/* 根变量及活力亮彩渐变风配色 */
        :root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #f97316;
            --neutral-dark: #0f172a;
            --neutral-light: #f8fafc;
            --neutral-body: #334155;
            --neutral-muted: #64748b;
            --border-color: #e2e8f0;
            --card-shadow: 0 10px 30px -10px rgba(79, 70, 229, 0.1);
            --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
            --gradient-accent: linear-gradient(135deg, #f97316 0%, #e11d48 100%);
            --gradient-soft: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
            --radius-lg: 16px;
            --radius-md: 8px;
            --transition: all 0.3s ease;
        }

        /* 基础样式复位 */
        * {
            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(--neutral-light);
            color: var(--neutral-body);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* 外层容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        /* 标题统一样式 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--gradient-soft);
            border: 1px solid rgba(79, 70, 229, 0.15);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2.25rem;
            color: var(--neutral-dark);
            font-weight: 800;
            letter-spacing: -0.025em;
        }

        .section-subtitle {
            font-size: 1.125rem;
            color: var(--neutral-muted);
            margin-top: 10px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 导航栏 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

        .header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }

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

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

        .ai-page-logo {
            height: 36px;
            object-fit: contain;
        }

        .ai-page-home-link {
            font-weight: bold;
            font-size: 1.1rem;
            color: var(--neutral-dark);
        }

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

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

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

        .nav-btn {
            background: var(--gradient-primary);
            color: white;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
            transition: var(--transition);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
            color: white;
        }

        /* 移动端菜单切换按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--neutral-dark);
        }

        /* Hero 首屏 (无图) */
        .hero {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 90% 10%, rgba(236, 72, 153, 0.08) 0%, rgba(79, 70, 229, 0.05) 50%, rgba(255, 255, 255, 0) 100%), var(--neutral-light);
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: white;
            border: 1px solid var(--border-color);
            padding: 6px 16px;
            border-radius: 50px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
            margin-bottom: 24px;
            font-size: 0.875rem;
            color: var(--neutral-dark);
            font-weight: 500;
        }

        .hero-badge span {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #22c55e;
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.9); opacity: 1; }
            50% { transform: scale(1.2); opacity: 0.5; }
            100% { transform: scale(0.9); opacity: 1; }
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.2;
            font-weight: 800;
            color: var(--neutral-dark);
            max-width: 800px;
            margin: 0 auto 24px auto;
        }

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

        .hero-desc {
            font-size: 1.25rem;
            color: var(--neutral-muted);
            max-width: 650px;
            margin: 0 auto 40px auto;
        }

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

        .btn-primary {
            background: var(--gradient-primary);
            color: white;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(79, 70, 229, 0.45);
            color: white;
        }

        .btn-secondary {
            background: white;
            color: var(--neutral-dark);
            border: 1px solid var(--border-color);
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: var(--neutral-light);
            border-color: var(--neutral-muted);
            transform: translateY(-3px);
        }

        /* 基础 Section */
        section {
            padding: 100px 0;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            background: white;
        }

        section:nth-child(even) {
            background: var(--neutral-light);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

        .stats-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .stats-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stats-label {
            font-size: 1rem;
            color: var(--neutral-dark);
            font-weight: 600;
            margin-bottom: 4px;
        }

        .stats-desc {
            font-size: 0.85rem;
            color: var(--neutral-muted);
        }

        /* 关于我们 */
        .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.75rem;
            color: var(--neutral-dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-text {
            color: var(--neutral-body);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 30px;
        }

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--neutral-dark);
        }

        .about-feat-icon {
            width: 24px;
            height: 24px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
        }

        /* 全平台 AIGC 服务体系 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--gradient-primary);
            opacity: 0;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(79, 70, 229, 0.08);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background: var(--gradient-soft);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            margin-bottom: 24px;
            color: var(--primary);
        }

