@media (max-width: 980px) {
  .nav-links,
  .nav-action {
    display: none;
  }

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

  .site-header.menu-open .nav-links {
    position: fixed;
    inset: 82px var(--gutter) auto var(--gutter);
    display: grid;
    gap: 0;
    padding: var(--space-3);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: rgba(11, 13, 15, 0.96);
    box-shadow: var(--shadow-soft);
  }

  .site-header.menu-open .nav-links a {
    padding: 0.95rem 0.7rem;
    border-bottom: 1px solid var(--color-line);
  }

  .site-header.menu-open .nav-links a:last-child {
    border-bottom: 0;
  }

  .hero-inner,
  .split,
  .grid-2,
  .grid-3,
  .keyword-grid,
  .image-rail,
  .footer-grid,
  .cta-panel,
  .project-row {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    padding-left: 0;
    border-left: 0;
  }

  .image-tile:nth-child(2) {
    margin-top: 0;
  }

  .proof-strip,
  .sector-band,
  .keyword-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-step {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .method-step p {
    grid-column: 2;
  }

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

@media (min-width: 761px) and (max-width: 980px) {
  .nav-links {
    display: flex;
    gap: 0.72rem;
    font-size: 0.72rem;
  }

  .menu-toggle {
    display: none;
  }

  .brand span {
    font-size: 0.76rem;
  }

  .language-switch {
    font-size: 0.66rem;
  }
}

@media (max-width: 760px) {
  .nav-links,
  .nav-action {
    display: none;
  }

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

  .site-header.menu-open .nav-links {
    position: fixed;
    inset: 82px var(--gutter) auto var(--gutter);
    display: grid;
    gap: 0;
    padding: var(--space-3);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: rgba(11, 13, 15, 0.96);
    box-shadow: var(--shadow-soft);
  }

  .site-header.menu-open .nav-links a {
    padding: 0.95rem 0.7rem;
    border-bottom: 1px solid var(--color-line);
  }

  .site-header.menu-open .nav-links a:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 1.1rem;
  }

  .nav-bar {
    min-height: 72px;
  }

  .brand span {
    font-size: 0.82rem;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .language-switch {
    gap: 0.2rem;
    padding: 0.22rem;
  }

  .language-switch a,
  .language-switch span,
  .language-switch button {
    width: 1.7rem;
    height: 1.7rem;
    flex-basis: 1.7rem;
  }

  .hero {
    min-height: 86vh;
    padding: 7.25rem 0 3.5rem;
    background-position: 58% center;
  }

  h1 {
    max-width: 12ch;
    font-size: clamp(2.75rem, 13vw, 4.2rem);
  }

  .hero h1 {
    max-width: 10ch;
    font-size: clamp(3rem, 16vw, 4.7rem);
  }

  .page-hero {
    min-height: 52vh;
    padding: 7rem 0 3.5rem;
  }

  .page-hero h1 {
    max-width: 12ch;
    font-size: clamp(2.55rem, 12vw, 4rem);
  }

  .proof-strip,
  .sector-band,
  .keyword-grid,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .proof-strip li {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .proof-strip li:last-child {
    border-bottom: 0;
  }

  .method-step {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .method-step p {
    grid-column: auto;
  }

  .media-frame {
    min-height: 320px;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}