@font-face {
    font-family: rodondo;
    src: url('fonts/Rodondo.otf');
}

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@100;300;400;500;700;900&display=swap');

@font-face {
    font-family: consola;
    src: url('fonts/CONSOLA.TTF');
}

html {
    height: 100%;
}

:root {
    --dark-grey-color:#1e1e1e;
    --light-white-color:#D9D9D9;
    --sign-color:rgb(167, 149, 212);
    --sign-back-color:rgb(109, 73, 150);
    --sign-text-color:rgb(242, 238, 222);
}

::-webkit-scrollbar {
    display: none;
}

/* webkit, opera, IE9 （谷歌浏览器）*/
body ::selection { 
    background:var(--sign-back-color); 
    color:var(--sign-text-color); 
    text-shadow: var(--sign-text-color) 0.5px 0 5px;
}
/* mozilla firefox（火狐浏览器） */
::-moz-selection { 
    background:var(--sign-back-color); 
    color:var(--sign-text-color); 
    text-shadow: var(--sign-text-color) 0.5px 0 5px;
}

body {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-image: url('image/BackgroundImage.png');
    background-color: var(--dark-grey-color);
    background-size: cover;
    background-attachment: fixed;
    margin: 0;
    padding: 0;
    font-family: 'Noto Sans SC', sans-serif;
    font-weight: 300;
    font-size: 14px;
    color: var(--light-white-color);
}

h1,h2,h3,h4,h5,h6 {
    user-select: none;
}

.maincontainer {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 基础设置 */

h1 {
    font-weight: 300;
    font-size: 5rem;
    margin: 0;
    padding: 0;
}

h3 {
    font-weight: 100;
    font-size: 3rem;
    margin: 0;
    padding: 0;
}

h4 {
    font-weight: 300;
    font-size: 2rem;
    margin: 0;
    padding: 0;
}

p {
    font-weight: 100;
    font-size: 1rem;
    margin: 0;
    padding: 0;
}

/* 字号设置 */

header {
    z-index: 9999;
    flex: 0 0 auto;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    margin: 0;
    padding: 0;
    position: fixed;
    transition: transform 0.5s ease;
}

header.hidden {
    transform: translateY(-85%);
}

nav {
    display: flex;
    justify-content: space-between;
    padding: 0;
    margin: 0;
}

.logo {
    font-family: rodondo;
    font-size: 1.2rem;
    margin-left: 3%;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

ul.in-nav {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    margin-right: 3%;
}

nav ul li {
    font-size: 1rem;
}

nav a:link,a:visited {
    text-decoration: none;
    color: var(--light-white-color);
    text-transform:uppercase;
}

nav ul a:link,a:visited {
    padding-left: 2rem;
    padding-right: 2rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
    margin: 0;
}

nav ul a:hover,a:active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 顶栏结束 */

.centercontainer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height:20rem;
    padding: 0;
    padding-top: 6rem;
}

h1.mainpage,h3.mainpage {
    margin: 0;
    padding: 0.1rem;
}

/* 标题结束 */

.link-btns {
    display: flex;
    justify-content: center;
    margin-left: 5%;
    margin-right: 5%;
    margin-bottom: 5rem;
}

.link-btn {
    background: rgba(40, 40, 40, 0.4);
    border-radius: 20px;
    text-align: center;
    width: 300px;
    padding: 1.5rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    padding-bottom: 2rem;
    margin: 1rem;
    margin-left: 2%;
    margin-right: 2%;
}

div.link-btn p {
    margin-top: 1rem;
}

.link-btns a.link-btn {
    text-decoration: none;
    color: var(--light-white-color);
    text-transform:uppercase;
}

.link-btns a:hover,.link-btns a:active {
    background: rgba(0, 0, 0, 0.3);
    color: var(--sign-color);
}

.iconbtn {
    text-align: center;
    width: 200px;
    padding-top: 1rem;
    padding-bottom: 1rem;
    margin-left: 3%;
    margin-right: 3%;
}

a.iconbtn {
    text-decoration: none;
    color: var(--light-white-color);
}

a.iconbtn:hover,a.iconbtn:active {
    color: var(--sign-color);
    background-color: rgba(0, 0, 0, 0);
}

/* 三块结束 */

footer {
    bottom: 0;
    left: 17rem;
    flex: 0 0 auto;
    font-family: consola;
    font-size: 0.2rem;
    text-align: center;
    padding-bottom: 1rem;
}

footer a{
    color: var(--light-white-color);
    text-transform:uppercase;
}

/* 底部结束 */




/* 子主页相关 */

.lefttitle {
    flex-shrink: 0;
    flex-grow: 1;
    padding-top: 10rem;
    padding-left: 3%;
    padding-right: 3%;
}

.lefttitle h4 {
    padding-bottom: 0;
    margin-bottom: -1rem;
    padding-left: 0.3rem;
}

.lefttitle h1 {
    padding-top: 0;
    margin-top: 0;
    border-bottom: 3px solid var(--light-white-color);
}

.lefttitle p {
    padding-top: 1.5rem;
    padding-left: 0.2rem;
    width: 46%;
}

.lefttitle img {
    margin-top: 2rem;
}

.longmenu {
    margin-left: 4%;
    margin-right: 4%;
    border: 3px solid var(--light-white-color);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 5rem;
}

.leftcontainer h3 {
    border-bottom: 2px solid var(--light-white-color);
}

.leftcontainer h4 {
    padding-top: 2rem;
    border-bottom: 1px solid var(--light-white-color);
}

.leftcontainer p {
    padding-top: 1.5rem;
    line-height: 160%;
}

.listcontainer {
    display: flex;
    justify-content:flex-start;
    width: 80%;
    padding-top: 1rem;
    padding-bottom: 1rem;
    font-size: 0.8rem;
}

ul.mainlst {
    list-style-position: outside;
    overflow: hidden;
    margin-left: 0;
    width: 50%;
}

.listcontainer li {
    padding-top: 0.8rem;
    padding-left: 0;
    margin-left: 0;
}

.listcontainer a {
    text-decoration: none;
    color: var(--light-white-color);
}

.listcontainer a:hover,.listcontainer a:active {
    color: var(--sign-color);
}