:root {
            --primary: #7c3aed;
            --primary-light: #c084fc;
            --primary-dark: #5b21b6;
            --accent: #ec4899;
            --bg-base: #f9f8fc;
            --bg-card: #ffffff;
            --text-main: #1f1a28;
            --text-muted: #5c5566;
            --border-color: #e8e3f2;
            --shadow-sm: 0 2px 8px rgba(124, 58, 237, 0.05);
            --shadow-md: 0 8px 24px rgba(124, 58, 237, 0.08);
            --shadow-lg: 0 16px 36px rgba(124, 58, 237, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --container-width: 1200px;
        }

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

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

        body {
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            text-decoration: none;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(124, 58, 237, 0.25);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            transition: all 0.3s ease;
        }

        /* Hero 首屏（亮紫绚烂风，无图） */
        .hero-section {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(192, 132, 252, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 40%),
                        var(--bg-base);
            position: relative;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(124, 58, 237, 0.08);
            border: 1px solid rgba(124, 58, 237, 0.2);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        h1.hero-title {
            font-size: clamp(32px, 5vw, 54px);
            line-height: 1.2;
            font-weight: 800;
            background: linear-gradient(135deg, #2e0854 0%, var(--primary) 50%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 24px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-desc {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 40px;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            box-shadow: 0 10px 24px rgba(124, 58, 237, 0.3);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 30px rgba(124, 58, 237, 0.4);
        }

        .btn-secondary {
            background: #ffffff;
            border: 2px solid var(--border-color);
            color: var(--text-main);
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .btn-secondary:hover {
            background: var(--bg-base);
            border-color: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* 模块统一样式 */
        section {
            padding: 100px 0;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-card);
        }

        section:nth-of-type(even) {
            background-color: var(--bg-base);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-tag {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .section-intro {
            color: var(--text-muted);
            font-size: 16px;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 32px 24px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 关于我们 */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary-dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
            line-height: 1.8;
        }

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

        .about-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent);
            font-weight: 800;
        }

        .about-visual {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.05), rgba(236, 72, 153, 0.05));
            border: 2px dashed var(--primary-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
        }

        .about-badge-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .about-badge-item {
            background: var(--bg-card);
            padding: 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .about-badge-item h4 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .about-badge-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* 平台服务 & 一站式制作 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            background: rgba(124, 58, 237, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 16px;
        }

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

        .service-tag-item {
            background: var(--bg-base);
            font-size: 12px;
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 标签云展示 (支持的模型) */
        .cloud-container {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-top: 50px;
            box-shadow: var(--shadow-sm);
        }

        .cloud-title {
            text-align: center;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text-main);
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .cloud-tag {
            background: rgba(124, 58, 237, 0.05);
            border: 1px solid rgba(124, 58, 237, 0.1);
            color: var(--text-main);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
        }

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

        /* 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

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

        .solution-body {
            padding: 30px;
        }

        .solution-body h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .solution-body p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

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

        .solution-features li {
            font-size: 13px;
            color: var(--text-main);
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
        }

        .solution-features li::before {
            content: "✦";
            position: absolute;
            left: 0;
            color: var(--accent);
        }

        /* 服务网络 & 步骤 */
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .map-mock {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.02) 0%, rgba(236, 72, 153, 0.02) 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 40px;
            text-align: center;
        }

        .map-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .map-node {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .map-node span {
            display: block;
            font-size: 11px;
            color: var(--accent);
            margin-top: 4px;
        }

        /* 流程与标准 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            position: relative;
        }

        .step-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: var(--radius-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* 技术标准 */
        .standards-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 40px;
        }

        .standard-item {
            background: var(--bg-card);
            border-left: 4px solid var(--primary);
            padding: 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            box-shadow: var(--shadow-sm);
        }

        .standard-item h4 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--text-main);
        }

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

        /* 客户案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-5px);
        }

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

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

        .case-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #ffffff;
            padding: 4px 10px;
            font-size: 12px;
            border-radius: 4px;
            font-weight: 600;
        }

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 18px;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .case-info p {
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 16px;
        }

        .case-stats {
            display: flex;
            gap: 16px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
        }

        /* 对比评测 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .comparison-table th {
            background-color: rgba(124, 58, 237, 0.02);
            font-weight: 700;
            color: var(--text-main);
        }

        .comparison-table td strong {
            color: var(--primary-dark);
        }

        .comparison-summary {
            margin-top: 30px;
            background: rgba(124, 58, 237, 0.03);
            border: 1px solid rgba(124, 58, 237, 0.1);
            padding: 24px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

        .summary-rating {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .rating-stars {
            color: #fbbf24;
            font-size: 20px;
        }

