:root {
            --primary: #00c853;
            --primary-dark: #009624;
            --primary-light: #e8f5e9;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --accent: #10b981;
            --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, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .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;
        }

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

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

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

        .nav-btn {
            background: var(--primary);
            color: white !important;
            padding: 8px 18px;
            border-radius: 6px;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-main);
            transition: var(--transition);
        }

        /* Hero 首屏 - 无图片设计 */
        .hero {
            position: relative;
            background: radial-gradient(circle at 80% 20%, var(--primary-light) 0%, var(--bg-white) 70%);
            padding: 100px 0 80px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,200,83,0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(0, 200, 83, 0.2);
        }

        h1.hero-title {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        h1.hero-title span {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 50px;
        }

        .btn-primary {
            background: var(--primary);
            color: white;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            box-shadow: 0 4px 14px rgba(0, 200, 83, 0.4);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 200, 83, 0.5);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-main);
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

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

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

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

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

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

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

        .section-bg {
            background: var(--bg-white);
        }

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

        .section-tag {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* 关于我们 / 平台介绍 */
        .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .about-list {
            margin: 24px 0;
            list-style: none;
        }

        .about-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-size: 15px;
        }

        .about-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 900;
            font-size: 18px;
        }

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

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

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

        .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        /* 标签云 - 支持模型列表 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 30px;
        }

        .tag-item {
            background: var(--bg-light);
            color: var(--text-main);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary);
        }

        /* 一站式AIGC制作 & 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

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

        .sol-body {
            padding: 30px;
        }

        .sol-body h3 {
            font-size: 22px;
            margin-bottom: 12px;
        }

        .sol-body p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .sol-features {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .sol-features li {
            font-size: 13px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .sol-features li::before {
            content: "●";
            color: var(--primary);
            font-size: 8px;
        }

        /* 流程步骤 */
        .steps-flow {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .steps-flow::before {
            content: '';
            position: absolute;
            top: 25px;
            left: 50px;
            right: 50px;
            height: 2px;
            background: var(--border-color);
            z-index: 1;
        }

        .step-node {
            position: relative;
            z-index: 2;
            text-align: center;
            flex: 1;
            padding: 0 10px;
        }

        .step-num {
            width: 50px;
            height: 50px;
            background: var(--primary);
            color: white;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 700;
            font-size: 18px;
            box-shadow: 0 0 0 6px var(--primary-light);
        }

        .step-node h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .step-node p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 对比评测与比价表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--bg-white);
            box-shadow: var(--shadow);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

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

        .compare-table th {
            background: var(--bg-light);
            font-weight: 700;
            color: var(--text-main);
        }

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

        .compare-table tr.highlight {
            background: rgba(0, 200, 83, 0.03);
        }

        .compare-table tr.highlight td {
            font-weight: 600;
        }

        .rating-badge {
            background: #fff9db;
            color: #f59f00;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 13px;
            display: inline-block;
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .case-img-wrap {
            position: relative;
            padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
            background: var(--bg-light);
            overflow: hidden;
        }

        .case-img-wrap img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .case-content {
            padding: 20px;
        }

        .case-content h4 {
            font-size: 18px;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .case-content p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .training-icon {
            font-size: 28px;
            margin-bottom: 12px;
            display: block;
        }

        .training-card h4 {
            font-size: 15px;
            font-weight: 700;
            line-height: 1.4;
        }

        /* 帮助中心 & FAQ */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-btn {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-btn::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            font-weight: bold;
            transition: var(--transition);
        }

        .faq-item.active .faq-btn::after {
            content: "−";
            transform: rotate(180deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--bg-light);
        }

        .faq-content p {
            padding: 20px 24px;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 1px solid var(--border-color);
        }

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

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

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

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

        .review-info h4 {
            font-size: 15px;
            font-weight: 700;
        }

        .review-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 文章列表区块 */
        .article-list {
            list-style: none;
        }

        .article-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 16px 20px;
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

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

        .article-item a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
        }

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

        /* 智能匹配与联系我们表单 */
        .contact-section {
            background: var(--bg-white);
        }

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

        .contact-info h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }

        .info-item {
            display: flex;
            gap: 15px;
            margin-bottom: 20px;
        }

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

        .info-detail h4 {
            font-size: 15px;
            margin-bottom: 4px;
        }

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

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

        .qr-card {
            text-align: center;
            background: var(--bg-light);
            padding: 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            width: 140px;
        }

        .qr-card img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .qr-card span {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 600;
        }

        .contact-form {
            background: var(--bg-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background: var(--bg-white);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 200, 83, 0.15);
        }

        textarea.form-control {
            height: 100px;
            resize: vertical;
        }

        .btn-submit {
            width: 100%;
            background: var(--primary);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            background: var(--primary-dark);
        }

        /* 友情链接与页脚 */
        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 20px;
        }

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

        .footer-brand h3 {
            color: white;
            margin-bottom: 16px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
        }

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

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

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

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .friend-links {
            border-top: 1px solid #334155;
            padding: 24px 0;
            margin-top: 20px;
        }

        .friend-links h4 {
            color: white;
            font-size: 14px;
            margin-bottom: 12px;
        }

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

        .friend-links-list a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
        }

        /* 侧边悬浮客服 */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 80px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

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

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

        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 16px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 160px;
        }

        .float-item:hover .popover {
            display: block;
        }

        .float-item .popover img {
            width: 100%;
            height: auto;
            margin-bottom: 8px;
        }

        .float-item .popover p {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 600;
        }

        .back-to-top {
            display: none;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3, .case-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

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

            .menu-toggle {
                display: flex;
            }

            h1.hero-title {
                font-size: 28px;
            }

            .about-wrap, .solutions-grid, .contact-wrap, .footer-grid {
                grid-template-columns: 1fr;
            }

            .steps-flow {
                flex-direction: column;
                gap: 30px;
            }

            .steps-flow::before {
                display: none;
            }

            .grid-3, .case-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }

            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }