:root {
            --bg-color: #0b0f19;
            --card-bg: rgba(20, 26, 40, 0.7);
            --card-border: rgba(0, 242, 254, 0.15);
            --primary: #00f2fe;
            --secondary: #9b51e0;
            --accent: #ff007f;
            --text-main: #f3f4f6;
            --text-sub: #9ca3af;
            --glow: 0 0 15px rgba(0, 242, 254, 0.35);
            --glow-pink: 0 0 15px rgba(255, 0, 127, 0.35);
            --container-width: 1200px;
        }

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

        body {
            background-color: var(--bg-color);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(155, 81, 224, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(0, 242, 254, 0.08) 0%, transparent 40%);
        }

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

        /* 霓虹按钮样式 */
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-neon-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #050811;
            box-shadow: var(--glow);
        }

        .btn-neon-primary:hover {
            box-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
            transform: translateY(-2px);
        }

        .btn-neon-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            box-shadow: inset 0 0 5px rgba(0, 242, 254, 0.2);
        }

        .btn-neon-outline:hover {
            background: rgba(0, 242, 254, 0.1);
            box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
            transform: translateY(-2px);
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 15, 25, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }

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

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

        .ai-page-logo {
            height: 38px;
            width: auto;
        }

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

        .nav-menu a {
            color: var(--text-sub);
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s;
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-menu a:hover, .nav-menu a.active {
            color: var(--primary);
            text-shadow: 0 0 8px rgba(0, 242, 254, 0.5);
        }

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

        .ai-page-home-link {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .ai-page-home-link:hover {
            color: var(--accent);
        }

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

        .menu-toggle span {
            width: 25px;
            height: 2px;
            background-color: var(--text-main);
            transition: 0.3s;
        }

        /* 头部首屏 Hero (无图片) */
        .hero-section {
            padding: 160px 0 100px;
            position: relative;
            text-align: center;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 250px;
            background: radial-gradient(circle, rgba(155, 81, 224, 0.15) 0%, transparent 70%);
            z-index: -1;
            filter: blur(40px);
        }

        .hero-content h1 {
            font-size: 3rem;
            line-height: 1.25;
            margin-bottom: 24px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff 30%, var(--primary) 70%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 20px rgba(0,0,0,0.5);
        }

        .hero-content p {
            font-size: 1.25rem;
            color: var(--text-sub);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
            flex-wrap: wrap;
        }

        /* 亮点指标卡片 */
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .metric-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 25px 20px;
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .metric-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: var(--glow);
        }

        .metric-card .num {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
            text-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
        }

        .metric-card .label {
            font-size: 0.9rem;
            color: var(--text-sub);
        }

        /* 基础区块 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid rgba(255,255,255,0.03);
        }

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

        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 15px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-title p {
            color: var(--text-sub);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 平台介绍 / 软件介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 20px;
        }

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

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

        .intro-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .intro-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
            text-shadow: var(--glow);
        }

        /* 全平台AIGC服务体系 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 16px;
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent);
            box-shadow: var(--glow-pink);
        }

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

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

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

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

        .service-tags span {
            background: rgba(0, 242, 254, 0.1);
            color: var(--primary);
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
        }

        /* AIGC模型滚动面板 */
        .model-panel {
            background: rgba(15, 22, 38, 0.5);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 50px;
        }

        .model-panel h4 {
            text-align: center;
            margin-bottom: 25px;
            color: var(--text-sub);
            font-size: 1.1rem;
            letter-spacing: 1px;
        }

        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .model-tag {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 6px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-sub);
            transition: all 0.3s ease;
        }

        .model-tag:hover {
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(0,242,254,0.3);
            transform: scale(1.05);
        }

        /* 全自动AIGC制作流程 */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .workflow-step {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            position: relative;
        }

        .workflow-step .step-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #000;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px;
            box-shadow: var(--glow);
        }

        .workflow-step h3 {
            margin-bottom: 10px;
            color: #fff;
        }

        .workflow-step p {
            font-size: 0.9rem;
            color: var(--text-sub);
        }

        /* 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 35px;
            display: flex;
            gap: 20px;
            transition: all 0.3s ease;
        }

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

        .solution-icon {
            font-size: 2.2rem;
        }

        .solution-info h3 {
            color: #fff;
            margin-bottom: 12px;
        }

        .solution-info p {
            color: var(--text-sub);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .solution-meta {
            display: flex;
            gap: 15px;
            font-size: 0.85rem;
            color: var(--primary);
        }

        /* 标准化服务全流程 (8步) & 技术标准 */
        .std-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .std-card {
            background: rgba(20, 26, 40, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            position: relative;
        }

