/* 变量及全局设计系统（撞色艳色风） */
        :root {
            --primary: #0052ff; /* 电光蓝 */
            --secondary: #ff6b00; /* 日光橙 */
            --accent: #10b981; /* 极光绿 */
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --container-max: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 2px solid var(--text-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-area img {
            height: 45px;
            width: auto;
        }

        .logo-area span {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-dark);
        }

        .nav-menu {
            display: flex;
            gap: 24px;
            align-items: center;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            padding: 6px 0;
            border-bottom: 2px solid transparent;
        }

        .nav-menu a:hover {
            color: var(--primary);
            border-bottom: 2px solid var(--secondary);
        }

        .nav-menu .ai-page-home-link {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-btn {
            background-color: var(--text-dark);
            color: var(--bg-white);
            padding: 10px 20px;
            border-radius: 4px;
            font-weight: bold;
            text-decoration: none;
            font-size: 14px;
            border: 2px solid var(--text-dark);
            transition: var(--transition);
        }

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

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* 首屏 Hero 区域（坚决无图片） */
        .hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #020617 100%);
            color: var(--bg-white);
            padding: 100px 0 120px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: var(--primary);
            filter: blur(150px);
            top: -50px;
            left: -50px;
            opacity: 0.5;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: var(--secondary);
            filter: blur(150px);
            bottom: -50px;
            right: -50px;
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 10;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background-color: var(--secondary);
            color: var(--text-dark);
            font-weight: 800;
            text-transform: uppercase;
            padding: 6px 16px;
            font-size: 13px;
            border-radius: 4px;
            margin-bottom: 24px;
            letter-spacing: 1px;
            box-shadow: 4px 4px 0px var(--bg-white);
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 24px;
            color: var(--bg-white);
            letter-spacing: -1px;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: #94a3b8;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--secondary);
            color: var(--text-dark);
            padding: 16px 36px;
            font-size: 16px;
            font-weight: 800;
            text-decoration: none;
            border-radius: 4px;
            box-shadow: 4px 4px 0px var(--bg-white);
            transition: var(--transition);
            border: 2px solid var(--text-dark);
        }

        .btn-primary:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--bg-white);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--bg-white);
            padding: 16px 36px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            border-radius: 4px;
            border: 2px solid var(--bg-white);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background-color: var(--bg-white);
            color: var(--text-dark);
        }

        /* 全局通用 Section */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }

        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--text-dark);
            display: inline-block;
            position: relative;
            padding-bottom: 15px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 5px;
            background-color: var(--secondary);
        }

        .section-title p {
            color: var(--text-muted);
            margin-top: 15px;
            font-size: 16px;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--bg-white);
            padding: 40px 30px;
            border: 2px solid var(--text-dark);
            box-shadow: 6px 6px 0px var(--text-dark);
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: 10px 10px 0px var(--primary);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-muted);
        }

        /* 关于我们与软件介绍 */
        .about-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 16px;
        }

        .features-bullet {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 30px;
        }

        .features-bullet li {
            position: relative;
            padding-left: 24px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .features-bullet li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 900;
        }

        .about-visual {
            background: var(--text-dark);
            color: var(--bg-white);
            padding: 40px;
            border-radius: 4px;
            border: 2px solid var(--primary);
            box-shadow: 8px 8px 0px var(--secondary);
        }

        .about-visual h4 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--secondary);
        }

        .about-visual ul {
            list-style: none;
        }

        .about-visual ul li {
            padding: 12px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
            font-size: 14px;
        }

        /* 全平台 AIGC 服务体系 */
        .system-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .tag-pill {
            background-color: var(--bg-white);
            border: 2px solid var(--text-dark);
            color: var(--text-dark);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 700;
            border-radius: 30px;
            transition: var(--transition);
        }

        .tag-pill:hover {
            background-color: var(--primary);
            color: var(--bg-white);
            transform: scale(1.05);
        }

        .tag-pill.highlight {
            background-color: var(--secondary);
            color: var(--text-dark);
        }

