@media (max-width: 900px) {
  body.nav-open {
    overflow: hidden;
    overscroll-behavior: none;
  }

  .site-header {
    z-index: 1000;
    background: var(--paper);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .header-inner {
    position: relative;
    z-index: 2;
  }

  .menu-toggle {
    position: relative;
    z-index: 3;
    display: block;
    width: 48px;
    height: 48px;
    padding: 9px;
    color: var(--lif-navy, #15345d);
  }

  .menu-toggle span {
    width: 30px;
    height: 2px;
    margin: 6px 0;
    background: currentColor;
    transform-origin: center;
    transition: transform .22s ease, opacity .18s ease;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .nav {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    padding: clamp(112px, 16vh, 150px) 28px max(28px, env(safe-area-inset-bottom));
    background: var(--paper);
    color: var(--lif-navy, #15345d);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    font-size: clamp(32px, 6vw, 52px);
  }

  .nav.open {
    display: flex;
  }

  .nav a:not(.nav-cta) {
    width: 100%;
    min-height: 78px;
    padding: 18px 8px;
    display: flex;
    align-items: center;
    gap: 20px;
    border-bottom: 1px solid color-mix(in srgb, var(--lif-navy, #15345d) 18%, transparent);
    color: var(--lif-navy, #15345d);
    font-size: inherit;
    line-height: 1.05;
    letter-spacing: -.035em;
    font-weight: 560;
  }

  .nav a:not(.nav-cta)::after {
    content: "→";
    position: static;
    width: auto !important;
    height: auto;
    margin-left: auto;
    background: none;
    color: currentColor;
    font-size: .8em;
    line-height: 1;
    transition: transform .18s ease;
  }

  .nav a:not(.nav-cta):hover::after,
  .nav a:not(.nav-cta):focus-visible::after {
    width: auto !important;
    transform: translateX(4px);
  }

  .nav > a:first-child {
    color: var(--accessible-accent);
  }

  .nav .lang {
    color: var(--lif-navy, #15345d);
    font-size: inherit;
    letter-spacing: -.035em;
    font-weight: 560;
  }

  .nav-cta {
    width: 100%;
    min-height: 72px;
    margin-top: auto;
    padding: 0 26px;
    border: 0;
    border-radius: 8px;
    background: var(--lif-navy, #15345d);
    color: var(--white);
    justify-content: center;
    gap: 18px;
    font-size: clamp(24px, 4.5vw, 34px);
    line-height: 1;
    letter-spacing: -.02em;
    font-weight: 760;
  }

  .nav-cta::after {
    content: "→";
    color: var(--accent);
    font-size: 1.1em;
    line-height: 1;
  }
}

@media (max-width: 600px) {
  .nav {
    padding-left: 22px;
    padding-right: 22px;
  }

  .nav a:not(.nav-cta) {
    min-height: 72px;
    padding-left: 6px;
    padding-right: 6px;
  }

  .nav-cta {
    min-height: 68px;
  }
}