:root {
            --primary: #7f00ff;
            --secondary: #ff007f;
            --dark: #0b0c10;
            --dark-card: #15161e;
            --light: #f8f9fa;
            --text-dark: #1f2937;
            --text-light: #f3f4f6;
            --accent: #00ffcc;
            --gray: #6b7280;
            --border-color: rgba(255, 255, 255, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        /* 艳色潮流风：暗黑基底与高饱和霓虹渐变的视觉框架 */
        .theme-dark-wrap {
            background-color: var(--dark);
            color: var(--text-light);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 12, 16, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .ai-page-logo {
            height: 40px;
            width: auto;
            filter: drop-shadow(0 0 8px var(--accent));
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            opacity: 0.8;
        }

        .nav-links a:hover {
            color: var(--accent);
            opacity: 1;
        }

        .btn-nav-action {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 0, 127, 0.3);
        }

        .btn-nav-action:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(255, 0, 127, 0.5);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Hero首屏 (杜绝任何图片，完全使用纯色/渐变/几何块/CSS动效) */
        .hero-section {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(127, 0, 255, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(0, 255, 204, 0.1) 0%, transparent 50%),
                        var(--dark);
            position: relative;
            overflow: hidden;
            border-bottom: 2px solid rgba(255, 0, 127, 0.2);
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content {
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 255, 204, 0.1);
            border: 1px solid var(--accent);
            color: var(--accent);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 24px;
            color: #fff;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--accent) 30%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 600px;
        }

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

        .btn-main {
            background: linear-gradient(135deg, var(--accent), var(--primary));
            color: var(--dark);
            text-decoration: none;
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            box-shadow: 0 8px 30px rgba(0, 255, 204, 0.3);
            transition: var(--transition);
            display: inline-block;
            border: none;
            cursor: pointer;
        }

        .btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 255, 204, 0.5);
            color: #fff;
        }

        .btn-sub {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
            text-decoration: none;
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: inline-block;
        }

        .btn-sub:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--accent);
        }

        .hero-visual {
            position: relative;
            height: 400px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* CSS 潮流几何发光卡片代替图片 */
        .neon-card {
            width: 320px;
            height: 320px;
            background: linear-gradient(135deg, rgba(127, 0, 255, 0.2), rgba(255, 0, 127, 0.2));
            border: 2px solid var(--primary);
            border-radius: 24px;
            position: relative;
            box-shadow: 0 0 50px rgba(127, 0, 255, 0.3);
            animation: pulseCard 6s infinite alternate;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 24px;
            text-align: center;
        }

        .neon-card-info {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .neon-card-label {
            font-size: 1rem;
            color: var(--text-light);
            letter-spacing: 2px;
        }

        @keyframes pulseCard {
            0% { transform: translateY(0) rotate(0deg); box-shadow: 0 0 30px rgba(127, 0, 255, 0.2); }
            100% { transform: translateY(-15px) rotate(3deg); box-shadow: 0 0 60px rgba(255, 0, 127, 0.4); }
        }

        /* Section Global Settings */
        section {
            padding: 100px 0;
            position: relative;
        }

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            border-radius: 2px;
        }

        .section-subtitle {
            color: var(--gray);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }

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

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

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

        .about-content p {
            color: var(--gray);
            margin-bottom: 24px;
            font-size: 1.05rem;
        }

        /* 3. 全平台AIGC服务体系 & 数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.05);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--gray);
        }

        /* Service Cards */
        .services-section {
            background-color: var(--dark);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(127, 0, 255, 0.2);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 24px;
            display: inline-block;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .service-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .service-card p {
            color: var(--gray);
            font-size: 0.95rem;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .service-tag {
            font-size: 0.75rem;
            padding: 4px 10px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 4px;
            color: var(--accent);
        }

        /* 4. 全自动AIGC制作流程 (一键PPT详解) */
        .process-section {
            background-color: var(--dark-card);
        }

        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            background: var(--dark);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 16px;
            position: relative;
            transition: var(--transition);
        }

        .process-step:hover {
            border-color: var(--secondary);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 20px;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 4px 10px rgba(255, 0, 127, 0.3);
        }

        .process-step h3 {
            margin-top: 12px;
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: #fff;
        }

