* {
    margin: 0;
    padding: 0;
    /* 设置自动内减 */
    box-sizing: border-box;
    /* 设置所有文本标签的样式为none */
    text-decoration: none;
}

html {
    /* 设置页面平滑滚动 */
    scroll-behavior: smooth;
}

.showcase {
    /* 相对长度单位 */
    height: 100vh;
    /* 弹性盒子布局 */
    display: flex;
    /* 设置相对定位 */
    position: relative;
    /* 设置居中 垂直.水平*/
    align-items: center;
    justify-content: center;

    text-align: center;
    background-color: #000;
    background-image: url('../resources/image/background-index.jpg');
    background-size: cover;
    color: #fff;
    overflow: hidden;
}

.video-container video {
    min-width: 100%;
    min-height: 100%;
}

h1 {
    font-size: 80px;
    margin-bottom: 80px;
}

h2 {
    font-size: 40px;
    font-weight: 400;
}

h3 {
    font-weight: 400;
}

.btn {
    display: inline-block;
    color: #fff;
    font-size: 14px;
    padding: 10px 20px;
    border: 1px solid #fff;
    margin-top: 10px;
    border-radius: 5px;
    letter-spacing: 2px;
    transition: .2s;
}

.btn:hover {
    transform: scale(.9);
    background-color: rgba(255, 255, 255, 0.2);
}

/* --------------------底部-------------------- */
.about h1 {
    margin: 50px 0 20px;
    font-size: 40px;
    font-family: '楷体';
    text-align: center;
}

.about h2 {
    font-size: 24px;
    text-align: center;
    font-weight: 400;
}

.about h2 span {
    font-family: 'HarmonyOS';
}

.about div {
    text-align: center;
    margin: 10px;
}

.about .btn {
    color: #000;
    border: 1px solid #000;
}

.about .btn:hover {
    transform: scale(.9);
    background-color: rgba(255, 255, 255, 0.2);
}

.about p {
    margin: 10px;
    color: #363636;
    font-size: 15px;
    text-align: center;
    font-family: 'HarmonyOS';
}

@font-face {
    font-family: 'HarmonyOS';
    src: url('../font/HarmonyOS_Sans.ttf');
}

/* --------------------侧边滚动条-------------------- */
/* 设置滚动条的宽度和背景色 */
::-webkit-scrollbar {
    width: 0px;
    margin-bottom: 20px;
    background-color: #27486a;
}

/* 设置滚动条的滑块颜色和形状 */
::-webkit-scrollbar-thumb {
    background-color: #041028;
    border-radius: 10px;
}