@media (max-width: 900px) {
  .hero {
    min-height: auto;
    padding: 80px 0;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .hero h1 {
    max-width: 720px;
    font-size: clamp(2.5rem, 8vw, 3.6rem);
  }

  .hero-description {
    max-width: 680px;
  }

  .hero-visual {
    max-width: 650px;
  }

  .hero-visual img {
    aspect-ratio: 16 / 10;
  }

  .about {
    padding: 85px 0;
  }

  .about-container {
    gap: 52px;
  }

  .about-intro {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 26px;
  }

  .about-heading {
    max-width: 720px;
  }

  .about-intro > p {
    max-width: 680px;
  }

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

  .about-card {
    min-height: auto;
  }

  .section-header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 28px;
    margin-bottom: 44px;
  }
  .research {
    padding: 85px 0;
  }

  .research-header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 26px;
    margin-bottom: 45px;
  }

  .research-header > p {
    max-width: 680px;
  }

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

  .research-card {
    min-height: 240px;
    padding: 28px;
  }

  .team {
    padding: 85px 0;
  }

  .team-header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 26px;
    margin-bottom: 45px;
  }

  .team-header > p {
    max-width: 680px;
  }

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

  .team-card {
    min-height: auto;
    padding: 28px;
  }

  .news {
    padding: 85px 0;
  }

  .news-header {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 26px;

    margin-bottom: 45px;
  }

  .news-header > p {
    max-width: 680px;
  }

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

  .news-card:last-child {
    grid-column: 1 / -1;
  }

  .news-card:last-child {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
  }

  .news-card:last-child .news-image {
    height: 100%;
    aspect-ratio: auto;
  }

  .contact {
    padding: 85px 0;
  }

  .contact-header {
    grid-template-columns: 1fr;
    align-items: start;

    gap: 26px;

    margin-bottom: 45px;
  }

  .contact-header > p {
    max-width: 680px;
  }

  .contact-panel {
    grid-template-columns: 1fr;
  }

  .contact-info {
    padding: 34px;
  }

  .contact-form {
    padding: 34px;
  }

  .site-footer {
    padding-top: 70px;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 55px;
  }

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

  .header-container {
    min-height: 72px;
  }

  .header-logo img {
    height: 43px;
  }

  .menu-toggle {
    display: block;

    position: relative;

    z-index: 1002;
  }

  .main-nav {
    position: absolute;

    top: 72px;
    left: 0;

    display: flex;
    flex-direction: column;
    align-items: stretch;

    width: 100%;

    gap: 0;

    padding: 14px 20px 24px;

    border-top: 1px solid rgba(43, 58, 71, 0.08);
    border-bottom: 1px solid rgba(43, 58, 71, 0.08);

    background: rgba(255, 255, 255, 0.98);

    box-shadow: 0 18px 35px rgba(43, 58, 71, 0.08);

    opacity: 0;
    visibility: hidden;

    transform: translateY(-12px);

    transition:
      opacity 0.25s ease,
      transform 0.25s ease,
      visibility 0.25s ease;
  }

  .main-nav.is-open {
    opacity: 1;
    visibility: visible;

    transform: translateY(0);
  }

  .main-nav a {
    padding: 15px 4px;

    border-bottom: 1px solid rgba(43, 58, 71, 0.08);

    font-size: 0.95rem;
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav .nav-contact {
    margin-top: 14px;

    border-bottom: 0;

    text-align: center;
  }

  .menu-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  html {
    scroll-padding-top: 72px;
  }

  .hero {
    padding-top: 142px;
  }
  .team {
    padding: 85px 0;
  }

  .team-header {
    grid-template-columns: 1fr;
    align-items: start;

    gap: 26px;

    margin-bottom: 45px;
  }

  .team-header > p {
    max-width: 680px;
  }

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

  .team-card {
    min-height: 220px;
    padding: 28px;
  }

  .profile-modal {
    padding: 24px;
  }

  .profile-modal-dialog {
    max-height: 88vh;
  }

  .profile-modal-content {
    padding: 48px 42px;
  }
}