.intro-screen,
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

.intro-active {
  overflow: hidden;
}

.intro-screen {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  overflow-y: auto;
  place-items: center;
  padding: clamp(28px, 5vh, 64px) clamp(20px, 5vw, 64px);
  color: #f7f7f7;
  background: #000;
  opacity: 1;
  transition: opacity 600ms ease;
}

.intro-screen.is-exiting {
  pointer-events: none;
  opacity: 0;
}

.intro-screen__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(100%, 760px);
  margin: auto;
  text-align: center;
}

.intro-screen__logo {
  display: block;
  width: clamp(380px, 34vw, 460px);
  max-width: 100%;
  height: auto;
  object-fit: contain;
  opacity: 0;
  animation: intro-fade-up 600ms ease-out 80ms forwards;
}

.intro-screen__languages {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 3vw, 30px);
  margin-top: clamp(8px, 1.5vh, 16px);
  opacity: 0;
  animation: intro-fade-up 520ms ease-out 280ms forwards;
}

.intro-screen__languages button {
  position: relative;
  min-height: 44px;
  border: 0;
  padding: 10px 1px 9px;
  color: #686868;
  background: transparent;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 180ms ease;
}

.intro-screen__languages button::after {
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 1px;
  background: #fff;
  content: "";
  opacity: 0;
  transform: scaleX(0.35);
  transition: opacity 180ms ease, transform 180ms ease;
}

.intro-screen__languages button:hover,
.intro-screen__languages button:focus-visible,
.intro-screen__languages button[aria-pressed="true"] {
  color: #fff;
}

.intro-screen__languages button[aria-pressed="true"]::after {
  opacity: 1;
  transform: scaleX(1);
}

.intro-screen__languages button:focus-visible {
  border-radius: 2px;
  outline: 1px solid #fff;
  outline-offset: 4px;
}

.intro-screen__taglines {
  display: grid;
  align-content: start;
  min-height: 96px;
  margin-top: clamp(15px, 2.4vh, 26px);
  opacity: 0;
  animation: intro-fade-up 600ms ease-out 480ms forwards;
}

.intro-screen__taglines h1 {
  margin: 0;
  color: #f5f5f5;
  font-size: clamp(1.65rem, 3.2vw, 2.55rem);
  font-weight: 500;
  letter-spacing: 0.015em;
  line-height: 1.15;
}

.intro-screen__taglines p {
  margin: 12px 0 0;
  color: #b8b8b8;
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.intro-screen__localized-text {
  transition: opacity 130ms ease;
}

.intro-screen.is-switching-language .intro-screen__localized-text {
  opacity: 0;
}

.intro-screen__enter {
  min-width: 148px;
  min-height: 46px;
  margin-top: clamp(24px, 3.6vh, 38px);
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 0;
  padding: 11px 28px;
  color: #fff;
  background: transparent;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-indent: 0.34em;
  cursor: pointer;
  opacity: 0;
  transition: color 220ms ease, background-color 220ms ease, box-shadow 220ms ease;
  animation: intro-fade-up 550ms ease-out 820ms forwards;
}

.intro-screen__enter:hover,
.intro-screen__enter:focus-visible {
  color: #000;
  background: #fff;
}

.intro-screen__enter:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 5px;
  box-shadow: 0 0 0 2px #000;
}

.intro-screen__mission {
  display: grid;
  align-content: start;
  width: min(100%, 680px);
  min-height: 5.2em;
  margin-top: clamp(26px, 4vh, 42px);
  color: #797979;
  opacity: 0;
  animation: intro-fade-up 550ms ease-out 1050ms forwards;
}

.intro-screen__mission p {
  margin: 0;
  font-size: clamp(0.78rem, 1.15vw, 0.92rem);
  line-height: 1.65;
}

.intro-screen__footer {
  display: grid;
  gap: 4px;
  margin-top: clamp(20px, 3vh, 34px);
  color: #565656;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  line-height: 1.5;
  opacity: 0;
  animation: intro-fade-up 500ms ease-out 1250ms forwards;
}

.intro-screen__footer strong {
  color: #747474;
  font-weight: 500;
}

@keyframes intro-fade-up {
  from {
    opacity: 0;
    transform: translateY(9px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 620px) {
  .intro-screen {
    padding: 24px 18px 30px;
  }

  .intro-screen__content {
    width: 100%;
  }

  .intro-screen__logo {
    width: 78vw;
    max-width: 78vw;
  }

  .intro-screen__taglines {
    min-height: 92px;
    margin-top: 10px;
  }

  .intro-screen__taglines h1 {
    font-size: clamp(1.45rem, 7vw, 1.9rem);
  }

  .intro-screen__taglines p {
    margin-top: 8px;
    font-size: 0.98rem;
  }

  .intro-screen__enter {
    margin-top: 22px;
  }

  .intro-screen__mission {
    width: min(calc(100% - 4px), 32rem);
    min-height: 9em;
    margin-top: 24px;
  }

  .intro-screen__languages {
    width: 100%;
    gap: clamp(12px, 5vw, 22px);
    margin-top: 4px;
  }

  .intro-screen__languages button {
    font-size: 0.7rem;
  }
}

@media (max-height: 720px) {
  .intro-screen {
    place-items: start center;
    padding-block: 18px 24px;
  }

  .intro-screen__logo {
    width: clamp(280px, 48vh, 390px);
  }

  .intro-screen__enter {
    margin-top: 18px;
  }

  .intro-screen__mission {
    margin-top: 20px;
  }

  .intro-screen__footer {
    margin-top: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro-screen,
  .intro-screen__logo,
  .intro-screen__languages,
  .intro-screen__taglines,
  .intro-screen__enter,
  .intro-screen__mission,
  .intro-screen__footer,
  .intro-screen__localized-text {
    animation: none;
    transition-duration: 1ms;
  }

  .intro-screen__logo,
  .intro-screen__languages,
  .intro-screen__taglines,
  .intro-screen__enter,
  .intro-screen__mission,
  .intro-screen__footer {
    opacity: 1;
    transform: none;
  }
}