/* 基础样式复位 */
        :root {
            --primary: #FF6600;
            --primary-hover: #E05500;
            --primary-light: #FFF5EE;
            --primary-gradient: linear-gradient(135deg, #FF8800, #FF3300);
            --dark: #222222;
            --text: #444444;
            --light-bg: #FAFAFA;
            --border-color: #EAEAEA;
            --card-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;
            color: var(--text);
            background-color: var(--light-bg);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        ul {
            list-style: none;
        }

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

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

        .section-padding {
            padding: 80px 0;
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 700;
            position: relative;
            display: inline-block;
        }

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

        .section-header p {
            font-size: 1.1rem;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

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

        .btn-primary {
            background: var(--primary-gradient);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 102, 0, 0.4);
        }

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

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

        /* 头部导航 */
        header {
            background: #ffffff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .logo-box {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .ai-page-logo {
            height: 45px;
            object-fit: contain;
        }

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

        .nav-menu a:not(.btn) {
            font-weight: 500;
            color: var(--dark);
            padding: 5px 0;
            border-bottom: 2px solid transparent;
        }

        .nav-menu a:not(.btn):hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

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

        /* 首屏 Hero (无图) */
        .hero {
            background: radial-gradient(circle at 80% 20%, #FFF5EE 0%, #FAFAFA 100%);
            padding: 100px 0 120px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: var(--primary-gradient);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            line-height: 1.3;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
        }

        .hero-content p {
            font-size: 1.2rem;
            color: #555;
            margin-bottom: 35px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-badges {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .hero-badge {
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--dark);
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
        }

        /* 首屏右侧数据卡片 */
        .hero-data-board {
            background: #ffffff;
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.08);
            border: 1px solid #FFEEDD;
            position: relative;
        }

        .hero-data-board::after {
            content: '';
            position: absolute;
            top: -10px;
            right: -10px;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, rgba(255, 102, 0, 0.1), transparent);
            border-radius: 50%;
        }

        .data-board-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 10px;
        }

        .data-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .data-card {
            background: var(--light-bg);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .data-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .data-card .label {
            font-size: 0.85rem;
            color: #666;
        }

        /* 关于我们与数据指标 */
        .about-section {
            background-color: #ffffff;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            margin-bottom: 20px;
            color: var(--text);
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .about-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .about-feature-item svg {
            width: 24px;
            height: 24px;
            fill: var(--primary);
            flex-shrink: 0;
            margin-top: 3px;
        }

        .about-feature-item h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .about-feature-item p {
            font-size: 0.85rem;
            color: #666;
            margin: 0;
        }

        /* AIGC模型聚合 */
        .models-section {
            background: var(--light-bg);
        }

        .models-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .model-tag {
            background: #ffffff;
            padding: 10px 20px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .model-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 102, 0, 0.1);
        }

        /* 服务能力与场景 */
        .services-section {
            background-color: #ffffff;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: #FFEEDD;
            box-shadow: var(--card-shadow);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-gradient);
            opacity: 0;
            transition: var(--transition);
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-icon svg {
            width: 28px;
            height: 28px;
            fill: currentColor;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: #666;
            margin-bottom: 15px;
        }

        .service-card .badge {
            display: inline-block;
            background: #FFF0E5;
            color: var(--primary);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* 一站式AIGC制作与案例展示 */
        .portfolio-section {
            background: var(--light-bg);
        }

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

        .portfolio-card {
            background: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .portfolio-media {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #eee;
        }

        .portfolio-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .portfolio-info {
            padding: 20px;
        }

        .portfolio-info h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .portfolio-info p {
            font-size: 0.9rem;
            color: #666;
        }

        /* 对比评测 */
        .compare-section {
            background: #ffffff;
        }

        .compare-table-wrapper {
            overflow-x: auto;
            box-shadow: var(--card-shadow);
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

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

        .compare-table th, .compare-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: var(--light-bg);
            color: var(--dark);
            font-weight: 700;
        }

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

        .compare-table td.highlight {
            background: var(--primary-light);
            font-weight: 600;
            color: var(--primary);
        }

        .compare-score-box {
            background: var(--primary-gradient);
            color: white;
            border-radius: 12px;
            padding: 30px;
            display: flex;
            align-items: center;
            justify-content: space-around;
            margin-top: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .compare-score-item {
            text-align: center;
        }

        .compare-score-item h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
            opacity: 0.9;
        }

        .compare-score-item .score {
            font-size: 2.8rem;
            font-weight: 800;
        }

        .compare-score-item .star {
            color: #FFD700;
            font-size: 1.5rem;
        }

        /* Token比价与解决方案 */
        .token-section {
            background: var(--light-bg);
        }

        .token-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            margin-top: 20px;
        }

        .token-table th, .token-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }

        .token-table th {
            background: var(--dark);
            color: #fff;
        }

        .token-table tr:hover td {
            background: var(--primary-light);
        }

        .price-low {
            color: #00AA00;
            font-weight: 600;
        }

        /* 培训中心 */
        .training-section {
            background: #ffffff;
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .training-card {
            background: var(--light-bg);
            border-radius: 12px;
            padding: 25px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }

        .training-card:hover {
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: var(--card-shadow);
            transform: translateY(-3px);
        }

        .training-card .icon {
            font-size: 2rem;
            margin-bottom: 15px;
            display: inline-block;
        }

        .training-card h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 0.85rem;
            color: #666;
        }

