/* 新年烟花背景样式 */
.newyear-fireworks {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1; /* 放在背景层，但在主要内容之下 */
    overflow: hidden;
}

.firework-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background-color: rgba(255, 100, 100, 0.6);
    box-shadow: 0 0 6px 1px rgba(255, 100, 100, 0.6);
    opacity: 0;
}

.firework-particle::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.6) 0%, rgba(255,255,255,0) 70%);
    opacity: 0.3;
}