/* 基础重置 & CSS 变量 */
        :root {
            --primary-color: #e60012; /* 艳红主色 */
            --primary-hover: #b8000e;
            --secondary-color: #ff4d4f; /* 明红辅助 */
            --dark-color: #111111;
            --body-text: #2c2c2c;
            --light-bg: #f9f9f9;
            --white: #ffffff;
            --gray-border: #e8e8e8;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(230,0,18,0.1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--light-bg);
            color: var(--body-text);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        ul, ol {
            list-style: none;
        }

        /* 常用组件样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: var(--white);
            box-shadow: 0 4px 14px rgba(230, 0, 18, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--white);
            border: 2px solid var(--white);
        }

        .btn-secondary:hover {
            background-color: var(--white);
            color: var(--primary-color);
            transform: translateY(-2px);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

        .btn-outline:hover {
            background-color: var(--primary-color);
            color: var(--white);
            transform: translateY(-2px);
        }

        /* Section 通用标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 32px;
            color: var(--dark-color);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
            margin-bottom: 15px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }

        .section-header p {
            font-size: 16px;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

        section {
            padding: 80px 0;
        }

        /* 顶部导航 */
        .site-header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--gray-border);
            box-shadow: var(--shadow-sm);
        }

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

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

        .ai-page-logo {
            height: 45px;
            width: auto;
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark-color);
            letter-spacing: 0.5px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: #444;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            justify-content: space-between;
            width: 24px;
            height: 18px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1001;
        }

        .mobile-menu-btn span {
            width: 100%;
            height: 2px;
            background-color: var(--dark-color);
            transition: var(--transition);
        }

        /* Hero首屏 - 艳红热烈科技感 (无图片) */
        .hero-section {
            background: linear-gradient(135deg, #7c0008 0%, #d3111b 50%, #e60012 100%);
            color: var(--white);
            padding: 120px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 0);
            background-size: 24px 24px;
            opacity: 0.6;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.4);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 25px;
            letter-spacing: 1px;
            animation: pulse 2s infinite;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: 1px;
            text-shadow: 0 4px 10px rgba(0,0,0,0.25);
        }

        .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 40px;
            line-height: 1.6;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        /* 核心卖点快速概览 */
        .hero-features {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 50px;
            border-top: 1px solid rgba(255,255,255,0.2);
            padding-top: 40px;
            flex-wrap: wrap;
        }

        .hero-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hero-feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            background-color: rgba(255,255,255,0.2);
            border-radius: 50%;
            font-size: 12px;
        }

        .hero-feature-text {
            font-size: 15px;
            font-weight: 500;
        }

        /* 数据指标卡片 */
        .stats-section {
            padding: 40px 0;
            background-color: var(--white);
            margin-top: -50px;
            position: relative;
            z-index: 10;
            border-radius: 8px;
            box-shadow: var(--shadow-md);
            max-width: 1160px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .stat-card {
            border-right: 1px solid var(--gray-border);
        }

        .stat-card:last-child {
            border-right: none;
        }

        .stat-value {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: #666;
            font-weight: 500;
        }

        /* 关于我们与平台介绍 */
        .about-section {
            background-color: var(--white);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 26px;
            color: var(--dark-color);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-p {
            font-size: 16px;
            color: #555;
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .about-capabilities {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .cap-item {
            background-color: var(--light-bg);
            padding: 20px;
            border-radius: 6px;
            border-left: 4px solid var(--primary-color);
        }

        .cap-item h4 {
            font-size: 16px;
            color: var(--dark-color);
            margin-bottom: 8px;
        }

        .cap-item p {
            font-size: 13px;
            color: #666;
        }

        .about-media-box {
            position: relative;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .about-media-box img {
            width: 100%;
            display: block;
            object-fit: cover;
        }

        /* 全平台AIGC服务 & 场景 */
        .services-section {
            background-color: var(--light-bg);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            padding: 35px 30px;
            border-radius: 8px;
            transition: var(--transition);
            border: 1px solid var(--gray-border);
            position: relative;
            overflow: hidden;
        }

