body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #1a2f4b;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50% 50%;
    z-index: 1;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    /* 镜像圆形压暗效果 */
    background: radial-gradient(ellipse at center, rgba(0,0,0,0) 50%, rgba(0,0,0,0.7) 100%);
}

.center-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    color: #ccd6f6;
    text-align: center;
    text-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

.center-text h1 {
    font-size: 3rem;
    margin: 0;
    letter-spacing: 2px;
}

.center-text p {
    font-size: 1.5rem;
    margin: 15px 0 0;
    letter-spacing: 1.5px;
    line-height: 1.6;
}

.center-text a {
    color: inherit; /* 继承父元素颜色 */
    text-decoration: none; /* 移除下划线 */
}