/* Responsive navigation and mobile presentation polish */
.nowrap { white-space: nowrap; }

@media (max-width: 900px) {
  .site-header,
  .site-header.scrolled {
    background: rgba(10, 37, 29, .98);
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }
  .nav-wrap { position: relative; }
  .nav-toggle { position: relative; z-index: 3; width: 44px; height: 44px; border-radius: 50%; transition: background .2s; }
  .nav-toggle:hover, .nav-toggle:focus-visible { background: rgba(255, 255, 255, .09); }
  .nav-toggle span { transition: transform .25s, opacity .2s; transform-origin: center; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-menu { position: fixed; top: 84px; left: 0; right: 0; bottom: 0; inset-block-end: 0; width: auto; height: auto; min-height: 0; padding: 34px 24px calc(34px + env(safe-area-inset-bottom)); align-items: center; justify-content: flex-start; overflow-y: auto; overscroll-behavior: contain; background: linear-gradient(180deg, #0a251d 0%, #113b2f 100%); box-shadow: 0 20px 40px rgba(0, 0, 0, .28); transform: translateX(105%); visibility: hidden; opacity: 0; transition: transform .3s ease, opacity .2s ease, visibility .3s; }
  .nav-menu.open { transform: translateX(0); visibility: visible; opacity: 1; }
  .nav-menu a { width: min(100%, 420px); padding: 10px 18px; text-align: center; border-bottom: 1px solid rgba(255, 255, 255, .09); font-size: 18px; }
  .nav-menu .nav-cta { margin-top: 8px; padding: 13px 20px; border: 1px solid rgba(255, 255, 255, .45); background: rgba(255, 255, 255, .06); }
}

@media (max-width: 620px) {
  body { padding-bottom: calc(56px + env(safe-area-inset-bottom)); }
  .nav-menu { top: 70px; height: auto; min-height: 0; padding-top: 24px; gap: 8px; }
  .nav-menu a { padding: 8px 16px; font-size: 17px; }
  .hero { min-height: 760px; padding: 105px 0 92px; background-position: 71% center; }
  .hero h1 { font-size: clamp(30px, 8.2vw, 34px); line-height: 1.19; letter-spacing: -.025em; }
  .hero h1 em { display: block; margin-top: 3px; }
  .hero p { line-height: 1.65; }
  .hero-actions { gap: 10px; }
  .hero-actions .btn { min-height: 54px; }
  .mobile-cta { min-height: 56px; padding-bottom: env(safe-area-inset-bottom); background: #0a251d; }
  .mobile-cta a { display: flex; align-items: center; justify-content: center; min-height: 56px; padding: 12px 10px; }
  footer { padding-bottom: 34px; }
  .case-study { margin-left: -2px; margin-right: -2px; }
}