        /* 全自动 AIGC 制作流程 & 标准化服务流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-node {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 30px 20px;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .process-node:hover {
            box-shadow: 6px 6px 0px var(--text-dark);
            transform: translateY(-5px);
        }

        .node-step {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: var(--text-dark);
            font-weight: 900;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--text-dark);
        }

        .node-title {
            font-weight: 800;
            margin-top: 15px;
            margin-bottom: 12px;
            font-size: 18px;
        }

        .node-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .sol-card {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 40px 30px;
            position: relative;
            transition: var(--transition);
        }

        .sol-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 6px;
            background: var(--primary);
        }

        .sol-card:nth-child(even)::before {
            background: var(--secondary);
        }

        .sol-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 82, 255, 0.1);
        }

        .sol-title {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .sol-desc {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* 全国服务网络 */
        .network-section {
            background-color: var(--text-dark);
            color: var(--bg-white);
        }

        .network-section .section-title h2 {
            color: var(--bg-white);
        }

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

        .network-map-visual {
            border: 2px solid var(--secondary);
            padding: 40px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.05);
            text-align: center;
        }

        .network-map-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 15px;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .network-item {
            background: rgba(255,255,255,0.1);
            padding: 15px;
            text-align: center;
            border-radius: 4px;
            font-weight: 700;
        }

        /* 客户案例中心 (包含横版素材图片) */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .case-card {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 8px 8px 0px var(--text-dark);
        }

        .case-img-wrapper {
            width: 100%;
            height: 240px;
            overflow: hidden;
            border-bottom: 2px solid var(--text-dark);
        }

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

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

        .case-body {
            padding: 30px;
        }

        .case-tag {
            display: inline-block;
            background: var(--primary);
            color: var(--bg-white);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 2px;
            margin-bottom: 15px;
        }

        .case-title {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .case-text {
            color: var(--text-muted);
            font-size: 15px;
        }

        /* 对比评测 & Token 比价 (表格) */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 2px solid var(--text-dark);
            background: var(--bg-white);
            box-shadow: 8px 8px 0px var(--text-dark);
            margin-top: 30px;
        }

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

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        th {
            background-color: var(--text-dark);
            color: var(--bg-white);
            font-weight: 800;
        }

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

        tr:nth-child(even) {
            background-color: #f8fafc;
        }

        .highlight-cell {
            background-color: rgba(0, 82, 255, 0.05);
            font-weight: 700;
            color: var(--primary);
        }

        /* 推荐评分卡片 */
        .score-card {
            background: linear-gradient(135deg, var(--primary) 0%, #003cc4 100%);
            color: var(--bg-white);
            padding: 40px;
            border: 2px solid var(--text-dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            box-shadow: 8px 8px 0px var(--secondary);
        }

        .score-info h4 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .score-number {
            font-size: 4rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1;
        }

        .score-stars {
            color: var(--secondary);
            font-size: 28px;
            letter-spacing: 5px;
        }

        /* 培训中心 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .training-card {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 30px;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
            box-shadow: 6px 6px 0px var(--text-dark);
        }

        .training-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--text-dark);
            font-weight: 800;
            font-size: 12px;
            padding: 4px 10px;
            margin-bottom: 15px;
        }

        .training-title {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        /* 智能需求匹配与自助排查 */
        .interactive-section {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 40px;
            margin-bottom: 40px;
        }

        .diagnostic-box {
            background-color: var(--bg-light);
            border: 2px dashed var(--text-dark);
            padding: 30px;
            border-radius: 4px;
        }

        .diagnostic-title {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .diagnostic-options {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .diag-btn {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 10px 20px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
        }

        .diag-btn:hover, .diag-btn.active {
            background: var(--primary);
            color: var(--bg-white);
        }

        .diag-result {
            display: none;
            padding: 20px;
            background: var(--bg-white);
            border-left: 5px solid var(--secondary);
            font-weight: 600;
        }

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

        .wiki-item {
            background: var(--bg-white);
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .wiki-item:hover {
            border-color: var(--text-dark);
            box-shadow: 4px 4px 0px var(--secondary);
        }