        /* 标准化流程 & 时间线 */
        .flow-section {
            background: var(--light-bg);
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-dot {
            position: absolute;
            top: 30px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid #fff;
            box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.2);
            z-index: 1;
        }

        .timeline-item:nth-child(odd) .timeline-dot {
            right: -8px;
        }

        .timeline-item:nth-child(even) .timeline-dot {
            left: -8px;
        }

        .timeline-content {
            background: #ffffff;
            padding: 20px;
            border-radius: 12px;
            box-shadow: var(--card-shadow);
        }

        .timeline-content h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: #666;
            margin: 0;
        }

        /* 客户评论 */
        .comments-section {
            background: #ffffff;
        }

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

        .comment-card {
            background: var(--light-bg);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .comment-card::after {
            content: '“';
            position: absolute;
            top: 15px;
            right: 20px;
            font-size: 4rem;
            color: rgba(255,102,0,0.1);
            line-height: 1;
            font-family: Georgia, serif;
        }

        .comment-text {
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

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

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

        .comment-user-info p {
            font-size: 0.8rem;
            color: #888;
        }

        /* FAQ折叠面板 & 自助排查 */
        .faq-section {
            background: var(--light-bg);
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border-radius: 8px;
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 18px 24px;
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

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

        .faq-answer-content {
            padding: 18px 24px;
            font-size: 0.95rem;
            color: var(--text);
            border-top: 1px solid var(--border-color);
        }

        /* 术语百科 & 自助排查 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            max-width: 1000px;
            margin: 40px auto 0;
        }

        .wiki-box, .trouble-box {
            background: #ffffff;
            border-radius: 12px;
            padding: 25px;
            box-shadow: var(--card-shadow);
        }

        .wiki-box h3, .trouble-box h3 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 10px;
        }

        .wiki-list li, .trouble-list li {
            margin-bottom: 12px;
            font-size: 0.9rem;
        }

        .wiki-list strong, .trouble-list strong {
            color: var(--primary);
        }

        /* 文章列表 & 行业资讯 */
        .articles-section {
            background: #ffffff;
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

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

        .article-card:hover {
            border-color: var(--primary);
            box-shadow: var(--card-shadow);
            transform: translateY(-3px);
        }

        .article-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .article-card h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .article-card p {
            font-size: 0.85rem;
            color: #666;
            margin-bottom: 15px;
        }

        .article-link {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 联系我们 & 加盟代理表单 */
        .contact-section {
            background: var(--light-bg);
        }

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

        .contact-form-box {
            background: #ffffff;
            border-radius: 16px;
            padding: 40px;
            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-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: var(--light-bg);
            font-family: inherit;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(255,102,0,0.1);
        }

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

        .contact-details {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            margin-bottom: 30px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 20px;
        }

        .contact-item:last-child {
            margin-bottom: 0;
        }

        .contact-item-icon {
            color: var(--primary);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .contact-item-text h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .contact-item-text p {
            font-size: 0.9rem;
            color: #666;
        }

        .contact-kefu-qrcode {
            background: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .contact-kefu-qrcode img {
            width: 130px;
            height: 130px;
            margin: 0 auto 15px;
        }

        .contact-kefu-qrcode p {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }

        /* 友情链接与页脚 */
        footer {
            background: var(--dark);
            color: #aaaaaa;
            padding: 60px 0 20px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #333333;
        }

        .footer-col h3 {
            color: #ffffff;
            font-size: 1.1rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-col p {
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .footer-links a {
            display: block;
            margin-bottom: 10px;
            color: #aaaaaa;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-social-pics {
            display: flex;
            gap: 15px;
            align-items: center;
            margin-top: 15px;
        }

        .footer-social-pics div {
            text-align: center;
            font-size: 0.75rem;
        }

        .footer-social-pics img {
            width: 70px;
            height: 70px;
            margin-bottom: 5px;
            background: white;
            padding: 2px;
            border-radius: 4px;
        }

        /* 友情链接区块 */
        .friend-links-box {
            padding: 20px 0;
            border-bottom: 1px solid #333333;
        }

        .friend-links-box h4 {
            color: #ffffff;
            font-size: 0.95rem;
            margin-bottom: 10px;
            font-weight: 600;
        }

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

        .friend-links-box a {
            color: #888888;
            font-size: 0.85rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 0.8rem;
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* 悬浮客服面板 */
        .float-kefu-wrapper {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-kefu-btn {
            width: 50px;
            height: 50px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .float-kefu-btn:hover {
            transform: scale(1.05);
        }

        .float-kefu-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .float-kefu-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            width: 160px;
            display: none;
            text-align: center;
        }

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

        .float-kefu-popover img {
            width: 120px;
            height: 120px;
            margin: 0 auto 10px;
        }

        .float-kefu-popover p {
            font-size: 0.8rem;
            color: var(--dark);
            font-weight: 600;
        }

        .back-to-top {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark);
            box-shadow: var(--card-shadow);
            cursor: pointer;
            transition: var(--transition);
        }

        .back-to-top:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 45px;
            }
            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions, .hero-badges {
                justify-content: center;
            }
            .portfolio-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-top: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                gap: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .portfolio-grid {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .wiki-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .timeline-dot {
                left: 12px !important;
            }
        }

        @media (max-width: 480px) {
            .hero-content h1 {
                font-size: 2.1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .compare-score-box {
                flex-direction: column;
            }
        }