:root {
            --primary: #FF5722;
            --primary-hover: #E64A19;
            --primary-light: #FFCCBC;
            --secondary: #FF9800;
            --dark: #212121;
            --gray: #666666;
            --light-bg: #FAFAFA;
            --card-bg: #FFFFFF;
            --border-color: #EEEEEE;
            --shadow: 0 4px 20px rgba(0,0,0,0.05);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--dark);
            background-color: var(--light-bg);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary-hover);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

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

        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            margin: 8px auto 0;
            border-radius: 2px;
        }

        .section-title p {
            color: var(--gray);
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            border-bottom: 1px solid var(--border-color);
        }

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

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

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

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-menu a {
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 12px;
            border-radius: 4px;
        }

        .nav-menu a:hover {
            color: var(--primary);
            background-color: var(--light-bg);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            box-shadow: 0 4px 10px rgba(255, 87, 34, 0.2);
        }

        .nav-btn:hover {
            opacity: 0.9;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 6px;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero首屏 - 严禁出现图片 */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgba(255, 87, 34, 0.05) 0%, rgba(255, 152, 0, 0.02) 90%);
            padding: 120px 0 100px;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: bold;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--gray);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: bold;
            border-radius: 30px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 8px 24px rgba(255, 87, 34, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 87, 34, 0.4);
            color: #fff;
        }

        .btn-secondary {
            background: #fff;
            color: var(--dark);
            border: 2px solid var(--border-color);
        }

        .btn-secondary:hover {
            background: var(--light-bg);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* 平台特色标签云 */
        .platform-tags {
            margin-top: 50px;
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--gray);
            transition: var(--transition);
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: scale(1.05);
        }

        /* 软件介绍 */
        .software-intro {
            background-color: #fff;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-content h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .intro-content p {
            color: var(--gray);
            margin-bottom: 24px;
        }

        .feature-bullets {
            list-style: none;
        }

        .feature-bullets li {
            margin-bottom: 12px;
            padding-left: 28px;
            position: relative;
            font-weight: 500;
        }

        .feature-bullets li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
            font-size: 1.2rem;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-card {
            background: #fff;
            padding: 32px 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            color: var(--gray);
            font-size: 0.95rem;
        }

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.08);
            border-color: transparent;
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--gray);
            font-size: 0.95rem;
        }

        /* 流程步骤 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .step-item {
            background: #fff;
            padding: 30px 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin: 0 auto 20px;
        }

        .step-item h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--gray);
        }

        /* 对比评测 */
        .review-section {
            background-color: #fff;
        }

        .review-score-box {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 16px;
            padding: 40px;
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            box-shadow: 0 10px 30px rgba(255, 87, 34, 0.2);
        }

        .score-num {
            font-size: 4rem;
            font-weight: 900;
            line-height: 1;
        }

        .score-stars {
            font-size: 1.8rem;
            margin: 12px 0;
            color: #FFD700;
        }

        .score-desc {
            font-size: 1.1rem;
            opacity: 0.9;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: #fff;
            min-width: 800px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background-color: var(--light-bg);
            color: var(--dark);
            font-weight: bold;
        }

        .comparison-table tbody tr:hover {
            background-color: rgba(255, 87, 34, 0.02);
        }

        .highlight-col {
            background-color: rgba(255, 87, 34, 0.05);
            font-weight: 500;
            color: var(--primary-hover);
        }

        /* 案例展示区 - 包含宣传图和素材图 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .case-card:hover {
            transform: translateY(-6px);
        }

        .case-img-container {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: #eee;
        }

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

        .case-card:hover .case-img-container img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background: var(--light-bg);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 4px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
            font-weight: bold;
        }

        .case-info h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .case-info p {
            color: var(--gray);
            font-size: 0.88rem;
        }

        /* 价格与Token比价 */
        .price-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }

        .price-table th, .price-table td {
            padding: 18px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .price-table th {
            background-color: var(--dark);
            color: #fff;
        }

        .price-badge {
            background: #E8F5E9;
            color: #2E7D32;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: bold;
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 24px 16px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .training-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .training-card h3 {
            font-size: 1rem;
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 0.8rem;
            color: var(--gray);
        }

        /* 客户评论 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .testimonial-card {
            background: #fff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            position: relative;
        }

        .quote-icon {
            font-size: 2.5rem;
            color: var(--primary-light);
            line-height: 1;
            position: absolute;
            top: 20px;
            right: 30px;
        }

        .testimonial-text {
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .avatar-placeholder {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.1rem;
        }

        .user-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

        .user-info p {
            font-size: 0.78rem;
            color: var(--gray);
        }

        /* FAQ手风琴 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            margin-bottom: 12px;
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: bold;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #fff;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--light-bg);
        }

        .faq-answer p {
            padding: 20px 24px;
            color: var(--gray);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-color);
        }

        /* 网站术语百科 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .glossary-card {
            background: #fff;
            padding: 24px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .glossary-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .glossary-card p {
            font-size: 0.88rem;
            color: var(--gray);
        }

        /* 知识库/行业资讯 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-item {
            background: #fff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-item h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--gray);
            margin-top: 16px;
            display: flex;
            justify-content: space-between;
        }

        /* 智能需求匹配与联系我们表单 */
        .contact-section {
            background-color: #fff;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .contact-info-area {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-card {
            background: var(--light-bg);
            padding: 24px;
            border-radius: 12px;
            margin-bottom: 20px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .info-icon {
            font-size: 1.5rem;
            color: var(--primary);
        }

        .info-text h4 {
            margin-bottom: 6px;
        }

        .info-text p, .info-text a {
            color: var(--gray);
            font-size: 0.9rem;
        }

        .qr-codes {
            display: flex;
            gap: 24px;
            margin-top: 24px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 4px;
            background: #fff;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.8rem;
            color: var(--gray);
        }

        /* 表单样式 */
        .contact-form {
            background: var(--light-bg);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: #fff;
            color: var(--dark);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 87, 34, 0.1);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 16px;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background-color: #fff;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

        .float-item:hover {
            background-color: var(--primary);
            color: #fff;
            transform: scale(1.1);
        }

        .float-item svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-item .tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--dark);
            color: #fff;
            padding: 8px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }

        .float-item:hover .tooltip {
            opacity: 1;
        }

        .back-to-top {
            display: none;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #fff;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.4rem;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .footer-brand p {
            color: #aaa;
            margin-bottom: 12px;
        }

        .footer-links h4 {
            margin-bottom: 16px;
            font-size: 1.05rem;
            border-left: 3px solid var(--primary);
            padding-left: 10px;
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #aaa;
        }

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

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            color: #888;
        }

        .footer-bottom a {
            color: #888;
            margin-right: 15px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .intro-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .testimonials-grid, .cases-grid, .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .steps-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                padding: 20px;
                box-shadow: 0 4px 10px rgba(0,0,0,0.1);
                border-top: 1px solid var(--border-color);
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .services-grid, .testimonials-grid, .cases-grid, .glossary-grid, .stats-grid, .steps-container, .training-grid, .news-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }