html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  min-height: 100%;
  background: #050409;
  overflow: hidden;
}

body {
  display: flex;
  align-items: stretch;
  justify-content: center;
  font-family: 'Noto Sans TC', sans-serif;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(900px 620px at 18% 6%, rgba(112, 76, 255, 0.24), transparent 62%),
    radial-gradient(820px 560px at 82% 20%, rgba(25, 172, 168, 0.22), transparent 64%),
    radial-gradient(760px 580px at 50% 105%, rgba(214, 174, 91, 0.12), transparent 64%),
    #050409;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse at center, black 18%, transparent 72%);
}

.alpha-app {
  position: relative;
  width: 100%;
  max-width: min(100vw, 430px);
  height: 100dvh;
  min-height: 100dvh;
  margin: 0 auto;
  overflow: hidden;
  background: #070510;
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.04), 0 24px 80px rgba(0,0,0,0.45);
}

.alpha-scroll {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.alpha-scroll::-webkit-scrollbar,
[data-deck]::-webkit-scrollbar {
  display: none;
}

* {
  box-sizing: border-box;
}

#alpha-fallback-home > div,
#alpha-fallback-quiz > div,
#alpha-fallback-result > div,
#alpha-fallback-friends > div,
#alpha-fallback-future > div {
  max-width: min(100vw, 430px) !important;
}

@media (max-width: 430px) {
  body {
    align-items: stretch;
    padding: 0;
  }

  .alpha-app {
    max-width: 100vw;
    border-radius: 0;
    box-shadow: none;
  }
}

@media (min-width: 700px) {
  body {
    align-items: center;
    padding: 24px;
  }

  .alpha-app {
    width: min(430px, calc(100vw - 48px));
    height: min(900px, calc(100dvh - 48px));
    min-height: min(720px, calc(100dvh - 48px));
    border-radius: 34px;
    box-shadow:
      0 0 0 1px rgba(255,255,255,0.08),
      0 28px 90px rgba(0,0,0,0.58),
      0 0 120px rgba(112,76,255,0.18);
  }

  #alpha-fallback-home,
  #alpha-fallback-quiz,
  #alpha-fallback-result,
  #alpha-fallback-friends,
  #alpha-fallback-future {
    align-items: center !important;
    padding: 24px !important;
  }

  #alpha-fallback-home > div,
  #alpha-fallback-quiz > div,
  #alpha-fallback-result > div,
  #alpha-fallback-friends > div,
  #alpha-fallback-future > div {
    width: min(430px, calc(100vw - 48px)) !important;
    height: min(900px, calc(100dvh - 48px)) !important;
    border-radius: 34px !important;
    box-shadow:
      0 0 0 1px rgba(255,255,255,0.08),
      0 28px 90px rgba(0,0,0,0.58),
      0 0 120px rgba(112,76,255,0.18) !important;
  }
}

@media (min-width: 1024px) {
  body::after {
    content: "AI Survival Index";
    position: fixed;
    left: max(32px, calc((100vw - 980px) / 2));
    bottom: 32px;
    pointer-events: none;
    color: rgba(255,255,255,0.08);
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(42px, 6vw, 84px);
    font-weight: 700;
    letter-spacing: 0.04em;
  }
}