        .service-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: var(--primary-color);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }

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

        .service-card:hover::after {
            transform: scaleX(1);
        }

        .service-icon-wrapper {
            width: 55px;
            height: 55px;
            background-color: rgba(230,0,18,0.06);
            border-radius: 5px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-color);
            font-size: 24px;
            font-weight: bold;
        }

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

        .service-card p {
            font-size: 14px;
            color: #666;
            margin-bottom: 15px;
        }

        /* 支持的AI大模型标签云 */
        .models-box {
            margin-top: 40px;
            background-color: var(--white);
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
        }

        .models-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
            color: var(--dark-color);
        }

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

        .tag-cloud span {
            background-color: var(--light-bg);
            color: #555;
            padding: 6px 15px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid #eee;
            transition: var(--transition);
        }

        .tag-cloud span:hover {
            background-color: var(--primary-color);
            color: var(--white);
            border-color: var(--primary-color);
        }

        /* 一站式AIGC制作与全行业解决方案 */
        .solutions-section {
            background-color: var(--white);
        }

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

        .solution-card {
            background-color: var(--light-bg);
            border-radius: 8px;
            padding: 25px;
            text-align: center;
            border: 1px solid #f0f0f0;
            transition: var(--transition);
        }

        .solution-card:hover {
            background-color: var(--white);
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-color);
        }

        .solution-card h4 {
            font-size: 18px;
            color: var(--dark-color);
            margin-bottom: 10px;
            font-weight: 700;
        }

        .solution-card p {
            font-size: 13px;
            color: #666;
        }

        /* 全国服务网络 */
        .network-section {
            background: linear-gradient(rgba(249, 249, 249, 0.95), rgba(249, 249, 249, 0.95));
            border-top: 1px solid var(--gray-border);
            border-bottom: 1px solid var(--gray-border);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-text h3 {
            font-size: 26px;
            color: var(--dark-color);
            margin-bottom: 15px;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 25px;
        }

        .network-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #555;
        }

        .network-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary-color);
            border-radius: 50%;
        }

        /* SVG网络连接图 */
        .network-visual {
            background-color: var(--white);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-border);
        }

        /* 标准化AIGC流程 & 技术标准 */
        .process-section {
            background-color: var(--white);
        }

        .process-timeline {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            margin: 0 auto 20px;
            box-shadow: 0 4px 10px rgba(230,0,18,0.2);
            position: relative;
            z-index: 2;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 25px;
            left: 50%;
            width: 100%;
            height: 2px;
            background-color: var(--gray-border);
            z-index: 1;
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step h4 {
            font-size: 16px;
            color: var(--dark-color);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .process-step p {
            font-size: 13px;
            color: #666;
            padding: 0 10px;
        }

        /* 技术标准表格区 */
        .tech-specs {
            margin-top: 50px;
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: var(--white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-border);
        }

        .tech-specs th, .tech-specs td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--gray-border);
        }

        .tech-specs th {
            background-color: var(--dark-color);
            color: var(--white);
            font-weight: 600;
        }

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

        .tech-specs tr:nth-child(even) {
            background-color: #fafafa;
        }

        /* 客户案例中心 */
        .cases-section {
            background-color: var(--light-bg);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--gray-border);
            transition: var(--transition);
        }

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

        .case-img-wrapper {
            position: relative;
            aspect-ratio: 16 / 9;
            background-color: #eee;
            overflow: hidden;
        }

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

        .case-content {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: rgba(230,0,18,0.06);
            color: var(--primary-color);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }

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

        .case-content p {
            font-size: 14px;
            color: #666;
        }

        /* 对比评测 - 突出 9.9 评分与五星推荐 */
        .comparison-section {
            background-color: var(--white);
        }

        .rating-hero {
            background: linear-gradient(135deg, #111111 0%, #222222 100%);
            color: var(--white);
            border-radius: 8px;
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 30px;
        }

