/* 变量定义与基础重置 */
        :root {
            --primary: #00b4d8;
            --primary-dark: #0077b6;
            --secondary: #90e0ef;
            --dark: #0f172a;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #334155;
            --text-light: #64748b;
            --border-color: #e2e8f0;
            --gradient: linear-gradient(135deg, #0f172a 0%, #03045e 100%);
            --cyan-gradient: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--light-bg);
        }

        body {
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        /* 统一容器规范 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            position: relative;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            max-height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-link {
            font-size: 0.9rem;
            color: var(--text-main);
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 6px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary-dark);
            background-color: rgba(0, 180, 216, 0.08);
        }

        .nav-cta {
            background: var(--cyan-gradient);
            color: #ffffff;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: 500;
            font-size: 0.85rem;
        }

        .nav-cta:hover {
            box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
            padding: 4px;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 2px;
            background-color: var(--dark);
            transition: var(--transition);
        }

        /* 移动端菜单显示控制 */
        @media (max-width: 1024px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
        }

        /* 标题模块通用组件 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-header h2 {
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--cyan-gradient);
            margin: 8px auto 0 auto;
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 1rem;
        }

        /* Hero 首屏 - 无任何图片，纯科技渐变与卡片排版 */
        .hero {
            background: var(--gradient);
            color: #ffffff;
            padding: 100px 0 80px 0;
            overflow: hidden;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.5rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 20px;
            background: linear-gradient(to right, #ffffff, var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-tagline {
            font-size: 1.15rem;
            color: var(--secondary);
            margin-bottom: 24px;
            font-weight: 500;
        }

        .hero-desc {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            margin-bottom: 35px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .btn-primary {
            background: var(--cyan-gradient);
            color: #ffffff;
            padding: 14px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 4px 15px rgba(0, 180, 216, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 180, 216, 0.6);
        }

        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #ffffff;
            padding: 12px 26px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
        }

        .btn-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        /* 迷你卡片组件 - 用于Hero首屏右侧代替图片 */
        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .visual-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            gap: 16px;
            transform: translateX(0);
            transition: var(--transition);
        }

        .visual-card:hover {
            transform: translateX(-10px);
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
        }

        .visual-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(0, 180, 216, 0.2);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .visual-info h3 {
            font-size: 1rem;
            color: #ffffff;
            margin-bottom: 4px;
        }

        .visual-info p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        @media (max-width: 991px) {
            .hero-inner {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                margin-top: 20px;
            }
        }

        /* 软件介绍与亮点指标 */
        .intro {
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-color);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .intro-details h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .intro-details p {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .highlight-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 25px;
        }

        .tag {
            background-color: rgba(0, 180, 216, 0.05);
            color: var(--primary-dark);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(0, 180, 216, 0.1);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .metric-card {
            background-color: var(--light-bg);
            padding: 24px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            text-align: center;
        }

        .metric-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1;
            margin-bottom: 6px;
        }

        .metric-num span {
            color: var(--primary-dark);
            font-size: 1.5rem;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* 服务体系 & 场景 */
        .services {
            background-color: var(--light-bg);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px -5px rgba(0, 180, 216, 0.15);
            border-color: var(--primary);
        }

        .service-card h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .service-features {
            list-style: none;
            padding-left: 0;
        }

        .service-features li {
            font-size: 0.85rem;
            color: var(--text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .service-features li::before {
            content: '✓';
            color: var(--primary-dark);
            font-weight: bold;
        }

        /* 流程步骤与标准化流程 */
        .process-section {
            background-color: #ffffff;
        }

        .timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 25px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--border-color);
            z-index: 1;
        }

        .timeline-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 2;
            padding: 0 10px;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #ffffff;
            border: 3px solid var(--primary);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px auto;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .timeline-step:hover .step-num {
            background-color: var(--primary);
            color: #ffffff;
        }

        .timeline-step h3 {
            font-size: 1.05rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .timeline-step p {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        @media (max-width: 768px) {
            .timeline {
                flex-direction: column;
                gap: 30px;
            }
            .timeline::before {
                display: none;
            }
        }

        /* 技术平台与支持的AI */
        .platforms {
            background-color: var(--light-bg);
            padding: 60px 0;
        }

        .platform-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .platform-badge {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
        }

        .platform-badge:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transform: scale(1.05);
        }

        /* 案例中心 */
        .cases {
            background-color: #ffffff;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 991px) {
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .cases-grid {
                grid-template-columns: 1fr;
            }
        }

        .case-card {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            background: #ffffff;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .case-img-container {
            width: 100%;
            height: 240px;
            background-color: #f1f5f9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 20px;
        }

        .case-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .case-desc {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        /* 对比评测表格 */
        .comparison {
            background-color: var(--light-bg);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background-color: #ffffff;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.9rem;
            min-width: 600px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background-color: #f8fafc;
            color: var(--dark);
            font-weight: 600;
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table td strong {
            color: var(--primary-dark);
        }

        .rating-badge {
            background-color: #fff9db;
            color: #f59f00;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.8rem;
        }

        /* Token比价与技术培训 */
        .info-split {
            background-color: #ffffff;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .info-box {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            background-color: var(--light-bg);
        }

