.act1 {
  position: relative;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  z-index: var(--z-background);
  opacity: 0.4;
}

.act1__content {
  position: relative;
  z-index: var(--z-content);
  text-align: center;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.act1__line {
  font-size: var(--size-2xl);
  font-weight: var(--font-weight-light);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 0.75rem;
  opacity: 0;
}

.act1__title {
  margin-top: var(--space-lg);
  opacity: 0;
}

.act1__title-main {
  font-size: var(--size-hero);
  font-weight: var(--font-weight-black);
  color: var(--color-white);
  letter-spacing: 0.05em;
  line-height: 1;
}

.act1__title-sub {
  font-size: var(--size-xl);
  font-weight: var(--font-weight-light);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}