        .rating-title h3 {
            font-size: 24px;
            margin-bottom: 8px;
        }

        .rating-title p {
            color: #aaa;
            font-size: 14px;
        }

        .rating-box {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .rating-score {
            font-size: 64px;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }

        .rating-stars {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .stars-row {
            color: #fadb14;
            font-size: 24px;
        }

        .stars-label {
            font-size: 14px;
            color: #fff;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: center;
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            overflow: hidden;
        }

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

        .comparison-table th {
            background-color: #fafafa;
            color: var(--dark-color);
            font-weight: 700;
        }

        .comparison-table td:first-child {
            text-align: left;
            font-weight: 600;
            background-color: #fafafa;
        }

        .comparison-table .highlight {
            background-color: rgba(230,0,18,0.02);
            color: var(--primary-color);
            font-weight: 700;
        }

        /* Token比价参考 */
        .token-section {
            background-color: var(--light-bg);
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-section {
            background-color: var(--white);
        }

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

        .training-card {
            background-color: var(--light-bg);
            border-radius: 6px;
            padding: 24px 20px;
            text-align: center;
            border-top: 4px solid var(--primary-color);
            box-shadow: var(--shadow-sm);
        }

        .training-card h4 {
            font-size: 16px;
            color: var(--dark-color);
            margin-bottom: 12px;
            font-weight: 700;
        }

        .training-card p {
            font-size: 13px;
            color: #666;
            line-height: 1.5;
        }

        /* 客户评论卡片 */
        .reviews-section {
            background-color: var(--light-bg);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
            position: relative;
        }

        .review-text {
            font-size: 14px;
            color: #555;
            line-height: 1.6;
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            background-color: var(--primary-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 16px;
        }

        .author-info h4 {
            font-size: 14px;
            color: var(--dark-color);
            font-weight: 700;
        }

        .author-info p {
            font-size: 12px;
            color: #888;
        }

        /* 帮助中心 & FAQ & 自助排查 */
        .faq-section {
            background-color: var(--white);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
        }

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

        .faq-item {
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            overflow: hidden;
            background-color: var(--white);
        }

        .faq-header {
            padding: 16px 20px;
            background-color: var(--white);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            color: var(--dark-color);
            transition: var(--transition);
        }

        .faq-header:hover {
            background-color: #fafafa;
        }

        .faq-icon {
            font-size: 18px;
            font-weight: normal;
            transition: var(--transition);
        }

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: #666;
            font-size: 14px;
            background-color: #fafafa;
        }

        .faq-item.active .faq-content {
            padding: 16px 20px;
            max-height: 200px;
            border-top: 1px solid var(--gray-border);
        }

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

        /* 自助排查与AI百科 */
        .troubleshooting-box {
            background-color: var(--light-bg);
            border-radius: 8px;
            padding: 30px;
            border: 1px solid var(--gray-border);
        }

        .troubleshooting-box h3 {
            font-size: 20px;
            color: var(--dark-color);
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 10px;
        }

        .trouble-steps {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .trouble-step {
            display: flex;
            gap: 15px;
        }

        .trouble-num {
            width: 24px;
            height: 24px;
            background-color: var(--dark-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
        }

        .trouble-info h4 {
            font-size: 14px;
            color: var(--dark-color);
            margin-bottom: 4px;
        }

        .trouble-info p {
            font-size: 13px;
            color: #666;
        }

        .dictionary-box {
            margin-top: 30px;
            background-color: var(--white);
            border-radius: 8px;
            padding: 25px;
            border: 1px solid var(--gray-border);
        }

        .dictionary-box h3 {
            font-size: 18px;
            color: var(--dark-color);
            margin-bottom: 15px;
        }

        .dictionary-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .dict-item {
            font-size: 13px;
        }

        .dict-term {
            font-weight: 700;
            color: var(--primary-color);
        }

        /* 行业资讯 / 知识库 */
        .news-section {
            background-color: var(--light-bg);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: var(--white);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--gray-border);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .news-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .news-date {
            font-size: 12px;
            color: #999;
            margin-bottom: 10px;
        }

