/* 样式重置与全局定义 */
        :root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #3b82f6;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --gradient-rainbow: linear-gradient(135deg, #4f46e5 0%, #3b82f6 50%, #ec4899 100%);
            --gradient-soft: linear-gradient(135deg, #f5f7ff 0%, #fdf4f7 100%);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a:hover {
            color: var(--secondary);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-wrapper {
            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;
        }

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--gradient-rainbow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: var(--primary);
            background-color: rgba(79, 70, 229, 0.05);
        }

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

        .btn-register {
            background: var(--gradient-rainbow);
            color: white;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: var(--shadow-sm);
        }

        .btn-register:hover {
            color: white;
            opacity: 0.9;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .hamburger {
            display: none;
            cursor: pointer;
            background: none;
            border: none;
            font-size: 1.5rem;
        }

        /* 纯文本/样式首屏 (无图片) */
        .hero-section {
            background: var(--gradient-soft);
            padding: 100px 0 80px 0;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: rgba(129, 140, 248, 0.15);
            border-radius: 50%;
            top: -50px;
            right: -50px;
            filter: blur(80px);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: rgba(236, 72, 153, 0.1);
            border-radius: 50%;
            bottom: -100px;
            left: -100px;
            filter: blur(100px);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

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

        .hero-sub {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .hero-btn-group {
            display: flex;
            gap: 15px;
            margin-bottom: 40px;
        }

        .btn-primary {
            background: var(--gradient-rainbow);
            color: white;
            padding: 15px 30px;
            border-radius: 8px;
            font-weight: bold;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
        }

        .btn-primary:hover {
            color: white;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-dark);
            border: 2px solid var(--border-color);
            padding: 15px 30px;
            border-radius: 8px;
            font-weight: bold;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

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

        .hero-features {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .h-feat-item {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 10px 15px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .h-feat-item::before {
            content: '✦';
            color: var(--secondary);
        }

        /* 纯CSS装饰性仪表盘卡片（无图片，符合首屏限制） */
        .hero-visual {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .visual-card {
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .visual-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--gradient-rainbow);
            border-radius: 12px 12px 0 0;
        }

        .visual-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            font-weight: bold;
        }

        .visual-badge {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(236, 72, 153, 0.1));
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
        }

        .visual-bar-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .visual-bar-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .visual-bar {
            height: 8px;
            background: var(--border-color);
            border-radius: 4px;
            overflow: hidden;
        }

        .visual-bar-fill {
            height: 100%;
            background: var(--gradient-rainbow);
            border-radius: 4px;
        }

        /* 通用区块设置 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px auto;
        }

        .section-tag {
            color: var(--primary);
            text-transform: uppercase;
            font-weight: 700;
            letter-spacing: 2px;
            font-size: 0.85rem;
            margin-bottom: 10px;
            display: inline-block;
        }

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

        .section-desc {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* 数据指标 */
        .stats-section {
            background: var(--bg-white);
            padding: 50px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            text-align: center;
        }

        .stat-card {
            padding: 20px;
        }

        .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            background: var(--gradient-rainbow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 关于我们与模型支持 */
        .about-section {
            background: var(--bg-light);
        }

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

        .about-content h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 25px;
        }

        .cloud-tag {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 0.85rem;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .cloud-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: scale(1.05);
        }

        /* 服务能力卡片 */
        .services-section {
            background: var(--bg-white);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .service-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 50px;
            height: 50px;
            background: var(--gradient-rainbow);
            clip-path: polygon(100% 0, 100% 100%, 0 100%);
            opacity: 0.1;
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .service-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .service-list {
            list-style: none;
            margin-top: 15px;
        }

        .service-list li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .service-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: bold;
        }

        /* 一站式AIGC制作流程与标准化步骤 */
        .process-section {
            background: var(--bg-light);
        }

        .process-timeline {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

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

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-rainbow);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.25rem;
            margin: -55px auto 20px auto;
            border: 4px solid var(--bg-white);
            box-shadow: var(--shadow-sm);
        }

        .step-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        /* 全行业解决方案 */
        .solutions-section {
            background: var(--bg-white);
        }

        .solutions-tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 10px 20px;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }

        .tab-btn.active, .tab-btn:hover {
            background: var(--gradient-rainbow);
            color: white;
            border-color: transparent;
        }

        .solutions-content {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
        }

        .solution-pane {
            display: none;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .solution-pane.active {
            display: grid;
        }

        /* 案例中心 & 媒体展示 */
        .case-section {
            background: var(--bg-light);
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .case-img-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--border-color);
        }

        .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: 20px;
        }

        .case-tag {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
            display: inline-block;
        }

