/* ============================================================
   高信新材料官网 · H5 / 平板响应式适配
   ============================================================ */

/* 超大屏 */
@media (min-width: 1600px) {
  .hero { height: 96vh; }
}

/* ≤ 1180px：统计六列降为三列 */
@media (max-width: 1180px) {
  .stats-grid { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .apps-grid { grid-template-columns: repeat(3, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .honor-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ≤ 1440px：隐藏 logo 英文副标题，保证导航空间 */
@media (max-width: 1440px) {
  .logo-text span { display: none; }
}

/* ≤ 1199px：导航收起为汉堡菜单，避免横向溢出 */
@media (max-width: 1199px) {
  .main-nav { display: none; }
  .mobile-toggle { display: flex; margin-left: auto; }
  .logo img { height: 44px; }
  .logo-text span { display: none; }
}

/* ≤ 1024px：切换为汉堡菜单 */
@media (max-width: 1024px) {
  :root { --header-h: 66px; }
  .main-nav { display: none; }
  .mobile-toggle { display: flex; margin-left: auto; }
  .header-inner { gap: 16px; }
  .logo img { height: 44px; }
  .logo-text strong { font-size: 15px; }
  .logo-text span { display: none; }

  .hero { height: 74vh; min-height: 480px; }
  .hero-arrow { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .about-media::before { display: none; }
  .about-badge { right: 14px; bottom: -20px; }

  .detail-grid { grid-template-columns: 1fr; gap: 36px; }
  .detail-media { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 38px; padding: 56px 0 40px; }

  .timeline::before { left: 9px; transform: none; }
  .tl-item, .tl-item:nth-child(even) { width: 100%; margin-left: 0; padding: 0 0 36px 38px; }
  .tl-dot, .tl-item:nth-child(even) .tl-dot { left: 0; right: auto; }

  .apps-detail-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

/* ≤ 768px：平板/大手机 */
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .container { padding: 0 16px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .videos-grid { grid-template-columns: 1fr; gap: 20px; }
  .news-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .apps-grid { grid-template-columns: repeat(2, 1fr); }

  .page-banner { height: 34vh; min-height: 250px; }

  .news-item { flex-wrap: wrap; gap: 16px; }
  .news-date { width: 68px; padding: 9px 4px; order: 1; }
  .news-thumb { width: 110px; order: 2; }
  .news-body { order: 3; flex-basis: 100%; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 26px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; padding: 48px 0 34px; }
  .footer-bottom .container { justify-content: center; text-align: center; }
  .modal-close { top: -12px; right: -6px; width: 40px; height: 40px; }
}

/* ≤ 640px：手机 */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .hero { height: 62vh; min-height: 420px; }
  .hero-content { align-items: center; text-align: center; }
  .hero-eyebrow { letter-spacing: .18em; }
  .hero-actions .btn { padding: 12px 26px; font-size: 14px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }
  .products-grid { grid-template-columns: 1fr; }
  .about-points { grid-template-columns: 1fr; }
  .honor-item { flex-basis: 200px; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 8px 18px; font-size: 13.5px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .apps-detail-grid { grid-template-columns: 1fr; }
  .sec-head { margin-bottom: 40px; }
  .cta-band { padding: 60px 20px; }
  .back-top { right: 16px; bottom: 20px; }
  .video-play { width: 54px; height: 54px; }
}

/* 触摸设备：禁用 3D 倾斜由 JS 判断，这里去掉 hover 位移残留 */
@media (hover: none) {
  .product-card:hover, .news-item:hover, .honor-item:hover { transform: none; }
}