@media (max-width: 1180px) {
  .episode-grid,
  .stage-track,
  .roadmap-stage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 940px) {
  :root {
    --nav-height: 70px;
    --space-9: 4.5rem;
    --space-8: 3.5rem;
  }

  body {
    font-size: 16px;
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav {
    position: fixed;
    inset: var(--nav-height) 0 auto;
    display: grid;
    max-height: calc(100svh - var(--nav-height));
    overflow: auto;
    transform: translateY(-1rem);
    visibility: hidden;
    opacity: 0;
    border-bottom: 1px solid var(--color-line);
    background: rgba(5, 9, 20, 0.98);
    padding: var(--space-5);
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .primary-nav.is-open {
    transform: translateY(0);
    visibility: visible;
    opacity: 1;
  }

  .primary-nav a {
    padding: 0.65rem 0;
    font-size: 1rem;
  }

  .primary-nav .button {
    width: max-content;
    margin-top: var(--space-2);
  }

  .hero {
    min-height: 840px;
    background-position: center;
  }

  .hero::after {
    top: 48%;
    right: -22rem;
    width: 640px;
  }

  .grid-4,
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split-section,
  .episode-story {
    grid-template-columns: 1fr;
  }

  .episode-meta {
    position: static;
  }

  .detail-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .container,
  .container-wide {
    width: min(100% - 1.2rem, var(--container));
  }

  .section {
    padding: var(--space-8) 0;
  }

  .hero {
    min-height: 760px;
    padding-bottom: var(--space-7);
  }

  .hero-actions,
  .button-row,
  .newsletter-form,
  .inline-form,
  .roadmap-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button,
  .button-secondary,
  .button-ghost {
    width: 100%;
  }

  .episode-grid,
  .stage-track,
  .roadmap-stage-grid,
  .grid-4,
  .grid-3,
  .grid-2,
  .footer-grid,
  .contact-form {
    grid-template-columns: 1fr;
  }

  .episode-panel {
    min-height: auto;
  }

  .episode-details {
    grid-template-rows: 1fr;
  }

  .stage::after {
    display: none;
  }

  .workstream {
    grid-template-columns: 1fr;
    border-radius: var(--radius-md);
  }

  .workstream strong,
  .workstream span {
    padding: 0.75rem 1rem;
  }

  .architecture-preview,
  .roadmap-board,
  .form-panel,
  .cta-band,
  .statement-card {
    padding: var(--space-5);
  }

  .media-placeholder {
    min-height: 250px;
  }

  .media-image-card,
  .media-image-card img {
    height: 300px;
  }

  .logo-pill,
  .impact-item {
    min-height: auto;
  }

  .collaborator-cloud {
    grid-template-columns: 1fr;
  }

  .collaborator-card.is-featured {
    grid-column: auto;
  }

  .footer-bottom {
    display: grid;
  }
}

@media (max-width: 420px) {
  .wordmark {
    font-size: 1rem;
  }

  .wordmark-mark {
    width: 34px;
    height: 34px;
  }

  .mission-strip span {
    width: 100%;
  }
}

@media (min-width: 1600px) {
  body {
    font-size: 18px;
  }

  .hero-content {
    width: min(100%, 960px);
  }
}