        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 对比评测 */
        .review-section {
            background: var(--bg-white);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--bg-white);
        }

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

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

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

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

        .comparison-table tr.highlight {
            background-color: rgba(79, 70, 229, 0.03);
        }

        .comp-tag {
            background: var(--gradient-rainbow);
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: bold;
        }

        /* Token 比价 */
        .token-section {
            background: var(--bg-light);
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

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

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

        .token-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin: 15px 0;
        }

        /* 技术培训 */
        .training-section {
            background: var(--bg-white);
        }

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

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

        .training-card:hover {
            background: var(--gradient-soft);
            transform: scale(1.03);
        }

        .training-badge {
            background: var(--border-color);
            color: var(--text-dark);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
            margin-bottom: 15px;
            display: inline-block;
        }

        /* 加盟代理 */
        .agent-section {
            background: var(--gradient-rainbow);
            color: white;
            text-align: center;
        }

        .agent-section .section-title {
            color: white;
        }

        .agent-section .section-desc {
            color: rgba(255,255,255,0.85);
        }

        .agent-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .agent-card {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
        }

        .agent-card:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-5px);
        }

        .agent-card h4 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            font-weight: 700;
        }

        /* 客户评论 */
        .reviews-section {
            background: var(--bg-white);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .review-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            position: relative;
        }

        .review-quote {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .user-avatar-placeholder {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--gradient-rainbow);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .user-info h5 {
            font-size: 1rem;
            font-weight: 700;
        }

        .user-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 帮助中心 (FAQ, 自助排查, 术语百科) */
        .help-section {
            background: var(--bg-light);
        }

        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

        .faq-trigger {
            width: 100%;
            background: none;
            border: none;
            padding: 20px;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .faq-item.active .faq-trigger::after {
            content: '-';
            transform: rotate(90deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background-color: #fafafa;
        }

        .faq-item.active .faq-content {
            max-height: 1000px;
            transition: max-height 0.5s ease-in-out;
        }

        .faq-inner {
            padding: 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        .troubleshoot-box {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 30px;
        }

        .troubleshoot-list {
            list-style: none;
            margin-top: 15px;
        }

        .troubleshoot-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }

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

        /* 需求匹配与联系我们表单 */
        .contact-section {
            background: var(--bg-white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

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

        .info-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .info-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
        }

        .info-card h4 {
            margin-bottom: 8px;
            font-weight: 700;
        }

        .qrcode-group {
            display: flex;
            gap: 30px;
            align-items: center;
            background: var(--gradient-soft);
            padding: 25px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .qrcode-group img {
            width: 120px;
            height: 120px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .qrcode-info h4 {
            margin-bottom: 5px;
            font-weight: 700;
        }

        .qrcode-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .contact-form-box {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }

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

        .form-label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 0.95rem;
            background-color: var(--bg-white);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
        }

        .btn-submit {
            width: 100%;
            background: var(--gradient-rainbow);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        /* 知识库与友情链接 */
        .kb-section {
            background: var(--bg-light);
        }

        .kb-grid {
            display: grid;
            grid-template-columns: 1.5fr 0.8fr;
            gap: 40px;
        }

        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .article-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            transition: var(--transition);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-item:hover {
            border-color: var(--primary-light);
            transform: translateX(5px);
        }

        .article-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-dark);
        }

        .friend-links {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .friend-links-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }

        .friend-links-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 15px;
        }

        .friend-links-wrapper a {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

        /* 页脚 */
        footer {
            background-color: var(--text-dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr repeat(3, 1fr);
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #334155;
        }

        .footer-logo-desc h3 {
            color: white;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .footer-logo-desc p {
            margin-bottom: 20px;
        }

        .footer-col h4 {
            color: white;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col a {
            color: #94a3b8;
        }

        .footer-col a:hover {
            color: white;
        }

        .footer-bottom {
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-bottom p {
            font-size: 0.8rem;
        }

        /* 浮动组件 */
        .floating-widget {
            position: fixed;
            right: 20px;
            bottom: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

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

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

        .qrcode-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 150px;
        }

        .qrcode-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 5px;
        }

        .qrcode-popover p {
            font-size: 0.75rem;
            color: var(--text-dark);
            font-weight: bold;
        }

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

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-grid, .about-grid, .solution-pane.active, .help-grid, .contact-grid, .kb-grid {
                grid-template-columns: 1fr;
            }

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

            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: var(--shadow-lg);
            }

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

            .hamburger {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .hero-btn-group {
                flex-direction: column;
            }

            .section-title {
                font-size: 1.8rem;
            }
        }