/* 基础样式复位 */
        :root {
            --primary: #FFD600; /* 鲜黄耀眼 */
            --primary-hover: #E5C000;
            --dark: #1A1A1A;
            --dark-light: #2A2A2A;
            --light: #F9F9FB;
            --white: #FFFFFF;
            --gray: #666666;
            --border-color: #EAEAEA;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light);
            color: var(--dark);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* 统一页面容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 600;
            border-radius: 30px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--dark);
            box-shadow: 0 4px 15px rgba(255, 214, 0, 0.4);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 214, 0, 0.5);
        }

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

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

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            z-index: 1000;
            transition: var(--transition);
        }

        .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 {
            height: 40px;
            width: auto;
        }

        .logo-text {
            font-size: 1.3rem;
            font-weight: 850;
            letter-spacing: -0.5px;
            color: var(--dark);
        }

        .logo-text span {
            background-color: var(--primary);
            padding: 2px 6px;
            border-radius: 4px;
            margin-left: 4px;
        }

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

        .nav-menu a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--dark);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .nav-menu a:hover {
            background-color: rgba(255, 214, 0, 0.15);
        }

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

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

        /* 首屏 Hero Section (无图片) */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #FFFDF0 0%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 5px solid var(--primary);
        }

        /* 装饰几何块 */
        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 40%;
            height: 60%;
            background: radial-gradient(circle, rgba(255,214,0,0.15) 0%, transparent 70%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -5%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: linear-gradient(45deg, rgba(255,214,0,0.08) 0%, transparent 100%);
            border-radius: 50%;
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--dark);
            color: var(--primary);
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 700;
            border-radius: 30px;
            margin-bottom: 25px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            font-weight: 850;
            color: var(--dark);
            margin-bottom: 25px;
            letter-spacing: -1px;
        }

        .hero h1 span {
            box-shadow: inset 0 -15px 0 var(--primary);
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--gray);
            margin-bottom: 40px;
            line-height: 1.7;
        }

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

        .hero-highlights {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
        }

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

        .highlight-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark);
            display: block;
        }

        .highlight-value span {
            color: var(--primary-hover);
        }

        .highlight-label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 5px;
        }

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

        .section-alt {
            background-color: var(--light);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-tag {
            color: var(--dark);
            font-weight: 700;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: inline-block;
            background-color: var(--primary);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 15px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray);
        }

        /* 关于我们 & 平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 15px;
        }

        .about-text {
            color: var(--gray);
            margin-bottom: 25px;
            font-size: 1rem;
            line-height: 1.8;
        }

        .about-features {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 25px;
        }

        .about-features li {
            position: relative;
            padding-left: 25px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .about-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--dark);
            background-color: var(--primary);
            width: 18px;
            height: 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 10px;
            font-weight: 900;
        }

        .about-image-wrapper {
            position: relative;
        }

        .about-image-wrapper img {
            border-radius: 12px;
            box-shadow: 15px 15px 0 var(--primary);
            border: 2px solid var(--dark);
        }

        /* 全平台AIGC服务 & 一站式AIGC制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 35px 25px;
            transition: var(--transition);
            position: relative;
            box-shadow: 4px 4px 0 var(--dark);
        }

        .service-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: 8px 8px 0 var(--primary);
        }

        .service-icon {
            font-size: 2.2rem;
            margin-bottom: 20px;
            display: inline-block;
            background-color: var(--primary);
            width: 60px;
            height: 60px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--dark);
        }

        .service-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--gray);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .service-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
        }

        .service-tag-item {
            background-color: var(--light);
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
            border: 1px solid var(--border-color);
        }

        /* 支持模型滚动跑马灯 */
        .marquee-container {
            background-color: var(--dark);
            padding: 30px 0;
            overflow: hidden;
            position: relative;
            border-top: 3px solid var(--primary);
            border-bottom: 3px solid var(--primary);
        }

        .marquee-title {
            text-align: center;
            color: var(--white);
            font-size: 0.9rem;
            letter-spacing: 2px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .marquee-title span {
            color: var(--primary);
        }

        .marquee-content {
            display: flex;
            width: max-content;
            animation: marquee 25s linear infinite;
            gap: 40px;
        }

        .marquee-item {
            color: var(--white);
            font-size: 1.1rem;
            font-weight: 700;
            background-color: var(--dark-light);
            padding: 6px 18px;
            border-radius: 30px;
            border: 1px solid rgba(255, 214, 0, 0.3);
            white-space: nowrap;
        }

