.container {
  width: min(100%, var(--container-max));
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

.columns {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin: 0;
}

.columns.is-centered {
  justify-content: center;
}

.columns.is-vcentered {
  align-items: center;
}

.columns.is-variable {
  --columns-gap: var(--space-5);
  gap: var(--columns-gap);
}

.columns.is-variable.is-8 {
  --columns-gap: var(--space-7);
}

.column {
  flex: 1 1 100%;
  min-width: 0;
}

.background-animation {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  background: var(--bg);
}

.background-animation .bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.7;
}

.background-animation::before {
  content: '';
  position: absolute;
  inset: -30%;
  background:
    radial-gradient(circle at 18% 22%, rgba(var(--bg), 0.22), transparent 55%),
    radial-gradient(circle at 78% 18%, rgba(var(--bg), 0.18), transparent 60%),
    radial-gradient(circle at 52% 82%, rgba(var(--bg), 0.2), transparent 65%);
  filter: blur(1px);
  animation: drift 26s ease-in-out infinite alternate;
}

.background-animation::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(120deg, rgba(var(--accent-rgb), 0.06) 0%, transparent 50%),
    linear-gradient(300deg, rgba(var(--bg), 0.1) 10%, transparent 55%),
    repeating-linear-gradient(90deg, rgba(var(--accent-rgb), 0.06) 0, rgba(var(--accent-rgb), 0.06) 1px, transparent 1px, transparent 90px),
    repeating-linear-gradient(0deg, rgba(var(--bg), 0.04) 0, rgba(var(--bg), 0.04) 1px, transparent 1px, transparent 120px);
  opacity: 0.35;
  transform: scale(1.1);
  animation: pan 40s linear infinite;
}

@keyframes drift {
  from {
    transform: scale(1) translate(-2%, -2%);
  }
  to {
    transform: scale(1.1) translate(2%, 3%);
  }
}

@keyframes pan {
  from {
    background-position: 0 0, 0 0, 0 0, 0 0;
  }
  to {
    background-position: 220px 140px, -160px -120px, 240px 0, 0 180px;
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(0.95);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.85;
  }
}

.page-stack__section {
  position: relative;
  margin: var(--space-7) 0;
  padding-top: var(--space-4);
}

.page-stack__section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(22rem, 70%);
  height: 1px;
  background: linear-gradient(90deg,
      transparent 0%,
      rgba(var(--accent-rgb), 0.35) 50%,
      transparent 100%);
  opacity: 0.45;
}

.page-stack__loader {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin: var(--space-6) auto;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  background: rgba(17, 19, 24, 0.78);
  color: var(--muted);
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.page-stack__loader::before {
  content: '';
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: rgba(var(--primary-rgb), 0.82);
  box-shadow: 0 0 18px rgba(var(--primary-rgb), 0.45);
  animation: loaderPulse 1s ease-in-out infinite alternate;
}

.page-stack__loader.is-active {
  display: inline-flex;
}

@keyframes loaderPulse {
  from {
    transform: scale(0.75);
    opacity: 0.6;
  }
  to {
    transform: scale(1.1);
    opacity: 1;
  }
}