:root {
            --primary: #7f00ff;
            --primary-light: #e8d5ff;
            --secondary: #00f0ff;
            --accent: #ff007f;
            --dark: #0f0f1a;
            --light: #f8f9fd;
            --gray: #686b7c;
            --border-color: #e2e8f0;
            --card-shadow: 0 10px 30px rgba(127, 0, 255, 0.08);
            --neon-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
            --gradient-rainbow: linear-gradient(135deg, #ff007f 0%, #7f00ff 50%, #00f0ff 100%);
        }

        * {
            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: #1e1e2d;
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

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

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

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

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--gradient-rainbow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            color: #2d3748;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s;
        }

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

        .nav-btn {
            background: var(--gradient-rainbow);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 600 !important;
            box-shadow: 0 4px 15px rgba(255, 0, 127, 0.3);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 0, 127, 0.4);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* 统一大标题样式 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

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

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--gradient-rainbow);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--gray);
            font-size: 1.1rem;
        }

        /* 首屏 Hero (无图片) */
        .hero-section {
            background: radial-gradient(circle at 80% 20%, rgba(0, 240, 255, 0.15) 0%, rgba(255, 0, 127, 0.1) 40%, rgba(248, 249, 253, 1) 100%);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(127, 0, 255, 0.08);
            border: 1px solid rgba(127, 0, 255, 0.2);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            max-width: 900px;
            margin: 0 auto 20px;
        }

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

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto 40px;
        }

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

        .btn-primary {
            background: var(--gradient-rainbow);
            color: #fff;
            padding: 15px 35px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 10px 25px rgba(255, 0, 127, 0.35);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(255, 0, 127, 0.45);
        }

        .btn-secondary {
            background: #fff;
            color: var(--dark);
            padding: 15px 35px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            transition: background 0.3s, transform 0.3s;
        }

        .btn-secondary:hover {
            background: #f1f3f9;
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .metric-card {
            background: #fff;
            padding: 25px 15px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(127, 0, 255, 0.05);
            transition: transform 0.3s;
        }

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

        .metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #7f00ff, #00f0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 500;
        }

        /* 板块通用容器 */
        section {
            padding: 80px 0;
            position: relative;
        }

        .bg-white {
            background-color: #fff;
        }

        /* 关于我们与软件介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

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

        .feature-bullets {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 30px;
        }

        .bullet-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
        }

        .bullet-icon {
            color: var(--accent);
            font-size: 1.2rem;
        }

        /* 服务体系 & 标签云 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-rainbow);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(127, 0, 255, 0.15);
        }

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

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

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

        .tag-cloud {
            margin-top: 50px;
            text-align: center;
            background: rgba(127, 0, 255, 0.03);
            padding: 30px;
            border-radius: 20px;
            border: 1px dashed var(--primary-light);
        }

        .tag-cloud h4 {
            margin-bottom: 20px;
            color: var(--dark);
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag-item {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--dark);
            font-weight: 500;
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
            transition: all 0.2s;
        }

        .tag-item:hover {
            background: var(--gradient-rainbow);
            color: #fff;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 制作流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary-light);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 50px;
            position: relative;
            width: 100%;
        }

        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .timeline-dot {
            position: absolute;
            left: 50%;
            top: 50%;
            width: 20px;
            height: 20px;
            background: var(--gradient-rainbow);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            box-shadow: 0 0 10px var(--accent);
            z-index: 2;
        }

        .timeline-content {
            width: 45%;
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .timeline-step {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

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

        /* 解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 16px;
            text-align: center;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .solution-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
            box-shadow: var(--neon-shadow);
        }

        .solution-card h3 {
            font-size: 1.2rem;
            margin: 15px 0 10px;
        }

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

        /* 服务网络 & 技术标准 */
        .split-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .network-box, .tech-box {
            background: #fff;
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .network-box h3, .tech-box h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--dark);
            border-left: 5px solid var(--primary);
            padding-left: 15px;
        }

        .network-list, .tech-list {
            list-style: none;
        }

        .network-list li, .tech-list li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #f1f3f9;
            display: flex;
            justify-content: space-between;
        }

        .network-list li:last-child, .tech-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

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

        .case-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .case-img-container {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #f1f3f9;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.08);
        }

        .case-info {
            padding: 25px;
        }

        .case-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

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

        /* 对比评测 */
        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            background: linear-gradient(135deg, rgba(127, 0, 255, 0.05) 0%, rgba(0, 240, 255, 0.05) 100%);
            padding: 30px;
            border-radius: 20px;
            margin-bottom: 40px;
            border: 1px solid rgba(127, 0, 255, 0.1);
        }

        .rating-stars {
            font-size: 2rem;
            color: #ffb703;
        }

        .rating-score {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
        }

        .rating-score span {
            font-size: 1.2rem;
            color: var(--gray);
            font-weight: 500;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: #f8fafc;
            color: var(--dark);
            font-weight: 700;
        }

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

        .highlight-col {
            background-color: rgba(127, 0, 255, 0.02);
            font-weight: 600;
            color: var(--primary);
        }