        .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-link {
            margin-top: auto;
            color: var(--primary-color);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* 联系我们 & 加盟代理 & 需求提交表单 */
        .contact-section {
            background-color: var(--white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
        }

        .form-box {
            background-color: var(--light-bg);
            padding: 40px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
            box-shadow: var(--shadow-sm);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--gray-border);
            background-color: var(--white);
            border-radius: 6px;
            font-size: 14px;
            color: var(--body-text);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(230,0,18,0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

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

        .contact-card-info {
            background-color: #fafafa;
            border-left: 4px solid var(--dark-color);
            padding: 20px;
            border-radius: 0 8px 8px 0;
        }

        .contact-card-info h4 {
            font-size: 16px;
            color: var(--dark-color);
            margin-bottom: 10px;
        }

        .contact-card-info p {
            font-size: 14px;
            color: #666;
            margin-bottom: 5px;
        }

        /* 社交矩阵与二维码 */
        .social-matrix {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 20px;
            background-color: var(--light-bg);
            border: 1px solid var(--gray-border);
            padding: 20px;
            border-radius: 8px;
            align-items: center;
        }

        .qr-code-wrapper {
            text-align: center;
        }

        .qr-code-wrapper img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--gray-border);
            padding: 5px;
            background-color: var(--white);
            border-radius: 4px;
        }

        .qr-label {
            font-size: 12px;
            color: #666;
            margin-top: 8px;
        }

        .social-links-list {
            font-size: 14px;
            color: #555;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--dark-color);
            color: #999;
            padding: 60px 0 30px;
            font-size: 14px;
            border-top: 4px solid var(--primary-color);
        }

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

        .footer-logo h3 {
            color: var(--white);
            font-size: 20px;
            margin-bottom: 15px;
        }

        .footer-logo p {
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: var(--white);
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a:hover {
            color: var(--white);
            padding-left: 5px;
        }

        .friend-links-box {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links-box a {
            background-color: #222;
            color: #ccc;
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 12px;
            border: 1px solid #333;
        }

        .friend-links-box a:hover {
            background-color: var(--primary-color);
            color: var(--white);
            border-color: var(--primary-color);
        }

        .footer-bottom {
            border-top: 1px solid #222;
            padding-top: 30px;
            text-align: center;
            font-size: 12px;
        }

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

        .widget-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            transition: var(--transition);
            position: relative;
        }

        .widget-item:hover {
            transform: scale(1.05);
            background-color: var(--primary-hover);
        }

        .widget-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-md);
            display: none;
            text-align: center;
            width: 150px;
        }

        .widget-popover img {
            width: 120px;
            height: 120px;
        }

        .widget-popover p {
            font-size: 12px;
            color: #333;
            margin-top: 5px;
            font-weight: bold;
        }

        .widget-item:hover .widget-popover {
            display: block;
        }

        .back-to-top {
            background-color: var(--dark-color);
            display: none;
        }

        /* 关键帧动画 */
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); opacity: 0.9; }
            100% { transform: scale(1); }
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .stat-card {
                border-right: none;
            }
            .stat-card:nth-child(odd) {
                border-right: 1px solid var(--gray-border);
            }
            .services-grid, .cases-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--gray-border);
                box-shadow: var(--shadow-md);
                gap: 15px;
                display: none;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .about-grid, .network-grid, .faq-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .process-timeline {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .process-step::after {
                display: none;
            }
            .services-grid, .cases-grid, .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-card:nth-child(odd) {
                border-right: none;
            }
            .stat-card {
                border-bottom: 1px solid var(--gray-border);
                padding-bottom: 15px;
            }
            .stat-card:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rating-hero {
                justify-content: center;
                text-align: center;
            }
            .tech-specs, .comparison-table {
                display: block;
                overflow-x: auto;
                white-space: nowrap;
            }
        }

        @media (max-width: 480px) {
            .training-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }