:root {
            --bg-dark: #070a13;
            --bg-card: #111827;
            --neon-green: #39ff14;
            --neon-blue: #00f0ff;
            --neon-purple: #bd00ff;
            --text-main: #ffffff;
            --text-muted: #94a3b8;
            --border-color: #1f2937;
            --gradient-primary: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            --gradient-neon: linear-gradient(90deg, var(--neon-green), var(--neon-blue));
            --container-max: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: var(--neon-blue);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--neon-green);
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(7, 10, 19, 0.85);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
        }

        .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: 40px;
            width: auto;
        }

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

        .nav-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--neon-green);
            text-shadow: 0 0 10px rgba(57, 255, 20, 0.4);
        }

        .nav-btn {
            background: var(--gradient-primary);
            color: white;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 15px rgba(189, 0, 255, 0.5);
            color: white;
        }

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

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            transition: 0.3s;
        }

        /* Hero首屏 - 无图片，炫彩荧光风背景与文字 */
        .hero {
            position: relative;
            padding: 160px 0 100px;
            background: radial-gradient(circle at 10% 20%, rgba(189, 0, 255, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(0, 240, 255, 0.08) 0%, transparent 40%);
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 50%;
            transform: translateX(-50%);
            width: 200px;
            height: 200px;
            background: var(--neon-green);
            filter: blur(140px);
            opacity: 0.15;
            pointer-events: none;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            background: linear-gradient(to right, #ffffff, #94a3b8, var(--neon-blue), var(--neon-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

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

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--neon-green), var(--neon-blue));
            color: #000;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 8px;
            box-shadow: 0 0 20px rgba(57, 255, 20, 0.2);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
            color: #000;
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 14px 28px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            border-color: var(--neon-purple);
            box-shadow: 0 0 15px rgba(189, 0, 255, 0.2);
        }

        /* 统一段落结构 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-tag {
            color: var(--neon-blue);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: inline-block;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-main);
        }

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

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

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--neon-green);
            box-shadow: 0 10px 20px rgba(57, 255, 20, 0.1);
        }

        .stat-val {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--neon-green);
            margin-bottom: 5px;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* 关于我们 */
        .about-content {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .about-features {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .about-feat-item span {
            color: var(--neon-green);
            font-weight: bold;
        }

        .about-badge-card {
            background: linear-gradient(135deg, rgba(189, 0, 255, 0.1), rgba(0, 240, 255, 0.1));
            border: 1px solid var(--neon-purple);
            border-radius: 16px;
            padding: 40px;
            text-align: center;
        }

        .about-badge-card h4 {
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .about-badge-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

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

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--neon-purple);
            box-shadow: 0 10px 20px rgba(189, 0, 255, 0.15);
        }

        .service-icon {
            font-size: 2.2rem;
            color: var(--neon-blue);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

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

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .service-tags span {
            font-size: 0.75rem;
            background: rgba(255,255,255,0.05);
            padding: 4px 8px;
            border-radius: 4px;
            color: var(--text-muted);
        }

        .model-list-wrapper {
            margin-top: 40px;
            background: rgba(255, 255, 255, 0.02);
            padding: 30px;
            border-radius: 12px;
            border: 1px dashed var(--border-color);
        }

        .model-list-title {
            text-align: center;
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .model-tag {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
            color: var(--neon-blue);
            transition: all 0.3s;
        }

        .model-tag:hover {
            border-color: var(--neon-green);
            color: var(--neon-green);
        }

        /* 流程步骤 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 15px;
            position: relative;
        }

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

        .process-num {
            width: 50px;
            height: 50px;
            line-height: 50px;
            background: var(--gradient-primary);
            border-radius: 50%;
            margin: 0 auto 15px;
            font-weight: 700;
            font-size: 1.2rem;
            color: white;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

        .process-step h4 {
            font-size: 0.95rem;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
        }

        .solution-card:hover {
            border-color: var(--neon-green);
            box-shadow: 0 8px 20px rgba(57,255,20,0.1);
        }

        .solution-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--neon-green);
        }

