:root {
  box-sizing: border-box;
  --color-main:rgba(246, 78, 0, 1);
  --color-help:rgb(253, 191, 55);
  --color-help2:rgba(55, 51, 50, 1);
  --color-help3:#ffba39;
  --back-main-color:rgba(0, 0, 0, 1);
  --text-color-main:#fff;
  --text-color-help:rgba(255, 222, 5,1);
  --footer-color:rgba(0, 0, 0, 1);
}

@font-face {
  font-family: "SourceHanSansSC";
  src: url(../font/SourceHanSansSC-Normal.otf);
}

* {
  position: relative;
  margin: 0;
  padding: 0;
  font-family: 'SourceHanSansSC';
}

ul,
li,
dl,
dd,
dt {
  list-style-type: none;
}

a {
  text-decoration: none;
  color: rgba(255, 222, 5,1);
}

h1{
  font-size: 42px;
}

h2 {
  font-size: 24px;
}

img {
  width: 100%;
  height: auto;
  border: none;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  font-size: 16px;
  line-height: initial;
  color: var(--text-color-main);
  background: var(--back-main-color);
  overflow: hidden;
}

body > * {
  width: 100%;
  padding: 3% 0;
}

video{
  margin: 0;
  padding: 0;
  border: none;
}

.content {
  width: 60%;
  margin: 0 auto;
}

input,
button {
  border: none;
  outline: none;
  background-color: none;
}

.article {
  text-indent: 2em;
}

.light-text {
  color: var(--text-color-help) !important;
}

.icon{
  width: 28px;
}

.title {
  width: 60%;
  text-align: center;
  position: relative;
  padding: 50px 0 20px 0;
  margin: auto;
  margin-bottom: 40px;
}
.title h1 {
  margin-bottom: 20px;
  background-image: linear-gradient(90deg,var(--color-help),var(--color-main));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.left {
  width: 45%;
}

.right {
  width: 45%;
}

.text-left {
  text-align: left !important;
}

/* content */
nav {
}

footer {
}

.file-card{
  background-color: var(--color-help2);
  border-radius: 10px;
  border: 3px solid #534e4d;
  padding: 10px;
  transition: transform .3s;
}

.file-type-operator{
  display: flex;
  flex-direction: row;
  align-items: center;
}
.file-type-operator span{
  flex: 1;
  color: #534e4d;
  font-weight: bold;
}
.file-type-operator i{
  margin: 0 10px;
}
.file-card h4{
  padding: 8px 0;
  color: #fff;
}
.file-card .size{
  color: #534e4d;
  font-weight: bold;
}

.file-card.card-img{
  display: flex;
  justify-content: space-between;
  overflow: hidden;
}
.file-card.card-img>img{
  width: 300px;
  transform: scale(1.1,1.2);
}
.file-card.card-img .box{
  width: calc(60% + 20px);
}