        .process-step p {
            font-size: 0.9rem;
            color: var(--gray);
        }

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

        .solutions-tabs {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .solution-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            text-align: center;
            transition: var(--transition);
        }

        .solution-card:hover {
            border-color: var(--accent);
            box-shadow: 0 10px 30px rgba(0, 255, 204, 0.1);
        }

        .solution-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent);
        }

        .solution-list {
            list-style: none;
            text-align: left;
            margin: 20px 0;
            color: var(--gray);
            font-size: 0.95rem;
        }

        .solution-list li {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-list li::before {
            content: '✔';
            color: var(--secondary);
            font-weight: bold;
        }

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

        .network-box {
            background: var(--dark);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .network-item {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 8px;
            text-align: center;
        }

        .network-item h4 {
            color: var(--accent);
            margin-bottom: 6px;
        }

        .network-item p {
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* 7. 标准化服务全流程 & 8. 技术标准 */
        .standards-section {
            background-color: var(--dark);
        }

        .standards-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
        }

        .flow-timeline {
            position: relative;
            border-left: 2px solid var(--primary);
            padding-left: 32px;
            margin-left: 20px;
        }

        .flow-node {
            position: relative;
            margin-bottom: 40px;
        }

        .flow-node::before {
            content: '';
            position: absolute;
            left: -42px;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent);
        }

        .flow-node h4 {
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .flow-node p {
            color: var(--gray);
            font-size: 0.9rem;
        }

        /* 9. 客户案例中心 & 宣传图片展示 */
        .cases-section {
            background-color: var(--dark-card);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--dark);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: scale(1.02);
            border-color: var(--accent);
        }

        .case-img-container {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #222;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .case-info p {
            color: var(--gray);
            font-size: 0.9rem;
        }

        /* 10. 对比评测 (极客潮流风对比卡片) */
        .rating-section {
            background: linear-gradient(135deg, rgba(127, 0, 255, 0.1), rgba(255, 0, 127, 0.1)), var(--dark);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .rating-box {
            background: rgba(255, 255, 255, 0.02);
            border: 2px solid var(--secondary);
            border-radius: 24px;
            padding: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .rating-score-area {
            text-align: center;
            border-right: 1px solid var(--border-color);
            padding-right: 48px;
        }

        .rating-stars {
            color: #ffcc00;
            font-size: 2.2rem;
            margin-bottom: 12px;
        }

        .rating-score {
            font-size: 4.5rem;
            font-weight: 900;
            color: #fff;
            line-height: 1;
        }

        .rating-max {
            font-size: 1.2rem;
            color: var(--gray);
        }

        .rating-table-wrapper {
            flex-grow: 1;
            overflow-x: auto;
        }

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

        .rating-table th, .rating-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-color);
        }

        .rating-table th {
            color: var(--accent);
            font-weight: 700;
        }

        .rating-table td strong {
            color: var(--secondary);
        }

        /* 11. 智能需求匹配 (表单系统) */
        .matcher-section {
            background-color: var(--dark-card);
        }

        .matcher-container {
            max-width: 800px;
            margin: 0 auto;
            background: var(--dark);
            border: 1px solid var(--border-color);
            padding: 48px;
            border-radius: 20px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.3);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 24px;
        }

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

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

        .form-group label {
            font-size: 0.9rem;
            color: var(--text-light);
            font-weight: 600;
        }

        .form-group input, .form-group select, .form-group textarea {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            padding: 12px 16px;
            color: #fff;
            border-radius: 8px;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: #fff;
            border: none;
            padding: 16px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 0, 127, 0.3);
            transition: var(--transition);
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 0, 127, 0.5);
        }

        /* 12. Token比价参考 */
        .token-section {
            background-color: var(--dark);
        }

        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .price-card.popular {
            border-color: var(--accent);
        }

        .price-badge {
            position: absolute;
            top: 15px;
            right: -30px;
            background: var(--accent);
            color: var(--dark);
            font-size: 0.75rem;
            font-weight: 800;
            padding: 4px 30px;
            transform: rotate(45deg);
        }

        .price-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .price-val {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--secondary);
            margin-bottom: 24px;
        }

        .price-val span {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: normal;
        }

        .price-features {
            list-style: none;
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 30px;
            text-align: left;
        }

