/* 变量及根设置 */
        :root {
            --primary: #6366f1;
            --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
            --primary-glow: rgba(99, 102, 241, 0.15);
            --dark-bg: #0b0f19;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --border-glow: linear-gradient(90deg, #6366f1, #ec4899);
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 15px -3px rgba(99, 102, 241, 0.1), 0 4px 6px -4px rgba(99, 102, 241, 0.1);
            --shadow-lg: 0 20px 25px -5px rgba(99, 102, 241, 0.15), 0 8px 10px -6px rgba(99, 102, 241, 0.15);
            --container-w: 1200px;
        }

        /* 基础重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--light-bg);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 外层容器 */
        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            align-items: center;
            transition: all 0.3s ease;
        }
        header.scrolled {
            box-shadow: var(--shadow-sm);
            height: 60px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .ai-page-logo {
            height: 40px;
            width: auto;
        }
        .brand-name {
            font-size: 20px;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }
        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-menu a:hover {
            color: var(--primary);
        }
        .nav-btn {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 13px !important;
            box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(99, 102, 241, 0.4);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            width: 25px;
            height: 2px;
            background-color: var(--text-main);
            transition: 0.3s;
        }

        /* 基础区块样式 */
        section {
            padding: 80px 0;
            position: relative;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-tag {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 12px;
            display: inline-block;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 12px auto 0;
        }

        /* 首屏 Hero - 无图科技感 */
        .hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(99, 102, 241, 0.05) 50%, rgba(248, 250, 252, 1) 100%);
            text-align: center;
        }
        .hero-badge {
            background: rgba(99, 102, 241, 0.08);
            border: 1px solid rgba(99, 102, 241, 0.15);
            padding: 6px 16px;
            border-radius: 30px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-block;
            margin-bottom: 24px;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        h1.hero-title {
            font-size: 42px;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -1px;
            max-width: 900px;
            margin: 0 auto 20px;
        }
        h1.hero-title span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 35px;
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }
        .btn {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 8px 20px rgba(168, 85, 247, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(168, 85, 247, 0.45);
        }
        .btn-secondary {
            background: #fff;
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }
        .btn-secondary:hover {
            background: #f8fafc;
            border-color: #cbd5e1;
        }
        .hero-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }
        .hero-feat-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            text-align: left;
            transition: transform 0.3s;
        }
        .hero-feat-card:hover {
            transform: translateY(-5px);
        }
        .hero-feat-card h3 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .hero-feat-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 数据指标 */
        .stats-bar {
            background: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 30px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            text-align: center;
            gap: 20px;
        }
        .stat-item h4 {
            font-size: 32px;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 4px;
        }
        .stat-item p {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 平台介绍 & 关于我们 */
        .about-section {
            background-color: #fff;
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .about-text h3 {
            font-size: 26px;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .about-text p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 24px;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .about-feat-item {
            background-color: var(--light-bg);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--primary);
        }
        .about-feat-item h5 {
            font-size: 15px;
            margin-bottom: 6px;
        }
        .about-feat-item p {
            font-size: 12px;
            margin: 0;
        }
        /* 关于我们第二块 - 宣传图展示 */
        .about-visual {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .about-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* 全平台AIGC服务 - 模型墙 & Token比价 */
        .service-section {
            background-color: var(--light-bg);
        }
        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        .model-tag {
            background: #fff;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
            transition: all 0.2s;
        }
        .model-tag:hover {
            color: #fff;
            background: var(--primary-gradient);
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 4px 10px rgba(168, 85, 247, 0.2);
        }
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            margin-top: 30px;
        }
        .token-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }
        .token-table th, .token-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .token-table th {
            background-color: #f8fafc;
            color: var(--text-main);
            font-weight: 700;
        }
        .token-table tr:last-child td {
            border-bottom: none;
        }
        .token-table tr:hover {
            background-color: #f8fafc;
        }

