.header {
  max-width: 650px;
  padding: 120px 0 60px 0;
  margin: 0 auto;
  -webkit-background-size: cover;
  background-size: cover;
}
.header .title,
.header .logo {
  text-align: center;
  font-family: $title_font;
  text-decoration: none;
  font-size: 5rem;
  font-weight: bold;
  letter-spacing: 5px;
  line-height: 1.5;
}
.header .logo img {
  width: 120px;
  height: 120px;
  border-radius: 70px;
  transition: all 0.5s;
}
.header .logo img:hover {
  transform: rotate(360deg);
}
.motto {
  text-align: center;
  margin: 0.5em;
  font-size: $motto_font-size;
  color: $motto_color;
}
.social {
  text-align: center;
  margin-bottom: 2em;
}
.social-icon {
  margin: 0 0.5rem;
  font-size: 1.25rem;
}
.animated {
  -webkit-animation-fill-mode: both;
  -moz-animation-fill-mode: both;
  -ms-animation-fill-mode: both;
  -o-animation-fill-mode: both;
  animation-fill-mode: both;
  -webkit-animation-duration: 1s;
  -moz-animation-duration: 1s;
  -ms-animation-duration: 1s;
  -o-animation-duration: 1s;
  animation-duration: 1s;
}
.animated.hinge {
  -webkit-animation-duration: 1s;
  -moz-animation-duration: 1s;
  -ms-animation-duration: 1s;
  -o-animation-duration: 1s;
  animation-duration: 1s;
}
@-webkit-keyframes fadeInDown {
  0% {
    opacity: 0;
    -webkit-transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
  }
}
@-moz-keyframes fadeInDown {
  0% {
    opacity: 0;
    -moz-transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    -moz-transform: translateY(0);
  }
}
@-o-keyframes fadeInDown {
  0% {
    opacity: 0;
    -o-transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    -o-transform: translateY(0);
  }
}
.fadeInDown {
  -webkit-animation-name: fadeInDown;
  -moz-animation-name: fadeInDown;
  -o-animation-name: fadeInDown;
  animation-name: fadeInDown;
}
.nav {
  width: 100%;
  height: 80px;
  box-shadow: 0 3px 3px 0 #ccc;
  background: #fff;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 999;
  overflow: hidden;
  transition: 0.3s;
}
.nav.index {
  background: var(--navbg);
  box-shadow: 0 0 0 0 rgba(0,0,0,0.05);
}
.nav.scroll {
  background: var(--navbg);
  box-shadow: 0 3px 3px 0 rgba(0,0,0,0.05);
  transition: 0.3s;
}
.nav .layui-container {
  position: relative;
  transition: all 400ms ease-out;
}
.nav .layui-container .nav-title {
  font-family: $title_font;
  padding: 0.5em;
  font-weight: 700;
  font-size: 1.5em;
}
.nav .layui-container .nav-title a {
  color: var(--item);
}
.nav .nav-list {
  display: inline-block;
  height: 80px;
}
.nav .nav-list button {
  width: 25px;
  height: 30px;
  position: absolute;
  top: 15px;
  right: 15px;
  background-color: transparent;
  border: none;
  outline: none;
  cursor: pointer;
}
.nav .nav-list button span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text);
  margin-bottom: 6px;
  transition: 0.5s;
}
.nav .nav-list button span.spa1 {
  transform: rotate(45deg);
}
.nav .nav-list button span.spa3 {
  transform: rotate(-45deg) translate(5px, -5px);
}
.nav .layui-nav {
  width: 100%;
  position: absolute;
  right: 0;
  color: #000;
  background: transparent;
}
.nav .layui-nav .layui-nav-item {
  display: inline-block;
  margin: 0;
  padding: 1em 0.75em;
}
.nav .layui-nav * {
  font-size: 18px;
}
.nav .layui-nav .layui-nav-item a {
  padding: 0 0;
  color: var(--item);
}
.nav .layui-nav-bar,
.nav .layui-nav .layui-this:after {
  height: 2px;
  background-color: #517acd;
}
.nav .layui-nav .layui-this a,
.nav .layui-nav .layui-nav-item a:hover {
  color: #517acd;
}
@media screen and (min-width: 900px) {
  .nav {
    max-height: 60px;
  }
  .nav.index {
    background: var(--navbg);
  }
  .nav .nav-list button {
    display: none;
  }
  .nav .layui-nav {
    width: auto;
    position: absolute;
    top: 0;
    padding: 0 5px;
    border-radius: 0;
    margin: 0;
  }
  .nav .layui-nav .layui-nav-item {
    display: inline-block;
    margin: 0 0rem;
  }
}
@-moz-keyframes fadeInDown {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
@-webkit-keyframes fadeInDown {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
@-o-keyframes fadeInDown {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeInDown {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}