        .service-title {
            font-size: 1.35rem;
            color: var(--neutral-dark);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-desc {
            font-size: 0.95rem;
            color: var(--neutral-muted);
            margin-bottom: 20px;
        }

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

        .service-tag {
            background: var(--neutral-light);
            color: var(--neutral-muted);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 流程步骤 */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .workflow-step {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: white;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
            position: relative;
            z-index: 2;
        }

        .workflow-step:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 25px;
            left: 50%;
            width: 100%;
            height: 2px;
            background: var(--border-color);
            z-index: 1;
        }

        .step-title {
            font-size: 1.15rem;
            color: var(--neutral-dark);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 0.9rem;
            color: var(--neutral-muted);
            padding: 0 10px;
        }

        /* 解决方案 */
        .solutions-tabs {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            background: white;
            border: 1px solid var(--border-color);
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .sol-feature-list {
            margin-top: 24px;
        }

        .sol-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
        }

        .sol-feature-icon {
            color: #22c55e;
            font-weight: bold;
        }

        /* 智能大屏 / 地图网络 (CSS绘图) */
        .network-map {
            background: radial-gradient(circle at center, rgba(79, 70, 229, 0.05) 0%, rgba(255,255,255,0) 70%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 50px;
            text-align: center;
            position: relative;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .network-card {
            background: white;
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            border-top: 3px solid var(--primary);
        }

        .network-card.secondary {
            border-top-color: var(--secondary);
        }

        .network-card.accent {
            border-top-color: var(--accent);
        }

        /* 软件与技术标准 */
        .tech-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tech-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px;
        }

        .tech-card h4 {
            font-size: 1.25rem;
            color: var(--neutral-dark);
            margin-bottom: 20px;
            border-bottom: 2px solid var(--neutral-light);
            padding-bottom: 10px;
        }

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

        .tech-list li {
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            font-size: 0.95rem;
        }

        .tech-list li span:first-child {
            font-weight: 600;
            color: var(--neutral-dark);
        }

        .tech-list li span:last-child {
            color: var(--neutral-muted);
        }

        /* 案例展示区 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: white;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

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

        .case-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #e2e8f0;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-img-wrap img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 24px;
        }

        .case-cat {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .case-title {
            font-size: 1.15rem;
            color: var(--neutral-dark);
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .compare-table-wrap {
            overflow-x: auto;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

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

        .compare-table th {
            background: var(--neutral-light);
            font-weight: 700;
            color: var(--neutral-dark);
        }

        .compare-table tr:hover {
            background: rgba(79, 70, 229, 0.01);
        }

        .score-highlight {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--secondary);
        }

        /* 需求表单模块 */
        .contact-section {
            background: linear-gradient(180deg, white 0%, var(--neutral-light) 100%);
        }

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

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

        .qr-box {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            margin: 30px 0;
            padding: 20px;
            background: var(--neutral-light);
            border-radius: var(--radius-md);
        }

        .qr-box img {
            width: 180px;
            height: 180px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }

        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-detail-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
        }

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

        .form-title {
            font-size: 1.5rem;
            color: var(--neutral-dark);
            font-weight: 700;
            margin-bottom: 24px;
        }

        .form-group-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 16px;
        }

        .form-group {
            margin-bottom: 16px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--neutral-dark);
        }

        .form-control {
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            transition: var(--transition);
            background: var(--neutral-light);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background: white;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        .form-submit-btn {
            background: var(--gradient-primary);
            color: white;
            border: none;
            padding: 14px;
            border-radius: var(--radius-md);
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.2);
            transition: var(--transition);
            width: 100%;
        }

        .form-submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .token-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }

        .token-card:hover {
            transform: scale(1.03);
            box-shadow: var(--card-shadow);
        }

        .token-logo-txt {
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .token-price {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--neutral-dark);
            margin-bottom: 16px;
        }

        .token-price span {
            font-size: 0.8rem;
            color: var(--neutral-muted);
            font-weight: 400;
        }

