/* CSS Reset & Variables */
        :root {
            --primary: #2563eb;       /* 科技明艳蓝 */
            --secondary: #ff5722;     /* 亮眼活力橙 */
            --accent: #9c27b0;        /* 创意极客紫 */
            --bg-light: #f8fafc;      /* 纯净底色 */
            --bg-card: #ffffff;       /* 卡片底色 */
            --text-main: #0f172a;     /* 深色主文案 */
            --text-muted: #475569;    /* 次级文字 */
            --border-color: #e2e8f0;  /* 边框线 */
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 10px 25px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* Common Container */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* General Typography */
        h1, h2, h3, h4 {
            font-weight: 800;
            line-height: 1.3;
        }

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

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 700;
            color: var(--white);
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            border-radius: 30px;
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #fff;
        }

        .section-title {
            font-size: 36px;
            color: var(--text-main);
            position: relative;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            margin-top: 12px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Buttons & Badges */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 8px;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
            background-color: #1d4ed8;
        }

        .btn-secondary {
            background-color: var(--secondary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(255, 87, 34, 0.4);
        }

        .btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 87, 34, 0.6);
            background-color: #e64a19;
        }

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

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

        /* Header Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-sm);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

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

        .ai-page-logo {
            height: 48px;
            width: auto;
        }

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

        nav ul li a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        nav ul li a:hover {
            color: var(--primary);
        }

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

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

        .nav-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 3px;
            transition: var(--transition);
        }

        /* Main Sections Layout */
        section {
            padding: 100px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* 1. Hero首屏 - 严禁出现图片 */
        #hero {
            background: radial-gradient(circle at 10% 20%, rgba(248, 250, 252, 1) 0%, rgba(226, 232, 240, 0.7) 100%);
            padding-top: 180px;
            padding-bottom: 120px;
            position: relative;
            overflow: hidden;
        }

        #hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(156,39,176,0.1) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 1;
        }

        #hero::after {
            content: '';
            position: absolute;
            bottom: -10%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #ff5722;
            color: #ffffff;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 30px;
            box-shadow: 0 4px 10px rgba(255,87,34,0.3);
        }

        .hero-title {
            font-size: 46px;
            font-weight: 900;
            color: var(--text-main);
            margin-bottom: 25px;
            letter-spacing: -1px;
        }

        .hero-title span {
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 20px;
            color: var(--text-muted);
            margin-bottom: 40px;
            line-height: 1.8;
        }

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

        /* 2. 关于我们 */
        #about {
            background-color: var(--bg-card);
        }

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

        .about-text h3 {
            font-size: 28px;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .about-text p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feat-item {
            background-color: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--accent);
        }

        .about-feat-item h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .about-feat-item p {
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.4;
        }

        .about-highlight-box {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
        }

        .about-highlight-box h3 {
            color: #ffffff;
            font-size: 26px;
            margin-bottom: 20px;
        }

        .about-highlight-box p {
            color: rgba(255,255,255,0.9);
            font-size: 15px;
            line-height: 1.7;
        }

        /* 3. 全平台AIGC服务体系 & 核心卖点 */
        #platform-service {
            background-color: var(--bg-light);
        }

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

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

        .platform-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .platform-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .platform-card-icon {
            font-size: 32px;
            margin-bottom: 20px;
        }

        .platform-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .platform-card p {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 4. 全自动AIGC制作流程 */
        #process-flow {
            background-color: var(--bg-card);
        }

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

        .flow-timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 4px;
            background-color: var(--border-color);
            transform: translateX(-50%);
        }

        .flow-step {
            position: relative;
            margin-bottom: 50px;
            width: 50%;
            padding: 0 40px;
        }

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

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

        .flow-badge {
            position: absolute;
            top: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--secondary);
            color: #ffffff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
        }

        .flow-step:nth-child(odd) .flow-badge {
            right: -20px;
        }

        .flow-step:nth-child(even) .flow-badge {
            left: -20px;
        }

        .flow-card {
            background-color: var(--bg-light);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .flow-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .flow-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 5. 全行业解决方案 */
        #solutions {
            background-color: var(--bg-light);
        }

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

        .sol-btn {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .sol-btn.active, .sol-btn:hover {
            background-color: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

        .solution-content {
            background-color: var(--bg-card);
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .sol-text h3 {
            font-size: 26px;
            margin-bottom: 15px;
        }

        .sol-text p {
            color: var(--text-muted);
            margin-bottom: 25px;
        }

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

        .sol-features li {
            margin-bottom: 12px;
            position: relative;
            padding-left: 25px;
            font-weight: 600;
        }

        .sol-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: 900;
        }

        .sol-visual-placeholder {
            background: linear-gradient(135deg, rgba(37,99,235,0.05), rgba(156,39,176,0.05));
            border: 2px dashed var(--accent);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
            font-weight: 700;
            color: var(--accent);
        }

        /* 6. 全国服务网络 */
        #service-network {
            background-color: var(--bg-card);
        }

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

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

        .network-card {
            background-color: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .network-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .network-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .network-map-placeholder {
            background: radial-gradient(var(--bg-light) 60%, var(--border-color));
            border-radius: 12px;
            padding: 50px;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .network-map-placeholder h3 {
            color: var(--primary);
            margin-bottom: 15px;
        }

        /* 7. 标准化服务全流程 */
        #standard-flow {
            background-color: var(--bg-light);
        }

        .standard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .standard-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
            position: relative;
        }

        .standard-card-num {
            font-size: 32px;
            font-weight: 900;
            color: rgba(37, 99, 235, 0.15);
            margin-bottom: 10px;
        }

        /* 8. 技术标准 */
        #tech-standards {
            background-color: var(--bg-card);
        }

