@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    inset: 0 -8% 0 34%;
  }

  .hero-photo img {
    object-position: 70% 50%;
    transform: scale(1.05) translateX(-10%);
  }

  .signature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .signature-intro {
    grid-column: 1 / -1;
  }

  .process-grid,
  .impact-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .process-card {
    min-height: 330px;
  }

  .process-card h3 {
    margin-top: 70px;
  }

  .logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 820px) {
  :root {
    --header: 70px;
  }

  .container {
    width: min(calc(100% - 30px), var(--max));
  }

  .nav-toggle {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.03);
    color: var(--ink);
  }

  .nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 15px;
    left: 15px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(5, 7, 11, 0.97);
    box-shadow: var(--shadow);
  }

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

  .nav a {
    padding: 13px 14px;
  }

  .hero {
    min-height: 920px;
  }

  .hero-grid {
    min-height: 850px;
    align-items: end;
  }

  .hero-copy {
    padding: 90px 0 70px;
  }

  .hero-copy .display {
    max-width: 95%;
    font-size: clamp(3.2rem, 12vw, 5.6rem);
  }

  .hero-visual {
    inset: 0 -26% 30% 8%;
    opacity: 0.62;
  }

  .hero-photo img {
    object-position: 72% 46%;
    transform: scale(1.02) translateX(-12%);
  }

  .hero-photo::before {
    background:
      linear-gradient(90deg, rgba(5, 7, 11, 0.8), rgba(5, 7, 11, 0.16) 52%, transparent),
      linear-gradient(180deg, rgba(5, 7, 11, 0.1), rgba(5, 7, 11, 0.45) 70%, #05070b 100%);
  }

  .two-col,
  .intent-layout,
  .taichi-grid,
  .authority-grid,
  .footer-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

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

  .authority-photo,
  .taichi-image,
  .taichi-image img {
    min-height: 470px;
  }

  .authority-photo img {
    min-height: 470px;
  }

  .authority-stats,
  .diagnostic-choices {
    grid-template-columns: 1fr;
  }

  .system-map {
    width: min(100%, 700px);
    aspect-ratio: 1;
    padding: 0;
    border-radius: 28px;
  }

  .system-node small {
    max-width: 88%;
  }

  .system-detail {
    width: 48%;
  }

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

@media (max-width: 560px) {
  .display {
    font-size: clamp(2.9rem, 14vw, 4.5rem);
  }

  .section-title {
    font-size: clamp(2.25rem, 11vw, 3.7rem);
  }

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

  .button {
    width: 100%;
  }

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

  .signature-word {
    min-height: auto;
    padding: 16px 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

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

  .social-link {
    width: 30px;
    height: 30px;
  }

  .socials {
    gap: 18px;
  }

  .system-node {
    width: 19%;
    padding: 1.15%;
  }

  .system-node .node-code {
    margin-bottom: 0.28em;
  }

  .system-node strong {
    margin-bottom: 0;
  }

  .system-node small {
    display: none;
  }

  .system-center {
    width: 25%;
  }

  .system-center small {
    display: none;
  }

  .system-detail {
    width: 58%;
    padding: 14px;
  }

  .system-detail-tags {
    display: none;
  }

}