:root {
            --primary-gradient: linear-gradient(135deg, #ff6b6b, #ff8e53, #4ecdc4, #45b7d1, #6c5ce7);
            --rainbow-1: #ff6b6b;
            --rainbow-2: #ff8e53;
            --rainbow-3: #4ecdc4;
            --rainbow-4: #45b7d1;
            --rainbow-5: #6c5ce7;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-main: #faf9f6;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --container-max-width: 1200px;
        }

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

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }

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

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

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

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-menu a {
            color: var(--text-main);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-menu a:hover {
            color: var(--rainbow-5);
        }

        .nav-btns {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .ai-page-home-link {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
        }

        .btn-visit-site {
            background: var(--primary-gradient);
            background-size: 200% auto;
            color: #ffffff;
            padding: 8px 18px;
            border-radius: 30px;
            text-decoration: none;
            font-size: 14px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.2);
            transition: 0.5s;
        }

        .btn-visit-site:hover {
            background-position: right center;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            transition: 0.3s;
        }

        /* Hero首屏 (无图片) */
        .hero-section {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 10% 20%, rgba(255, 107, 107, 0.05) 0%, rgba(108, 92, 231, 0.05) 90%);
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            background: linear-gradient(90deg, rgba(255,107,107,0.1), rgba(108,92,231,0.1));
            border: 1px solid rgba(108,92,231,0.2);
            color: var(--rainbow-5);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

        .hero-title span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--primary-gradient);
            background-size: 200% auto;
            color: #ffffff;
            padding: 14px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-size: 16px;
            font-weight: bold;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
            transition: 0.5s;
        }

        .btn-primary:hover {
            background-position: right center;
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--text-main);
            border: 2px solid var(--border-color);
            padding: 12px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-size: 16px;
            font-weight: bold;
            transition: all 0.3s;
        }

        .btn-secondary:hover {
            border-color: var(--rainbow-5);
            color: var(--rainbow-5);
        }

        /* 统计指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 25px 20px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(108, 92, 231, 0.1);
            border-color: rgba(108, 92, 231, 0.3);
        }

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--rainbow-5);
            margin-bottom: 5px;
        }

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

        /* 通用区块样式 */
        .section-padding {
            padding: 100px 0;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            background-color: rgba(78, 205, 196, 0.1);
            color: var(--rainbow-3);
            font-size: 12px;
            font-weight: bold;
            margin-bottom: 15px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 15px;
        }

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

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

        .service-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 35px 30px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-gradient);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
            border-color: transparent;
        }

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

        .service-icon {
            font-size: 40px;
            margin-bottom: 20px;
            display: inline-block;
        }

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

        .service-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .service-tag {
            font-size: 11px;
            background-color: var(--bg-main);
            color: var(--text-main);
            padding: 3px 8px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* 一站式制作场景 */
        .production-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .production-content h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .production-list {
            list-style: none;
            margin-bottom: 30px;
        }

        .production-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-size: 15px;
        }

        .production-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--rainbow-3);
            font-weight: bold;
        }

        .brand-pool {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .brand-badge {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            padding: 5px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
        }

        /* 流程步骤 */
        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px 20px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 18px;
            margin: 0 auto 20px;
        }

        .step-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background-color: var(--bg-card);
            border-radius: 20px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
        }

        .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: 14px;
        }

        .comparison-table th {
            background-color: #f8fafc;
            font-weight: 700;
        }

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

        .score-highlight {
            background: linear-gradient(90deg, rgba(255,107,107,0.05), rgba(108,92,231,0.05));
        }

        .text-prime {
            color: var(--rainbow-5);
            font-weight: bold;
        }

        .rating-star {
            color: #ff9f43;
            font-size: 16px;
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .token-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            position: relative;
        }

        .token-card.best-value {
            border: 2px solid var(--rainbow-5);
        }

        .token-card.best-value::after {
            content: "全网最省";
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--primary-gradient);
            color: #ffffff;
            font-size: 10px;
            font-weight: bold;
            padding: 3px 10px;
            border-radius: 10px;
        }

