.brand-entrance {
  position: fixed;
  z-index: 10000;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  background: #000;
  opacity: 1;
  transition: opacity 3800ms cubic-bezier(.45, 0, .2, 1);
}

.brand-entrance__identity {
  --intro-camera-zoom: 1;
  --intro-wordmark-reveal: 100%;
  position: relative;
  width: min(100vw, 176.6667vh);
  width: min(100vw, 176.6667svh);
  aspect-ratio: 848 / 480;
  flex-shrink: 0;
  transform: scale(var(--intro-camera-zoom));
  transform-origin: center;
  opacity: 0;
  transition: opacity 300ms ease;
}

.brand-entrance--ready .brand-entrance__identity { opacity: 1; }
.brand-entrance__canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.brand-entrance__fallback {
  display: none;
  position: absolute;
  left: 10.56%;
  top: 34.38%;
  width: 20.66%;
  height: auto;
}

.brand-entrance__wordmark {
  position: absolute;
  left: 33.22%;
  top: 42.66%;
  width: 53.2%;
  height: auto;
  opacity: 0;
  clip-path: inset(0 var(--intro-wordmark-reveal) 0 0);
}

.brand-entrance--fallback .brand-entrance__canvas { visibility: hidden; }
.brand-entrance--fallback .brand-entrance__fallback { display: block; }
.brand-entrance--leaving { opacity: 0; pointer-events: none; }
.brand-entrance--leaving .brand-entrance__identity {
  opacity: 0;
  transition: opacity 1300ms cubic-bezier(.4, 0, .6, 1);
}

/* The identity recedes before the main page reaches full brightness. Nothing
   is hidden until the script registers its cleanup and input dismissal paths. */
html.illume-entering > body > :is(header, main, footer) {
  opacity: 0;
  transition: none;
}

html.illume-entering.illume-revealing > body > :is(header, main, footer) {
  opacity: 1;
  transition: opacity 3450ms 350ms cubic-bezier(.25, .1, .25, 1);
}

html.illume-entering.illume-entering--still.illume-revealing > body > :is(header, main, footer) {
  transition: opacity 180ms ease;
}

.brand-entrance--still { transition-duration: 280ms; }
.brand-entrance--still .brand-entrance__identity { transition-duration: 180ms; }

@media (prefers-reduced-motion: reduce) {
  .brand-entrance { transition-duration: 280ms; }
  .brand-entrance__identity { transition-duration: 180ms; transform: none; }
}

.brand-sound-control {
  position: fixed;
  z-index: 10001;
  right: max(22px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 10px;
  border: 1px solid rgb(127 165 191 / 18%);
  border-radius: 50%;
  background: rgb(0 0 0 / 76%);
  color: #91b4cc;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 220ms ease, color 220ms ease, border-color 220ms ease, visibility 220ms;
  -webkit-tap-highlight-color: transparent;
}
.brand-sound-control.is-visible { opacity: .72; visibility: visible; pointer-events: auto; }
.brand-sound-control:hover,
.brand-sound-control:focus-visible { opacity: 1; color: #d1eafa; border-color: rgb(127 165 191 / 45%); }
.brand-sound-control:focus-visible { outline: 2px solid #78bee8; outline-offset: 4px; }
.brand-sound-control svg { width: 19px; height: 19px; overflow: visible; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.brand-sound-control__waves { opacity: 0; }
.brand-sound-control[data-mode='mute'] .brand-sound-control__waves { opacity: 1; }
.brand-sound-control[data-mode='mute'] .brand-sound-control__slash { opacity: 0; }
.brand-sound-control::after {
  content: attr(data-label);
  position: absolute;
  right: 0;
  bottom: calc(100% + 12px);
  padding: 8px 11px;
  border: 1px solid rgb(127 165 191 / 20%);
  border-radius: 5px;
  background: #071018;
  color: #d7e6f0;
  font: 12px/1.3 sans-serif;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(3px);
  pointer-events: none;
  transition: opacity 150ms ease, transform 150ms ease;
}
.brand-sound-control:focus-visible::after { opacity: 1; transform: none; }
@media (hover: hover) { .brand-sound-control:hover::after { opacity: 1; transform: none; } }
@media (max-width: 620px) {
  .brand-sound-control { right: max(16px, env(safe-area-inset-right)); top: max(14px, env(safe-area-inset-top)); bottom: auto; width: 44px; height: 44px; }
  .brand-sound-control::after { top: calc(100% + 12px); bottom: auto; }
}
@media (prefers-reduced-motion: reduce) { .brand-sound-control { display: none; } }