@media (max-width: 1080px) {
  .site-header__inner {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .primary-navigation {
    position: fixed;
    top: 78px;
    right: var(--container-padding);
    left: var(--container-padding);
    display: grid;
    gap: 0;
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(248, 247, 242, 0.98);
    box-shadow: var(--shadow-floating);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition:
      opacity var(--transition-fast),
      transform var(--transition-fast);
  }

  .primary-navigation.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .primary-navigation a {
    padding: var(--space-4);
    border-radius: var(--radius-sm);
  }

  .primary-navigation a::after {
    display: none;
  }

  .primary-navigation a:hover,
  .primary-navigation a:focus-visible {
    background: var(--color-brand-aqua-soft);
  }

  .navigation-toggle {
    display: block;
  }

  .navigation-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .navigation-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .header-download {
    display: none;
  }

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

  .hero__content {
    max-width: 820px;
  }

  .hero__visual {
    min-height: 520px;
  }

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

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .faq-layout .section-heading {
    position: static;
    margin-bottom: var(--space-7);
  }

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

  .site-footer__top {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  :root {
    --container-padding: 1.25rem;
    --space-9: 4.5rem;
  }

  .site-header__inner {
    min-height: 70px;
  }

  .primary-navigation {
    top: 70px;
  }

  .brand__symbol {
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }

  .hero {
    padding-block: 4.5rem;
  }

  .hero__title {
    font-size: clamp(2.7rem, 14vw, 4.5rem);
  }

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

  .hero__actions .button {
    width: 100%;
  }

  .hero__visual {
    min-height: 420px;
  }

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

  .feature-card {
    min-height: 230px;
  }

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

  .contact-panel,
  .download-panel {
    padding: var(--space-6);
  }

  .store-buttons {
    grid-template-columns: 1fr;
  }

  .site-footer__navigation {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: var(--space-5);
  }
}

@media (max-width: 480px) {
  .brand__name {
    font-size: 1rem;
  }

  .hero__visual {
    min-height: 340px;
  }

  .hero__visual-brand {
    padding: var(--space-5);
  }

  .hero__visual-symbol {
    width: 104px;
    font-size: 4rem;
  }

  .section-title {
    font-size: clamp(2rem, 11vw, 3rem);
  }

  .feature-card {
    padding: var(--space-5);
  }

  .faq-item summary {
    padding-right: 3rem;
  }

  .contact-links strong {
    font-size: var(--font-size-base);
  }
}