:root {
            --primary: #4f46e5;
            --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
            --secondary-gradient: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --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;
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        /* 统一容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

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

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

        .nav-links {
            display: flex;
            gap: 24px;
            align-items: center;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-btn {
            background: var(--primary-gradient);
            color: #ffffff !important;
            padding: 8px 20px;
            border-radius: 99px;
            font-size: 14px !important;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
        }

        .nav-btn:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* Hero首屏 - 无图，亮彩渐变背景加几何纹理 */
        .hero {
            background: radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.15) 0%, rgba(99, 102, 241, 0.05) 50%, rgba(255, 255, 255, 0) 100%), #ffffff;
            padding: 100px 0 80px;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            display: inline-block;
            background: linear-gradient(90deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 99px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.25;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 20px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #ffffff;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168, 85, 247, 0.4);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: var(--bg-light);
            border-color: #cbd5e1;
        }

        /* 模块基础样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-light {
            background-color: var(--bg-white);
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stat-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 24px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(99, 102, 241, 0.1);
            border-color: #6366f1;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            background: var(--secondary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

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

        /* 平台/软件介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-content h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }

        .intro-features {
            list-style: none;
            margin-top: 24px;
        }

        .intro-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            color: var(--text-muted);
        }

        .intro-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #10b981;
            font-weight: bold;
        }

        /* 全平台AIGC服务体系 & 核心场景 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
            transition: var(--transition);
        }

        .service-card:hover {
            background: #ffffff;
            transform: translateY(-4px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: #a855f7;
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-gradient);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

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

        /* 支持的AI平台标签云 */
        .platform-cloud {
            margin-top: 40px;
            background: #ffffff;
            padding: 32px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .platform-cloud h4 {
            text-align: center;
            margin-bottom: 20px;
            color: var(--text-muted);
        }

        .tags-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .platform-tag {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 99px;
            font-size: 13px;
            color: var(--text-dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .platform-tag:hover {
            background: var(--primary-gradient);
            color: #ffffff;
            border-color: transparent;
            transform: scale(1.05);
        }

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

        .step-item {
            text-align: center;
            position: relative;
        }

        .step-number {
            width: 60px;
            height: 60px;
            background: var(--primary-gradient);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(168, 85, 247, 0.2);
        }

        .step-item h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        /* 客户案例 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.08);
        }

        .case-image-wrapper {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #f1f5f9;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        /* 评测与对比 */
        .review-score-box {
            background: var(--primary-gradient);
            color: #ffffff;
            border-radius: 16px;
            padding: 40px;
            text-align: center;
            margin-bottom: 40px;
            box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
        }

        .rating-num {
            font-size: 72px;
            font-weight: 900;
            line-height: 1;
            margin-bottom: 10px;
        }

        .rating-stars {
            font-size: 28px;
            color: #fbbf24;
            margin-bottom: 10px;
        }

        .table-responsive {
            overflow-x: auto;
            background: #ffffff;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

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

        .comparison-table th {
            background-color: var(--bg-light);
            font-weight: 600;
        }

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

        .tag-highlight {
            background: #d1fae5;
            color: #065f46;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .token-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            position: relative;
        }

        .token-card.popular {
            border-color: #a855f7;
            box-shadow: 0 8px 24px rgba(168, 85, 247, 0.1);
        }

        .token-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--primary-gradient);
            color: #ffffff;
            font-size: 11px;
            padding: 3px 10px;
            border-radius: 99px;
            font-weight: bold;
        }

        .token-price {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-dark);
            margin: 20px 0;
        }

        .token-price span {
            font-size: 16px;
            font-weight: normal;
            color: var(--text-muted);
        }

        /* 智能需求匹配与表单 */
        .form-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: start;
        }

        .form-intro h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .contact-method-list {
            margin-top: 30px;
            list-style: none;
        }

        .contact-method-list li {
            margin-bottom: 16px;
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .contact-method-list strong {
            color: var(--primary);
        }

        .match-form {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 15px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: #6366f1;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
        }

        .form-submit-btn {
            width: 100%;
            background: var(--primary-gradient);
            color: #ffffff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .form-submit-btn:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

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

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

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            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 {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
        }

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

        /* 术语百科 & 自助排查 */
        .utility-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .utility-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
        }

        .utility-box h3 {
            font-size: 20px;
            margin-bottom: 20px;
            border-left: 4px solid #a855f7;
            padding-left: 12px;
        }

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

        .utility-list li {
            margin-bottom: 16px;
            padding-bottom: 16px;
            border-bottom: 1px dashed var(--border-color);
        }

        .utility-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .utility-list strong {
            display: block;
            font-size: 15px;
            margin-bottom: 4px;
        }

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

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

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

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

        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--secondary-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .user-meta h4 {
            font-size: 15px;
            margin-bottom: 2px;
        }

        .user-meta span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 知识库 / 新闻文章 */
        .articles-wrapper {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
        }

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

        .articles-list li {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

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

        .articles-list a {
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }

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

        .article-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* 底部信息区 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            height: 40px;
            margin-bottom: 16px;
        }

        .footer-desc {
            max-width: 320px;
            margin-bottom: 16px;
        }

        .footer-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friendship-links {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friendship-links a {
            color: #64748b;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 浮动客服 */
        .sticky-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            text-align: center;
            max-width: 140px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .sticky-kefu:hover {
            transform: translateY(-4px);
        }

        .sticky-kefu img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 4px;
        }

        .sticky-kefu span {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-dark);
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 20px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .token-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 32px;
            }
            .intro-grid, .form-layout, .utility-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .process-steps, .case-grid, .token-grid, .comments-grid, .stats-grid {
                grid-template-columns: 1fr;
            }
            .sticky-kefu {
                display: none; /* 移动端隐藏悬浮二维码以防遮挡 */
            }
        }