/* 新增聚光灯样式 */
.spotlight-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    transition: background 0.3s ease;
}

/* 优化背景图加载体验 */
body::before {
    transition: opacity 0.8s ease;
}

body.loaded::before {
    opacity: 0.15;
}

/* 预加载处理 */
body::after {
    content: '';
    background-image: url('img/bg/arena-bg.jpg');
    display: none;
}