/* The existing hero typography, scroll stages and preloader stay in charge. */
.presentation-block--index::before {
  /* Keep detail in the lower rocks instead of fading them to solid black. */
  opacity: 1;
  background: linear-gradient(180deg, rgba(0, 0, 0, .2) 0%, rgba(0, 0, 0, .78) 100%);
  pointer-events: none;
}
.presentation-block--index.step_2::before {
  opacity: 1;
}
.presentation-block--index .presentation-block__webgl {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  background: #000;
}
.presentation-block--index .presentation-block__webgl canvas {
  display: block;
  width: 100%;
  height: 100%;
  opacity: .864;
  transition: opacity .6s;
}
.presentation-block--index.step_2 .presentation-block__webgl canvas {
  opacity: .62;
}
.presentation-block--index.step_2 .presentation-block__abs-images {
  filter: brightness(.72);
}
/* Both intro stages occupy exactly one viewport, including short screens. */
.presentation-block.presentation-block--index {
  display: flex;
  align-items: center;
  justify-content: center;
  /* Prevent focus from scrolling the clipped intro internally. */
  overflow: clip;
  overflow-anchor: none;
  min-height: 0;
  height: 100vh;
  height: 100svh;
}
.presentation-block--index .presentation-block__block-1 {
  width: 100%;
}
.presentation-block--index.step_2 .presentation-block__block-1 {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.presentation-block--index .presentation-block__logo,
.presentation-block--index.step_1 .presentation-block__logo {
  padding: 0;
}
.presentation-block--index .presentation-block__title,
.presentation-block--index.step_1 .presentation-block__title {
  padding: clamp(2.4rem, 5vh, 4.8rem) 0 0;
}
.presentation-block--index .presentation-block__premium,
.presentation-block--index.step_1 .presentation-block__premium {
  padding-top: clamp(2.4rem, 5vh, 4.1rem);
  top: 0;
}
.presentation-block--index .presentation-block__block-2 {
  top: 58%;
  bottom: auto;
  transform: translateY(calc(-50% + 4rem));
}
.presentation-block--index.step_2 .presentation-block__block-2 {
  bottom: auto;
  transform: translateY(-50%);
}
.presentation-block--index .presentation-block__scroll-down {
  bottom: clamp(2.4rem, 10vh, 10rem);
  width: 44px;
  height: 48px;
  padding: 0;
  border: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
/* Position the outline and wheel explicitly: native buttons center inline
   content differently, which let the old animated span cross the bottom edge. */
.presentation-block--index .presentation-block__scroll-down::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 50%;
  width: 26px;
  height: 40px;
  box-sizing: border-box;
  border: 1px solid #ff6e00;
  border-radius: 16px;
  transform: translateX(-50%);
  pointer-events: none;
}
.presentation-block--index .presentation-block__scroll-down .scroll-down {
  position: absolute;
  top: 12px;
  left: 50%;
  width: 2px;
  height: 8px;
  margin: 0;
  border-radius: 2px;
  transform: translateX(-50%);
  animation: hero-scroll-cue 2s ease-in-out infinite;
  pointer-events: none;
}
.presentation-block--index .presentation-block__scroll-down:focus-visible {
  outline: 2px solid #efefef;
  outline-offset: 5px;
}
.presentation-block--index .presentation-block__stone,
.presentation-block--index .presentation-block__premium {
  display: inline-block;
  color: #ff6e00;
  font-family: Gilroy, sans-serif;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .24em;
}
.presentation-block--index .presentation-block__wordmark {
  display: flex;
  justify-content: space-between;
  width: min(132rem, calc(100vw - 4.8rem));
  margin: 0 auto;
  color: #efefef;
  font-family: Moniqa-NarrowParagraph, sans-serif;
  font-size: clamp(8rem, 19vw, 28rem);
  font-weight: 400;
  line-height: .72;
  letter-spacing: 0;
  text-transform: uppercase;
  transition: transform .6s;
}
.presentation-block--index.step_1 .presentation-block__wordmark {
  transform: scale(1.64);
}
.presentation-block--index .presentation-block__webgl::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 32%, rgba(0, 0, 0, .25) 75%, #000 100%);
}
.presentation-block--index.has-webgl .presentation-block__abs-images {
  opacity: 0;
  pointer-events: none;
}
.presentation-block--index.webgl-pending .presentation-block__abs-images {
  opacity: 0;
  transition: none;
}
@media (max-height: 650px) {
  .presentation-block--index .presentation-block__wordmark {
    font-size: clamp(6rem, min(19vw, 30vh), 28rem);
  }
  .presentation-block--index .presentation-block__block-2 h1 {
    font-size: clamp(2.4rem, 5vh, 3rem);
    line-height: 1.2;
    margin-bottom: 3rem;
  }
}
@media (max-width: 700px) {
  .presentation-block--index .presentation-block__webgl::after {
    background: none;
  }
  .presentation-block--index .presentation-block__webgl canvas {
    opacity: 1;
  }
  .presentation-block--index.step_2 .presentation-block__webgl canvas {
    opacity: .76;
  }
  .presentation-block--index .presentation-block__abs-images {
    filter: none;
  }
  .presentation-block--index.step_2 .presentation-block__abs-images {
    filter: brightness(.76);
  }
  .presentation-block--index .presentation-block__scroll-down::before {
    width: 24px;
  }
}
@keyframes hero-scroll-cue {
  0%, 100% { transform: translate(-50%, 0); }
  60% { transform: translate(-50%, 12px); }
}
@media (prefers-reduced-motion: reduce) {
  .presentation-block--index *, .presentation-block--index::before {
    transition: none !important;
  }
  .presentation-block--index.has-webgl .presentation-block__abs-images {
    transition: none;
  }
  .presentation-block--index .presentation-block__scroll-down .scroll-down {
    animation: none;
  }
}