/* 基础变量设置 - 亮紫绚烂风 Enterprise Purple Theme */
        :root {
            --primary-color: #6b21a8;
            --primary-light: #9333ea;
            --primary-dark: #4c1d95;
            --accent-color: #c084fc;
            --accent-bright: #e879f9;
            --bg-base: #fcfaff;
            --bg-card: #ffffff;
            --bg-alt: #f3e8ff;
            --text-main: #1e1b4b;
            --text-muted: #475569;
            --text-light: #64748b;
            --border-color: #e9d5ff;
            --shadow-sm: 0 2px 8px rgba(107, 33, 168, 0.06);
            --shadow-md: 0 10px 25px rgba(107, 33, 168, 0.1);
            --shadow-lg: 0 20px 40px rgba(107, 33, 168, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* 重置样式 */
        * {
            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;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 头部与导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

        .ai-page-logo {
            max-height: 44px;
            width: auto;
        }

        .brand-title {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-bright));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 注意：按要求强制设置 .nav-links 的 gap 为 0 */
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
        }

        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
            border-radius: var(--radius-sm);
        }

        .nav-links li a:hover {
            color: var(--primary-color);
            background: rgba(147, 51, 234, 0.08);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            color: #ffffff !important;
            box-shadow: 0 4px 14px rgba(107, 33, 168, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(107, 33, 168, 0.45);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--primary-color);
            border: 1.5px solid var(--border-color);
        }

        .btn-secondary:hover {
            background: var(--bg-alt);
            border-color: var(--primary-light);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-dark);
            cursor: pointer;
        }

        /* 统一 Section 排版 */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-bg-alt {
            background: linear-gradient(180deg, #fbf7ff 0%, #f3e8ff 100%);
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 50px auto;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(147, 51, 234, 0.1);
            color: var(--primary-color);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
        }

        /* 首屏 HERO 区域 - 严禁出现任何图片 */
        .hero-section {
            padding: 90px 0 80px 0;
            background: radial-gradient(circle at 50% 0%, #f3e8ff 0%, #fcfaff 70%);
            overflow: hidden;
            position: relative;
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 0.9rem;
            color: var(--primary-color);
            font-weight: 600;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
        }

        .hero-title-box h1 {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--text-main);
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            line-height: 1.7;
        }

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

        .hero-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            padding: 24px 16px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-color);
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 4px;
        }

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

        /* 核心卖点 & 大模型标签云 */
        .models-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 24px;
        }

        .model-chip {
            padding: 6px 14px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 0.88rem;
            color: var(--text-main);
            font-weight: 500;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .model-chip:hover {
            background: var(--primary-color);
            color: #ffffff;
            border-color: var(--primary-color);
        }

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

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

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent-color);
        }

        .card-icon-box {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--bg-alt), #e9d5ff);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: bold;
        }

        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .card-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 30大创作场景全家桶列表 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .scenario-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .scenario-item:hover {
            border-color: var(--primary-light);
            background: #fcf8ff;
        }

        .scenario-item h4 {
            font-size: 1.05rem;
            color: var(--primary-dark);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scenario-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* 标准流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 12px;
            margin-top: 30px;
        }

        .step-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 12px;
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 30px;
            height: 30px;
            background: var(--primary-color);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: bold;
            margin: 0 auto 12px auto;
        }

        .step-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .step-desc {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 对比评测样式 */
        .rating-badge-box {
            background: linear-gradient(135deg, #7e22ce, #a855f7);
            color: #ffffff;
            padding: 24px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            box-shadow: var(--shadow-md);
        }

        .stars {
            color: #facc15;
            font-size: 1.4rem;
            letter-spacing: 2px;
        }

        .rating-score {
            font-size: 2.2rem;
            font-weight: 900;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 650px;
        }

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

        .comparison-table th {
            background: var(--bg-alt);
            color: var(--primary-dark);
            font-size: 1rem;
            font-weight: 700;
        }

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

        .comparison-table td.highlight {
            background: rgba(192, 132, 252, 0.08);
            font-weight: 700;
            color: var(--primary-color);
        }

        /* 案例中心图文排版 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .case-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .case-img-box {
            width: 100%;
            max-height: 260px;
            overflow: hidden;
            background: var(--bg-alt);
        }

        .ai-page-image {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .ai-page-image {
            transform: scale(1.03);
        }

        .case-body {
            padding: 20px;
        }

        /* 需求匹配估算工具 */
        .interactive-tool {
            background: #ffffff;
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-md);
        }

        .tool-form {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 24px;
        }

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

        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            outline: none;
            background: #fff;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.15);
        }

        .tool-result {
            background: var(--bg-alt);
            padding: 20px;
            border-radius: var(--radius-sm);
            text-align: center;
        }

        .result-highlight {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-color);
        }

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

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .reviewer-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .avatar-placeholder {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-bright));
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .reviewer-details h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .reviewer-details p {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* FAQ 折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question:hover {
            color: var(--primary-color);
            background: rgba(243, 232, 255, 0.4);
        }

        .faq-toggle-icon {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
            color: var(--primary-color);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: #fff;
        }

        .faq-answer-content {
            padding: 0 24px 18px 24px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px dashed var(--border-color);
            padding-top: 14px;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

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

        /* 文章与动态 */
        .articles-list-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        .article-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 16px;
        }

        .article-link-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 16px;
            background: var(--bg-base);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .article-link-item:hover {
            background: var(--bg-alt);
            transform: translateX(4px);
        }

        /* 联系与加盟表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
        }

        .contact-info-card {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-list {
            list-style: none;
            margin: 24px 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-info-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1rem;
        }

        .qr-code-box {
            background: #ffffff;
            padding: 16px;
            border-radius: var(--radius-md);
            display: inline-block;
            text-align: center;
            color: var(--text-main);
            max-width: 180px;
        }

        .qr-code-box img {
            max-width: 100%;
            height: auto;
            border-radius: 6px;
        }

        .form-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-sm);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 16px;
        }

        .form-full {
            grid-column: span 2;
        }

        /* 友情链接与页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 30px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 1rem;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-bright);
        }

        .friendship-links-box {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 30px;
            font-size: 0.88rem;
        }

        .friendship-links-box h5 {
            color: #cbd5e1;
            margin-bottom: 10px;
        }

        .friendship-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .friendship-links-list a {
            color: #94a3b8;
            transition: var(--transition);
        }

        .friendship-links-list a:hover {
            color: var(--accent-bright);
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }

        /* 浮动客服入口 */
        .floating-widget {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.2rem;
            border: none;
        }

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

        /* 响应式适配 */
        @media (max-width: 992px) {
            .hero-title-box h1 { font-size: 2rem; }
            .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
            .grid-3, .scenarios-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(3, 1fr); gap: 16px; }
            .contact-layout { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .case-gallery { grid-template-columns: 1fr; }
            .tool-form { 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;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle { display: block; }
            .nav-cta-group { display: none; }
            .hero-stats-grid { grid-template-columns: 1fr; }
            .grid-3, .grid-4, .scenarios-grid, .reviews-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .form-grid { grid-template-columns: 1fr; }
            .form-full { grid-column: span 1; }
            .footer-grid { grid-template-columns: 1fr; }
        }