/* 新增：公告和资讯板块样式（与整体风格统一） */
        .announcement-section, .news-section {
            padding: 80px 0;
            background-color: #121212;
            color: #fff;
        }
        .announcement-list, .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }
        .announcement-item, .news-item {
            background: rgba(25,25,25,0.8);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid rgba(255,255,255,0.08);
            transition: all 0.3s ease;
        }
        .announcement-item:hover, .news-item:hover {
            transform: translateY(-5px);
            border-color: rgba(76,175,80,0.3);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        .announcement-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(76,175,80,0.2);
            color: #4CAF50;
            border-radius: 20px;
            font-size: 0.8rem;
            margin-bottom: 12px;
        }
        .news-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(33,150,243,0.2);
            color: #2196f3;
            border-radius: 20px;
            font-size: 0.8rem;
            margin-bottom: 12px;
        }
        .announcement-title, .news-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
            transition: color 0.3s;
        }
        .announcement-item:hover .announcement-title,
        .news-item:hover .news-title {
            color: #4CAF50;
        }
        .announcement-desc, .news-desc {
            color: #ccc;
            line-height: 1.6;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }
        .announcement-meta, .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #999;
            font-size: 0.85rem;
        }
        .more-btn {
            display: inline-block;
            padding: 10px 24px;
            background: rgba(76,175,80,0.1);
            color: #4CAF50;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            margin-top: 30px;
        }
        .more-btn:hover {
            background: #4CAF50;
            color: #fff;
        }
        @media (max-width: 768px) {
            .announcement-list, .news-list {
                grid-template-columns: 1fr;
            }
            .announcement-section, .news-section {
                padding: 60px 0;
            }
        }