*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  color: #1d1d1f;
  background: radial-gradient(circle at top, #f7fbff 0%, #eef5fb 50%, #e7eff7 100%);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  gap: 16px;
  overflow: hidden;
  text-align: center;
  padding: 40px 24px;
}

.logo-layer {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 0;
}

.glow {
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(72, 156, 214, 0.35), rgba(72, 156, 214, 0) 70%);
  filter: blur(4px);
}

.logo {
  width: min(70vw, 340px);
  max-width: 100%;
  height: auto;
  z-index: 1;
  transform: translate3d(0, 0, 0);
  transition: transform 0.1s linear;
  will-change: transform;
  mix-blend-mode: multiply;
  mask-image: radial-gradient(ellipse at center, #000 62%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 62%, transparent 78%);
}

.tagline {
  z-index: 1;
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  color: #4b5a6a;
}

.scroll-hint {
  z-index: 1;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #8796a5;
}

.spacer {
  height: 50vh;
}

@media (max-width: 520px) {
  .glow {
    width: 260px;
    height: 260px;
  }

  .tagline {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo {
    transition: none;
  }
}