.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 21px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}

@media (max-width: 850px) {
  nav { height: auto; }
  .nav-inner { min-height: 76px; height: auto; flex-wrap: wrap; }
  .logo { max-width: calc(100% - 58px); font-size: 17px; line-height: 1.2; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none !important;
    width: 100%;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 4px 0 20px;
  }
  .nav-links.is-open { display: flex !important; }
  .nav-links a { padding: 12px 0; border-top: 1px solid var(--line); }
  .nav-links .btn { margin-top: 10px; padding: 13px 18px; border-top: 0; }
  .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); }
}

@media (min-width: 851px) {
  .nav-links { display: flex !important; }
}