:root {
  --nng-site-header-height: 52px;
}

@font-face {
  font-family: "iconfont";
  src: url("https://at.alicdn.com/t/font_2668178_gvizekc2vj.woff2?t=1627376597649") format("woff2");
}

.nn-header .iconfont {
  font-family: "iconfont" !important;
  font-size: 18px;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.nn-header .icon-discord::before { content: "\e604"; }
.nn-header .icon-doc::before { content: "\e603"; }
.nn-header .icon-download::before { content: "\e690"; }
.nn-header .icon-github::before { content: "\e616"; }

body {
  padding-top: var(--nng-site-header-height);
}

.nn-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  right: 0;
  left: 0;
  color: #fff;
  background: linear-gradient(135deg, #112d4e 0%, #171d41 100%);
  font-family: Roboto, "Trebuchet MS", sans-serif;
}

.nn-header *,
.nn-header *::before,
.nn-header *::after {
  box-sizing: border-box;
}

.nn-header-inner {
  position: relative;
  width: auto;
  padding: 0 12px;
  margin: 0 auto;
}

.nn-header .navbar {
  display: flex;
  align-items: stretch;
  min-height: var(--nng-site-header-height);
  background: transparent;
}

.nn-header .navbar-brand,
.nn-header .navbar-menu,
.nn-header .navbar-end {
  display: flex;
  align-items: stretch;
}

.nn-header .navbar-brand {
  flex-shrink: 0;
}

.nn-header .navbar-item {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
}

.nn-header a {
  color: #fff;
  text-decoration: none;
}

.nn-header a:hover {
  color: #3f72af;
}

.nn-header .navbar-item img.navbar-icon {
  display: block;
  width: 54px;
  max-width: 100%;
  height: 36px;
  max-height: 100%;
}

.nn-header i.iconfont {
  margin-right: 4px;
}

.nn-header .navbar-menu {
  flex-grow: 1;
  flex-shrink: 0;
}

.nn-header .navbar-start {
  display: flex;
  justify-content: flex-start;
  margin-right: auto;
}

.nn-header .navbar-end {
  justify-content: flex-end;
  margin-left: auto;
}

.nn-header a.btn-download {
  display: inline-block;
  padding: 5px 12px;
  color: #fff;
  border-radius: 4px;
  background: #3f72af;
}

.nn-header .navbar-burger {
  display: none;
  width: 3.25rem;
  height: 3.25rem;
  padding: 0.5rem 0.75rem;
  margin-left: auto;
  color: #3f72af;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nn-header .navbar-burger span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background-color: currentColor;
}

.nn-header .is-hidden-desktop {
  display: none;
}

#mdbook-sidebar {
  top: var(--nng-site-header-height);
}

#mdbook-menu-bar.sticky,
#mdbook-menu-bar-hover-placeholder:hover + #mdbook-menu-bar,
#mdbook-menu-bar:hover,
html.sidebar-visible #mdbook-menu-bar,
#mdbook-menu-bar-hover-placeholder {
  top: var(--nng-site-header-height) !important;
}

:target {
  scroll-margin-top: calc(var(--nng-site-header-height) + var(--menu-bar-height) + 0.5em);
}

@media print {
  .nn-header {
    display: none;
  }

  body {
    padding-top: 0;
  }
}

@media screen and (min-width: 769px) {
  .nn-header-inner { width: 720px; }
}

@media screen and (min-width: 1024px) {
  .nn-header-inner { width: 960px; }
}

@media screen and (min-width: 1216px) {
  .nn-header-inner { width: 1152px; }
}

@media screen and (min-width: 1408px) {
  .nn-header-inner { width: 1344px; }
}

@media screen and (max-width: 1023px) {
  .nn-header .navbar {
    flex-wrap: wrap;
  }

  .nn-header .navbar-burger {
    display: block;
  }

  .nn-header .navbar-menu {
    display: none;
    flex-basis: 100%;
    flex-grow: 0;
    flex-shrink: 0;
    padding: 0.5rem 0;
    background: #fff;
    box-shadow: 0 8px 16px rgb(10 10 10 / 10%);
  }

  .nn-header .navbar-menu.is-active {
    display: block;
  }

  .nn-header .navbar-start,
  .nn-header .navbar-end {
    display: block;
  }

  .nn-header .navbar-item {
    display: block;
    padding: 0.5rem 0.75rem;
  }

  .nn-header .navbar-menu a {
    color: #424242;
  }

  .nn-header .is-hidden-desktop {
    display: block;
  }

  .nn-header .is-hidden-touch {
    display: none;
  }
}