:root {
            --primary: #6C5DD3;
            --primary-light: #EBE8FF;
            --secondary: #FF7551;
            --dark: #1F1D2B;
            --light-bg: #F9F9FC;
            --card-bg: #FFFFFF;
            --text-main: #333333;
            --text-muted: #666666;
            --border-color: #EAEAEF;
            --gradient: linear-gradient(135deg, #6C5DD3 0%, #FF7551 100%);
            --glow: 0 10px 30px rgba(108, 93, 211, 0.15);
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .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(10px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
        }

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

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

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 5px 10px;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-btn {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
        }

        .nav-btn:hover {
            background: var(--dark);
            box-shadow: var(--glow);
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 3px;
            transition: 0.3s;
        }

        /* Hero首屏 - 严禁出现图片 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(235, 232, 255, 0.6) 0%, rgba(255, 255, 255, 1) 70%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: var(--primary-light);
            border-radius: 50%;
            filter: blur(100px);
            top: -100px;
            left: -100px;
            z-index: 1;
            opacity: 0.5;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

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

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            padding: 0 20px;
        }

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

        .btn-main {
            background: var(--gradient);
            color: #fff;
            padding: 14px 32px;
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: 600;
            box-shadow: var(--glow);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 35px rgba(108, 93, 211, 0.25);
        }

        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 12px 30px;
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: 600;
        }

        .btn-secondary:hover {
            background: var(--primary-light);
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 60px 0;
            background-color: var(--card-bg);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            text-align: center;
        }

        .stat-card {
            padding: 20px;
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            display: block;
        }

        .stat-label {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 板块公用标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 700;
            position: relative;
            display: inline-block;
        }

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

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .section-padding {
            padding: 90px 0;
        }

        /* 平台介绍 & 关于我们 */
        .about-section {
            background-color: var(--light-bg);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .feature-item {
            background-color: var(--card-bg);
            padding: 15px 20px;
            border-radius: 10px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
        }

        .feature-item h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .feature-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 全平台AIGC服务 */
        .services-section {
            background-color: var(--card-bg);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            transition: all 0.3s ease;
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

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

        .service-tag {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--primary);
        }

        /* 标签云组件 */
        .tag-cloud-section {
            background-color: var(--light-bg);
            padding: 50px 0;
            text-align: center;
        }

        .tag-cloud-wrap {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .cloud-tag {
            background: var(--card-bg);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-main);
            box-shadow: 0 4px 10px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .cloud-tag.highlight {
            background: var(--gradient);
            color: #fff;
            border: none;
        }

        /* 一站式AIGC制作 & 标准化流程 */
        .workflow-section {
            background-color: var(--card-bg);
        }

        .workflow-timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .workflow-timeline::before {
            content: '';
            position: absolute;
            width: 4px;
            background: var(--primary-light);
            top: 0;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: #fff;
            border: 4px solid var(--primary);
            border-radius: 50%;
            top: 15px;
            z-index: 1;
        }

        .timeline-left {
            left: 0;
            text-align: right;
        }

        .timeline-right {
            left: 50%;
        }

        .timeline-right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px;
            background: var(--light-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .compare-section {
            background-color: var(--light-bg);
        }

        .compare-header-box {
            background: var(--gradient);
            color: #fff;
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            margin-bottom: 40px;
            box-shadow: var(--glow);
        }

        .compare-header-box h3 {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }

        .compare-score {
            font-size: 3rem;
            font-weight: 800;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: var(--card-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

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

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

        .compare-table th {
            background-color: #F4F3FA;
            color: var(--dark);
            font-weight: 600;
        }

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

        .compare-table td strong {
            color: var(--primary);
        }

        /* 解决方案 & 技术标准 & 全国网络 */
        .solutions-section {
            background-color: var(--card-bg);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

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

        .solution-card:hover {
            box-shadow: var(--glow);
            transform: translateY(-3px);
        }