        .solution-card p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 15px;
        }

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

        .solution-features li {
            font-size: 0.85rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-features li::before {
            content: "✓";
            color: var(--neon-blue);
        }

        /* 服务网络与标准化流程 */
        .network-section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .network-desc h3, .workflow-desc h3 {
            font-size: 1.6rem;
            margin-bottom: 20px;
            color: var(--neon-blue);
        }

        .network-map-mock {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            height: 250px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }

        .map-dot {
            width: 10px;
            height: 10px;
            background: var(--neon-green);
            border-radius: 50%;
            position: absolute;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.9); opacity: 0.8; box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.4); }
            70% { transform: scale(1.2); opacity: 0.4; box-shadow: 0 0 0 10px rgba(57, 255, 20, 0); }
            100% { transform: scale(0.9); opacity: 0.8; box-shadow: 0 0 0 0 rgba(57, 255, 20, 0); }
        }

        .timeline {
            border-left: 2px solid var(--border-color);
            padding-left: 20px;
            margin-left: 10px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 25px;
        }

        .timeline-item::before {
            content: '';
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--neon-purple);
            position: absolute;
            left: -27px;
            top: 5px;
            border: 2px solid var(--bg-dark);
        }

        .timeline-item h4 {
            font-size: 0.95rem;
            margin-bottom: 5px;
        }

        .timeline-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 技术标准 */
        .tech-standards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tech-card {
            background: var(--bg-card);
            border-top: 3px solid var(--neon-blue);
            border-radius: 8px;
            padding: 25px 20px;
            text-align: center;
        }

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

        .tech-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 案例中心 - 包含指定图片 */
        .case-gallery {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .case-left {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .case-right {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .case-img-wrap {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

        .case-img-wrap:hover img {
            transform: scale(1.05);
        }

        .case-info {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(7,10,19,0.9), rgba(7,10,19,0));
            padding: 20px;
        }

        .case-info h4 {
            font-size: 1.1rem;
            color: white;
            margin-bottom: 5px;
        }

        .case-info p {
            font-size: 0.85rem;
            color: var(--neon-blue);
        }

        /* 对比评测 - 9.9分 */
        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
        }

        .review-score-area {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 30px;
            margin-bottom: 30px;
        }

        .score-box {
            text-align: center;
        }

        .score-val {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--neon-green);
        }

        .score-max {
            font-size: 1.2rem;
            color: var(--text-muted);
        }

        .star-box {
            font-size: 1.5rem;
            color: #ffd700;
            margin-top: 5px;
        }

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

        .review-badge {
            background: rgba(57, 255, 20, 0.1);
            border: 1px solid var(--neon-green);
            color: var(--neon-green);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
        }

        .compare-table-wrapper {
            overflow-x: auto;
        }

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

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

        .compare-table th {
            background: rgba(255,255,255,0.02);
            color: var(--text-main);
            font-weight: 600;
        }

        .compare-table td {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .compare-table tr:hover td {
            color: var(--text-main);
            background: rgba(255,255,255,0.01);
        }

        .compare-table .highlight {
            color: var(--neon-green);
            font-weight: 600;
        }

        /* 需求匹配表单 */
        .matching-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .form-info h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

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

        .interactive-form {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .form-control {
            width: 100%;
            background: var(--bg-dark);
            border: 1px solid var(--border-color);
            color: white;
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--neon-blue);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }

        /* Token 比价 */
        .token-price-wrapper {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        /* 培训版块 */
        .training-cards {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .train-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px 15px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .train-card:hover {
            transform: translateY(-5px);
            border-color: var(--neon-purple);
            box-shadow: 0 5px 15px rgba(189, 0, 255, 0.2);
        }

        .train-icon {
            font-size: 1.8rem;
            color: var(--neon-purple);
            margin-bottom: 10px;
        }

        .train-card h4 {
            font-size: 0.9rem;
            margin-bottom: 8px;
        }

        .train-card p {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 帮助与自助排查 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .help-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 10px;
        }

        .help-card h3 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            color: var(--neon-blue);
        }