        .price-features li {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .price-features li::before {
            content: '✦';
            color: var(--accent);
        }

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

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

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

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

        .training-icon {
            font-size: 2rem;
            margin-bottom: 16px;
        }

        .training-card h4 {
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* 15. 帮助中心 & 16. FAQ & 17. 故障排查 & 18. 术语百科 */
        .help-section {
            background-color: var(--dark);
        }

        .help-container {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 48px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-header {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: #fff;
        }

        .faq-header::after {
            content: '+';
            font-size: 1.4rem;
            color: var(--accent);
            transition: var(--transition);
        }

        .faq-item.active .faq-header::after {
            transform: rotate(45deg);
            color: var(--secondary);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 20px;
            color: var(--gray);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-body {
            max-height: 200px;
            padding-bottom: 20px;
        }

        .sidebar-help {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-box {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
        }

        .sidebar-box h4 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            color: var(--accent);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 10px;
        }

        .trouble-list, .terms-list {
            list-style: none;
            font-size: 0.9rem;
            color: var(--gray);
        }

        .trouble-list li, .terms-list li {
            margin-bottom: 12px;
        }

        .trouble-list strong, .terms-list strong {
            color: var(--text-light);
        }

        /* 19. 行业资讯 / 知识库 */
        .blog-section {
            background-color: var(--dark-card);
        }

        .blog-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .blog-date {
            font-size: 0.8rem;
            color: var(--accent);
            margin-bottom: 8px;
            display: block;
        }

        .blog-card h4 {
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .blog-card p {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .blog-link {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 6条用户评论 */
        .reviews-section {
            background-color: var(--dark);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: var(--dark-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 32px;
            position: relative;
        }

        .review-quote {
            font-size: 1.8rem;
            color: var(--secondary);
            position: absolute;
            top: 20px;
            left: 20px;
            line-height: 1;
            opacity: 0.2;
        }

        .review-text {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
        }

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

        .user-avatar-placeholder {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--dark);
        }

        .user-meta h5 {
            color: #fff;
            font-size: 0.95rem;
        }

        .user-meta span {
            color: var(--gray);
            font-size: 0.8rem;
        }

        /* 20. 联系我们 & 页脚 (含微信客服、友情链接) */
        footer {
            background-color: var(--dark-card);
            border-top: 1px solid var(--border-color);
            padding: 80px 0 30px;
            color: var(--gray);
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1.8fr;
            gap: 48px;
            margin-bottom: 60px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .footer-brand p {
            max-width: 320px;
        }

        .footer-contacts {
            display: flex;
            flex-direction: column;
            gap: 12px;
            color: var(--text-light);
        }

        .footer-links-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .footer-links-col h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
            position: relative;
        }

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

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

        .footer-links-col ul li a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .qrcode-wrapper {
            background: var(--dark);
            padding: 12px;
            border-radius: 8px;
            display: inline-block;
            border: 1px solid var(--border-color);
            max-width: 140px;
        }

        .qrcode-wrapper img {
            width: 100%;
            height: auto;
            display: block;
        }

        .friend-links-area {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            margin-top: 30px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            text-align: center;
            font-size: 0.8rem;
        }

        /* 浮动客服入口 */
        .float-contact {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(255, 0, 127, 0.4);
            color: #fff;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

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

        .float-popover {
            position: absolute;
            bottom: 70px;
            right: 0;
            background: var(--dark-card);
            border: 1px solid var(--accent);
            border-radius: 12px;
            padding: 16px;
            width: 200px;
            display: none;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }

        .float-popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .float-popover p {
            font-size: 0.8rem;
            color: var(--text-light);
        }

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

        /* Responsive Design */
        @media (max-width: 992px) {
            .hero-inner {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-desc {
                margin: 0 auto 40px;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-visual {
                height: 300px;
            }
            .about-grid, .network-box, .standards-grid, .rating-box, .help-container, .footer-grid {
                grid-template-columns: 1fr;
            }
            .rating-score-area {
                border-right: none;
                border-bottom: 1px solid var(--border-color);
                padding-right: 0;
                padding-bottom: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-flow {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background: var(--dark-card);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .cases-grid, .price-grid, .reviews-grid, .blog-grid {
                grid-template-columns: 1fr;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .process-flow {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }