@media (max-width: 1060px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 66px;
    right: clamp(18px, 4vw, 56px);
    left: clamp(18px, 4vw, 56px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .header-tools {
    margin-left: auto;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  .feature-grid,
  .domain-grid,
  .roadmap-grid,
  .matrix-grid,
  .architecture-grid,
  .timeline-infographic {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .dashboard-shell {
    grid-template-columns: 1fr;
  }

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

  .dashboard-sidebar strong,
  .status-dot {
    grid-column: 1 / -1;
  }

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

  .hero,
  .showcase-layout {
    grid-template-columns: 1fr;
  }

  .capability-cover {
    justify-self: start;
  }

  .project-brief {
    grid-template-columns: 1fr;
  }

  .roadmap-canvas {
    min-height: 980px;
  }

  .road-svg {
    display: none;
  }

  .road-pin {
    display: none;
  }

  .road-card {
    position: static;
    width: auto;
  }

  .road-card::before {
    display: none;
  }

  .roadmap-canvas {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    padding: 18px;
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: 720px;
    padding-top: 92px;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  }

  .hero-metrics div:last-child {
    border-bottom: 0;
  }

  .intro-grid,
  .split-section,
  .team-section,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }

  .action-row,
  .signal-grid,
  .workflow-steps {
    grid-template-columns: 1fr;
  }

  .header-tools {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand span {
    font-size: 1rem;
  }

  .section,
  .page-hero {
    padding-right: 18px;
    padding-left: 18px;
  }

  .feature-grid,
  .domain-grid,
  .resource-grid,
  .roadmap-grid,
  .matrix-grid,
  .architecture-grid,
  .timeline-infographic {
    grid-template-columns: 1fr;
  }

  .timeline-node::after {
    display: none;
  }

  .roadmap-canvas {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .visual-panel img {
    min-height: 240px;
  }

  .dashboard-sidebar,
  .proof-card,
  .member-grid {
    grid-template-columns: 1fr;
  }

  .capability-cover {
    grid-template-columns: 1fr;
  }

  .nav-cta {
    flex: 1;
  }

  .timeline-card {
    min-height: 280px;
    min-width: 86px;
  }

  .timeline-card strong {
    min-height: 170px;
    font-size: 0.92rem;
  }
}