/* Final mobile navigation layer shared by all public pages. */
@media (max-width: 1100px) {
  body.nav-open {
    overflow: hidden !important;
  }

  .site-header {
    height: 64px !important;
    z-index: 1000 !important;
    overflow: visible !important;
  }

  .site-header .nav-wrap,
  .nav-wrap {
    position: relative !important;
    width: calc(100% - 24px) !important;
    max-width: none !important;
    height: 64px !important;
    gap: 10px !important;
    justify-content: space-between !important;
  }

  .site-header .brand,
  .brand {
    flex: 0 1 auto !important;
    min-width: 0 !important;
    display: flex !important;
    align-items: center !important;
  }

  .site-header .brand img,
  .brand img {
    height: 24px !important;
    max-width: 168px !important;
    object-fit: contain !important;
  }

  .site-header .menu-btn,
  .menu-btn {
    position: relative !important;
    z-index: 1002 !important;
    display: inline-flex !important;
    flex: 0 0 42px !important;
    width: 42px !important;
    height: 42px !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 0 !important;
    border: 1px solid rgba(125, 183, 255, .52) !important;
    border-radius: 0 !important;
    background: rgba(255, 255, 255, .94) !important;
    box-shadow: 0 10px 24px rgba(8, 28, 66, .08) !important;
  }

  .site-header .menu-btn span,
  .menu-btn span {
    display: block !important;
    width: 18px !important;
    height: 2px !important;
    margin: 3px auto !important;
    background: #071428 !important;
    transition: transform .18s ease, opacity .18s ease !important;
  }

  .site-header .menu-btn.is-open span:nth-child(1),
  .menu-btn.is-open span:nth-child(1) {
    transform: translateY(5px) rotate(45deg) !important;
  }

  .site-header .menu-btn.is-open span:nth-child(2),
  .menu-btn.is-open span:nth-child(2) {
    opacity: 0 !important;
  }

  .site-header .menu-btn.is-open span:nth-child(3),
  .menu-btn.is-open span:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg) !important;
  }

  .site-header .nav,
  .nav {
    position: fixed !important;
    left: 12px !important;
    right: 12px !important;
    top: 72px !important;
    bottom: auto !important;
    display: none !important;
    max-height: calc(100vh - 88px) !important;
    overflow-y: auto !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 6px !important;
    padding: 12px !important;
    border: 1px solid rgba(125, 183, 255, .42) !important;
    border-radius: 0 !important;
    background:
      linear-gradient(135deg, rgba(255,255,255,.98), rgba(244,249,255,.96)) !important;
    box-shadow: 0 28px 70px rgba(7, 20, 40, .22) !important;
    z-index: 1001 !important;
    font-size: 15px !important;
  }

  .site-header .nav.open,
  .nav.open {
    display: flex !important;
  }

  .site-header .nav > a,
  .site-header .nav-parent,
  .nav > a,
  .nav-parent {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    min-height: 46px !important;
    width: 100% !important;
    padding: 0 14px !important;
    border: 1px solid rgba(125, 183, 255, .24) !important;
    border-radius: 0 !important;
    background: #fff !important;
    color: #101827 !important;
    line-height: 1.2 !important;
  }

  .site-header .nav > a.active,
  .site-header .nav-parent.active,
  .nav > a.active,
  .nav-parent.active {
    color: #1557ff !important;
    border-color: rgba(21, 87, 255, .36) !important;
    background: linear-gradient(90deg, rgba(21,87,255,.08), rgba(255,255,255,.96)) !important;
  }

  .site-header .nav-group,
  .nav-group {
    display: block !important;
    width: 100% !important;
    position: static !important;
  }

  .site-header .nav-parent::after,
  .nav-parent::after {
    flex: 0 0 auto !important;
    margin-left: 10px !important;
  }

  .site-header .submenu,
  .submenu {
    position: static !important;
    left: auto !important;
    top: auto !important;
    width: 100% !important;
    max-width: none !important;
    margin: 6px 0 2px !important;
    padding: 8px !important;
    border: 1px solid rgba(125, 183, 255, .22) !important;
    border-radius: 0 !important;
    background: rgba(245, 249, 255, .96) !important;
    box-shadow: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
  }

  .site-header .submenu::before,
  .submenu::before {
    display: none !important;
  }

  .site-header .nav .submenu a,
  .nav .submenu a {
    min-height: 50px !important;
    padding: 8px 10px !important;
    grid-template-columns: 30px minmax(0, 1fr) 16px !important;
    border-radius: 0 !important;
    background: #fff !important;
  }

  .site-header .nav .submenu a span,
  .nav .submenu a span {
    max-width: none !important;
  }

  .site-header .nav-cta,
  .site-header .btn.nav-cta,
  .site-header .nav-wrap > .btn.primary,
  .nav-wrap > .btn.primary {
    display: none !important;
  }

  .site-header .nav::after,
  .nav::after {
    content: "预约交流";
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    margin-top: 4px;
    color: #fff;
    border: 1px solid #1557ff;
    background: linear-gradient(90deg, #1557ff, #0f4ee6 72%, #ff7900);
    font-weight: 900;
  }
}

@media (max-width: 520px) {
  .site-header .brand img,
  .brand img {
    height: 22px !important;
    max-width: 142px !important;
  }

  .site-header .nav,
  .nav {
    left: 10px !important;
    right: 10px !important;
    top: 68px !important;
    padding: 10px !important;
  }
}