:root {
  --bg: #020405;
  --glow-aqua: rgba(78, 196, 166, 0.26);
  --glow-steel: rgba(108, 124, 138, 0.22);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(68vmax 46vmax at 48% 42%, rgba(94, 206, 176, 0.07), transparent 72%),
    radial-gradient(55vmax 38vmax at 58% 58%, rgba(123, 138, 151, 0.05), transparent 76%),
    var(--bg);
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.landing {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.logo-shell {
  margin: 0;
  position: relative;
  width: min(92vw, 1120px);
  animation:
    logo-enter 900ms cubic-bezier(0.2, 0.7, 0.2, 1) both,
    logo-float 4.8s ease-in-out 1s infinite;
}

.logo {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.62));
}

.logo-shell::before {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  bottom: -9%;
  height: 15%;
  background:
    radial-gradient(closest-side, var(--glow-aqua), transparent 72%),
    radial-gradient(closest-side, var(--glow-steel), transparent 80%);
  filter: blur(12px);
  z-index: -1;
  animation: glow-pulse 4.8s ease-in-out 1s infinite;
}

@keyframes logo-enter {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes logo-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

@keyframes glow-pulse {
  0%,
  100% {
    opacity: 0.34;
    transform: scale(0.98);
  }
  50% {
    opacity: 0.58;
    transform: scale(1.02);
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo-shell,
  .logo-shell::before {
    animation: none;
  }
}