@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(19rem, 0.7fr);
    gap: var(--space-xl);
  }

  .problem-grid,
  .engagement-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .capability-card {
    min-height: 25rem;
  }

  .detail-section {
    grid-template-columns: 0.25fr 0.75fr 1fr;
    gap: var(--space-lg);
  }

  .industry-register {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 800px) {
  .js .nav-toggle {
    display: inline-flex;
  }

  .js .nav-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    padding: var(--space-md) max(1.5rem, calc((100vw - var(--container-width)) / 2));
    border-bottom: var(--line);
    background: var(--color-bg-secondary);
  }

  .js .nav-menu[data-open="true"] {
    display: grid;
    gap: var(--space-md);
  }

  .js .nav-links {
    display: grid;
    gap: 0;
  }

  .js .nav-links a {
    display: block;
    min-height: 3rem;
    padding-block: 0.75rem;
    border-bottom: var(--line);
  }

  .js .nav-menu .button {
    width: 100%;
  }

  .no-js .nav-shell {
    flex-wrap: wrap;
    padding-block: var(--space-sm);
  }

  .no-js .nav-menu,
  .no-js .nav-links {
    flex-wrap: wrap;
  }

  .hero-grid,
  .page-hero-grid,
  .experience-grid,
  .future-grid,
  .final-cta-inner,
  .page-cta-inner {
    grid-template-columns: 1fr;
  }

  .page-register {
    max-width: 34rem;
  }

  .hero-visual {
    max-width: 35rem;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .principle {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .detail-section {
    grid-template-columns: 4rem 1fr;
  }

  .detail-topics {
    grid-column: 2;
  }

  .service-block {
    grid-template-columns: 1fr;
  }

  .service-summary {
    min-height: 22rem;
    border-right: 0;
    border-bottom: var(--line);
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

  .contact-layout,
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .legal-nav {
    position: static;
  }

  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 639px) {
  :root {
    --header-height: 4.6rem;
  }

  .container {
    width: min(calc(100% - 2rem), var(--container-width));
  }

  .brand img {
    width: 10rem;
  }

  .hero {
    padding-block: 3.5rem 5rem;
  }

  .page-hero {
    padding-block: 3.5rem 4.5rem;
  }

  .page-hero h1 {
    font-size: clamp(2.8rem, 14vw, 4.6rem);
  }

  .hero h1 {
    font-size: clamp(2.8rem, 14vw, 4.6rem);
  }

  .hero-copy {
    font-size: 1.1rem;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .capability-line {
    line-height: 1.9;
  }

  .technical-figure {
    padding: var(--space-sm);
  }

  .problem-grid,
  .engagement-grid {
    grid-template-columns: 1fr;
  }

  .problem-item,
  .engagement-item {
    min-height: auto;
  }

  .item-number {
    margin-bottom: var(--space-lg);
  }

  .capability-card {
    min-height: 26rem;
  }

  .experience-row {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .detail-section {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .detail-topics {
    grid-column: auto;
  }

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

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-field-full,
  .form-privacy,
  .form-actions {
    grid-column: auto;
  }

  .form-actions,
  .form-actions .button {
    width: 100%;
  }

  .legal-definition > div {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .service-summary {
    min-height: 19rem;
  }

  .industry-register {
    grid-template-columns: 1fr;
  }

  .future-visual {
    order: 2;
  }

  .final-actions,
  .final-actions .button {
    width: 100%;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: auto;
  }

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