:root {
            --primary: #10B981;
            --primary-dark: #059669;
            --primary-light: #E6F4EA;
            --accent: #06B6D4;
            --text-dark: #1F2937;
            --text-light: #4B5563;
            --bg-light: #F9FAFB;
            --bg-white: #FFFFFF;
            --border-color: #E5E7EB;
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px 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;
        }

        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;
            overflow-x: hidden;
            scroll-behavior: smooth;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        header.scrolled {
            box-shadow: var(--shadow-md);
            height: 60px;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

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

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

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 1px;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-light);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
            padding: 6px 10px;
            border-radius: 4px;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: white !important;
            padding: 8px 18px !important;
            border-radius: 20px !important;
            box-shadow: var(--shadow-sm);
        }

        .nav-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }

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

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

        /* Hero 首屏 (无图设计，采用几何动态渐变与卡片排版) */
        .hero {
            padding: 160px 0 80px;
            background: radial-gradient(circle at 10% 20%, rgba(16, 185, 129, 0.08) 0%, rgba(255, 255, 255, 0) 90%), var(--bg-white);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-dark);
            max-width: 800px;
            margin: 0 auto 20px;
        }

        .hero p.lead {
            font-size: 18px;
            color: var(--text-light);
            max-width: 650px;
            margin: 0 auto 35px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

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

        .btn-secondary:hover {
            background-color: var(--bg-light);
            border-color: #D1D5DB;
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            background: white;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

        /* 通用区块设置 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 55px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-light);
        }

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

        .service-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

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

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

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

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

        /* 关于我们 (平台介绍) */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 16px;
        }

        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
        }

        .tag-item {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(16, 185, 129, 0.1);
        }

        .about-image-wrapper {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .about-image-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }

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

        .step-item {
            position: relative;
            text-align: center;
            padding: 20px;
        }

        .step-number {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
        }

        .step-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        th, td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        th {
            background-color: var(--bg-light);
            font-weight: 600;
            color: var(--text-dark);
        }

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

        .highlight-col {
            background-color: rgba(16, 185, 129, 0.03);
            font-weight: 600;
        }

        .badge-star {
            color: #F59E0B;
            font-weight: bold;
        }

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

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

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .case-img-container {
            width: 100%;
            height: 240px;
            overflow: hidden;
        }

        .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: 24px;
        }

        .case-info h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

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

        /* 需求表单 */
        .form-layout {
            background: white;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            max-width: 800px;
            margin: 0 auto;
            padding: 40px;
        }

        .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-dark);
        }

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

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

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

        .comment-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

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

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

        .comment-content {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* 资讯列表 */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
            margin: 0 auto;
        }

        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 20px;
            background: white;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            text-decoration: none;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .news-item:hover {
            border-color: var(--primary);
            transform: translateX(4px);
        }

        .news-title {
            font-weight: 600;
            font-size: 15px;
        }

        .news-date {
            font-size: 13px;
            color: var(--text-light);
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            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(--primary);
            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;
            background-color: var(--bg-light);
        }

        .faq-answer-inner {
            padding: 18px 24px;
            font-size: 14px;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
        }

        /* AI 术语百科 & 代理 */
        .dual-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .wiki-card, .agent-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
        }

        .term-item {
            margin-bottom: 20px;
        }

        .term-item h4 {
            color: var(--primary-dark);
            margin-bottom: 6px;
            font-size: 16px;
        }

        .term-item p {
            font-size: 13px;
            color: var(--text-light);
        }

        /* 联络区域与加盟代理 */
        .contact-info-wrapper {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 40px;
        }

        .contact-details {
            background: white;
            padding: 32px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 24px;
        }

        .contact-card-item {
            background: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
        }

        .contact-card-item h4 {
            margin-bottom: 8px;
            color: var(--primary-dark);
        }

        .contact-card-item p {
            font-size: 14px;
            color: var(--text-light);
        }

        .contact-qr {
            background: white;
            padding: 32px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .contact-qr img {
            width: 150px;
            height: 150px;
            margin-bottom: 16px;
            border: 1px solid var(--border-color);
            padding: 6px;
            background: white;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 20px;
            font-size: 14px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
            border-bottom: 1px solid #374151;
            padding-bottom: 40px;
        }

        .footer-logo {
            color: white;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

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

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

        .footer-links a {
            color: #9CA3AF;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: #9CA3AF;
            text-decoration: none;
            background: #1F2937;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            font-size: 12px;
        }

        /* 悬浮小挂件 */
        .floating-widget {
            position: fixed;
            right: 24px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .widget-item {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: white;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            color: var(--primary-dark);
            font-size: 20px;
        }

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

        .widget-qr-box {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: white;
            padding: 12px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: none;
            width: 140px;
            text-align: center;
        }

        .widget-qr-box img {
            width: 100%;
            height: auto;
        }

        .widget-item:hover .widget-qr-box {
            display: block;
        }

        /* 移动端响应式兼容 */
        @media (max-width: 1024px) {
            .grid-3, .stats-grid, .steps-container, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-layout, .dual-grid, .contact-info-wrapper, .case-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 32px;
            }
            .stats-grid, .grid-3, .steps-container, .comments-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
        }