@media (max-width: 1100px) {
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-copy h1 { font-size: clamp(38px, 5vw, 54px); }
  .honor-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px 48px; }
  .footer-product-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-callback-form { max-width: none; }
  .footer-hotline a { font-size: 34px; }
}

@media (max-width: 1024px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 12px 24px 18px;
    border-bottom: 1px solid var(--line);
    background: var(--white);
    color: var(--ink);
    box-shadow: 0 20px 30px rgba(16, 24, 32, .08);
  }
  .main-nav.is-open { display: flex; }
  .main-nav > a, .nav-mega > a { width: 100%; padding: 9px 0; }
  .nav-mega { width: 100%; }
  .mega-panel { display: none !important; }
  .menu-toggle { display: block; }
  .phone { display: none; }
  .header-actions .button { display: none; }
  .site-header--overlay .main-nav { color: var(--ink); }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-visual { max-width: 720px; }
  .stats-card { margin-top: -26px; }
  .product-detail { grid-template-columns: 1fr; gap: 26px; }
  .product-detail-visual img { height: 400px; }
  .detail-columns { grid-template-columns: 1fr; }
  .case-detail-columns { margin-top: 18px; }
  .contact-grid { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .news-feature-layout { grid-template-columns: 1fr; }
  .news-feature-wrap { min-height: 480px; }
  .news-feature { min-height: 480px; }
  .news-side { display: grid; grid-template-columns: repeat(3, 1fr); }
  .faq-block { grid-template-columns: 1fr; gap: 24px; }
  .industry-layout { grid-template-columns: 1fr; gap: 26px; min-height: 0; padding-top: 44px; padding-bottom: 44px; }
  .industry-panels { min-height: 300px; }
  .industry-tabs { display: grid; grid-template-columns: 1fr 1fr; }
  .industry-tab { padding: 14px 8px; font-size: 14px; }
  .industry-tab:nth-child(2) { border-top: 1px solid rgba(255,255,255,.18); }
}

@media (max-width: 760px) {
  .shell { width: calc(100% - 32px); }
  .section { padding: 48px 0; }
  .site-header--overlay .header-actions .button-light { display: none; }
  .hero-shell { min-height: 100vh; min-height: 100svh; padding-top: 104px; padding-bottom: 108px; }
  .hero-scrim { background: linear-gradient(180deg, rgba(4,18,30,.72) 0%, rgba(4,18,30,.48) 38%, rgba(4,18,30,.84) 100%); }
  .hero-copy h1 { margin: 16px 0 12px; font-size: 34px; }
  .hero-copy p { max-width: 100%; font-size: 13px; line-height: 1.6; }
  .hero-copy .tag-row { margin-top: 12px; }
  .hero-actions { margin-top: 18px; }
  .hero-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 22px; padding-top: 13px; }
  .hero-metrics small { font-size: 9px; letter-spacing: .06em; }
  .hero-metrics strong { font-size: 12px; line-height: 1.4; }
  .hero-controls { bottom: 14px; width: calc(100% - 32px); }
  .section-head { display: block; }
  .section-head .text-link { display: inline-block; margin-top: 12px; }
  .product-showcase-head { margin-bottom: 20px; }
  .product-tabs { justify-content: flex-start; }
  .product-tab { padding: 12px 20px; font-size: 13px; }
  .showcase-card { padding: 18px 14px 16px; }
  .showcase-card img, .showcase-card-placeholder { height: 160px; }
  .showcase-card-copy h3 { font-size: 14px; }
  .category-grid, .product-grid, .case-grid { grid-template-columns: 1fr; }
  .category-card, .category-copy { min-height: 250px; }
  .case-card, .case-copy { min-height: 300px; }
  .about-grid { gap: 22px; }
  .about-visual > img, .about-img { height: 290px; }
  .about-media { height: 290px; }
  .stats-card { grid-template-columns: 1fr 1fr; margin-left: 10px; margin-right: 10px; padding: 12px; }
  .stat-item { padding-left: 8px; }
  .stat-value { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding-top: 38px; padding-bottom: 30px; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-bottom: 5px; }
  .footer-product-links { grid-template-columns: 1fr 1fr; gap: 9px 20px; }
  .footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 20px; }
  .footer-links h4 { grid-column: 1 / -1; margin-bottom: 0; }
  .footer-links a + a { margin-top: 0; }
  .footer-callback h4 { font-size: 19px; }
  .footer-callback-form { max-width: none; }
  .footer-hotline a { font-size: 30px; }
  .back-to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
  .page-hero-copy { padding-top: 52px; padding-bottom: 46px; }
  .page-hero--compact .page-hero-copy { padding-top: 28px; padding-bottom: 32px; }
  .page-hero h1 { font-size: 36px; }
  .info-strip { grid-template-columns: 1fr 1fr; gap: 18px; }
  .spec-grid { grid-template-columns: 1fr 1fr; }
  .product-detail-visual img { height: 290px; }
  .product-detail-copy h1 { font-size: 34px; }
  .news-section-head h2 { font-size: 28px; }
  .news-feature-wrap, .news-feature { min-height: 420px; }
  .news-feature-copy { right: 0; bottom: 18px; padding: 0 18px; }
  .news-feature-copy h3 { font-size: 23px; }
  .news-feature-date { top: 18px; right: auto; left: 18px; bottom: auto; }
  .news-feature-date strong { font-size: 34px; }
  .news-feature-count { display: none; }
  .news-carousel-nav { top: 18px; right: 18px; }
  .news-side { grid-template-columns: 1fr; gap: 10px; }
  .news-side-item { padding: 18px; }
  .article-gallery { grid-template-columns: 1fr; }
  .article-gallery img { height: 220px; }
  .smart-banner img { height: 210px; }
  .proof-head { padding: 32px 18px 24px; text-align: left; }
  .honor-grid { gap: 12px; }
  .honor-card { padding: 12px; }
  .honor-card img, .honor-seal { height: 128px; }
  .honor-seal span { font-size: 28px; }
  .honor-card h3 { margin-top: 11px; font-size: 14px; }
  .faq-block { margin-top: 40px; padding-top: 34px; }
  .faq-item summary { padding: 14px 42px 14px 15px; font-size: 14px; }
  .industry-head { padding: 38px 18px 26px; text-align: left; }
  .industry-panels { min-height: 330px; }
  .industry-panel h2 { font-size: 34px; }
  .industry-tabs { grid-template-columns: 1fr; }
  .industry-tab { font-size: 15px; }
  .industry-tab:nth-child(2) { border-top: 0; }
  .news-row { display: block; }
  .news-row > span { display: block; margin-top: 12px; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
  .contact-grid { gap: 22px; }
  .consent { font-size: 12px; }
  .case-hero, .case-hero-copy { min-height: 380px; }
  .case-hero-copy { padding-top: 80px; padding-bottom: 30px; }
  .case-hero h1 { font-size: 34px; }
}

@media (max-width: 520px) {
  .product-cards { grid-template-columns: 1fr; }
  .showcase-card img, .showcase-card-placeholder { height: 200px; }
  .honor-grid { grid-template-columns: 1fr; }
  .footer-callback-form { display: grid; grid-template-columns: 1fr; }
  .footer-callback-form button { width: 100%; }
}