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

        .help-card ul li {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            cursor: pointer;
            transition: color 0.2s;
        }

        .help-card ul li:hover {
            color: var(--neon-green);
        }

        /* FAQ 板块 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 18px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 500;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding-top: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-top: 12px;
        }

        .faq-icon::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--neon-green);
        }

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

        /* 网站术语百科 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .glossary-item h4 {
            color: var(--neon-blue);
            font-size: 1rem;
            margin-bottom: 5px;
        }

        .glossary-item p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

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

        .comment-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
        }

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

        .comment-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.85rem;
        }

        .user-info h5 {
            font-size: 0.9rem;
            margin-bottom: 2px;
        }

        .user-info p {
            font-size: 0.75rem;
            color: var(--neon-blue);
        }

        /* 行业资讯 & 知识库 */
        .articles-area {
            background: var(--bg-card);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .articles-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .articles-list li {
            border-bottom: 1px dashed var(--border-color);
            padding-bottom: 15px;
        }

        .articles-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .articles-list a {
            display: flex;
            justify-content: space-between;
            font-size: 0.95rem;
            color: var(--text-main);
        }

        .articles-list a:hover {
            color: var(--neon-green);
        }

        .article-date {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* 联系我们 & 二维码等 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-details h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }

        .contact-details p {
            color: var(--text-muted);
            margin-bottom: 15px;
            font-size: 0.95rem;
        }

        .contact-details strong {
            color: var(--text-main);
        }

        .contact-media {
            display: flex;
            gap: 30px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .media-box {
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 12px;
            flex: 1;
            min-width: 150px;
        }

        .media-box img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 10px;
        }

        .media-box p {
            font-size: 0.8rem;
            margin: 0;
            color: var(--text-muted);
        }

        .banner-group {
            margin-top: 40px;
            display: flex;
            gap: 15px;
            overflow: hidden;
            border-radius: 12px;
        }

        .banner-group img {
            flex: 1;
            height: 150px;
            object-fit: cover;
            transition: transform 0.3s;
        }

        .banner-group img:hover {
            transform: scale(1.05);
        }

        /* 页脚 & 友情链接 */
        footer {
            background: #04060b;
            padding: 50px 0 30px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

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

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

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-muted);
        }

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

        .friend-links-area {
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            margin-bottom: 30px;
        }

        .friend-links-title {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
        }

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

        .friend-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .friend-links a:hover {
            color: var(--neon-blue);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .ai-page-home-link {
            color: var(--neon-green);
            font-weight: bold;
        }

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: var(--gradient-primary);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(189, 0, 255, 0.4);
            cursor: pointer;
            transition: all 0.3s;
        }

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

        .floating-kefu-content {
            display: none;
            position: absolute;
            bottom: 75px;
            right: 0;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            width: 220px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            text-align: center;
        }

        .floating-kefu:hover .floating-kefu-content {
            display: block;
        }

        .floating-kefu-content img {
            width: 140px;
            height: 140px;
            object-fit: cover;
            margin-bottom: 10px;
            border-radius: 6px;
        }

        .floating-kefu-content p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 移动端响应式 */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .process-flow { grid-template-columns: repeat(3, 1fr); gap: 20px; }
            .solutions-grid { grid-template-columns: repeat(2, 1fr); }
            .training-cards { grid-template-columns: repeat(3, 1fr); }
            .case-gallery { grid-template-columns: 1fr; }
            .help-grid { grid-template-columns: 1fr; }
            .glossary-grid { grid-template-columns: repeat(2, 1fr); }
            .comments-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-dark);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }

            .nav-links.show {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero h1 { font-size: 2rem; }
            .about-content { grid-template-columns: 1fr; }
            .network-section-grid { grid-template-columns: 1fr; }
            .matching-layout { grid-template-columns: 1fr; }
            .contact-layout { grid-template-columns: 1fr; }
            .footer-top { grid-template-columns: 1fr; }
            .process-flow { grid-template-columns: repeat(2, 1fr); }
            .training-cards { grid-template-columns: repeat(2, 1fr); }
        }