        .wiki-word {
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .wiki-def {
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .review-card {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 30px;
            box-shadow: 6px 6px 0px var(--text-dark);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-style: italic;
            color: var(--text-dark);
            font-weight: 600;
            margin-bottom: 20px;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .avatar-placeholder {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            color: var(--text-dark);
            border: 2px solid var(--text-dark);
        }

        .author-info h5 {
            font-weight: 800;
            font-size: 15px;
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 30px;
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: var(--primary);
            box-shadow: 6px 6px 0px var(--primary);
        }

        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .news-title {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .news-title a {
            color: var(--text-dark);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 帮助中心与 FAQ 折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 2px solid var(--text-dark);
            margin-bottom: 15px;
            overflow: hidden;
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 800;
            background-color: var(--bg-white);
            transition: var(--transition);
            user-select: none;
        }

        .faq-header:hover {
            background-color: rgba(0, 82, 255, 0.05);
        }

        .faq-icon {
            font-size: 20px;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            padding: 0 24px;
            background-color: var(--bg-light);
        }

        .faq-body p {
            padding: 20px 0;
            color: var(--text-muted);
            font-size: 15px;
        }

        .faq-item.active .faq-body {
            max-height: 1000px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

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

        /* 联系我们与表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 40px;
            box-shadow: 6px 6px 0px var(--text-dark);
        }

        .contact-info h3 {
            font-size: 24px;
            font-weight: 900;
            margin-bottom: 24px;
        }

        .contact-details {
            margin-bottom: 30px;
        }

        .contact-detail-item {
            margin-bottom: 15px;
            font-size: 15px;
        }

        .contact-detail-item strong {
            color: var(--primary);
        }

        .qrcode-box {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px dashed var(--border-color);
        }

        .qrcode-box img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--text-dark);
        }

        .form-box {
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 40px;
            box-shadow: 8px 8px 0px var(--secondary);
        }

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

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

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--text-dark);
            font-size: 15px;
            font-family: inherit;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 3px 3px 0 var(--primary);
        }

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

        .submit-btn {
            background: var(--secondary);
            color: var(--text-dark);
            border: 2px solid var(--text-dark);
            padding: 16px;
            width: 100%;
            font-size: 16px;
            font-weight: 800;
            cursor: pointer;
            box-shadow: 4px 4px 0 var(--text-dark);
            transition: var(--transition);
        }

        .submit-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0 var(--text-dark);
        }

        /* 宣传图展示区 (单张 banner) */
        .banner-showcase {
            background: var(--bg-white);
            text-align: center;
            padding: 60px 0;
        }

        .banner-showcase img {
            border: 2px solid var(--text-dark);
            box-shadow: 8px 8px 0 var(--text-dark);
        }

        /* 页脚 */
        footer {
            background-color: var(--text-dark);
            color: #94a3b8;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h4 {
            color: var(--bg-white);
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-links h5 {
            color: var(--bg-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-links ul li {
            margin-bottom: 12px;
        }

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

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

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 浮动客服入口 */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            background-color: var(--bg-white);
            border: 2px solid var(--text-dark);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 4px 4px 0 var(--text-dark);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .float-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0 var(--secondary);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--text-dark);
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--bg-white);
            border: 2px solid var(--text-dark);
            padding: 15px;
            box-shadow: 6px 6px 0 var(--text-dark);
            display: none;
            text-align: center;
            width: 160px;
        }

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

        .qr-popover p {
            font-size: 12px;
            font-weight: 700;
            margin-top: 8px;
            color: var(--text-dark);
        }

        .float-btn:hover .qr-popover {
            display: block;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid, .solutions-grid, .training-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .wiki-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                border-bottom: 2px solid var(--text-dark);
                flex-direction: column;
                padding: 30px;
                gap: 20px;
                display: none;
            }

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

            .hero h1 {
                font-size: 2.2rem;
            }

            .about-layout, .network-layout, .cases-grid, .contact-layout {
                grid-template-columns: 1fr;
            }

            .stats-grid, .solutions-grid, .training-grid, .reviews-grid, .wiki-grid, .process-flow, .news-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .score-card {
                flex-direction: column;
                text-align: center;
                gap: 20px;
            }
        }