        .solution-info {
            padding: 24px;
        }

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

        .solution-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        /* Token比价 */
        .token-section {
            background-color: var(--light-bg);
        }

        /* 培训业务 */
        .training-section {
            background-color: var(--card-bg);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }

        .training-card {
            background-color: var(--light-bg);
            border-top: 4px solid var(--primary);
            border-radius: 8px;
            padding: 24px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .training-card h3 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

        /* 案例中心 - 非首屏区域展示图片 */
        .case-section {
            background-color: var(--light-bg);
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #eee;
        }

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

        .case-body {
            padding: 20px;
        }

        .case-body h3 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 客户评论 */
        .reviews-section {
            background-color: var(--card-bg);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .review-card {
            background-color: var(--light-bg);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.1rem;
        }

        .review-meta h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }

        .review-meta span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .review-content {
            font-size: 0.9rem;
            color: var(--text-main);
            font-style: italic;
        }

        /* 帮助中心 FAQ */
        .faq-section {
            background-color: var(--light-bg);
        }

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

        .faq-item {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--primary);
            transition: transform 0.3s;
        }

        .faq-item.active .faq-question::after {
            content: '−';
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #FAF9FD;
        }

        .faq-answer-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* AI术语百科 */
        .wiki-section {
            background-color: var(--card-bg);
        }

        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .wiki-card {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            background-color: #fff;
        }

        .wiki-card h3 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .wiki-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 知识库与文章 */
        .articles-section {
            background-color: var(--light-bg);
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 30px;
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
        }

        .article-card h3 {
            font-size: 1.05rem;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-card a {
            color: var(--dark);
        }

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

        .article-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: block;
            margin-top: 10px;
        }

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

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info-panel {
            background: var(--light-bg);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .contact-info-panel h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 25px;
        }

        .contact-method {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 25px;
        }

        .contact-method-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: bold;
            flex-shrink: 0;
        }

        .contact-method-text h4 {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .contact-method-text p {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qr-item {
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            margin-bottom: 8px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
        }

        .form-panel {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--glow);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            color: var(--dark);
            outline: none;
            background-color: var(--light-bg);
        }

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

        textarea.form-control {
            height: 120px;
            resize: vertical;
        }

        .submit-btn {
            width: 100%;
            background: var(--gradient);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            box-shadow: var(--glow);
        }

        .submit-btn:hover {
            opacity: 0.95;
        }

        /* 友情链接 */
        .friends-section {
            background-color: var(--light-bg);
            padding: 30px 0;
            border-top: 1px solid var(--border-color);
        }

        .friends-wrap {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .friends-wrap a {
            color: var(--text-muted);
        }

        .friends-wrap a:hover {
            color: var(--primary);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #A2A0B2;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

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

        .footer-logo-area h3 {
            color: #fff;
            margin-bottom: 15px;
        }

        .footer-logo-area p {
            line-height: 1.8;
        }

        .footer-col h4 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #2F2D3B;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 悬浮客服 */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            background: var(--gradient);
            color: #fff;
            width: 54px;
            height: 54px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(108, 93, 211, 0.4);
            cursor: pointer;
            font-weight: bold;
            font-size: 0.85rem;
            text-align: center;
            line-height: 1.2;
        }

        .float-qr-box {
            position: absolute;
            bottom: 65px;
            right: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            width: 150px;
        }

        .float-qr-box img {
            width: 120px;
            height: 120px;
            margin-bottom: 6px;
        }

        .float-qr-box p {
            color: var(--dark);
            font-size: 0.75rem;
            margin: 0;
        }

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

        /* 响应式适配 */
        @media (max-width: 992px) {
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .timeline-item {
                width: 100%;
                padding-left: 30px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item::after {
                left: -8px !important;
            }

            .workflow-timeline::before {
                left: 0;
            }

            .timeline-right {
                left: 0;
            }

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

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                display: none;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }

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

            .menu-toggle {
                display: flex;
            }

            .hero {
                padding: 130px 0 70px;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

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