/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }

        /* 核心红色区块样式 */
        .ai-pcb-banner {
            background-color: #e61919; /* 匹配原图红色调 */
            color: #ffffff;
            padding: 40px 20px;
            text-align: center;
            width: 100%;
            margin: 0 auto;
        }

        /* 标题样式 */
        .banner-title {
            font-size: clamp(1.5rem, 3vw, 2.2rem); /* 响应式字体 */
            font-weight: bold;
            margin-bottom: 15px;
            line-height: 1.3;
        }

        /* 描述文本样式 */
        .banner-desc {
            font-size: clamp(1rem, 1.8vw, 1.2rem);
            margin-bottom: 30px;
            line-height: 1.5;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 按钮样式 */
        .banner-btn {
            display: inline-block;
            background-color: #ffffff;
            color: #e61919;
            font-size: 1rem;
            font-weight: 600;
            padding: 12px 30px;
            text-decoration: none;
            border-radius: 4px;
            margin-bottom: 25px;
            transition: background-color 0.3s ease;
        }

        .banner-btn:hover {
            background-color: #f0f0f0;
        }

        /* 联系方式区域 */
        .banner-contact {
            font-size: clamp(0.85rem, 1.5vw, 1rem);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 15px; /* 间距自适应 */
        }

        /* 图标样式 */
        .contact-icon {
            width: 18px;
            height: 18px;
            margin-right: 5px;
            vertical-align: middle;
        }

        /* 联系方式项样式 */
        .contact-item {
            display: flex;
            align-items: center;
        }
        
        /* 链接样式保持和文本一致 */
        .contact-link {
            color: #ffffff;
            text-decoration: none;
        }
        
        .contact-link:hover {
            text-decoration: underline;
        }

        /* 适配手机端的响应式调整 */
        @media (max-width: 768px) {
            .ai-pcb-banner {
                padding: 30px 15px;
            }

            .banner-contact {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }

            .contact-item {
                justify-content: center;
            }
        }