@media (max-width: 980px) {
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto auto;
    justify-content: space-between;
    gap: 12px;
  }

  .brand {
    max-width: calc(100vw - 146px);
  }

  .brand__mark {
    width: 38px;
  }

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

  .language-switcher__button {
    min-width: 58px;
    height: 44px;
  }

  .site-nav {
    position: fixed;
    inset: 76px 18px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px;
    border: 1px solid rgba(var(--rgb-gold), 0.44);
    border-radius: var(--radius-sm);
    background:
      linear-gradient(160deg, rgba(16, 47, 85, 0.98), rgba(79, 109, 172, 0.98)),
      var(--color-blue-deep);
    box-shadow: var(--shadow-soft);
  }

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

  .site-nav a {
    padding: 14px;
  }

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

  .split,
  .split--reverse,
  .cta-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .proof-strip__grid,
  .product-examples,
  .process-grid,
  .quality-grid,
  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .visual-stack {
    order: -1;
  }

  .hero-logo__main {
    font-size: 4.8rem;
    letter-spacing: 0.16em;
  }

  .hero-logo__sub {
    width: min(520px, 100%);
    font-size: 1rem;
    letter-spacing: 0.42em;
  }
}

@media (max-width: 680px) {
  :root {
    --container: calc(100vw - 28px);
  }

  .site-header {
    padding: 12px 14px;
  }

  .brand__wordmark {
    display: none;
  }

  .language-switcher__code {
    display: none;
  }

  .language-switcher__button {
    min-width: 44px;
    padding: 0;
  }

  .hero {
    min-height: 720px;
    padding: 126px 0 70px;
  }

  .hero::before {
    right: -52px;
    bottom: 120px;
    width: 300px;
    opacity: 0.22;
  }

  .hero-logo {
    gap: 8px;
    margin-bottom: 16px;
  }

  .hero-logo__main {
    font-size: 3.05rem;
    letter-spacing: 0.1em;
    line-height: 0.92;
  }

  .hero-logo__sub {
    grid-template-columns: minmax(18px, 1fr) auto minmax(18px, 1fr);
    gap: 10px;
    font-size: 0.78rem;
    letter-spacing: 0.28em;
  }

  .hero__slogan {
    max-width: 330px;
    font-size: 1.32rem;
    color: var(--color-gold-bright);
  }

  .hero__text {
    max-width: 340px;
    font-size: 1.02rem;
  }

  .hero__actions,
  .button {
    width: 100%;
  }

  .proof-strip {
    margin-top: 0;
  }

  .proof-strip__grid,
  .product-examples,
  .process-grid,
  .quality-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 70px 0;
  }

  .section--intro {
    padding-top: 70px;
  }

  .product-stage {
    min-height: 460px;
  }

  .product-stage::before {
    inset: 24px;
  }

  .label-preview {
    right: 18px;
    bottom: 18px;
  }

  .visual-note {
    position: static;
    width: 100%;
    margin-top: 14px;
  }

  .cta-section {
    padding: 74px 0;
  }

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

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

@media (max-width: 520px) {
  .site-header {
    width: min(100%, 390px);
  }

  .container {
    width: min(360px, calc(100vw - 28px));
    margin-left: 14px;
    margin-right: auto;
  }

  .hero__slogan,
  .hero__text {
    max-width: 100%;
  }

  .hero-logo__main {
    font-size: 2.34rem;
    letter-spacing: 0.065em;
  }

  .hero-logo__sub {
    font-size: 0.72rem;
    letter-spacing: 0.18em;
  }
}