@font-face {
  font-family: 'HYYiSongW';
  src: url('../fonts/hanyi.ttf');
}
html {
  background-color: #333;
}

body {
  min-height: 100vh;
  background-color: transparent;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  background: url(../img/bg.jpg) no-repeat;
  background-size: cover;
  z-index: -1;
}

.page-index {
  color: #fff;
}
.page-tt {
  color: #fff;
  text-align: center;
  font-family: 'HYYiSongW';
  font-size: 64px;
  transform: scale(0.2);
  opacity: 0;
  animation: ttShow .8s .2s both;
}

@keyframes ttShow {
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.header,
.main {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 500px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}


.header {
  animation: headerToTop .5s 1s both;
}

@keyframes headerToTop {
  to {
    transform: translate(0, calc(-50% + 64px)) scale(0.5);
  }
}

.main {
  transform: translate(0, 100%);
  animation: toShow .8s 1s both;
}

@keyframes toShow {
  to {
    transform: translate(0, 0);
  }
}

.article-list {
  display: flex;
  justify-content: space-between;
  width: 85vw;
  min-width: 740px;
  max-width: 1200px;
  align-items: flex-start;
}

.article-list li {
  writing-mode: tb-lr;
  writing-mode: vertical-lr;
  padding: 10px 5px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 5px;
  /* letter-spacing: 0.2em; */
  transform: translate(0, 20px);
  transition: transform 0.3s;
  /* width: 32px; */
  text-align: center;
  overflow: hidden;
}

.article-list li:hover {
  transform: translate(0, 10px);
}

.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px;
  text-align: center;
  line-height: 2;
  font-size: 12px;
  color: #999;
  transform: translate(0, 100%);
  animation: toShow .3s 1.5s both;
}
.footer .link {
  color: #999;
}
.footer .link:hover {
  color: #ccc;
}

/* logo-wrap */
.top-nav {
  width: 200px;
  height: 100px;
  position: relative;
  left: 50%;
  transform: translate(-50%, 0);
  overflow: hidden;
  text-align: center;
  /* font-size: 24px;
  line-height: 60px; */
  
}

.top-nav::before {
  content: "";
  position: absolute;
  background: rgba(24, 142, 238, .7);
  animation: waveRotate 5s infinite linear;
  width: 200px;
  height: 200px;
  border-radius: 45%;
  bottom: 30px;
  left: 0;
  z-index: -1;
}

@keyframes waveRotate {
  to {
    transform: rotate(360deg);
  }
}

.top-nav .nav-icon {
  display: inline-block;
  vertical-align: middle;
  width: 24px;
  height: 24px;
  color: transparent;
  margin: 10px;
  cursor: pointer;
}
.top-nav .icon--home {
  background: url(../img/icon-home.png) no-repeat;
  background-size: cover;
}
.top-nav .icon--list {
  background: url(../img/icon-list.png) no-repeat;
  background-size: cover;
}
/* nav */
.nav {
  display: flex;
  justify-content: center;
  margin-bottom: 70px;
  transform: translate(0, calc(-100vh - 260px));
  transition: transform 0.3s;
  /* overflow: hidden; */
}
.nav--show + .nav {
  transform: translate(0, 0);
}

/* article */
.article {
  padding: 20px 20px 40px;
  background: #fff;
  width: 100vw;
  max-width: 740px;
  margin: 0 auto;
  position: relative;
  transform: translate(0, -260px);
  transition: transform 0.3s;
}
.nav--show ~ .article {
  transform: translate(0, 0);
}
.article::before,
.article::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  height: 5px;
  background: #ccc;
  top: -3px;
  z-index: -1;
}
.article::after {
  left: 4px;
  right: 4px;
  background: #999;
  top: -6px;
  z-index: -2;
}
.article h1,
.article h2,
.article h3,
.article h4 {
  font-weight: bold;
  text-transform: capitalize;
}
.article h1 {
  font-size: 32px;
  text-align: center;
  margin-bottom: 20px;
}
.article h2 {
  font-size: 24px;
  position: relative;
}
.article h2::before {
  content: "";
  width: 10px;
  height: 24px;
  position: absolute;
  background: #188eee;
  left: -25px;
  top: 50%;
  transform: translate(0, -50%);
}
.article h3 {
  font-size: 20px;
  position: relative;
}
.article h3::before {
  content: "";
  width: 5px;
  height: 20px;
  position: absolute;
  background: #5fb41b;
  left: -20px;
  top: 50%;
  transform: translate(0, -50%);
}
.article h4 {
  font-size: 16px;
}
.article img {
  max-width: 100%;
  display: block;
  margin: 15px 0;
}

.article p {
  line-height: 1.8;
  margin: 15px 0;
}

.article ul,
.article ol {
  margin: 15px 0 15px 20px;
  list-style: outside disc;
}
.article ol {
  list-style-type: decimal;
}

.article a {
  color: #188eee;
}
.article a:hover {
  color: #23b8ff;
}

@media (max-width: 740px) {
  .header,
  .main {
    min-height: auto;
  }
  .page-tt {
    font-size: 36px;
    writing-mode: vertical-lr;
  }
  .article-list {
    min-width: auto;
    flex-wrap: wrap;
    justify-content: flex-start;
    width: 100vh;
  }
  .article-list li {
    margin:20px 7px;
  }
  .header,
  .main,
  .footer {
    position: relative;
    animation: none;
  }
  .main {
    transform: none;
    min-height: 100vh;
    height: auto;
  }
  .article {
    transform: translate(0, -420px);
  }
}

/*

github.com style (c) Vasily Polovnyov <vast@whiteants.net>

*/

.hljs {
  display: block;
  overflow-x: auto;
  padding: 0.5em;
  color: #333;
  background: #f8f8f8;
  border-radius: 5px;
}

.hljs-comment,
.hljs-quote {
  color: #998;
  font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-subst {
  color: #333;
  font-weight: bold;
}

.hljs-number,
.hljs-literal,
.hljs-variable,
.hljs-template-variable,
.hljs-tag .hljs-attr {
  color: #008080;
}

.hljs-string,
.hljs-doctag {
  color: #d14;
}

.hljs-title,
.hljs-section,
.hljs-selector-id {
  color: #900;
  font-weight: bold;
}

.hljs-subst {
  font-weight: normal;
}

.hljs-type,
.hljs-class .hljs-title {
  color: #458;
  font-weight: bold;
}

.hljs-tag,
.hljs-name,
.hljs-attribute {
  color: #000080;
  font-weight: normal;
}

.hljs-regexp,
.hljs-link {
  color: #009926;
}

.hljs-symbol,
.hljs-bullet {
  color: #990073;
}

.hljs-built_in,
.hljs-builtin-name {
  color: #0086b3;
}

.hljs-meta {
  color: #999;
  font-weight: bold;
}

.hljs-deletion {
  background: #fdd;
}

.hljs-addition {
  background: #dfd;
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: bold;
}