        /* 一站式AIGC制作 - 核心场景 */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }
        .scene-card {
            background: #fff;
            padding: 30px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .scene-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-gradient);
            opacity: 0;
            transition: opacity 0.3s;
        }
        .scene-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .scene-card:hover::before {
            opacity: 1;
        }
        .scene-icon {
            font-size: 36px;
            margin-bottom: 16px;
        }
        .scene-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .scene-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .scene-btn {
            font-size: 13px;
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 全行业解决方案 */
        .solution-section {
            background: #fff;
        }
        .sol-grid {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
        }
        .sol-nav {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sol-nav-btn {
            padding: 16px 20px;
            border-radius: var(--radius-md);
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            color: var(--text-main);
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: all 0.3s;
        }
        .sol-nav-btn.active, .sol-nav-btn:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 12px rgba(168, 85, 247, 0.2);
        }
        .sol-content {
            background: var(--light-bg);
            padding: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .sol-pane {
            display: none;
        }
        .sol-pane.active {
            display: block;
            animation: fadeIn 0.4s;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .sol-pane h4 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .sol-pane p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 24px;
        }
        .sol-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .sol-feat-tag {
            background: #fff;
            padding: 12px;
            border-radius: var(--radius-md);
            font-size: 13px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* 流程步骤 & 全国网络 */
        .network-section {
            background: linear-gradient(180deg, #fff 0%, var(--light-bg) 100%);
        }
        .timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 60px;
            position: relative;
        }
        .timeline::after {
            content: '';
            position: absolute;
            top: 25px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border-color);
            z-index: 1;
        }
        .timeline-step {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: var(--shadow-sm);
        }
        .timeline-step:hover .step-num {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
        }
        .step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 12px;
            color: var(--text-muted);
            padding: 0 10px;
        }

        .network-map {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .map-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }
        .map-item {
            padding: 16px;
            border-radius: var(--radius-md);
            background: var(--light-bg);
            border: 1px solid var(--border-color);
        }
        .map-item h5 {
            font-size: 14px;
            margin-bottom: 4px;
        }
        .map-item p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 客户案例中心 & 用户评论 */
        .case-section {
            background: #fff;
        }
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }
        .case-card {
            background: var(--light-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }
        .case-card:hover {
            transform: translateY(-5px);
        }
        .case-img-wrap {
            height: 180px;
            overflow: hidden;
            background-color: #eaeaea;
        }
        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-info {
            padding: 20px;
        }
        .case-tag {
            font-size: 11px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }
        .case-info h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .case-info p {
            font-size: 12px;
            color: var(--text-muted);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testi-card {
            background: #fff;
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .testi-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .user-info h5 {
            font-size: 14px;
            margin-bottom: 2px;
        }
        .user-info p {
            font-size: 11px;
            color: var(--text-muted);
        }
        .testi-text {
            font-size: 13px;
            color: var(--text-muted);
            font-style: italic;
        }

        /* 对比评测 - 突出优势 */
        .rating-banner {
            background: var(--primary-gradient);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }
        .rating-summary h3 {
            font-size: 24px;
            margin-bottom: 6px;
        }
        .rating-stars {
            font-size: 20px;
            color: #fbbf24;
        }
        .rating-number {
            font-size: 48px;
            font-weight: 900;
            line-height: 1;
        }
        .rating-number span {
            font-size: 20px;
            font-weight: 500;
        }
        .comp-table {
            width: 100%;
            background: #fff;
            border-radius: var(--radius-lg);
            border-collapse: collapse;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }
        .comp-table th, .comp-table td {
            padding: 16px 20px;
            text-align: center;
            font-size: 14px;
            border-bottom: 1px solid var(--border-color);
        }
        .comp-table th {
            background: #f8fafc;
            color: var(--text-main);
        }
        .comp-table td:first-child, .comp-table th:first-child {
            text-align: left;
            font-weight: 600;
        }
        .comp-highlight {
            background: rgba(99, 102, 241, 0.03);
            font-weight: 600;
            color: var(--primary);
        }