        /* 需求匹配与表单 */
        .form-section-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .form-info h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .form-info p {
            color: var(--gray);
            margin-bottom: 30px;
        }

        .form-card {
            background: #fff;
            padding: 40px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: #f8fafc;
            outline: none;
            font-family: inherit;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
            background: #fff;
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* 价格与Token比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .price-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
        }

        .price-card.popular {
            border: 2px solid var(--primary);
            transform: scale(1.05);
        }

        .price-badge {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gradient-rainbow);
            color: #fff;
            padding: 4px 15px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .price-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .price-amount {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 25px;
        }

        .price-amount span {
            font-size: 1rem;
            color: var(--gray);
            font-weight: 400;
        }

        .price-features {
            list-style: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .price-features li {
            padding: 10px 0;
            border-bottom: 1px solid #f1f3f9;
            color: var(--gray);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* 培训板块 */
        .training-container {
            background: radial-gradient(circle at 10% 90%, rgba(0, 240, 255, 0.08) 0%, rgba(127, 0, 255, 0.05) 50%, rgba(255, 255, 255, 0) 100%);
            border-radius: 30px;
            padding: 50px;
            border: 1px solid var(--border-color);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .training-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 16px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent);
            box-shadow: 0 10px 25px rgba(255, 0, 127, 0.1);
        }

        .training-icon {
            font-size: 2.2rem;
            margin-bottom: 15px;
            display: inline-block;
        }

        .training-card h4 {
            font-size: 1.05rem;
            color: var(--dark);
            font-weight: 700;
        }

        /* 帮助中心 & FAQ */
        .help-grid {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 50px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.3s;
        }

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

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

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

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

        .faq-item.active {
            border-color: var(--primary);
        }

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

        .faq-item.active .faq-body {
            max-height: 300px;
        }

        /* 自助排查 & 术语百科 */
        .diagnose-box {
            background: #fff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            margin-bottom: 30px;
        }

        .diagnose-box h3 {
            margin-bottom: 15px;
            font-size: 1.3rem;
            color: var(--dark);
        }

        .diagnose-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .diagnose-step {
            background: #f8fafc;
            padding: 15px;
            border-radius: 8px;
            font-size: 0.9rem;
        }

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

        .glossary-item {
            background: #fff;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .glossary-item h4 {
            color: var(--primary);
            margin-bottom: 8px;
            font-size: 1.1rem;
        }

        .glossary-item p {
            color: var(--gray);
            font-size: 0.85rem;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--gradient-rainbow);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
        }

        .user-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
        }

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

        /* 行业资讯 / 知识库 */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-card {
            background: #fff;
            padding: 25px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: border-color 0.3s;
        }

        .article-card:hover {
            border-color: var(--primary);
        }

        .article-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .article-card p {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        .article-card a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 联系我们与底部 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

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

        .contact-info-list li {
            margin-bottom: 15px;
            font-size: 1rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .social-channels {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            background: #fff;
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

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

        .channel-item img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 10px;
            border: 1px solid var(--border-color);
        }

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

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #a0aec0;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 50px;
            margin-bottom: 40px;
            border-bottom: 1px solid #2d3748;
            padding-bottom: 40px;
        }

        .footer-logo-desc h3 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 1.4rem;
        }

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

        .footer-links ul {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .footer-links a {
            color: #a0aec0;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .footer-friend-links {
            margin-top: 20px;
        }

        .footer-friend-links h4 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .friend-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links-container a {
            color: #a0aec0;
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.3s;
        }

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

        .copyright-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .copyright-bar a {
            color: var(--secondary);
            text-decoration: none;
        }

        /* 浮动客服 */
        .floating-contact {
            position: fixed;
            right: 20px;
            bottom: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: var(--gradient-rainbow);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            box-shadow: 0 4px 15px rgba(255, 0, 127, 0.4);
            cursor: pointer;
            font-size: 1.3rem;
            transition: transform 0.3s;
            position: relative;
        }

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

        .float-qr-box {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
        }

        .float-qr-box img {
            width: 120px;
            height: 120px;
            object-fit: cover;
        }

        .float-qr-box p {
            font-size: 0.8rem;
            color: var(--dark);
            margin-top: 5px;
            white-space: nowrap;
        }

        .float-btn:hover .float-qr-box {
            display: block;
        }

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

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #fff;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-top: 1px solid var(--border-color);
            }
            .nav-links.active {
                display: flex;
            }
            .hero-title {
                font-size: 2rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .split-section, .form-section-inner, .help-grid, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                flex-direction: row !important;
                padding-left: 45px;
                box-sizing: border-box;
            }
            .timeline-dot {
                left: 20px;
            }
            .timeline-content {
                width: 100%;
            }
            .service-grid, .case-gallery, .reviews-grid, .solution-grid, .training-grid, .price-grid, .articles-list, .glossary-grid {
                grid-template-columns: 1fr;
            }
            .training-container {
                padding: 20px;
            }
            .social-channels {
                grid-template-columns: 1fr 1fr;
            }
        }