:root {
            --primary: #0052ff;
            --primary-light: #e6eeff;
            --secondary: #00ffd0;
            --accent: #7c3aed;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --border: #e2e8f0;
            --success: #10b981;
            --warning: #f59e0b;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 极致鲜亮风格的渐变与装饰 */
        .gradient-text {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 50%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            text-decoration: none;
            cursor: pointer;
            border: none;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 82, 255, 0.4);
        }

        .btn-secondary {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        .btn-secondary:hover {
            background-color: #dbeafe;
            transform: translateY(-2px);
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

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

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

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

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

        /* 移动端菜单切换按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: 0.3s;
        }

        /* Hero首屏 - 极致鲜亮、无图科技感 */
        .hero {
            padding: 100px 0 80px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 255, 208, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 40%),
                        var(--light);
            text-align: center;
            border-bottom: 1px solid var(--border);
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--gray);
            max-width: 800px;
            margin: 0 auto 36px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

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

        .stat-card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

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

        .section-bg {
            background-color: #ffffff;
        }

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

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

        .section-header p {
            color: var(--gray);
            max-width: 600px;
            margin: 0 auto;
        }

        /* 平台介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .intro-content h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

        .intro-list {
            list-style: none;
            margin-top: 20px;
        }

        .intro-list li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .intro-list li::before {
            content: "✓";
            color: var(--success);
            font-weight: bold;
        }

        .intro-side {
            background: linear-gradient(135deg, var(--primary-light) 0%, rgba(124, 58, 237, 0.1) 100%);
            padding: 30px;
            border-radius: 20px;
            border: 1px dashed var(--primary);
        }

        /* 服务能力卡片 */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .card {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0, 82, 255, 0.1);
            border-color: var(--primary);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .card p {
            color: var(--gray);
            font-size: 0.95rem;
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .tag-item {
            background: #ffffff;
            border: 1px solid var(--border);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s;
            cursor: default;
        }

        .tag-item:hover {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 流程步骤 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: var(--border);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            width: 50%;
            padding: 0 30px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            position: absolute;
            top: 0;
            left: 100%;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            transform: translate(-50%, 0);
            z-index: 1;
            box-shadow: 0 0 0 4px var(--primary-light);
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: 0;
        }

        .timeline-content {
            background: #ffffff;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.01);
        }

        /* 评测与对比表格 */
        .table-responsive {
            overflow-x: auto;
            margin-top: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: #ffffff;
            min-width: 700px;
        }

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

        th {
            background-color: var(--primary-light);
            color: var(--dark);
            font-weight: 700;
        }

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

        .highlight-cell {
            background-color: rgba(0, 82, 255, 0.03);
            font-weight: 600;
        }

        /* 评测分展示 */
        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            background: linear-gradient(135deg, #eff6ff 0%, #fae8ff 100%);
            padding: 30px;
            border-radius: 20px;
            margin-bottom: 40px;
            border: 1px solid rgba(0, 82, 255, 0.1);
        }

        .rating-score {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary);
        }

        /* 案例展示区 */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .gallery-item {
            background: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .gallery-item:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .gallery-img-container {
            position: relative;
            padding-bottom: 60%;
            background-color: #f1f5f9;
            overflow: hidden;
        }

        .gallery-img-container img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .gallery-info {
            padding: 20px;
        }

        /* 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);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
        }

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

        .review-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary);
        }

        .review-meta h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }

        .review-meta span {
            font-size: 0.8rem;
            color: var(--gray);
        }

        /* 需求匹配表单 */
        .form-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.02) 0%, rgba(124, 58, 237, 0.02) 100%);
        }

        .form-container {
            max-width: 650px;
            margin: 0 auto;
            background: #ffffff;
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--border);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            outline: none;
            transition: all 0.3s;
            font-family: inherit;
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }

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

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--dark);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            color: var(--gray);
            font-size: 0.95rem;
            padding-top: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 1000px;
            padding-top: 12px;
            transition: max-height 0.5s ease-in-out;
        }

        .faq-icon::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 300;
        }

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

        /* 资讯与友情链接 */
        .articles-list {
            list-style: none;
            margin-bottom: 30px;
        }

        .articles-list li {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .articles-list a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }

        .friend-links a {
            color: var(--gray);
            text-decoration: none;
            font-size: 0.9rem;
        }

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

        /* 页脚与联系方式 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            max-height: 35px;
            margin-bottom: 15px;
        }

        .footer-contact h4, .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .footer-contact p {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-qrcode {
            display: flex;
            gap: 20px;
            margin-top: 15px;
        }

        .qrcode-item {
            text-align: center;
        }

        .qrcode-item img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            background-color: white;
            padding: 5px;
            margin-bottom: 5px;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 悬浮组件 */
        .float-widget {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #ffffff;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: var(--primary);
            font-size: 1.3rem;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: #ffffff;
            transform: scale(1.1);
        }

        .float-kefu-pop {
            display: none;
            position: absolute;
            right: 60px;
            bottom: 0;
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 15px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            text-align: center;
            width: 150px;
        }

        .float-kefu-pop img {
            width: 120px;
            height: 120px;
        }

        .float-btn:hover .float-kefu-pop {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
            }

            .timeline-item:nth-child(odd), .timeline-item:nth-child(even) {
                left: 0;
                text-align: left;
            }

            .timeline-badge {
                left: 20px !important;
            }
        }