:root {
            --primary: #10b981;
            --primary-hover: #059669;
            --primary-light: #f0fdf4;
            --secondary: #0d9488;
            --dark: #1e293b;
            --text: #475569;
            --text-dark: #0f172a;
            --light: #f8fafc;
            --border: #e2e8f0;
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            color: var(--text);
            background-color: var(--light);
        }

        body {
            line-height: 1.6;
        }

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

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

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

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

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

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: white !important;
            padding: 8px 16px;
            border-radius: 6px;
            transition: var(--transition);
        }

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

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

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

        /* Hero首屏 */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #f0fdf4 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(16,185,129,0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 40%;
            height: 40%;
            background: radial-gradient(circle, rgba(13,148,136,0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.5rem;
            color: var(--text-dark);
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .hero p {
            font-size: 1.1rem;
            color: var(--text);
            margin-bottom: 30px;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        .btn-primary {
            display: inline-block;
            background-color: var(--primary);
            color: white;
            text-decoration: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .btn-secondary {
            display: inline-block;
            background-color: white;
            color: var(--primary);
            border: 1px solid var(--primary);
            text-decoration: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
        }

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

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

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

        .stat-card h3 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-card p {
            font-size: 0.9rem;
            color: var(--text);
            margin-bottom: 0;
        }

        /* 常规Section结构 */
        section {
            padding: 80px 0;
            background-color: white;
        }

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

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

        .section-header h2 {
            font-size: 2rem;
            color: var(--text-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background-color: var(--primary);
            margin: 10px auto 0 auto;
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text);
            font-size: 1rem;
        }

        /* 全平台AIGC服务 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--light);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
        }

        .section-alt .service-card {
            background-color: white;
        }

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

        .service-card .icon-box {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
        }

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

        .service-card p {
            font-size: 0.95rem;
            color: var(--text);
        }

        /* 标签云 */
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 30px;
        }

        .tag-item {
            background-color: var(--primary-light);
            color: var(--secondary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(16, 185, 129, 0.15);
        }

        /* 一站式AIGC制作 & 素材排版 */
        .production-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .production-image-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .production-image-grid img {
            width: 100%;
            border-radius: 12px;
            box-shadow: var(--shadow);
            object-fit: cover;
            height: 250px;
            transition: var(--transition);
        }

        .production-image-grid img:hover {
            transform: scale(1.02);
        }

        .production-text ul {
            list-style: none;
            margin-top: 20px;
        }

        .production-text ul li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .production-text ul li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* 标准化AIGC流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .process-step .step-number {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px auto;
            font-weight: bold;
        }

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

        .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);
        }

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

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

        .comparison-table .highlight {
            background-color: var(--primary-light);
            font-weight: 600;
            color: var(--primary-hover);
        }

        .score-badge {
            background-color: #fef08a;
            color: #854d0e;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: bold;
            display: inline-block;
        }

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

        .case-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }

        .case-card img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .case-body {
            padding: 24px;
            flex-grow: 1;
        }

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

        .case-body p {
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 0;
        }

        /* 职业技术培训 / 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .training-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .training-card h3 {
            font-size: 1.15rem;
            color: var(--text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .training-card h3::before {
            content: "■";
            color: var(--primary);
            font-size: 0.8rem;
        }

        .training-card p {
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        .training-tag {
            display: inline-block;
            background-color: var(--light);
            color: var(--text-dark);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* 常见用户问题 FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            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;
            background-color: var(--light);
        }

        .faq-answer-inner {
            padding: 20px;
            border-top: 1px solid var(--border);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

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

        .comment-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-style: italic;
            font-size: 0.95rem;
            margin-bottom: 20px;
            position: relative;
        }

        .comment-text::before {
            content: "“";
            font-size: 3rem;
            color: rgba(16, 185, 129, 0.1);
            position: absolute;
            top: -20px;
            left: -10px;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 15px;
        }

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

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

        .comment-info p {
            font-size: 0.8rem;
            color: var(--text);
            margin-bottom: 0;
        }

        /* 行业资讯 / 知识库 */
        .news-section {
            background-color: white;
        }

        .news-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .news-item a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
        }

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

        .news-date {
            font-size: 0.85rem;
            color: var(--text);
        }

        /* 智能需求匹配与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-card {
            background: white;
            padding: 35px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .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 {
            grid-column: span 2;
        }

        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 6px;
            outline: none;
            font-family: inherit;
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        .contact-info-card {
            background: white;
            padding: 35px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

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

        .qr-box img {
            width: 140px;
            height: 140px;
            margin-bottom: 10px;
        }

        .info-item h4 {
            color: var(--text-dark);
            margin-bottom: 5px;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .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: var(--primary);
        }

        .friend-links {
            border-top: 1px solid #334155;
            padding-top: 20px;
            margin-bottom: 20px;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            margin-right: 15px;
            display: inline-block;
            font-size: 0.85rem;
            transition: var(--transition);
        }

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

        .copyright-bar {
            border-top: 1px solid #334155;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 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;
            background-color: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary-hover);
            transform: scale(1.1);
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            display: none;
            border: 1px solid var(--border);
            text-align: center;
            width: 150px;
        }

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

        .qr-popover p {
            color: var(--text-dark);
            font-size: 0.75rem;
            margin-top: 5px;
        }

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

        /* 动画支持 */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                box-shadow: var(--shadow-lg);
                gap: 15px;
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .production-layout {
                grid-template-columns: 1fr;
            }

            .process-flow {
                grid-template-columns: 1fr;
            }

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

            .contact-layout {
                grid-template-columns: 1fr;
            }

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

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

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }