/* ============================================
   主题样式 - 底纹、背景效果等
   ============================================ */

/* 网格点阵底纹（方案1 - 推荐） */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(0, 102, 204, 0.08) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* 确保主要内容在底纹上方 */
.container, .header, .footer, .services, .latest-news, .about-full, .contact, .stats-section, .search-bar, .hero-text, .slider-section {
    position: relative;
    z-index: 1;
}

/* 暗色主题适配（如需深色模式可启用） */
[data-theme="dark"] body::before {
    background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}