        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .tech-card {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            transition: var(--transition);
        }

        .tech-card:hover {
            transform: scale(1.03);
            border-color: var(--accent);
        }

        .tech-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .tech-card p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 9. 客户案例中心 */
        #case-center {
            background-color: var(--bg-light);
        }

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

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

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #f1f5f9;
            position: relative;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-body {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 700;
            background-color: rgba(156, 39, 176, 0.1);
            color: var(--accent);
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .case-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 10. 对比评测 - 突出9.9分 */
        #comparison {
            background-color: var(--bg-card);
        }

        .rating-hero {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 30px;
            background: linear-gradient(135deg, #1e293b, #0f172a);
            color: #ffffff;
            padding: 40px;
            border-radius: 16px;
            margin-bottom: 50px;
            box-shadow: var(--shadow-md);
            flex-wrap: wrap;
            text-align: center;
        }

        .rating-num {
            font-size: 72px;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1;
        }

        .rating-stars {
            font-size: 32px;
            color: #ffb703;
        }

        .rating-text h3 {
            font-size: 24px;
            margin-bottom: 8px;
            color: #ffffff;
        }

        .rating-text p {
            color: rgba(255,255,255,0.7);
        }

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

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background-color: var(--bg-card);
            min-width: 700px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
        }

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

        .comparison-table tr:hover {
            background-color: rgba(37,99,235,0.02);
        }

        .table-highlight {
            background-color: rgba(37,99,235,0.05);
            font-weight: 700;
            color: var(--primary);
        }

        /* 11. 智能需求匹配 (表单区) */
        #match-form-section {
            background-color: var(--bg-light);
        }

        .form-container {
            max-width: 700px;
            margin: 0 auto;
            background-color: var(--bg-card);
            padding: 40px;
            border-radius: 16px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

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

        .form-group label {
            display: block;
            font-weight: 700;
            margin-bottom: 8px;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
        }

        /* 12. Token比价参考 */
        #token-pricing {
            background-color: var(--bg-card);
        }

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

        .pricing-card {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            transition: var(--transition);
        }

        .pricing-card.popular {
            border-color: var(--primary);
            background-color: var(--bg-card);
            box-shadow: var(--shadow-md);
            transform: scale(1.05);
        }

        .pricing-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
        }

        .pricing-price {
            font-size: 32px;
            font-weight: 900;
            color: var(--secondary);
            margin-bottom: 20px;
        }

        .pricing-features {
            list-style: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .pricing-features li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 13 & 14. 职业技术培训 & 人工智能培训 */
        #training {
            background-color: var(--bg-light);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 20px;
        }

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

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

        .training-card h3 {
            font-size: 18px;
            color: var(--text-main);
            margin-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
            display: inline-block;
        }

        .training-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 10px;
        }

        /* 15. 帮助中心 */
        #help-center {
            background-color: var(--bg-card);
        }

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

        .help-box {
            background-color: var(--bg-light);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
        }

        /* 16. 常见用户问题 FAQ */
        #faq {
            background-color: var(--bg-light);
        }

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

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

        .faq-question {
            padding: 20px 24px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 22px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: rgba(248, 250, 252, 0.5);
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            line-height: 1.8;
        }

        /* 17. 常见问题自助排查 */
        #troubleshooting {
            background-color: var(--bg-card);
        }

        .trouble-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .trouble-step-card {
            background-color: var(--bg-light);
            border-radius: 8px;
            padding: 24px;
            position: relative;
        }

        .trouble-step-card h4 {
            margin-bottom: 10px;
            color: var(--secondary);
        }

        /* 18. 网站术语百科 */
        #encyclopedia {
            background-color: var(--bg-light);
        }

        .encyclopedia-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

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

        .encyclopedia-card h4 {
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* 19. 行业资讯 / 知识库 */
        #knowledge-base {
            background-color: var(--bg-card);
        }

        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }

        .article-card {
            background-color: var(--bg-light);
            border-radius: 8px;
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .article-card h3 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .article-card a {
            color: var(--text-main);
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 20. 联系我们 */
        #contact {
            background-color: var(--bg-light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

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

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

        .contact-item {
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
        }

        .contact-item span {
            font-size: 14px;
            color: var(--text-muted);
        }

        .contact-item strong {
            font-size: 18px;
            color: var(--text-main);
            margin-top: 4px;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

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

        .qr-card img {
            max-width: 140px;
            height: auto;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        /* 客户评论卡片 */
        #testimonials {
            background-color: var(--bg-card);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

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

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 20px;
        }

        .user-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .user-meta h4 {
            font-size: 15px;
        }

        .user-meta span {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Footer */
        footer {
            background-color: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px 0;
            border-top: 2px solid var(--secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

        .footer-links ul li {
            margin-bottom: 10px;
        }

        .footer-links ul li a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .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: 14px;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* Floating Panel */
        .floating-panel {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        .float-btn-wechat:hover .float-qr-popover {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .float-qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--bg-card);
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: var(--transition);
            width: 170px;
            text-align: center;
        }

        .float-qr-popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 5px;
        }

        .float-qr-popover span {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 700;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .about-grid, .network-grid, .contact-grid, .solution-content {
                grid-template-columns: 1fr;
            }
            .flow-timeline::before {
                left: 20px;
            }
            .flow-step {
                width: 100%;
                left: 0 !important;
                text-align: left !important;
                padding-left: 50px;
                padding-right: 0;
            }
            .flow-badge {
                left: 0 !important;
            }
            .standard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .help-grid, .trouble-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background-color: var(--bg-card);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                box-shadow: var(--shadow-md);
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 15px;
            }
            .nav-toggle {
                display: flex;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .standard-grid {
                grid-template-columns: 1fr;
            }
        }