        .rating-score {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
        }

        /* Token比价 & 智能需求 */
        .pricing-section {
            background-color: var(--bg-base);
        }

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

        .price-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .price-card.featured::before {
            content: "超值推荐";
            position: absolute;
            top: 15px;
            right: -30px;
            background: var(--accent);
            color: #ffffff;
            font-size: 11px;
            font-weight: 700;
            padding: 4px 30px;
            transform: rotate(45deg);
        }

        .price-model-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .price-value {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 16px;
        }

        .price-value span {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
        }

        .price-features {
            list-style: none;
            margin-bottom: 24px;
            text-align: left;
        }

        .price-features li {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
        }

        .price-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
        }

        /* 职业培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
        }

        .training-tag {
            background: rgba(124, 58, 237, 0.08);
            color: var(--primary-dark);
            font-size: 11px;
            padding: 4px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .training-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 & 术语百科 */
        .faq-glossary-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 50px;
        }

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: rgba(124, 58, 237, 0.02);
        }

        .faq-icon-indicator {
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(124, 58, 237, 0.01);
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            line-height: 1.7;
        }

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

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* 术语百科 & 自助排查 */
        .sidebar-widget {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }

        .widget-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 8px;
        }

        .glossary-list {
            list-style: none;
        }

        .glossary-item {
            margin-bottom: 16px;
        }

        .glossary-term {
            font-weight: 700;
            font-size: 14px;
            color: var(--primary-dark);
            margin-bottom: 4px;
        }

        .glossary-def {
            font-size: 12px;
            color: var(--text-muted);
        }

        .troubleshoot-list {
            list-style: none;
        }

        .troubleshoot-item {
            position: relative;
            padding-left: 20px;
            font-size: 13px;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .troubleshoot-item::before {
            content: "!";
            position: absolute;
            left: 0;
            top: 2px;
            width: 14px;
            height: 14px;
            background: var(--accent);
            color: #ffffff;
            border-radius: 50%;
            font-size: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .comment-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-sm);
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.7;
            position: relative;
        }

        .comment-text::before {
            content: "“";
            font-size: 40px;
            color: rgba(124, 58, 237, 0.1);
            position: absolute;
            top: -20px;
            left: -10px;
        }

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

        .user-avatar-placeholder {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
            font-size: 16px;
        }

        .user-info h5 {
            font-size: 14px;
            font-weight: 700;
            margin: 0;
        }

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

        /* 行业资讯 / 知识库 */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

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

        .article-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .article-card h4 a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .article-card h4 a:hover {
            color: var(--primary);
        }

        .article-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }

        /* 联系我们 & 加盟代理表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .contact-info-area {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

        .contact-item-row {
            margin-bottom: 24px;
        }

        .contact-item-row h4 {
            font-size: 16px;
            margin-bottom: 6px;
            color: var(--primary-dark);
        }

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

        .contact-visuals {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .qr-card {
            background: var(--bg-base);
            padding: 16px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-color);
            max-width: 160px;
        }

        .qr-card img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .qr-card span {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-area {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-main);
            background-color: var(--bg-base);
            transition: border-color 0.2s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            border: none;
            padding: 14px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
            transition: all 0.3s ease;
        }

        .btn-submit:hover {
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.3);
            transform: translateY(-2px);
        }

        /* 友情链接与底部 */
        footer {
            background-color: #110922;
            color: #a89bb8;
            padding: 80px 0 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }

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

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

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

        .footer-links ul li a {
            color: #a89bb8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .footer-links ul li a:hover {
            color: #ffffff;
        }

        .friendly-links-section {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 30px;
            margin-top: 30px;
        }

        .friendly-links-title {
            font-size: 14px;
            color: #ffffff;
            margin-bottom: 12px;
        }

        .friendly-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
        }

        .friendly-links-container a {
            color: #a89bb8;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .friendly-links-container a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

        .ai-page-home-link {
            color: #a89bb8;
            text-decoration: none;
        }

        .ai-page-home-link:hover {
            color: #ffffff;
        }

        /* 悬浮客服 */
        .floating-contact {
            position: fixed;
            bottom: 40px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border-radius: 50%;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            cursor: pointer;
            position: relative;
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
        }

        .float-item:hover {
            background: var(--primary);
            color: #ffffff;
            transform: scale(1.1);
        }

        .float-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 16px;
            box-shadow: var(--shadow-lg);
            display: none;
            flex-direction: column;
            align-items: center;
            width: 160px;
        }

        .float-popover img {
            width: 120px;
            height: 120px;
            border-radius: 4px;
            margin-bottom: 8px;
        }

        .float-popover span {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 600;
        }

        .float-item:hover .float-popover {
            display: flex;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .about-layout, .network-layout, .standards-grid, .faq-glossary-layout, .contact-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }