:root {
            --primary-color: #FF5A00;
            --primary-hover: #E04F00;
            --primary-light: #FFF5EE;
            --text-dark: #222222;
            --text-muted: #666666;
            --bg-light: #FAF9F6;
            --border-color: #EAEAEA;
            --container-width: 1200px;
            --transition-speed: 0.3s;
        }

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

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

        body {
            line-height: 1.6;
        }

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

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

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

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

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary-color);
            text-decoration: none;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color var(--transition-speed);
        }

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

        .nav-btn {
            background-color: var(--primary-color);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 4px;
            font-weight: 600 !important;
            transition: background var(--transition-speed);
        }

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

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

        /* 纯色渐变 Hero 首屏 */
        .hero {
            background: linear-gradient(135deg, #FFF9F5 0%, #FFF0E6 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            border-bottom: 1px solid #FFE4D3;
        }

        .hero-badge {
            background-color: rgba(255, 90, 0, 0.1);
            color: var(--primary-color);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            color: #111;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

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

        .btn-primary {
            background-color: var(--primary-color);
            color: #fff;
            padding: 14px 32px;
            border-radius: 6px;
            font-size: 1.05rem;
            font-weight: 600;
            text-decoration: none;
            transition: background var(--transition-speed), transform 0.2s;
            box-shadow: 0 4px 14px rgba(255, 90, 0, 0.3);
        }

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

        .btn-secondary {
            background-color: #fff;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 6px;
            font-size: 1.05rem;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-speed);
        }

        .btn-secondary:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }

        /* 核心特征数据指标卡片 */
        .features-bar {
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .feature-stat-card {
            background: #fff;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(255, 90, 0, 0.1);
            text-align: center;
        }

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

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

        /* 基础区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #111;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

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

        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .about-text h3 {
            font-size: 1.6rem;
            margin-bottom: 20px;
            color: #111;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 15px;
            line-height: 1.7;
        }

        .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 25px;
        }

        .about-tag {
            background-color: #fff;
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        .about-media-box {
            background-color: #fff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 35px rgba(0,0,0,0.03);
            text-align: center;
        }

        /* 全平台AIGC服务与模型聚合 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background-color: #fff;
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-speed);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(255, 90, 0, 0.08);
            border-color: var(--primary-color);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background-color: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: #111;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* 聚合平台列表标签云 */
        .platform-cloud {
            margin-top: 40px;
            background-color: #fff;
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .platform-cloud h4 {
            font-size: 1.1rem;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

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

        .platform-tag {
            background-color: var(--bg-light);
            padding: 6px 14px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
        }

        .platform-tag.highlight {
            background-color: var(--primary-light);
            color: var(--primary-color);
            border-color: rgba(255, 90, 0, 0.2);
        }

        /* 流程步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            position: relative;
        }

        .step-item {
            background-color: #fff;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .step-num {
            position: absolute;
            top: -15px;
            left: 20px;
            width: 32px;
            height: 32px;
            background-color: var(--primary-color);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .step-item h3 {
            margin-top: 10px;
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: #fff;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

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

        .comparison-table tr.highlight-row {
            background-color: var(--primary-light);
        }

        .comparison-table tr.highlight-row td {
            font-weight: 500;
        }

        .star-rating {
            color: var(--primary-color);
            font-weight: bold;
        }

        .score-badge {
            background-color: var(--primary-color);
            color: #fff;
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: bold;
        }

        /* Token比价与参数 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .token-card.best {
            border-color: var(--primary-color);
            box-shadow: 0 4px 15px rgba(255, 90, 0, 0.05);
            position: relative;
        }

        .token-card.best::before {
            content: '推荐';
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: var(--primary-color);
            color: #fff;
            font-size: 0.75rem;
            padding: 2px 6px;
            border-radius: 3px;
        }

        .token-card h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .token-price {
            font-size: 1.6rem;
            color: var(--primary-color);
            font-weight: 800;
            margin-bottom: 10px;
        }

        .token-card ul {
            list-style: none;
            font-size: 0.85rem;
            color: var(--text-muted);
            text-align: left;
            margin-top: 15px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .token-card ul li {
            margin-bottom: 6px;
        }

        /* 案例展示与图文 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-img-container {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: var(--bg-light);
        }

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

        .case-info {
            padding: 20px;
            flex-grow: 1;
        }

        .case-info h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.5;
        }

        /* 教育培训 */
        .train-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .train-list li {
            background-color: #fff;
            border: 1px solid var(--border-color);
            padding: 15px 20px;
            border-radius: 6px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 15px;
            font-weight: 500;
        }

        .train-list li::before {
            content: '✓';
            color: var(--primary-color);
            font-weight: bold;
        }

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

        .review-card {
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 25px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .review-content {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 15px;
            position: relative;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .author-info h4 {
            font-size: 0.9rem;
            margin-bottom: 2px;
        }

        .author-info p {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 帮助中心与百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }

        .wiki-card {
            background-color: #fff;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

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

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

        /* FAQ折叠面板 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: #fff;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-speed) ease-out;
            background-color: var(--bg-light);
        }

        .faq-answer-content {
            padding: 20px;
            font-size: 0.92rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* 行业资讯最新文章 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-card {
            background-color: #fff;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-card h4 {
            font-size: 1.05rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        .article-card a {
            color: var(--primary-color);
            text-decoration: none;
            font-size: 0.88rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 10px;
        }

        .article-card a:hover {
            text-decoration: underline;
        }

        /* 智能需求表单与联系方式 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-container {
            background-color: #fff;
            padding: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 0.95rem;
            transition: border var(--transition-speed);
            background-color: var(--bg-light);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            background-color: #fff;
        }

        .form-container button {
            width: 100%;
            background-color: var(--primary-color);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition-speed);
        }

        .form-container button:hover {
            background-color: var(--primary-hover);
        }

        .contact-info-panel {
            background-color: #fff;
            padding: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-item {
            margin-bottom: 25px;
        }

        .info-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--primary-color);
        }

        .info-item p {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        .qr-box {
            text-align: center;
            border: 1px dashed var(--border-color);
            padding: 15px;
            border-radius: 8px;
            margin-top: 15px;
        }

        .qr-box img {
            max-width: 120px;
            height: auto;
            margin-bottom: 8px;
        }

        .qr-box p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #1a1a1a;
            color: #fff;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

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

        .footer-about h3 {
            color: var(--primary-color);
            margin-bottom: 15px;
            font-size: 1.2rem;
        }

        .footer-about p {
            color: #aaa;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .footer-links h4 {
            margin-bottom: 15px;
            font-size: 1.05rem;
            color: #fff;
        }

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

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

        .footer-links ul li a {
            color: #aaa;
            text-decoration: none;
            transition: color var(--transition-speed);
        }

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

        .friend-links-section {
            border-top: 1px solid #333;
            padding-top: 25px;
            margin-top: 25px;
        }

        .friend-links-section h4 {
            font-size: 0.9rem;
            color: #888;
            margin-bottom: 10px;
        }

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

        .friend-links-wrap a {
            color: #888;
            text-decoration: none;
            font-size: 0.85rem;
            transition: color var(--transition-speed);
        }

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

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            color: #888;
            font-size: 0.8rem;
        }

        .footer-bottom a {
            color: #888;
            text-decoration: none;
        }

        /* 浮动客服 */
        .sticky-kf {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .kf-btn {
            background-color: var(--primary-color);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            font-weight: bold;
            font-size: 0.8rem;
            text-align: center;
            line-height: 1.2;
            border: none;
        }

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

        .kf-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            display: none;
            width: 150px;
            text-align: center;
        }

        .kf-popover img {
            width: 100%;
            height: auto;
            margin-bottom: 5px;
        }

        .kf-popover p {
            font-size: 0.75rem;
            color: var(--text-dark);
            margin: 0;
        }

        .kf-btn:hover .kf-popover {
            display: block;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .features-grid, .services-grid, .cases-grid, .reviews-grid, .token-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-top: 1px solid var(--border-color);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .features-grid, .services-grid, .cases-grid, .reviews-grid, .token-grid, .about-grid, .train-grid, .wiki-grid, .contact-grid, .footer-grid, .articles-grid {
                grid-template-columns: 1fr;
            }
            .step-timeline {
                grid-template-columns: 1fr;
            }
            .features-bar {
                margin-top: 20px;
            }
        }