:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #06b6d4;
            --bg-light: #f8fafc;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --white: #ffffff;
            --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #06b6d4 100%);
            --gradient-subtle: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
            --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 1px 10px rgba(0,0,0,0.05);
            z-index: 1000;
            transition: var(--transition);
        }

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

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

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

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

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

        .nav-links a, .ai-page-home-link {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

        .nav-links a:hover, .ai-page-home-link:hover {
            color: var(--primary);
        }

        .nav-btn {
            background: var(--gradient-primary);
            color: var(--white);
            border: none;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
            transition: var(--transition);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(79, 70, 229, 0.4);
        }

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

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

        /* Hero 首屏 - 纯文字/渐变/无图片设计 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 20% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 40%),
                        linear-gradient(180deg, #ffffff 0%, var(--bg-light) 100%);
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: linear-gradient(90deg, rgba(79, 70, 229, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 24px;
            border: 1px solid rgba(79, 70, 229, 0.15);
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--text-dark);
        }

        .hero h1 span {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: var(--white);
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
        }

        .btn-secondary {
            background: var(--white);
            color: var(--text-dark);
            border: 1px solid #cbd5e1;
        }

        .btn-secondary:hover {
            background: #f1f5f9;
            transform: translateY(-2px);
        }

        /* 统一的 Section 样式 */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-badge {
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 16px;
        }

        /* 数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: var(--white);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: var(--card-shadow);
            border-top: 4px solid var(--primary);
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .about-features {
            margin: 20px 0;
            list-style: none;
        }

        .about-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 10px;
            color: var(--text-muted);
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 900;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .about-image-wrapper img {
            width: 100%;
            display: block;
            transition: var(--transition);
        }

        .about-image-wrapper:hover img {
            transform: scale(1.03);
        }

        /* 全平台AIGC服务 - 标签云与卡片 */
        .platform-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 900px;
            margin: 30px auto;
        }

        .platform-tag {
            background: var(--white);
            border: 1px solid #e2e8f0;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
        }

        .platform-tag:hover {
            border-color: var(--primary);
            background: var(--gradient-primary);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作 - 核心服务卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .service-card {
            background: var(--white);
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.02);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
            border-color: rgba(79, 70, 229, 0.2);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            background: rgba(79, 70, 229, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 24px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .solution-card {
            background: linear-gradient(180deg, var(--white) 0%, #f8fafc 100%);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid #edf2f7;
            box-shadow: var(--card-shadow);
        }

        .solution-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .solution-title::before {
            content: "";
            display: block;
            width: 4px;
            height: 20px;
            background: var(--gradient-primary);
            border-radius: 2px;
        }

        /* 流程步骤与时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: "";
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: #e2e8f0;
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::after {
            content: "";
            position: absolute;
            top: 30px;
            right: -8px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid var(--white);
            z-index: 1;
        }

        .timeline-item:nth-child(even)::after {
            left: -8px;
        }

        .timeline-content {
            background: var(--white);
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--card-shadow);
        }

        .timeline-content h4 {
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: var(--white);
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            margin: 30px 0;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid #edf2f7;
        }

        .compare-table th {
            background-color: #f1f5f9;
            font-weight: 700;
            color: var(--text-dark);
        }

        .compare-table tr:hover {
            background-color: #f8fafc;
        }

        .rating-badge {
            background: linear-gradient(90deg, #f59e0b 0%, #d97706 100%);
            color: var(--white);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
        }

        /* 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .case-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .case-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            padding: 2px 8px;
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        /* 表单板块 */
        .form-section {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
            border-radius: 20px;
            padding: 60px 40px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .form-wrapper {
            background: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: 8px;
            margin-bottom: 12px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: var(--transition);
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .faq-item.active .faq-answer {
            padding-bottom: 18px;
        }

        /* 评论区 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .comment-card {
            background: var(--white);
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--card-shadow);
            position: relative;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 15px;
            border-top: 1px solid #edf2f7;
            padding-top: 15px;
        }

        .comment-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary);
        }

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

        /* 知识库/文章 */
        .articles-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .articles-list li {
            background: var(--white);
            border-radius: 8px;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .articles-list li:hover {
            transform: translateY(-3px);
        }

        .articles-list a {
            display: block;
            padding: 20px;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
        }

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

        /* 友情链接 */
        .friend-links {
            background: #f1f5f9;
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
        }

        .friend-links a {
            margin: 0 10px;
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            text-decoration: none;
            font-size: 20px;
            border: none;
            position: relative;
        }

        .float-qr-box {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--white);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--card-shadow);
            display: none;
            text-align: center;
            width: 150px;
        }

        .float-qr-box img {
            width: 120px;
            height: auto;
        }

        .float-btn:hover .float-qr-box {
            display: block;
        }

        /* 统一页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 20px;
            font-size: 14px;
        }

        footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }

        footer a:hover {
            color: var(--white);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h5 {
            color: var(--white);
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
        }

        /* 响应式适配 */
        @media (max-width: 991px) {
            .menu-toggle {
                display: flex;
            }

            .nav-links {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                display: none;
            }

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

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

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item::after {
                left: 12px;
                right: auto;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }
        }