@media (max-width: 1050px) {
  .nav { gap: 16px; }
  .nav a:not(.button) { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .gallery-strip { grid-template-columns: 1.2fr .8fr; }
  .gallery-strip__item:last-child { display: none; }
}

@media (max-width: 800px) {
  :root { --header-height: 72px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section, .contact { padding: 78px 0; }
  .section__head { margin-bottom: 36px; }
  .section__head--split { align-items: start; flex-direction: column; gap: 18px; }
  .brand { width: 192px; }
  .menu-button { display: grid; }
  .nav { position: fixed; inset: var(--header-height) 0 auto; padding: 24px 20px 34px; display: none; flex-direction: column; align-items: stretch; color: var(--color-ink); background: rgba(255,255,255,.98); box-shadow: var(--shadow-lg); }
  .nav.is-open { display: flex; }
  .nav a:not(.button) { display: block; padding: 9px 0; font-size: 18px; }
  .nav .button { margin-top: 8px; }
  .hero { min-height: 820px; }
  .hero__media { object-position: 61% center; }
  .hero__steam { left: 43%; top: 57%; width: 54%; height: 11%; }
  .hero::after { background: linear-gradient(90deg, rgba(4,18,49,.94), rgba(4,18,49,.46)), linear-gradient(0deg, rgba(4,18,49,.92) 0%, transparent 68%); }
  .hero__content { padding: 138px 0 38px; }
  .hero__copy .lead { font-size: 17px; }
  .hero__copy .actions { align-items: stretch; flex-direction: column; }
  .hero__copy .button { width: 100%; }
  .hero__stats { margin-top: 46px; }
  .stat { padding: 20px 12px; }
  .stat__value { font-size: 31px; }
  .stat__label { font-size: 11px; }
  .about-grid, .benefits-layout, .estimate-layout, .contact-layout { grid-template-columns: 1fr; gap: 42px; }
  .about-media, .benefits-layout__intro { position: relative; top: auto; }
  .about-media, .about-media img { min-height: 460px; }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 285px; }
  .project-card, .projects-grid .project-card:first-child, .projects-grid .project-card:not(:first-child) { min-height: 460px; }
  .projects-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-strip { grid-template-columns: 1fr; }
  .gallery-strip__item { min-height: 380px; }
  .gallery-strip__item:nth-child(n+2) { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .field--wide { grid-column: auto; }
  .footer__grid { grid-template-columns: 1fr; gap: 34px; }
  .footer__bottom { align-items: flex-start; flex-direction: column; }
  .mobile-cta { position: fixed; z-index: 90; inset: auto 12px 12px; padding: 8px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; background: rgba(4,21,47,.94); box-shadow: var(--shadow-lg); backdrop-filter: blur(16px); }
  .mobile-cta .button { min-height: 48px; padding: 0 14px; font-size: 13px; }
  .site-footer { padding-bottom: 110px; }
}

@media (max-width: 520px) {
  .display { font-size: 46px; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .hero__stats .stat:last-child { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,.16); border-left: 0; }
  .process-grid { grid-template-columns: 1fr; }
  .calculator__result { align-items: flex-start; flex-direction: column; }
  .calculator__result .button { width: 100%; }
}