:root {
            --primary: #7C3AED;
            --primary-hover: #6D28D9;
            --accent: #EC4899;
            --accent-light: #FDF2F8;
            --neutral-dark: #1F2937;
            --neutral-light: #F9FAFB;
            --neutral-bg: #F5F3FF;
            --border-color: #E5E7EB;
            --text-secondary: #4B5563;
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        nav a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

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

        .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(--neutral-dark);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* Hero首屏 - 亮紫绚烂风且无图片 */
        .hero {
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
                        linear-gradient(180deg, var(--neutral-bg) 0%, #ffffff 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-inner {
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(124, 58, 237, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
            border: 1px solid rgba(124, 58, 237, 0.2);
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--neutral-dark);
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 10px 20px rgba(124, 58, 237, 0.2);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(124, 58, 237, 0.3);
        }

        .btn-secondary {
            background: white;
            color: var(--neutral-dark);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: var(--neutral-light);
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .stat-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* 块通用样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .section-title h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--neutral-dark);
        }

        .section-title h2 span {
            color: var(--primary);
        }

        .section-title p {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--neutral-dark);
        }

        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .about-features {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .about-features li {
            position: relative;
            padding-left: 24px;
            font-weight: 500;
            font-size: 0.95rem;
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 800;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .about-image-wrapper img {
            width: 100%;
            display: block;
            object-fit: cover;
        }

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

        .service-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(124, 58, 237, 0.08);
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--neutral-dark);
        }

        .service-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tags span {
            background: var(--neutral-bg);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 一站式制作 & 行业解决方案 */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .flow-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            position: relative;
        }

        .flow-step {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .flow-card h3 {
            margin-top: 15px;
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .flow-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* 对比评测 */
        .compare-table-wrapper {
            overflow-x: auto;
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

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

        .compare-table th {
            background-color: var(--neutral-bg);
            font-weight: 700;
            color: var(--neutral-dark);
        }

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

        .compare-table td.highlight {
            color: var(--primary);
            font-weight: 600;
            background-color: rgba(124, 58, 237, 0.02);
        }

        .badge-star {
            background: linear-gradient(135deg, #F59E0B, #D97706);
            color: white;
            padding: 4px 8px;
            border-radius: 6px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* 价格比价与支持大模型 */
        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .model-tag {
            background: white;
            border: 1px solid var(--border-color);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
            transition: all 0.2s ease;
        }

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

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

        .training-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent);
            box-shadow: 0 10px 25px rgba(236, 72, 153, 0.08);
        }

        .training-icon {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--accent);
        }

        .training-card h3 {
            font-size: 1rem;
            margin-bottom: 10px;
            color: var(--neutral-dark);
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

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

        .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            color: var(--neutral-dark);
        }

        .case-info p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

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

        .review-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            position: relative;
        }

        .review-text {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--neutral-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .author-info h4 {
            font-size: 0.95rem;
            color: var(--neutral-dark);
        }

        .author-info span {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        /* 知识库/最新文章 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            transition: all 0.3s ease;
        }

        .article-card:hover {
            border-color: var(--primary);
        }

        .article-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
        }

        .article-card a {
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: "+";
            font-size: 1.5rem;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            border-top: 0px solid var(--border-color);
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 20px 24px;
            border-top: 1px solid var(--border-color);
        }

        /* 需求匹配与联系我们表单 */
        .contact-section {
            background: var(--neutral-bg);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: start;
        }

        .form-wrapper {
            background: white;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.3s ease;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234B5563' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            background-size: 16px;
        }

        .submit-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            font-size: 1rem;
            box-shadow: 0 5px 15px rgba(124, 58, 237, 0.2);
            transition: opacity 0.3s ease;
        }

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

        .contact-info {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
        }

        .contact-info h3 {
            font-size: 1.3rem;
            margin-bottom: 24px;
        }

        .contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 30px;
        }

        .contact-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
        }

        .contact-icon {
            color: var(--primary);
            font-weight: bold;
        }

        .qr-wrapper {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        .qr-wrapper img {
            width: 130px;
            height: 130px;
            margin-bottom: 8px;
        }

        .qr-wrapper p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: white;
            margin-bottom: 16px;
            font-size: 1.25rem;
        }

        .footer-brand p {
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .footer-links h4 {
            color: white;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #9CA3AF;
        }

        .footer-links a:hover {
            color: white;
        }

        .friend-links-area {
            border-top: 1px solid #1F2937;
            padding-top: 30px;
            margin-bottom: 30px;
        }

        .friend-links-title {
            color: white;
            font-size: 0.95rem;
            margin-bottom: 15px;
            font-weight: 600;
        }

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

        .friend-links-list a {
            color: #6B7280;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }

        .friend-links-list a:hover {
            color: white;
        }

        .copyright-area {
            border-top: 1px solid #1F2937;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
        }

        /* 浮动客服 & 返回顶部 */
        .float-widget {
            position: fixed;
            right: 20px;
            bottom: 40px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .widget-item {
            width: 50px;
            height: 50px;
            background: white;
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

        .widget-item:hover {
            background: var(--primary);
            color: white;
            transform: scale(1.05);
        }

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

        .widget-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: white;
            padding: 10px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 140px;
        }

        .widget-qr img {
            width: 120px;
            height: 120px;
        }

        .widget-qr p {
            font-size: 0.75rem;
            color: var(--neutral-dark);
            margin-top: 4px;
        }

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

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
                padding: 20px;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 15px;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid, .articles-grid, .case-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .copyright-area {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }