:root {
    --bg-color: #0F172A;
    --text-color: #E2E8F0; /* 略带灰度的白，不刺眼 */
    --accent-color: #38BDF8; /* 浅蓝光晕色 */
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 背景画布 */
#canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.6; /* 让粒子不喧宾夺主 */
}

/* 内容容器 */
.content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-color);
    /* 内容本身的微妙呼吸感 */
    animation: content-breathe 8s ease-in-out infinite;
}

h1 {
    font-size: 3rem;
    font-weight: 200; /* 极细的字重，体现优雅 */
    letter-spacing: 0.2em;
    margin: 0;
    text-transform: uppercase;
    background: linear-gradient(to right, var(--text-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.9;
}

p {
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 0.15em;
    margin-top: 1.5rem;
    opacity: 0.6;
    text-transform: uppercase;
}

/* 文字的呼吸动画定义 */
@keyframes content-breathe {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.02); }
}

/* 移动端适配 */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    p { font-size: 0.875rem; }
}