:root {
            --primary: #7C3AED;
            --primary-glow: rgba(124, 58, 237, 0.15);
            --accent: #D946EF;
            --dark: #1E1B4B;
            --light-bg: #FAF9FF;
            --card-bg: #FFFFFF;
            --text-main: #312E81;
            --text-muted: #6B7280;
            --border-color: #E9D5FF;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        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;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white !important;
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 600 !important;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
        }

        .nav-btn:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--primary);
        }

        /* Hero首屏 - 严禁出现图片 */
        .hero-section {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(217, 70, 239, 0.1), transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.15), transparent 50%);
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background: var(--primary-glow);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(124, 58, 237, 0.3);
        }

        .hero-title {
            font-size: 42px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

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

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        .btn-main {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            padding: 15px 35px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            box-shadow: 0 10px 25px rgba(124, 58, 237, 0.4);
        }

        .btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(124, 58, 237, 0.5);
        }

        .btn-secondary {
            background: white;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 13px 33px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: var(--primary-glow);
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .stat-card {
            background: white;
            padding: 25px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(124, 58, 237, 0.05);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid rgba(124, 58, 237, 0.1);
        }

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

        .section-tag {
            color: var(--accent);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 14px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
        }

        /* 平台介绍 */
        .about-box {
            background: white;
            border-radius: 24px;
            padding: 40px;
            box-shadow: 0 15px 40px rgba(124, 58, 237, 0.05);
            border: 1px solid var(--border-color);
        }

        .about-content h3 {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 20px;
        }

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

        /* 服务体系网格 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(124, 58, 237, 0.1);
            border-color: var(--accent);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: var(--primary-glow);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .service-card h4 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--dark);
        }

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

        /* 流程步骤 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-item {
            background: white;
            padding: 25px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-bottom: 15px;
        }

        .step-item h4 {
            margin-bottom: 10px;
            color: var(--dark);
        }

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

        /* 解决方案网格 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

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

        .solution-body {
            padding: 25px;
        }

        .solution-body h4 {
            color: var(--dark);
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 服务网络 & 技术标准 */
        .network-section {
            background: linear-gradient(180deg, white, var(--light-bg));
        }

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

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

        .network-list li, .tech-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
        }

        .network-list li::before, .tech-list li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
            font-size: 18px;
        }

        /* 案例展示区 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            box-shadow: 0 20px 40px rgba(124, 58, 237, 0.08);
        }

        .case-img-container {
            width: 100%;
            overflow: hidden;
            background: #f3f4f6;
        }

        .case-img-container img {
            width: 100%;
            height: auto;
            max-height: 350px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }

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

        .case-info {
            padding: 30px;
        }

        .case-info h4 {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            background: white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
        }

        .rating-summary {
            background: var(--primary-glow);
            padding: 25px;
            border-radius: 16px;
            margin-bottom: 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border: 1px solid var(--border-color);
        }

        .rating-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .rating-score {
            font-size: 48px;
            font-weight: 900;
            color: var(--primary);
        }

        .rating-stars {
            color: #FBBF24;
            font-size: 24px;
        }

        .rating-text {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }

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

        .compare-table th, .compare-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 15px;
        }

        .compare-table th {
            background: var(--primary-glow);
            color: var(--primary);
            font-weight: 700;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

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

        /* Token比价与匹配 */
        .token-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .token-card, .match-card {
            background: white;
            padding: 30px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
        }

        .token-list {
            margin-top: 20px;
        }

        .token-item {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-color);
        }

        .token-item:last-child {
            border-bottom: none;
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .training-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
        }

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

        .training-badge {
            background: var(--accent);
            color: white;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 15px;
            display: inline-block;
        }

        .training-card h4 {
            color: var(--dark);
            margin-bottom: 10px;
        }

        /* 帮助中心 & FAQ & 自助排查 */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 20px;
            background: white;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--dark);
        }

        .faq-icon {
            font-size: 18px;
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #FAF8FF;
        }

        .faq-content {
            padding: 20px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

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

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

        /* 术语百科与标签云 */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .tag-item {
            background: var(--primary-glow);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .review-text {
            font-style: italic;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-glow);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .author-info h5 {
            font-size: 14px;
            color: var(--dark);
        }

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

        /* 资讯与知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .news-card {
            background: white;
            padding: 25px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .news-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .news-card a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            display: inline-block;
            margin-top: 10px;
        }

        .news-card a:hover {
            color: var(--accent);
        }

        /* 联系我们 & 表单 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info-card {
            background: white;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
        }

        .contact-info-card h3 {
            font-size: 24px;
            margin-bottom: 25px;
            color: var(--dark);
        }

        .contact-item-detail {
            margin-bottom: 20px;
        }

        .contact-item-detail span {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
        }

        .contact-item-detail p {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
        }

        .qr-codes {
            display: flex;
            gap: 25px;
            margin-top: 30px;
        }

        .qr-box {
            text-align: center;
        }

        .qr-box img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 5px;
            margin-bottom: 8px;
            background: white;
        }

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

        .contact-form-card {
            background: white;
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--border-color);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-glow);
        }

        select.form-control {
            background-color: white;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            border: none;
            padding: 14px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 8px;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
            transition: var(--transition);
        }

        .btn-submit:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        /* 友情链接与页脚 */
        footer {
            background: var(--dark);
            color: #E2E8F0;
            padding: 60px 0 30px;
        }

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

        .footer-brand h4 {
            font-size: 20px;
            color: white;
            margin-bottom: 15px;
        }

        .footer-brand p {
            color: #94A3B8;
            font-size: 14px;
            margin-bottom: 10px;
        }

        .footer-links h5 {
            color: white;
            font-size: 16px;
            margin-bottom: 15px;
        }

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

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

        .footer-links ul li a {
            color: #94A3B8;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .friend-links {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 25px;
            margin-top: 25px;
        }

        .friend-links h5 {
            color: #94A3B8;
            font-size: 14px;
            margin-bottom: 10px;
        }

        .friend-links a {
            color: #64748B;
            text-decoration: none;
            margin-right: 15px;
            font-size: 13px;
            transition: var(--transition);
            display: inline-block;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #64748B;
        }

        .footer-bottom a {
            color: #64748B;
            text-decoration: none;
        }

        /* 浮动组件 */
        .float-widget {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .widget-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: white;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: var(--primary);
            font-weight: bold;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            cursor: pointer;
            position: relative;
        }

        .widget-btn:hover {
            background: var(--primary);
            color: white;
            transform: scale(1.05);
        }

        .widget-qr-box {
            position: absolute;
            right: 65px;
            bottom: 0;
            background: white;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 35px rgba(0,0,0,0.15);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
            width: 140px;
        }

        .widget-qr-box img {
            width: 110px;
            height: 110px;
            display: block;
            margin-bottom: 8px;
        }

        .widget-qr-box span {
            font-size: 11px;
            color: var(--text-main);
            display: block;
        }

        .widget-btn:hover .widget-qr-box {
            display: block;
        }

        /* 移动端自适应 */
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: block;
            }

            .hero-title {
                font-size: 32px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-grid, .solutions-grid, .training-grid, .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .network-grid, .cases-grid, .token-grid, .faq-grid, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }

            .contact-info-card, .contact-form-card {
                padding: 25px;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 26px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                grid-template-columns: 1fr;
            }

            .hero-actions {
                flex-direction: column;
            }

            .btn-main, .btn-secondary {
                width: 100%;
                text-align: center;
            }
        }