        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* 全行业解决方案与标准流程 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

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

        .solution-body {
            padding: 25px;
        }

        .solution-badge {
            background-color: rgba(255, 214, 0, 0.2);
            color: var(--dark);
            padding: 3px 10px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 4px;
            margin-bottom: 15px;
            display: inline-block;
        }

        .solution-body h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            font-weight: 800;
        }

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

        /* 时间线 / 标准化流程 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 0;
        }

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

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

        .timeline-item:nth-child(even) {
            align-self: flex-end;
            margin-left: 50%;
            padding-right: 0;
            padding-left: 40px;
        }

        .timeline-badge {
            position: absolute;
            top: 0;
            right: -16px;
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            border: 4px solid var(--dark);
            border-radius: 50%;
            z-index: 10;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -20px;
        }

        .timeline-panel {
            background-color: var(--white);
            padding: 25px;
            border-radius: 8px;
            border: 2px solid var(--dark);
            box-shadow: 4px 4px 0 var(--dark);
            position: relative;
        }

        .timeline-panel h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            font-weight: 800;
        }

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

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

        .case-card {
            display: flex;
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            border: 2px solid var(--dark);
            box-shadow: 5px 5px 0 var(--dark);
        }

        .case-image {
            width: 45%;
            position: relative;
            background-color: #eee;
        }

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

        .case-info {
            width: 55%;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .case-client {
            font-size: 0.8rem;
            color: var(--gray);
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .case-info h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            font-weight: 850;
        }

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

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            border: 2px solid var(--dark);
            border-radius: 12px;
            box-shadow: var(--shadow);
            background-color: var(--white);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

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

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

        .comparison-table th.highlight, .comparison-table td.highlight {
            background-color: rgba(255, 214, 0, 0.1);
            font-weight: 600;
            border-left: 2px dashed rgba(255, 214, 0, 0.4);
            border-right: 2px dashed rgba(255, 214, 0, 0.4);
        }

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

        .badge-score {
            display: inline-flex;
            align-items: center;
            background-color: var(--primary);
            color: var(--dark);
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 800;
            font-size: 0.85rem;
        }

        .score-star {
            color: #FF8F00;
            font-size: 1.1rem;
            margin-right: 5px;
        }

        /* 价格与Token比价 */
        .price-section {
            background-color: var(--light);
        }

        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

        .price-card {
            background-color: var(--white);
            border-radius: 12px;
            border: 2px solid var(--dark);
            padding: 40px 30px;
            position: relative;
            box-shadow: 4px 4px 0 var(--dark);
            transition: var(--transition);
        }

        .price-card.popular {
            border-color: var(--primary-hover);
            box-shadow: 8px 8px 0 var(--primary);
            transform: translateY(-10px);
        }

        .price-card.popular::before {
            content: '推荐';
            position: absolute;
            top: 20px;
            right: 20px;
            background-color: var(--primary);
            color: var(--dark);
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 800;
            border-radius: 4px;
            border: 1px solid var(--dark);
        }

        .price-card h3 {
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .price-amount {
            font-size: 2.2rem;
            font-weight: 900;
            margin-bottom: 25px;
            color: var(--dark);
            display: flex;
            align-items: baseline;
        }

        .price-amount span {
            font-size: 0.9rem;
            color: var(--gray);
            margin-left: 5px;
            font-weight: 500;
        }

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

        .price-features li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
            color: var(--gray);
            display: flex;
            justify-content: space-between;
        }

        .price-features li span {
            color: var(--dark);
            font-weight: 600;
        }

        /* 职业与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-item {
            background-color: var(--white);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 30px;
            transition: var(--transition);
            display: flex;
            gap: 20px;
        }

        .training-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .training-icon {
            font-size: 2rem;
            background-color: rgba(255, 214, 0, 0.15);
            width: 50px;
            height: 50px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .training-body h3 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

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

        .training-badge {
            background-color: var(--dark);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 3px;
        }

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

        .faq-item {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            box-shadow: 3px 3px 0 var(--dark);
        }

        .faq-question {
            padding: 20px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--white);
            transition: var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background-color: rgba(255, 214, 0, 0.05);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 700;
            transition: var(--transition);
        }

        .faq-item.active .faq-question {
            background-color: var(--primary);
            border-bottom: 2px solid var(--dark);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--white);
        }

        .faq-answer-inner {
            padding: 20px;
            color: var(--gray);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
        }

