/* @import url(//at.alicdn.com/t/c/font_3859342_a1zefhweue.css); */

:root {
  --main-color: #1abc9c;
  --second-color: #0575E6;
  --third-color: #4bc2ce;
  --warn-color: #c81623;
  --body-bg-color: #fafafa;
  --bg-color: #fff;
  --w-width: 1024px;
  --header-h: 250px;
  --chap-h: 90px;
  --padding: 10px;
  --margin: 20px;
  --scroll-bar-w: 8px;
  --scroll-bar-r: 4px;
}

body,
header,
div,
h1,
nav,
a,
span {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-align: justify;
  font-family: "Alibaba PuHuiTi", "Source Han Serif", "Source Han Sans", "PingFang SC", "Microsoft YaHei", "微软雅黑", Arial, Helvetica, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 62.5%;
}

a {
  color: inherit;
  text-decoration: none;
  line-height: 2;
}

body {
  background-color: var(--body-bg-color);
  font-size: 1.6rem;
}

body::-webkit-scrollbar {
  width: var(--scroll-bar-w);
}

body::-webkit-scrollbar-track {
  background-color: var(--bg-color);
}

body::-webkit-scrollbar-thumb {
  background-image: linear-gradient(var(--main-color), transparent);
  border-radius: var(--scroll-bar-r);
}

header {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: var(--padding);
  height: 30vh;
  max-height: var(--header-h);
  color: var(--bg-color);
  background-color: var(--blue-color);
  background: linear-gradient(45deg, var(--main-color), var(--second-color));
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

header h1 {
  font-weight: normal;
  font-size: 1.8rem;
}

header span {
  font-size: 1.4rem;
}

header::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 200%;
  height: var(--scroll-bar-w);
  background-image: linear-gradient(to right, #2ed573 0%, #f1c40f 50%, #4bc2ce 100%);
  animation: roll 5s linear infinite alternate;
}

@keyframes roll {
  to {
    transform: translateX(-50%);
  }
}

.svg {
  position: absolute;
  top: 20px;
  right: 20px;
}

.container {
  position: relative;
  max-width: var(--w-width);
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-color);
  margin: 0 auto;
}

.cont-wrap {
  padding: var(--padding);
}

.chap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: var(--chap-h);
  padding: var(--padding);
  color: var(--bg-color);
  background-color: var(--third-color);
  text-transform: capitalize;
  font-size: 1.8rem;
}

.item {
  display: flex;
  align-items: center;
}

.item:hover {
  color: var(--main-color);
}

.item::after {
  content: attr(data-title);
  order: 2;
}

.item::before {
  content: '';
  flex: 1;
  height: 3px;
  background-image: url(../imgs/dot.png);
  background-repeat: repeat-x;
  order: 1;
}