        .std-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: var(--primary);
        }

        .std-card h4 {
            color: #fff;
            margin-bottom: 8px;
            font-size: 1rem;
        }

        .std-card p {
            color: var(--text-sub);
            font-size: 0.85rem;
        }

        .tech-box {
            background: linear-gradient(135deg, rgba(20, 26, 40, 0.8), rgba(11, 15, 25, 0.9));
            border: 1px solid var(--card-border);
            padding: 30px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .tech-item h5 {
            color: var(--text-sub);
            margin-bottom: 5px;
            font-size: 0.9rem;
        }

        .tech-item p {
            color: var(--primary);
            font-weight: bold;
            font-size: 1.1rem;
        }

        /* 全国服务网络 */
        .network-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .map-mockup {
            background: radial-gradient(circle, rgba(155, 81, 224, 0.15) 0%, transparent 70%);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            height: 350px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .map-mockup::after {
            content: "全国骨干算力网与本地化服务中心分布";
            color: var(--primary);
            font-weight: bold;
            text-shadow: var(--glow);
        }

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

        .network-list li {
            margin-bottom: 20px;
            border-left: 3px solid var(--accent);
            padding-left: 15px;
        }

        .network-list h4 {
            color: #fff;
            margin-bottom: 5px;
        }

        .network-list p {
            color: var(--text-sub);
            font-size: 0.9rem;
        }

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

        .case-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

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

        .case-img-box {
            width: 100%;
            height: 200px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #101625;
        }

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

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

        .case-body {
            padding: 20px;
        }

        .case-body h3 {
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .case-body p {
            font-size: 0.85rem;
            color: var(--text-sub);
        }

        /* 对比评测 */
        .evaluation-box {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--glow);
        }

        .eval-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding-bottom: 25px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .eval-score {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .score-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary);
            text-shadow: var(--glow);
            line-height: 1;
        }

        .score-stars {
            font-size: 1.5rem;
            color: #ffb703;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .eval-table th, .eval-table td {
            padding: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .eval-table th {
            color: var(--text-sub);
            font-weight: 600;
        }

        .eval-table tr:hover td {
            background: rgba(255,255,255,0.02);
        }

        .eval-table td.highlight {
            color: var(--primary);
            font-weight: bold;
        }

        /* Token比价参考 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .price-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .price-card.featured {
            border-color: var(--accent);
            box-shadow: var(--glow-pink);
            position: relative;
        }

        .price-card.featured::after {
            content: "超低折扣";
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--accent);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
        }

        .price-card h3 {
            color: #fff;
            margin-bottom: 15px;
        }

        .price-tag {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .price-tag span {
            font-size: 0.9rem;
            color: var(--text-sub);
            font-weight: normal;
        }

        .price-list {
            list-style: none;
            text-align: left;
            margin-bottom: 25px;
        }

        .price-list li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.03);
            color: var(--text-sub);
            font-size: 0.9rem;
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .training-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 35px;
        }

        .training-card h3 {
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .training-card h3::before {
            content: "🎓";
        }

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

        .course-item {
            padding: 15px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .course-item:last-child {
            border-bottom: none;
        }

        .course-title {
            font-weight: bold;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .course-desc {
            font-size: 0.85rem;
            color: var(--text-sub);
        }

        /* 帮助中心 & 术语百科 & 自助排查 */
        .help-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .help-box h3 {
            margin-bottom: 20px;
            color: #fff;
            border-bottom: 1px solid var(--card-border);
            padding-bottom: 10px;
        }

        .trouble-list, .wiki-list {
            list-style: none;
        }

        .trouble-list li, .wiki-list li {
            margin-bottom: 15px;
            background: rgba(255,255,255,0.02);
            padding: 15px;
            border-radius: 8px;
        }

        .trouble-list h4, .wiki-list h4 {
            color: var(--primary);
            margin-bottom: 5px;
            font-size: 0.95rem;
        }

        .trouble-list p, .wiki-list p {
            color: var(--text-sub);
            font-size: 0.85rem;
        }

        /* 常见用户问题 FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-header {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-header h3 {
            font-size: 1.05rem;
            color: #fff;
            margin: 0;
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(0,0,0,0.1);
        }

        .faq-content {
            padding: 20px;
            color: var(--text-sub);
            font-size: 0.95rem;
            border-top: 1px solid rgba(255,255,255,0.03);
        }

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

        .faq-item.open .faq-body {
            max-height: 500px;
        }

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

        .comment-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            padding: 25px;
            position: relative;
        }