        /* AI术语百科 & 自助排查 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

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

        .help-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 10px;
        }

        .help-list {
            list-style: none;
        }

        .help-list li {
            padding: 12px 0;
            border-bottom: 1px dotted var(--border-color);
        }

        .help-list li:last-child {
            border-bottom: none;
        }

        .help-list strong {
            color: var(--dark);
            display: block;
            margin-bottom: 4px;
        }

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

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

        .comment-card {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0 var(--dark);
            position: relative;
        }

        .comment-rating {
            color: #FF8F00;
            margin-bottom: 15px;
        }

        .comment-text {
            font-size: 0.95rem;
            color: var(--gray);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .comment-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            border: 2px solid var(--dark);
            font-size: 0.9rem;
        }

        .comment-meta h4 {
            font-size: 0.9rem;
            font-weight: 800;
        }

        .comment-meta span {
            font-size: 0.75rem;
            color: var(--gray);
        }

        /* 行业资讯 / 知识库 (带最新文章链接) */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

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

        .article-content {
            padding: 25px;
        }

        .article-date {
            font-size: 0.8rem;
            color: var(--gray);
            margin-bottom: 10px;
            display: block;
        }

        .article-content h3 {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 12px;
            line-height: 1.4;
        }

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

        .article-link {
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--dark);
            text-transform: uppercase;
            letter-spacing: 1px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 2px;
        }

        /* 需求表单 */
        .contact-section {
            background-color: var(--light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .contact-form-wrapper {
            background-color: var(--white);
            border: 3px solid var(--dark);
            border-radius: 12px;
            padding: 40px;
            box-shadow: 6px 6px 0 var(--dark);
        }

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

        .form-label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 0.95rem;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--dark);
            border-radius: 8px;
            font-size: 0.95rem;
            background-color: var(--white);
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 214, 0, 0.25);
        }

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

        .contact-info-wrapper {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-card {
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 20px;
            box-shadow: 3px 3px 0 var(--dark);
        }

        .info-card h4 {
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

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

        .kefu-qrcode {
            margin-top: 15px;
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
        }

        /* 标签云与友情链接 */
        .tags-section {
            background-color: var(--white);
            padding: 50px 0;
            text-align: center;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 900px;
            margin: 0 auto 30px;
        }

        .tag-cloud-item {
            background-color: var(--light);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            border-top: 1px solid var(--border-color);
            padding-top: 25px;
            font-size: 0.85rem;
            color: var(--gray);
        }

        .friend-links a {
            color: var(--gray);
            margin: 0 5px;
        }

        .friend-links a:hover {
            color: var(--dark);
            text-decoration: underline;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: var(--white);
            padding: 60px 0 30px;
            font-size: 0.9rem;
            border-top: 5px solid var(--primary);
        }

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

        .footer-logo-desc h3 {
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 850;
            margin-bottom: 15px;
        }

        .footer-logo-desc p {
            color: #CCCCCC;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .footer-links h4, .footer-contact h4 {
            color: var(--primary);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
        }

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

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

        .footer-links a {
            color: #CCCCCC;
        }

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

        .footer-contact p {
            margin-bottom: 10px;
            color: #CCCCCC;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            text-align: center;
            color: #888888;
            font-size: 0.8rem;
        }

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background-color: var(--primary);
            border: 2px solid var(--dark);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 4px 4px 0 var(--dark);
            cursor: pointer;
            transition: var(--transition);
        }

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

        .floating-kefu svg {
            width: 28px;
            height: 28px;
            fill: var(--dark);
        }

        .floating-kefu-panel {
            position: fixed;
            bottom: 100px;
            right: 30px;
            width: 250px;
            background-color: var(--white);
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 5px 5px 0 var(--dark);
            display: none;
            z-index: 999;
        }

        .floating-kefu-panel.active {
            display: block;
        }

        .floating-kefu-panel h4 {
            font-weight: 800;
            margin-bottom: 10px;
            font-size: 0.95rem;
            text-align: center;
        }

        .floating-kefu-panel img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .solutions-grid, .price-grid, .comments-grid, .articles-grid, .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 3px solid var(--primary);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }

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

            .nav-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-highlights {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
            }

            .timeline-item:nth-child(even) {
                margin-left: 0;
                padding-left: 45px;
            }

            .timeline-badge {
                left: 2px !important;
                right: auto !important;
            }

            .solutions-grid, .price-grid, .comments-grid, .articles-grid, .footer-grid, .training-grid, .help-grid {
                grid-template-columns: 1fr;
            }

            .price-card.popular {
                transform: none;
            }
        }