/* 通用样式 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: "Helvetica Neue", Helvetica, Arial, "Microsoft Yahei", sans-serif;
            line-height: 1.6;
            background: #f8f9fa;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 资质展示模块 */
        .certificate-section {
            margin: 40px 0;
        }

        .certificate-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }

        .certificate-item {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            transition: transform 0.3s ease;
        }

        .certificate-item:hover {
            transform: translateY(-5px);
        }

        .certificate-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid #eee;
        }

        .certificate-info {
            padding: 15px;
            text-align: center;
        }

        /* 跑马灯模块 */
        .marquee-section {
            background: #fff;
            padding: 20px 0;
            margin: 40px 0;
            overflow: hidden;
            position: relative;
        }

        .marquee-container {
            white-space: nowrap;
            position: relative;
        }

        .marquee-content {
            display: inline-block;
            padding-right: 40px;
            animation: marquee 20s linear infinite;
        }

        .marquee-item {
            display: inline-block;
            margin-right: 40px;
            font-size: 16px;
            color: #666;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .certificate-grid {
                gap: 15px;
            }

            .certificate-img {
                height: 150px;
            }

            .marquee-item {
                font-size: 14px;
                margin-right: 20px;
            }
        }

        @keyframes marquee {
            0% { transform: translateX(100%); }
            100% { transform: translateX(-100%); }
        }