:root {
            --primary: #8b5cf6;
            --primary-hover: #7c3aed;
            --secondary: #ec4899;
            --accent: #a855f7;
            --dark: #2d2736;
            --light: #f8f6fc;
            --gray: #6b7280;
            --border: #e9e3f3;
            --bg-gradient: linear-gradient(135deg, #f9f8fc 0%, #f1ecf9 100%);
            --purple-glow: 0 8px 30px rgba(139, 92, 246, 0.08);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-gradient);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .section-title h2 {
            font-size: 2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .section-title p {
            color: var(--gray);
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* 顶部导航 */
        header {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
            border-bottom: 1px solid var(--border);
        }

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

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

        .logo-area img {
            height: 45px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 25px;
            align-items: center;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s;
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white !important;
            padding: 8px 18px;
            border-radius: 20px;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }

        .nav-toggle span {
            width: 25px;
            height: 3px;
            background: var(--dark);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* 首页 Hero 首屏 (无图设计，炫彩渐变背景与微动效) */
        #home {
            padding: 140px 0 90px;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
            text-align: center;
            border-bottom: 1px solid var(--border);
        }

        .hero-badge {
            display: inline-block;
            background: rgba(139, 92, 246, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(139, 92, 246, 0.2);
        }

        h1.hero-title {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 20px;
            font-weight: 800;
        }

        h1.hero-title span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--gray);
            max-width: 800px;
            margin: 0 auto 35px;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(139, 92, 246, 0.4);
        }

        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 10px 28px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all 0.2s;
        }

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: white;
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
            transition: transform 0.3s;
        }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--gray);
        }

        /* 关于我们与平台介绍 */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.6rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .about-text p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-features {
            list-style: none;
        }

        .about-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: bold;
            font-size: 1.1rem;
        }

        .about-visual {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
            padding: 40px;
            border-radius: 24px;
            border: 1px dashed var(--accent);
            text-align: center;
        }

        .about-visual h4 {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

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

        .service-card {
            background: white;
            padding: 35px 25px;
            border-radius: 16px;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(139, 92, 246, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

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

        /* 标签展示 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 40px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .tag-cloud span {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--dark);
            transition: all 0.2s;
        }

        .tag-cloud span:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-2px);
        }

        /* 流程步骤 & 解决方案 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background: white;
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            box-shadow: var(--purple-glow);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px;
        }

        .process-step h4 {
            margin-bottom: 10px;
            color: var(--dark);
        }

        .process-step p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 技术标准 & 服务网络 */
        .network-section {
            background: white;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border);
            margin-top: 30px;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            text-align: center;
        }

        .network-item {
            padding: 20px;
            background: var(--light);
            border-radius: 12px;
        }

        .network-item h5 {
            color: var(--primary);
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        /* 案例展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
            transition: transform 0.3s;
        }

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

        .case-img-holder {
            width: 100%;
            height: 240px;
            background: #eee;
            position: relative;
            overflow: hidden;
        }

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

        .case-info {
            padding: 25px;
        }

        .case-info h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

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

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: white;
            border-radius: 16px;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
            margin-top: 30px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

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

        th {
            background: rgba(139, 92, 246, 0.05);
            color: var(--dark);
            font-weight: 600;
        }

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

        .highlight-cell {
            background: rgba(139, 92, 246, 0.02);
            font-weight: 600;
            color: var(--primary);
        }

        .star-rating {
            color: #f59e0b;
            font-weight: 700;
        }

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

        .review-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
        }

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

        .review-author {
            display: flex;
            flex-direction: column;
        }

        .author-name {
            font-weight: 600;
            color: var(--primary);
        }

        .author-title {
            font-size: 0.85rem;
            color: var(--gray);
        }

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

        .training-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border-left: 5px solid var(--primary);
            box-shadow: var(--purple-glow);
        }

        .training-card.alt-border {
            border-left-color: var(--secondary);
        }

        .training-card h4 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .training-list {
            margin-top: 15px;
            list-style: none;
        }

        .training-list li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 20px;
            color: var(--gray);
        }

        .training-list li::before {
            content: "•";
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        /* FAQ 折叠面板 */
        .faq-wrapper {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background: white;
            border-radius: 12px;
            margin-bottom: 15px;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-header {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--dark);
            user-select: none;
        }

        .faq-header::after {
            content: "+";
            font-size: 1.5rem;
            color: var(--primary);
            transition: transform 0.3s;
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-content {
            padding: 0 20px 20px;
            color: var(--gray);
            font-size: 0.95rem;
            border-top: 1px solid #f9f9f9;
        }

        .faq-item.active .faq-body {
            max-height: 200px;
        }

        /* 自助排查 & 百科 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .troubleshoot-card, .encyclopedia-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--purple-glow);
        }

        .troubleshoot-card h4, .encyclopedia-card h4 {
            color: var(--primary);
            margin-bottom: 15px;
        }

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

        .form-container {
            background: white;
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--purple-glow);
            border: 1px solid var(--border);
        }

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

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

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

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

        .btn-submit {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 30px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .info-card {
            background: white;
            padding: 25px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--purple-glow);
        }

        .info-card h4 {
            margin-bottom: 10px;
            color: var(--primary);
        }

        .qr-code-box {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 15px;
        }

        .qr-code-box img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border);
            border-radius: 8px;
        }

        /* 知识库列表 */
        .articles-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .articles-list li {
            background: white;
            padding: 15px 20px;
            border-radius: 10px;
            border: 1px solid var(--border);
            transition: all 0.2s;
        }

        .articles-list li:hover {
            transform: translateX(5px);
            border-color: var(--primary);
        }

        .articles-list a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
            display: block;
        }

        /* 友情链接与底部 */
        footer {
            background: #18151e;
            color: #b9b5c1;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

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

        .footer-brand h3 {
            color: white;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: white;
            margin-bottom: 15px;
        }

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

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

        .footer-links a {
            color: #b9b5c1;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .friend-links {
            border-top: 1px solid #2e2a36;
            padding-top: 25px;
            margin-top: 25px;
        }

        .friend-links h5 {
            color: white;
            margin-bottom: 15px;
        }

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

        .friend-links-list a {
            color: #9d98a8;
            text-decoration: none;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid #2e2a36;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            width: 55px;
            height: 55px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            transition: transform 0.2s;
        }

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

        .kefu-popover {
            display: none;
            position: absolute;
            bottom: 65px;
            right: 0;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.15);
            border: 1px solid var(--border);
            width: 180px;
            text-align: center;
        }

        .kefu-popover img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin-top: 10px;
        }

        .kefu-popover p {
            font-size: 0.85rem;
            color: var(--dark);
            font-weight: 600;
        }

        .float-kefu:hover .kefu-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .reviews-grid, .network-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-flow {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            h1.hero-title {
                font-size: 2rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                border-top: 1px solid var(--border);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .about-content, .contact-layout, .training-grid, .cases-grid, .troubleshoot-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .reviews-grid, .network-grid, .process-flow {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }