

.presentation-deck__stage:fullscreen {
  display: flex;
  align-items: center;
  width: 100vw;
  height: 100vh;
  border-radius: 0;
  background: #0f4984;
}

.presentation-deck__stage:fullscreen .presentation-slider {
  width: 100%;
}

.presentation-deck__stage:fullscreen .presentation-slider__image {
  width: 100vw;
  height: 100vh;
  object-fit: contain;
}

@media (max-width: 767.98px) {
  .presentation-deck {
    margin-top: 40px;
  }

  .presentation-deck__stage {
    border-radius: 12px;
  }

  .presentation-slider__nav {
    width: 38px;
    height: 38px;
  }

  .presentation-slider__nav--prev {
    left: 8px;
  }

  .presentation-slider__nav--next {
    right: 8px;
  }

  .presentation-slider__nav .material-icons {
    font-size: 28px;
  }

  .presentation-deck__toolbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .presentation-deck__actions {
    width: 100%;
  }

  .presentation-deck__button {
    flex: 1;
    min-height: 44px;
    padding-right: 10px;
    padding-left: 10px;
  }
}