        /* 培训版块 */
        .train-section {
            background-color: var(--light-bg);
        }
        .train-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .train-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: all 0.3s;
        }
        .train-card:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-md);
        }
        .train-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(168, 85, 247, 0.1);
            color: #a855f7;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 16px;
        }
        .train-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .train-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 帮助中心 & FAQ */
        .faq-section {
            background: #fff;
        }
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--light-bg);
        }
        .faq-q {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background 0.3s;
        }
        .faq-q:hover {
            background: #f1f5f9;
        }
        .faq-q::after {
            content: '+';
            font-size: 18px;
            font-weight: 400;
            transition: transform 0.3s;
        }
        .faq-item.active .faq-q::after {
            content: '−';
        }
        .faq-a {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            font-size: 13px;
            color: var(--text-muted);
            transition: all 0.3s ease-out;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            padding: 16px 20px;
            max-height: 200px;
            border-top: 1px solid var(--border-color);
            background: #fff;
        }

        /* 自助排查与术语百科 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 40px;
        }
        .trouble-card {
            background: var(--light-bg);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .trouble-card h4 {
            font-size: 16px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .trouble-list {
            list-style: none;
        }
        .trouble-list li {
            font-size: 13px;
            padding-bottom: 10px;
            margin-bottom: 10px;
            border-bottom: 1px dashed var(--border-color);
            color: var(--text-muted);
        }
        .trouble-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
            margin-bottom: 0;
        }

        /* 资讯与知识库 */
        .news-section {
            background-color: var(--light-bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .news-body {
            padding: 20px;
        }
        .news-date {
            font-size: 11px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: block;
        }
        .news-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
            text-decoration: none;
            display: block;
            line-height: 1.4;
        }
        .news-title:hover {
            color: var(--primary);
        }
        .news-summary {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .news-link {
            font-size: 12px;
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
        }

        /* 联系我们 & 表单 & 加盟代理 */
        .contact-section {
            background: #fff;
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }
        .contact-info-panel {
            background: var(--light-bg);
            padding: 40px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .contact-info-panel h3 {
            font-size: 22px;
            margin-bottom: 24px;
        }
        .contact-method {
            margin-bottom: 20px;
        }
        .contact-method h4 {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .contact-method p {
            font-size: 16px;
            font-weight: 600;
        }
        .qr-codes {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }
        .qr-item {
            text-align: center;
        }
        .qr-item img {
            max-width: 120px;
            width: 100%;
            height: auto;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            padding: 4px;
            background: #fff;
        }
        .qr-item p {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* 表单样式 */
        .contact-form-panel {
            background: #fff;
            padding: 40px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-main);
            outline: none;
            transition: border 0.3s;
        }
        .form-control:focus {
            border-color: var(--primary);
        }
        .form-select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-main);
            background-color: #fff;
        }
        .btn-submit {
            width: 100%;
            border: none;
            padding: 14px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark-bg);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 13px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer-links h5 {
            color: #fff;
            font-size: 14px;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .friendship-links {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .friendship-links span {
            font-weight: 600;
            color: #cbd5e1;
        }
        .friendship-links a {
            color: #64748b;
            text-decoration: none;
            transition: color 0.2s;
            font-size: 12px;
        }
        .friendship-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .float-item {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #fff;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            color: var(--text-main);
            transition: all 0.3s;
            position: relative;
        }
        .float-item:hover {
            background: var(--primary-gradient);
            color: #fff;
            transform: scale(1.05);
        }
        .float-item svg {
            width: 22px;
            height: 22px;
            fill: currentColor;
        }
        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 8px;
            box-shadow: var(--shadow-md);
            width: 140px;
            text-align: center;
            display: none;
            animation: fadeIn 0.2s;
        }
        .float-item .popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }
        .float-item .popover p {
            color: var(--text-main);
            font-size: 11px;
            margin-top: 6px;
        }
        .float-item:hover .popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .sol-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .case-grid, .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .timeline::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            h1.hero-title {
                font-size: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid, .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .about-features {
                grid-template-columns: 1fr;
            }
            .troubleshoot-grid {
                grid-template-columns: 1fr;
            }
        }