html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    background-color: #000000;
    color: #fff;
    font-family: TEXT, "Microsoft YaHei", sans-serif;
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 1.5s ease;
}

body.jia-zai-wan-cheng {
    opacity: 1;
}

body.tui-chu-dong-hua {
    opacity: 0;
    transition: opacity 1s ease-in;
}

@font-face {
    font-family: TEXT;
    src: url(../img/diandianxiangsutiyuanxing.ttf);
    font-display: block;
}

#bei-jing-hua-bu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.huan-xing-hu-xi-guang-yun {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 80vw;
    height: 80vh;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(20, 20, 30, 0.4) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 2;
    pointer-events: none;
    animation: hu-xi-dong-hua 8s ease-in-out infinite alternate;
}

@keyframes hu-xi-dong-hua {
    0% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }

    100% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.zhu-ti-nei-rong {
    position: relative;
    z-index: 3;
    width: 100%;
}

.wen-zhang-rong-qi {
    max-width: 800px;
    margin: 0 auto;
    padding: 150px 40px 80px;
    box-sizing: border-box;
    min-height: 100vh;
    transform: translateY(50px);
    opacity: 0;
    transition: all 1.2s cubic-bezier(0.19, 1, 0.22, 1);
}

body.jia-zai-wan-cheng .wen-zhang-rong-qi {
    transform: translateY(0);
    opacity: 1;
}

.fan-hui-an-niu {
    display: inline-block;
    margin-bottom: 40px;
    padding: 10px 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #888;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 14px;
    letter-spacing: 2px;
    border-radius: 30px;
    cursor: pointer;
}

.fan-hui-an-niu:hover {
    border-color: #fff;
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(-5px);
}

h1 {
    font-size: 32px;
    font-weight: 100;
    letter-spacing: 5px;
    margin: 0 0 20px 0;
    opacity: 0.9;
}

.wen-zhang-ri-qi {
    font-size: 12px;
    color: #555;
    margin-bottom: 60px;
    font-family: monospace;
    letter-spacing: 1px;
}

.wen-zhang-nei-rong {
    color: #999;
    line-height: 2.4;
    font-size: 16px;
    font-weight: 300;
}

.wen-zhang-nei-rong p {
    margin-bottom: 30px;
    color: #999;
}

.wen-zhang-nei-rong p:hover {
    color: #ccc;
}

.gao-liang {
    color: #fff;
    font-weight: 400;
}

.fen-ge-xian {
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1), transparent);
    margin: 60px 0;
}

.wen-zhang-jie-wei {
    text-align: center;
    margin-top: 80px;
}

.wen-zhang-jie-wei p {
    color: #666;
    font-size: 14px;
    letter-spacing: 2px;
}