:root {
            --primary-color: #ff5722;
            --primary-hover: #f4511e;
            --accent-color: #ff9800;
            --bg-color: #fffaf7;
            --card-bg: #ffffff;
            --text-main: #212121;
            --text-muted: #666666;
            --border-color: #fbe9e7;
            --container-max: 1200px;
            --transition: all 0.3s ease;
        }

        * {
            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(--bg-color);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

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

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(255, 87, 34, 0.05);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-color);
            letter-spacing: 0.5px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
        }

        .nav-links a {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
            border-radius: 4px;
        }

        .nav-links a:hover {
            color: var(--primary-color);
            background: #fff3e0;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(255, 87, 34, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 87, 34, 0.4);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
        }

        .btn-outline:hover {
            background: var(--primary-color);
            color: #ffffff;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--primary-color);
        }

        /* Hero 首屏 */
        .hero {
            padding: 80px 0 60px;
            background: linear-gradient(180deg, #fff3e0 0%, var(--bg-color) 100%);
            position: relative;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 87, 34, 0.1);
            color: var(--primary-color);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 87, 34, 0.2);
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 20px;
            line-height: 1.25;
        }

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

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 36px;
            line-height: 1.6;
        }

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

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .metric-card {
            background: var(--card-bg);
            padding: 24px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(255, 87, 34, 0.1);
        }

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

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
        }

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

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary-color);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(255, 87, 34, 0.12);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            font-size: 36px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-main);
        }

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

        /* 一站式制作工作流 */
        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .workflow-step {
            background: var(--card-bg);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
        }

        .step-num {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(255, 87, 34, 0.3);
        }

        .workflow-step h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--text-main);
        }

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

        /* 行业方案与服务网络 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-box {
            background: var(--card-bg);
            padding: 35px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .solution-box h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            padding: 6px 14px;
            background: #fff3e0;
            color: var(--primary-color);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 550;
            border: 1px solid rgba(255, 87, 34, 0.2);
        }

        /* 对比评测表格 */
        .comparison-container {
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        .comparison-table th {
            background: #fff3e0;
            color: var(--text-main);
            font-weight: 700;
        }

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

        .highlight-col {
            background: rgba(255, 87, 34, 0.04);
            font-weight: 600;
            color: var(--primary-color);
        }

        .rating-badge {
            display: inline-block;
            background: #ff5722;
            color: #fff;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: bold;
        }

        /* Token 比价与价格参考 */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pricing-card {
            background: var(--card-bg);
            padding: 35px 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: var(--transition);
            position: relative;
        }

        .pricing-card.popular {
            border-color: var(--primary-color);
            box-shadow: 0 8px 30px rgba(255, 87, 34, 0.15);
            transform: scale(1.03);
        }

        .popular-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary-color);
            color: #fff;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 700;
            border-radius: 10px;
            text-transform: uppercase;
        }

        .pricing-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .price {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .price span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: normal;
        }

        .pricing-features {
            margin-bottom: 30px;
            text-align: left;
        }

        .pricing-features li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .case-card, .article-card {
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .case-card:hover, .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(255,87,34,0.1);
        }

        .case-content, .article-content {
            padding: 24px;
        }

        .case-content h3, .article-content h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .case-content p, .article-content p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-link {
            font-size: 14px;
            color: var(--primary-color);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

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

        .testimonial-card {
            background: var(--card-bg);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
            line-height: 1.6;
        }

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

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #ffe0b2;
            color: var(--primary-color);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .author-info h4 {
            font-size: 15px;
            color: var(--text-main);
        }

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

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

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary-color);
            background: #fffaf7;
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 14px;
            color: var(--text-muted);
            background: #fff;
        }

        .faq-item.active .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        .faq-icon {
            font-size: 18px;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary-color);
        }

        /* 需求提交表单与联系我们 */
        .contact-section {
            background: linear-gradient(135deg, #fff3e0, #ffe0b2);
            border-radius: 16px;
            padding: 60px 40px;
            border: 1px solid rgba(255, 87, 34, 0.2);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .contact-info h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 15px;
        }

        .contact-info p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 15px;
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
        }

        .form-card {
            background: #ffffff;
            padding: 35px;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.05);
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #e0e0e0;
            border-radius: 6px;
            font-size: 14px;
            transition: var(--transition);
            outline: none;
            background: #fafafa;
        }

        .form-control:focus {
            border-color: var(--primary-color);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(255,87,34,0.1);
        }

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

        /* 友情链接与页脚 */
        footer {
            background: #1a1a1a;
            color: #cccccc;
            padding: 60px 0 30px;
        }

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

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 20px;
        }

        .footer-col p, .footer-col ul li {
            font-size: 14px;
            color: #aaaaaa;
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .footer-col ul li a {
            color: #aaaaaa;
            transition: var(--transition);
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            font-size: 13px;
            color: #888888;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid #333333;
            padding-top: 25px;
            text-align: center;
            font-size: 13px;
            color: #777777;
        }

        /* 浮动客服入口 */
        .float-support {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: var(--primary-color);
            color: #ffffff;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 20px rgba(255,87,34,0.4);
            cursor: pointer;
            transition: var(--transition);
        }

        .float-support:hover {
            transform: scale(1.1);
        }

        .support-popup {
            position: fixed;
            bottom: 100px;
            right: 30px;
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            width: 240px;
            text-align: center;
            z-index: 999;
            display: none;
            border: 1px solid var(--border-color);
        }

        .support-popup img {
            width: 160px;
            height: 160px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        .support-popup p {
            font-size: 13px;
            color: var(--text-main);
            font-weight: 600;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .metrics-grid, .workflow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .pricing-grid, .case-grid, .article-grid, .testimonial-grid, .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                width: 100%;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                gap: 10px;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 30px;
            }
            .metrics-grid, .services-grid, .workflow-steps, .pricing-grid, .case-grid, .article-grid, .testimonial-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
        }