/* 页面标题区域 */
        .page-hero {
            background: linear-gradient(rgba(30, 58, 138, 0.9), rgba(30, 58, 138, 0.8)), url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
        }
        
        @media (max-width: 992px) {
            .page-hero {
                padding: 60px 0;
            }
        }
        
        .page-hero-title {
            font-size: 2.8rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        
        @media (max-width: 768px) {
            .page-hero-title {
                font-size: 2.2rem;
            }
        }
        
        .breadcrumb {
            background-color: transparent;
            padding: 0;
        }
        
        .breadcrumb-item.active {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .breadcrumb-item a {
            color: white;
            text-decoration: none;
        }
        
        /* 服务介绍部分 */
        .service-intro {
            padding: 5rem 0;
        }
        
        .problem-box {
            background-color: #FEF2F2;
            border-left: 4px solid #DC2626;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        
        .solution-box {
            background-color: #F0F9FF;
            border-left: 4px solid #0EA5E9;
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        
        /* 产品特点 */
        .feature-card {
            border-radius: 10px;
            border: 1px solid #E5E7EB;
            padding: 2rem;
            height: 100%;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
        }
        
        .feature-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(14, 165, 233, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: #0EA5E9;
            font-size: 1.8rem;
        }
        
        /* 适用场景 */
        .scene-item {
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            height: 280px;
            margin-bottom: 1.5rem;
        }
        
        .scene-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .scene-item:hover .scene-img {
            transform: scale(1.05);
        }
        
        .scene-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
            color: white;
            padding: 1.5rem;
        }
        
        /* 材料比较表格 */
        .material-comparison {
            background-color: #F9FAFB;
            padding: 5rem 0;
        }
        
        .comparison-table {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
        }
        
        .comparison-table th {
            background-color: #1E3A8A;
            color: white;
            padding: 1.2rem;
            font-weight: 600;
        }
        
        .comparison-table td {
            padding: 1.2rem;
            border-bottom: 1px solid #E5E7EB;
        }
        
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        
        .comparison-table .recommended {
            background-color: rgba(14, 165, 233, 0.05);
        }
        
        /* 安装流程 */
        .process-step {
            position: relative;
            padding-left: 3rem;
            margin-bottom: 2.5rem;
        }
        
        .process-step:last-child {
            margin-bottom: 0;
        }
        
        .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 2.5rem;
            height: 2.5rem;
            background-color: #1E3A8A;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        
        /* 相关案例 */
        .related-case {
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            height: 300px;
            margin-bottom: 1.5rem;
        }
        
        .related-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .related-case:hover .related-img {
            transform: scale(1.05);
        }
        
        .related-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
            color: white;
            padding: 1.5rem;
            transform: translateY(20px);
            opacity: 0;
            transition: all 0.3s;
        }
        
        .related-case:hover .related-overlay {
            transform: translateY(0);
            opacity: 1;
        }
        
        /* 常见问题 */
        .faq-section {
            padding: 5rem 0;
            background-color: #F9FAFB;
        }
        
        .faq-item {
            border-bottom: 1px solid #E5E7EB;
            padding: 1.5rem 0;
        }
        
        .faq-item:last-child {
            border-bottom: none;
        }
        
        .faq-question {
            font-weight: 600;
            color: #1E3A8A;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-answer {
            margin-top: 1rem;
            color: var(--dark-gray);
            display: none;
        }
        
        .faq-item.active .faq-answer {
            display: block;
        }
        
        .faq-item.active .faq-question .bi-chevron-down {
            transform: rotate(180deg);
        }
        
        /* 服务咨询CTA */
        .service-cta {
            background-color: #1E3A8A;
            color: white;
            padding: 4rem 0;
        }
        
        .service-cta-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }
        
        /* 按钮样式 */
        .btn-primary {
            background-color: #1E3A8A;
            border-color: #1E3A8A;
            padding: 0.75rem 2rem;
            font-weight: 500;
            border-radius: 8px;
        }
        
        .btn-primary:hover {
            background-color: #1e3a8ae6;
            border-color: #1e3a8ae6;
        }
        
        .btn-outline-primary {
            border-radius: 8px;
            padding: 0.75rem 2rem;
            font-weight: 500;
        }
        

        
        /* SEO优化样式 - 隐藏但屏幕阅读器可访问 */
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in-up {
            animation: fadeInUp 0.6s ease-out;
        }