.site-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-8);
  color: var(--text-secondary);
  border-top: 1px solid var(--border-default);
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.site-footer a:hover {
  color: var(--text-primary);
}

a:focus-visible {
  outline: 3px solid var(--accent-cyan-strong);
  outline-offset: var(--space-1);
}

@keyframes pipeline-reveal {
  from {
    opacity: 0;
    transform: translateY(var(--space-4));
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 64rem) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 52rem;
  }

  .pipeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pipeline li:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 48rem) {
  .site-nav {
    align-items: flex-start;
    padding-block: var(--space-5);
  }

  .nav-links {
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: var(--space-3) var(--space-5);
  }

  .hero-grid {
    gap: var(--space-10);
    padding-block: var(--space-16) var(--space-20);
  }

  .evidence-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .evidence-strip a:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--border-default);
  }

  .evidence-strip a:nth-child(4) {
    border-top: 1px solid var(--border-default);
  }

  .demo-section,
  .sandbox-section,
  .evidence-layout,
  .adoption-section {
    grid-template-columns: 1fr;
  }

  .evidence-column.limitation {
    padding-inline: 0;
    border-top: 1px solid var(--border-default);
    border-left: 0;
  }

  .adoption-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 30rem) {
  .site-nav {
    display: grid;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .nav-links a:nth-child(2),
  .nav-links a:nth-child(3) {
    display: none;
  }

  .hero h1 {
    margin-bottom: var(--space-5);
    font-size: clamp(2.5rem, 13vw, 4rem);
  }

  .hero-grid {
    padding-block: var(--space-10) var(--space-16);
  }

  .korean-summary {
    margin-bottom: var(--space-6);
  }

  .pipeline,
  .evidence-strip {
    grid-template-columns: 1fr;
  }

  .evidence-strip a + a,
  .evidence-strip a:nth-child(3) {
    border-top: 1px solid var(--border-default);
    border-left: 0;
  }

  .action {
    width: 100%;
  }

  .section {
    padding-block: var(--space-16);
  }

  .adoption-section {
    padding: var(--space-6);
  }

  .sandbox-result-heading,
  .sandbox-fields {
    display: grid;
    grid-template-columns: 1fr;
  }

  .sandbox-status {
    max-width: none;
    text-align: left;
  }

  .sandbox-fields div:nth-child(odd),
  .sandbox-fields div:nth-child(even) {
    padding-inline: 0;
    border-left: 0;
  }

  .sandbox-result-actions .action {
    width: 100%;
  }

  .site-footer {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}