        .info-box h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 15px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 8px;
            display: inline-block;
        }

        .price-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 15px;
        }

        .price-item {
            display: flex;
            justify-content: space-between;
            background-color: #ffffff;
            padding: 12px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            font-size: 0.85rem;
        }

        .training-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 15px;
        }

        .training-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background-color: #ffffff;
            padding: 12px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            font-size: 0.85rem;
        }

        .training-cert {
            background-color: rgba(0, 180, 216, 0.1);
            color: var(--primary-dark);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .info-split {
                grid-template-columns: 1fr;
            }
        }

        /* 客户评价 */
        .reviews {
            background-color: var(--light-bg);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 991px) {
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .reviews-grid {
                grid-template-columns: 1fr;
            }
        }

        .review-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .review-card:hover {
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary-dark);
        }

        .review-meta h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }

        .review-meta span {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        .review-body {
            font-size: 0.85rem;
            color: var(--text-main);
            line-height: 1.6;
        }

        /* FAQ折叠面板 */
        .faq-section {
            background-color: #ffffff;
        }

        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            background-color: #ffffff;
            transition: var(--transition);
        }

        .faq-header {
            padding: 18px 24px;
            background-color: #ffffff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--dark);
        }

        .faq-header::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--text-light);
            transition: var(--transition);
        }

        .faq-item.active .faq-header::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-content {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-light);
            font-size: 0.88rem;
            border-top: 0px solid var(--border-color);
            background-color: #f8fafc;
        }

        .faq-item.active .faq-content {
            padding: 18px 24px;
            max-height: 500px;
            border-top: 1px solid var(--border-color);
        }

        /* 知识库及自助排查 */
        .knowledge {
            background-color: var(--light-bg);
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 30px;
        }

        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .article-card {
            background: #ffffff;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-card h4 {
            font-size: 1.05rem;
            color: var(--dark);
        }

        .article-card a {
            color: var(--primary-dark);
            font-weight: 500;
            font-size: 0.9rem;
            align-self: flex-start;
        }

        .article-card a:hover {
            text-decoration: underline;
        }

        .troubleshoot-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
        }

        .troubleshoot-box h3 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 15px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 8px;
        }

        .troubleshoot-list {
            list-style: none;
        }

        .troubleshoot-list li {
            font-size: 0.85rem;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            justify-content: space-between;
        }

        .troubleshoot-list li:last-child {
            border-bottom: none;
        }

        .troubleshoot-tag {
            background-color: #fee2e2;
            color: #ef4444;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.75rem;
        }

        @media (max-width: 991px) {
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 术语百科与服务网络 */
        .network {
            background-color: #ffffff;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .network-card {
            background-color: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
        }

        .network-card h4 {
            color: var(--dark);
            margin-bottom: 6px;
            font-size: 0.95rem;
        }

        .network-card p {
            color: var(--text-light);
            font-size: 0.8rem;
        }

        .glossary {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            background-color: var(--light-bg);
        }

        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .glossary-item h5 {
            color: var(--dark);
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

        .glossary-item p {
            color: var(--text-light);
            font-size: 0.8rem;
        }

        /* 智能需求匹配 (表单) & 联系我们 */
        .contact-section {
            background-color: var(--light-bg);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: start;
        }

        .form-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

        .form-card h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.9rem;
            color: var(--text-main);
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .btn-submit {
            width: 100%;
            background: var(--cyan-gradient);
            color: #ffffff;
            padding: 12px;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0, 180, 216, 0.3);
            transition: var(--transition);
        }

        .btn-submit:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 15px rgba(0, 180, 216, 0.4);
        }

        .contact-info-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px;
        }

        .contact-info-card h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
            margin-bottom: 25px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.9rem;
        }

        .contact-label {
            font-weight: bold;
            color: var(--dark);
            width: 80px;
            flex-shrink: 0;
        }

        .qr-area {
            border-top: 1px solid var(--border-color);
            padding-top: 25px;
            text-align: center;
        }

        .qr-area img {
            width: 120px;
            height: 120px;
            margin: 0 auto 10px auto;
            display: block;
            border: 1px solid var(--border-color);
            padding: 4px;
            border-radius: 6px;
        }

        .qr-area p {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        @media (max-width: 768px) {
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
        }

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #1e293b;
            padding-bottom: 40px;
        }

        .footer-logo img {
            max-height: 35px;
            width: auto;
            margin-bottom: 15px;
        }

        .footer-title {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            background-color: #1e293b;
            color: #94a3b8;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: #ffffff;
            background-color: var(--primary);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .copyright {
            color: #64748b;
        }

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            width: 130px;
            padding: 12px;
            text-align: center;
            z-index: 1000;
            transition: var(--transition);
        }

        .float-kefu:hover {
            transform: translateY(-5px);
        }

        .float-kefu img {
            width: 100px;
            height: 100px;
            margin-bottom: 6px;
            border-radius: 4px;
        }

        .float-kefu p {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--dark);
        }

        @media (max-width: 768px) {
            .float-kefu {
                display: none; /* 移动端隐藏悬浮 */
            }
        }