@media (max-width: 1100px) {
  .hero__grid,
  .products-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__visual {
    min-height: 620px;
  }
}

@media (max-width: 860px) {
  :root {
    --section-space: 72px;
  }

  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    display: none;
    width: 100%;
    padding: 24px 20px;
    flex-direction: column;
    align-items: stretch;
    background: rgba(13, 13, 13, 0.98);
    border-bottom: 1px solid var(--color-line);
  }

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

  .nav a {
    padding: 10px 0;
  }

  .language-switcher {
    margin-left: auto;
  }

  .hero {
    min-height: auto;
    padding-top: 64px;
  }

  .hero__grid,
  .grid-2,
  .grid-3,
  .questionnaires-grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    min-height: 620px;
    max-height: 760px;
  }

  .about-card,
  .about-card__image {
    min-height: 620px;
  }

  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero p {
    font-size: 17px;
  }

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

  .hero__actions,
  .section-actions,
  .product-card__actions,
  .social-row {
    flex-direction: column;
  }

  .questionnaire__summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .questionnaire__toggle {
    width: 100%;
  }

  .questionnaire-step__fields {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .hero__visual {
    min-height: 460px;
    max-height: 660px;
  }

  .about-card,
  .about-card__image {
    min-height: 520px;
  }

  .about-card__caption {
    position: static;
    margin: -1px 0 0;
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 0;
  }

  .hero__stat {
    left: 18px;
    right: 18px;
    bottom: 18px;
    width: auto;
    padding: 18px;
  }

  .text-block,
  .placeholder,
  .payment-box,
  .about-card__caption,
  .product-card,
  .questionnaire {
    padding: 22px;
  }

  .step {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* Audit hardening: mobile overflow, touch targets and dialogs */
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

.hero__grid,
.grid-2,
.grid-3,
.products-grid,
.questionnaires-grid,
.product-card,
.questionnaire,
.questionnaire-step,
.field,
.payment-box,
.section__head,
.about-card,
.site-footer__inner {
  min-width: 0;
}

h1,
h2,
h3,
p,
a,
button,
summary,
label,
span,
strong,
small,
legend {
  overflow-wrap: anywhere;
}

input,
select,
textarea {
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.btn,
.nav-toggle,
.language-switcher__button,
.questionnaire__toggle {
  min-height: 44px;
}

.payment-confirmation {
  width: min(620px, calc(100vw - 28px));
  max-width: calc(100vw - 28px);
  max-height: min(90dvh, 760px);
  padding: 0;
  overflow: auto;
}

.payment-confirmation__content {
  min-width: 0;
}

.legal__content {
  min-width: 0;
}

.legal__content a:not(.btn) {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-note {
  padding: 16px 18px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
}

@media (max-width: 620px) {
  .site-header__inner {
    gap: 10px;
  }

  .logo {
    min-width: 0;
  }

  .logo__mark {
    font-size: 24px;
  }

  .logo__caption {
    letter-spacing: 1.2px;
  }

  .language-switcher__button {
    min-width: 38px;
    padding-inline: 8px;
  }

  .hero h1 {
    font-size: clamp(34px, 10.5vw, 42px);
    line-height: 1;
  }

  .hero__visual {
    min-height: 0;
    height: auto;
    aspect-ratio: 4 / 5;
  }

  .hero__stat {
    max-width: calc(100% - 36px);
  }

  .questionnaire-step__number {
    flex: 0 0 auto;
  }

  .questionnaire-step summary,
  .questionnaire__summary {
    min-width: 0;
  }

  .option-control {
    align-items: flex-start;
  }

  .payment-confirmation__content {
    padding: 24px 20px;
  }
}

@media (max-width: 390px) {
  .container {
    width: min(100% - 22px, var(--container));
  }

  .site-header__inner {
    gap: 8px;
  }

  .logo__caption {
    display: none;
  }

  .logo__mark {
    font-size: 22px;
  }

  .language-switcher__button {
    min-width: 34px;
    padding-inline: 6px;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .text-block,
  .placeholder,
  .payment-box,
  .about-card__caption,
  .product-card,
  .questionnaire {
    padding: 18px;
  }

  .hero__stat {
    left: 12px;
    right: 12px;
    bottom: 12px;
    max-width: calc(100% - 24px);
    padding: 15px;
  }
}