:root {
            --primary: #0052d9;
            --primary-light: #e3edfc;
            --primary-hover: #003ebd;
            --secondary: #00c9a7;
            --text-main: #1d2129;
            --text-muted: #4e5969;
            --bg-body: #f4f7fc;
            --bg-card: #ffffff;
            --border-color: #e5e6eb;
            --max-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }

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

        .logo-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-page-logo {
            max-height: 45px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 15px;
            align-items: center;
        }

        .nav-link {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            padding: 5px 8px;
            border-radius: 4px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .nav-btn {
            background-color: var(--primary);
            color: #fff;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* 统一标题组件 */
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--secondary);
            border-radius: 2px;
        }

        .section-title p {
            color: var(--text-muted);
            margin-top: 15px;
            font-size: 16px;
        }

        /* 模块统一样式 */
        section {
            padding: 80px 0;
            background-color: var(--bg-card);
        }

        section:nth-child(even) {
            background-color: var(--bg-body);
        }

        /* 首屏 Hero 区域 (无图片) */
        .hero-section {
            background: linear-gradient(135deg, #0052d9 0%, #002280 100%);
            color: #ffffff;
            padding: 100px 0 120px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 201, 167, 0.15) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(255,255,255,0.15);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 25px;
            border: 1px solid rgba(255,255,255,0.25);
            color: var(--secondary);
        }

        .hero-content h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 25px;
            letter-spacing: -0.5px;
        }

        .hero-content p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-primary-large {
            background-color: var(--secondary);
            color: #1d2129;
            padding: 16px 40px;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 15px rgba(0, 201, 167, 0.4);
            transition: var(--transition);
            display: inline-block;
        }

        .btn-primary-large:hover {
            background-color: #00e0ba;
            transform: translateY(-2px);
            color: #1d2129;
        }

        .btn-secondary-large {
            background-color: transparent;
            color: #ffffff;
            padding: 16px 40px;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 700;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: var(--transition);
            display: inline-block;
        }

        .btn-secondary-large:hover {
            border-color: #ffffff;
            background-color: rgba(255, 255, 255, 0.1);
            color: #ffffff;
        }

        /* 核心优势数据卡片 */
        .data-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -50px;
            position: relative;
            z-index: 20;
        }

        .data-card {
            background-color: var(--bg-card);
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            border-top: 4px solid var(--primary);
            transition: var(--transition);
        }

        .data-card:hover {
            transform: translateY(-5px);
        }

        .data-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .data-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 关于我们与软件介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 15px;
            font-size: 15px;
        }

        .software-features {
            background-color: var(--primary-light);
            padding: 30px;
            border-radius: 8px;
            border-left: 5px solid var(--primary);
        }

        .software-features h4 {
            color: var(--primary);
            margin-bottom: 15px;
            font-size: 18px;
        }

        .software-features ul li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            color: var(--text-main);
            font-size: 14px;
        }

        .software-features ul li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: bold;
        }

        /* AIGC 服务体系 */
        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag {
            background-color: var(--bg-body);
            color: var(--primary);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid var(--border-color);
        }

        .tag-highlight {
            background-color: var(--primary-light);
            border-color: var(--primary);
        }

        /* 制作流程与服务网络 */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }

        .flow-card {
            background-color: var(--bg-card);
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .flow-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .flow-card h3 {
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 12px;
        }

        /* 对比评测 */
        .review-header {
            display: flex;
            justify-content: space-around;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
            color: white;
            padding: 30px;
            border-radius: 8px;
            margin-bottom: 40px;
            text-align: center;
        }

        .review-score {
            font-size: 48px;
            font-weight: 800;
            color: var(--secondary);
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: #fff;
            min-width: 700px;
        }

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

        .comparison-table th {
            background-color: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
        }

        .comparison-table tr:hover {
            background-color: var(--bg-body);
        }

        /* 案例中心图片展示 */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .case-item {
            background-color: var(--bg-card);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        .case-img-box {
            display: flex;
            flex-direction: column;
            gap: 15px;
            padding: 20px;
            background-color: var(--bg-body);
        }

        .case-img-box img {
            border-radius: 6px;
            box-shadow: 0 2px 6px rgba(0,0,0,0.1);
        }

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 10px;
        }

        /* 智能需求匹配与表单 */
        .matching-form-wrapper {
            background-color: var(--bg-card);
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.06);
            padding: 40px;
            max-width: 800px;
            margin: 0 auto;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-group label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.15);
        }

        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }

        .submit-btn:hover {
            background-color: var(--primary-hover);
        }

        /* 培训体系 */
        .training-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--secondary);
            transform: translateY(-3px);
        }

        .training-card h4 {
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: "−";
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #fafbfc;
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* 评论板块 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .comment-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 20px;
            font-style: italic;
        }

        .comment-author {
            display: flex;
            flex-direction: column;
        }

        .comment-author-name {
            font-weight: 700;
            color: var(--primary);
            font-size: 15px;
        }

        .comment-author-title {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 资讯与知识库 */
        .news-section {
            background-color: var(--bg-card);
        }

        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .news-item {
            background-color: var(--bg-body);
            border-radius: 8px;
            padding: 25px;
            border-top: 3px solid var(--primary);
        }

        .news-item h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .news-links {
            margin-top: 15px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
        }

        /* 友情链接与底部说明 */
        footer {
            background-color: #0c1a30;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

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

        .footer-brand h3 {
            color: #ffffff;
            font-size: 20px;
            margin-bottom: 15px;
        }

        .footer-brand p {
            margin-bottom: 15px;
            line-height: 1.8;
        }

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 16px;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }

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

        .footer-qr img {
            max-width: 120px;
            border-radius: 6px;
            margin-bottom: 10px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .friend-links {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .friend-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
        }

        .friend-links a:hover {
            color: var(--secondary);
        }

        /* 浮动客服栏 */
        .float-service {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .service-item {
            background-color: var(--primary);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .service-item:hover {
            background-color: var(--primary-hover);
        }

        .service-qr-pop {
            display: none;
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            text-align: center;
            width: 140px;
        }

        .service-qr-pop img {
            width: 110px;
            height: 110px;
            display: block;
            margin: 0 auto 8px auto;
        }

        .service-qr-pop p {
            color: var(--text-main);
            font-size: 12px;
            font-weight: 600;
        }

        .service-item:hover .service-qr-pop {
            display: block;
        }

        /* 自助排查与术语 */
        .troubleshoot-box, .百科-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            margin-top: 20px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .data-cards {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -20px;
                padding: 0 10px;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--bg-card);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 10px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero-content h1 {
                font-size: 28px;
            }

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

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

            .form-group.full-width {
                grid-column: span 1;
            }

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

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