:root {
            --primary-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
            --secondary-gradient: linear-gradient(135deg, #0575e6 0%, #00f2fe 100%);
            --dark-color: #0f172a;
            --text-color: #334155;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --accent-color: #0d9488;
            --border-color: #e2e8f0;
            --success-color: #10b981;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            gap: 20px;
        }

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

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

        .nav-btn {
            background: var(--primary-gradient);
            color: white;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark-color);
            margin: 4px 0;
            transition: 0.4s;
        }

        /* 首屏 Hero Section (无图片) */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at top right, rgba(0, 242, 254, 0.08), transparent 40%),
                        radial-gradient(circle at bottom left, rgba(79, 172, 254, 0.08), transparent 40%),
                        #ffffff;
            text-align: center;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background-color: rgba(13, 148, 136, 0.08);
            color: var(--accent-color);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--dark-color);
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 18px;
            max-width: 760px;
            margin: 0 auto 36px;
            color: #64748b;
        }

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

        .btn-primary {
            background: var(--primary-gradient);
            color: white;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
        }

        .btn-secondary {
            background-color: white;
            color: var(--dark-color);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: background 0.3s;
        }

        .btn-secondary:hover {
            background-color: #f1f5f9;
        }

        /* 核心特色数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 60px;
        }

        .stat-card {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
            transition: transform 0.3s;
        }

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

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            background: var(--secondary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: #64748b;
            font-weight: 500;
        }

        /* 公用Section样式 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

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

        .section-header p {
            font-size: 16px;
            color: #64748b;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .feature-card {
            background-color: var(--light-bg);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .feature-card:hover {
            background-color: #ffffff;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-color: #00f2fe;
            transform: translateY(-5px);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 20px;
            color: var(--dark-color);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.6;
        }

        /* 平台支撑与模型 */
        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 900px;
            margin: 0 auto;
        }

        .platform-tag {
            padding: 8px 18px;
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-color);
            transition: all 0.2s;
        }

        .platform-tag:hover {
            border-color: var(--accent-color);
            color: var(--accent-color);
            transform: scale(1.05);
        }

        /* 行业解决方案与全国网络 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-info h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--dark-color);
        }

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

        .network-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
        }

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

        /* 标准化流程/时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline-item {
            display: flex;
            margin-bottom: 40px;
            position: relative;
        }

        .timeline-badge {
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-right: 20px;
            flex-shrink: 0;
            z-index: 2;
        }

        .timeline-content {
            background-color: #ffffff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            width: 100%;
        }

        .timeline-content h4 {
            font-size: 18px;
            color: var(--dark-color);
            margin-bottom: 8px;
        }

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

        .case-card {
            background-color: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
            transition: transform 0.3s;
        }

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

        .case-image-wrapper {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: #f1f5f9;
        }

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

        .case-body {
            padding: 20px;
        }

        .case-body h3 {
            font-size: 18px;
            color: var(--dark-color);
            margin-bottom: 8px;
        }

        .case-body p {
            font-size: 14px;
            color: #64748b;
        }

        /* 职业技术培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background: linear-gradient(to right bottom, #ffffff, var(--light-bg));
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            display: flex;
            gap: 20px;
        }

        .training-icon {
            font-size: 40px;
            line-height: 1;
        }

        .training-details h3 {
            font-size: 18px;
            color: var(--dark-color);
            margin-bottom: 10px;
        }

        .training-details p {
            font-size: 14px;
            color: #64748b;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background-color: #ffffff;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .compare-table th {
            background-color: #f8fafc;
            color: var(--dark-color);
            font-weight: 600;
        }

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

        .rating-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 4px;
            font-weight: 700;
            background-color: rgba(16, 185, 129, 0.1);
            color: var(--success-color);
        }

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

        .review-card {
            background-color: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
        }

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

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

        .user-info h4 {
            font-size: 15px;
            color: var(--dark-color);
        }

        .user-info span {
            font-size: 12px;
            color: #64748b;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: #ffffff;
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark-color);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            color: #94a3b8;
            transition: transform 0.3s;
        }

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #f8fafc;
        }

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

        /* 需求匹配表单与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-card {
            background-color: #ffffff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            color: var(--text-color);
            background-color: #f8fafc;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
            background-color: #ffffff;
        }

        .btn-submit {
            width: 100%;
            background: var(--primary-gradient);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-card {
            background-color: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .info-card h4 {
            font-size: 16px;
            color: var(--dark-color);
            margin-bottom: 12px;
        }

        .qr-wrapper {
            max-width: 150px;
            border: 1px solid var(--border-color);
            padding: 8px;
            border-radius: 8px;
            background-color: white;
        }

        .qr-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 百科与资讯 */
        .articles-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .articles-list li {
            background-color: #ffffff;
            padding: 16px 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .articles-list a {
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
        }

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

        /* 友情链接与页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 14px;
        }

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

        .footer-logo-desc img {
            height: 36px;
            margin-bottom: 16px;
        }

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

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

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

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

        .footer-links a:hover {
            color: white;
        }

        .friendship-links {
            border-top: 1px solid #1e293b;
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friendship-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 13px;
        }

        .friendship-links a:hover {
            color: #94a3b8;
        }

        .copyright-area {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #64748b;
        }

        /* 浮动客服 */
        .floating-kf {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 99;
            background: var(--primary-gradient);
            color: white;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            cursor: pointer;
            font-size: 24px;
            transition: transform 0.3s;
        }

        .floating-kf:hover {
            transform: scale(1.1);
        }

        .kf-popover {
            display: none;
            position: absolute;
            bottom: 70px;
            right: 0;
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            width: 200px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            text-align: center;
            color: var(--dark-color);
        }

        .kf-popover img {
            width: 120px;
            height: 120px;
            margin: 8px auto 0;
        }

        .floating-kf:hover .kf-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .grid-3, .case-gallery, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper nav {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .grid-3, .case-gallery, .reviews-grid, .training-grid, .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 32px;
            }
            .network-grid {
                grid-template-columns: 1fr;
            }
            .mobile-menu {
                display: none;
                flex-direction: column;
                background-color: white;
                border-top: 1px solid var(--border-color);
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .mobile-menu a {
                padding: 10px 0;
                border-bottom: 1px solid #f1f5f9;
            }
        }