        .token-status {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(34, 197, 94, 0.1);
            color: #16a34a;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .train-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: var(--transition);
        }

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

        .train-badge {
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            display: inline-block;
            margin-bottom: 16px;
        }

        .train-title {
            font-size: 1.25rem;
            color: var(--neutral-dark);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .train-list {
            list-style: none;
            font-size: 0.9rem;
            color: var(--neutral-body);
            margin-top: 16px;
        }

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

        .train-list li::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
        }

        /* 客户评价 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .comment-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.01);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 0.95rem;
            color: var(--neutral-body);
            margin-bottom: 24px;
            font-style: italic;
        }

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

        .comment-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .user-name {
            font-weight: 700;
            color: var(--neutral-dark);
            font-size: 0.9rem;
        }

        .user-role {
            font-size: 0.8rem;
            color: var(--neutral-muted);
        }

        /* 知识库/行业资讯 */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 20px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .article-item:hover {
            transform: translateX(5px);
            box-shadow: var(--card-shadow);
        }

        .article-meta {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .article-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--neutral-dark);
        }

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

        .article-date {
            font-size: 0.8rem;
            color: var(--neutral-muted);
        }

        /* 帮助中心 & FAQ & 术语百科 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

        .faq-q {
            padding: 20px 24px;
            font-weight: 700;
            color: var(--neutral-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: white;
        }

        .faq-q::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--neutral-muted);
            transition: var(--transition);
        }

        .faq-item.active .faq-q::after {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--neutral-light);
        }

        .faq-a-inner {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--neutral-body);
            border-top: 1px solid var(--border-color);
        }

        .glossary-wrap {
            margin-top: 50px;
            background: var(--neutral-light);
            border-radius: var(--radius-lg);
            padding: 30px;
        }

        .glossary-title {
            font-size: 1.25rem;
            color: var(--neutral-dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .glossary-tag {
            background: white;
            border: 1px solid var(--border-color);
            padding: 10px;
            border-radius: var(--radius-md);
            text-align: center;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 底部链接与页脚 */
        .footer {
            background: var(--neutral-dark);
            color: #94a3b8;
            padding: 80px 0 20px 0;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer-logo {
            filter: brightness(0) invert(1);
            height: 36px;
            margin-bottom: 16px;
        }

        .footer-col h5 {
            color: white;
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

        .footer-links a {
            color: #94a3b8;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: white;
            padding-left: 4px;
        }

        .friend-links {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.85rem;
        }

        .friend-links a {
            color: #64748b;
        }

        .friend-links a:hover {
            color: #94a3b8;
        }

        .copyright-bar {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 悬浮客服 */
        .sticky-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--gradient-primary);
            color: white;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.4);
            cursor: pointer;
            z-index: 999;
            font-size: 1.5rem;
            transition: var(--transition);
        }

        .sticky-kefu:hover {
            transform: scale(1.1);
        }

        .kefu-popover {
            position: absolute;
            bottom: 70px;
            right: 0;
            background: white;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: var(--radius-lg);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            display: none;
            width: 220px;
            text-align: center;
            color: var(--neutral-dark);
        }

        .kefu-popover img {
            width: 140px;
            height: 140px;
            margin-bottom: 8px;
        }

        .kefu-popover p {
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 0;
            }
            .services-grid, .case-gallery, .training-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .token-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .nav-links {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
                display: none;
            }
            .nav-links.show {
                display: flex;
            }
            .hero-title {
                font-size: 2.25rem;
            }
            .about-wrap, .solutions-grid, .contact-grid, .tech-box {
                grid-template-columns: 1fr;
            }
            .workflow-timeline {
                grid-template-columns: 1fr;
            }
            .workflow-step:not(:last-child)::after {
                display: none;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .stats-grid, .services-grid, .case-gallery, .training-grid, .comments-grid, .token-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
        }