        .token-model {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .token-price {
            margin-bottom: 20px;
        }

        .token-price .amount {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-main);
        }

        .token-price .unit {
            font-size: 14px;
            color: var(--text-muted);
        }

        .token-features {
            list-style: none;
            margin-bottom: 25px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        .token-features li {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            font-size: 11px;
            background-color: rgba(108, 92, 231, 0.1);
            color: var(--rainbow-5);
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
            font-weight: bold;
        }

        .case-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        .review-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 25px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.01);
        }

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

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .user-avatar-placeholder {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .user-name {
            font-size: 14px;
            font-weight: 700;
        }

        .user-role {
            font-size: 11px;
            color: var(--text-muted);
        }

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

        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 15px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background-color: #ffffff;
            transition: background-color 0.3s;
        }

        .faq-question:hover {
            background-color: #fafbfc;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            font-weight: normal;
            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;
            border-top: 0 solid var(--border-color);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            border-top-width: 1px;
        }

        .faq-answer-inner {
            padding: 20px;
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 表单板块 */
        .contact-section {
            background: linear-gradient(135deg, rgba(255, 107, 107, 0.02) 0%, rgba(108, 92, 231, 0.02) 100%);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: flex-start;
        }

        .contact-info h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .contact-info p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 30px;
        }

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

        .info-list li {
            margin-bottom: 15px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .info-list strong {
            color: var(--text-main);
        }

        .form-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: #ffffff;
            font-size: 14px;
            color: var(--text-main);
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--rainbow-5);
        }

        .btn-submit {
            width: 100%;
            background: var(--primary-gradient);
            background-size: 200% auto;
            color: #ffffff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.2);
            transition: 0.5s;
        }

        .btn-submit:hover {
            background-position: right center;
        }

        /* 微信客服浮窗 */
        .float-kefu {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            width: 150px;
            text-align: center;
            transition: transform 0.3s;
        }

        .float-kefu:hover {
            transform: translateY(-5px);
        }

        .float-kefu img {
            width: 100px;
            height: 100px;
            margin-bottom: 8px;
            border-radius: 6px;
        }

        .float-kefu span {
            font-size: 12px;
            font-weight: bold;
            color: var(--text-main);
            display: block;
        }

        /* 文章列表 */
        .article-list {
            margin-top: 40px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .article-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s;
            text-decoration: none;
            color: var(--text-main);
        }

        .article-item:hover {
            border-color: var(--rainbow-5);
            transform: translateX(5px);
        }

        .article-item span {
            font-size: 14px;
        }

        .article-item .date {
            color: var(--text-muted);
            font-size: 12px;
        }

        /* 常见问题自助排查 & AI术语百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 40px;
        }

        .help-panel {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
        }

        .help-panel h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 10px;
        }

        .help-tree {
            list-style: none;
        }

        .help-tree li {
            margin-bottom: 12px;
            font-size: 14px;
        }

        .help-tree strong {
            color: var(--rainbow-5);
        }

        /* 页脚 */
        footer {
            background-color: #1e293b;
            color: #94a3b8;
            padding: 80px 0 40px;
            border-top: 1px solid #334155;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.8;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-qrcode {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .qr-item {
            text-align: center;
            font-size: 11px;
        }

        .qr-item img {
            width: 80px;
            height: 80px;
            border-radius: 6px;
            margin-bottom: 5px;
        }

        .friend-links {
            border-top: 1px solid #334155;
            padding-top: 30px;
            margin-bottom: 30px;
        }

        .friend-links-title {
            font-size: 14px;
            color: #ffffff;
            margin-bottom: 10px;
            font-weight: 700;
        }

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

        .friend-links-list a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.3s;
        }

        .friend-links-list a:hover {
            color: #ffffff;
        }

        .copyright-area {
            border-top: 1px solid #334155;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .services-grid, .token-grid, .case-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid, .workflow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 32px;
            }
            .production-grid, .contact-grid, .help-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .token-grid, .case-grid, .reviews-grid, .stats-grid, .workflow-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .float-kefu {
                display: none; /* 移动端隐藏浮窗防阻碍操作 */
            }
        }