        .comment-card::before {
            content: "“";
            position: absolute;
            top: 15px;
            left: 20px;
            font-size: 4rem;
            color: rgba(0, 242, 254, 0.1);
            line-height: 1;
        }

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

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

        .user-info h4 {
            color: #fff;
            font-size: 0.95rem;
        }

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

        /* 资讯与最新文章 */
        .articles-box {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 30px;
            margin-top: 40px;
        }

        .articles-box h3 {
            color: #fff;
            margin-bottom: 20px;
        }

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

        .article-item {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 15px;
        }

        .article-item a {
            color: var(--text-sub);
            text-decoration: none;
            transition: color 0.3s;
        }

        .article-item a:hover {
            color: var(--primary);
        }

        /* 需求匹配表单 & 联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

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

        .form-box h3 {
            color: #fff;
            margin-bottom: 25px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-group label {
            font-size: 0.9rem;
            color: var(--text-sub);
        }

        .form-group input, .form-group select, .form-group textarea {
            background: rgba(10, 15, 26, 0.8);
            border: 1px solid var(--card-border);
            padding: 12px;
            border-radius: 8px;
            color: #fff;
            outline: none;
            transition: border-color 0.3s;
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
        }

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

        .info-card {
            background: rgba(20, 26, 40, 0.4);
            border: 1px solid rgba(255,255,255,0.05);
            border-radius: 12px;
            padding: 25px;
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }

        .info-icon {
            font-size: 1.8rem;
        }

        .info-details h4 {
            color: #fff;
            margin-bottom: 8px;
        }

        .info-details p, .info-details a {
            color: var(--text-sub);
            font-size: 0.9rem;
            text-decoration: none;
        }

        .info-details img {
            max-width: 120px;
            margin-top: 10px;
            border: 1px solid var(--card-border);
            border-radius: 8px;
        }

        /* 友情链接与页脚 */
        footer {
            background: #050811;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }

        .footer-grid {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            max-width: 300px;
        }

        .footer-brand p {
            color: var(--text-sub);
            font-size: 0.9rem;
            margin-top: 15px;
        }

        .footer-links h4 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 20px;
        }

        .friend-links a {
            color: var(--text-sub);
            text-decoration: none;
            font-size: 0.85rem;
            transition: color 0.3s;
        }

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

        .copyright-bar {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 30px;
            text-align: center;
            color: var(--text-sub);
            font-size: 0.85rem;
        }

        /* 侧边浮动栏 */
        .floating-bar {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 15px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: var(--card-bg);
            border: 1px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--glow);
            transition: all 0.3s;
            text-decoration: none;
            color: var(--primary);
            font-size: 1.2rem;
            position: relative;
        }

        .float-btn:hover {
            background: var(--primary);
            color: #000;
            transform: scale(1.1);
        }

        .float-qrcode {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--bg-color);
            border: 1px solid var(--primary);
            padding: 10px;
            border-radius: 8px;
            display: none;
            box-shadow: var(--glow);
        }

        .float-btn:hover .float-qrcode {
            display: block;
        }

        .float-qrcode img {
            width: 120px;
            height: 120px;
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .hero-content h1 { font-size: 2.5rem; }
            .hero-metrics { grid-template-columns: repeat(2, 1fr); }
            .services-grid { grid-template-columns: repeat(2, 1fr); }
            .workflow-timeline { grid-template-columns: repeat(2, 1fr); }
            .solutions-grid { grid-template-columns: 1fr; }
            .case-gallery { grid-template-columns: repeat(2, 1fr); }
            .price-grid { grid-template-columns: repeat(2, 1fr); }
            .training-grid { grid-template-columns: 1fr; }
            .help-layout { grid-template-columns: 1fr; }
            .comments-grid { grid-template-columns: 1fr; }
            .contact-layout { grid-template-columns: 1fr; }
            .std-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-color);
                border-bottom: 1px solid rgba(255,255,255,0.1);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.open { display: flex; }
            .menu-toggle { display: flex; }
            .intro-grid { grid-template-columns: 1fr; }
            .network-wrap { grid-template-columns: 1fr; }
            .std-grid { grid-template-columns: 1fr; }
            .hero-metrics { grid-template-columns: 1fr; }
            .services-grid { grid-template-columns: 1fr; }
            .workflow-timeline { grid-template-columns: 1fr; }
            .case-gallery { grid-template-columns: 1fr; }
            .price-grid { grid-template-columns: 1fr; }
            .form-grid { grid-template-columns: 1fr; }
            .form-group-full { grid-column: span 1; }
            .eval-header { flex-direction: column; align-items: flex-start; }
        }