:root {
            --primary: #7C3AED;
            --primary-hover: #6D28D9;
            --accent: #EC4899;
            --accent-light: #FDF2F8;
            --bg-light: #F9FAFB;
            --text-main: #111827;
            --text-muted: #4B5563;
            --border-color: #E5E7EB;
            --container-w: 1200px;
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(8px);
        }

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

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

        .logo-area img {
            height: 40px;
        }

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

        .nav-links a {
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            padding: 5px 10px;
            border-radius: 4px;
            transition: all 0.3s;
        }

        .nav-links a:hover {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
        }

        /* 首屏 Hero (无图，亮紫渐变风) */
        .hero {
            background: linear-gradient(135deg, #F5F3FF 0%, #FDF2F8 50%, #EEF2F6 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.05) 0%, transparent 60%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            color: #FFFFFF;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
        }

        .hero-title {
            font-size: 40px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 35px;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-outline {
            background-color: #FFFFFF;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .hero-features {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .hero-feat-card {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(124, 58, 237, 0.1);
            padding: 20px;
            border-radius: 12px;
            backdrop-filter: blur(4px);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
        }

        .hero-feat-card h4 {
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 5px;
            font-weight: 700;
        }

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-light {
            background-color: var(--bg-light);
        }

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

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .section-subtitle {
            color: var(--text-muted);
            margin-top: 15px;
            font-size: 16px;
        }

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

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

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

        .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
        }

        .about-tag {
            background-color: #F3F4F6;
            color: var(--text-muted);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 14px;
        }

        /* 平台服务体系 & 模型墙 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(124, 58, 237, 0.1);
            border-color: var(--primary);
        }

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

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
        }

        .model-list {
            margin-top: 40px;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .model-list h4 {
            font-size: 18px;
            margin-bottom: 20px;
            text-align: center;
            color: var(--text-muted);
        }

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

        .model-badge {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            transition: all 0.2s;
        }

        .model-badge:hover {
            background-color: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }

        /* 工作流程 & 解决方案 */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .flow-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            position: relative;
        }

        .flow-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 15px auto;
        }

        .flow-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 解决方案网格 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: all 0.3s;
        }

        .solution-card:hover {
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
            border-color: var(--accent);
        }

        /* 服务网络与标准化流程 */
        .network-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .network-box, .standard-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

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

        .list-unstyled li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 12px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .list-unstyled li::before {
            content: '✓';
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        /* 对比评测表格与技术标准 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 30px;
        }

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

        .compare-table th, .compare-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: var(--bg-light);
            font-weight: 600;
        }

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

        .compare-highlight {
            background-color: var(--accent-light);
            font-weight: 600;
            color: var(--primary);
        }

        .rating-box {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #FFFFFF;
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            margin-top: 30px;
        }

        .rating-num {
            font-size: 48px;
            font-weight: 800;
            margin: 10px 0;
        }

        /* 案例展示区 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s;
        }

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

        .case-img-wrap {
            position: relative;
            background: #E5E7EB;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
        }

        .review-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            position: relative;
        }

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

        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 14px;
        }

        /* Token 比价与需求匹配表单 */
        .token-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .token-list-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .form-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

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

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

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

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

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(124, 58, 237, 0.1);
            transform: translateY(-3px);
        }

        .training-icon {
            font-size: 32px;
            margin-bottom: 12px;
        }

        /* FAQ 与排查 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 15px 0;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            padding: 10px 0;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-muted);
            font-size: 14px;
            padding-right: 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-top: 10px;
            padding-bottom: 10px;
        }

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

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

        /* 自助排查与术语 */
        .help-center-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-top: 50px;
        }

        .diagnose-box, .wiki-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
        }

        /* 资讯与知识库 */
        .articles-list {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            margin-top: 30px;
        }

        .article-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        /* 联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 50px;
            align-items: center;
        }

        .contact-details {
            background-color: var(--bg-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .contact-meta-item {
            margin-bottom: 25px;
        }

        .contact-meta-item h5 {
            font-size: 14px;
            color: var(--text-muted);
            text-transform: uppercase;
            margin-bottom: 5px;
        }

        .contact-meta-item p {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
        }

        .qrcode-container {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .qrcode-card {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
        }

        .qrcode-card img {
            width: 110px;
            height: 110px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 8px;
            padding: 5px;
            background: #fff;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: var(--primary);
            color: #FFFFFF;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
            cursor: pointer;
            z-index: 999;
            transition: all 0.3s;
        }

        .float-kefu:hover {
            transform: translateY(-5px);
            background-color: var(--primary-hover);
        }

        .kefu-panel {
            position: absolute;
            bottom: 75px;
            right: 0;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            width: 260px;
            display: none;
            text-align: center;
            color: var(--text-main);
        }

        .kefu-panel.active {
            display: block;
        }

        .kefu-panel img {
            margin: 10px auto;
            width: 150px;
            height: 150px;
        }

        /* 页脚 */
        footer {
            background-color: #1F2937;
            color: #F9FAFB;
            padding: 60px 0 30px 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 50px;
            border-bottom: 1px solid #374151;
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-logo img {
            height: 40px;
            filter: brightness(0) invert(1);
            margin-bottom: 15px;
        }

        .friend-links {
            margin-top: 20px;
        }

        .friend-links a {
            color: #9CA3AF;
            margin-right: 15px;
            font-size: 13px;
            display: inline-block;
            margin-bottom: 8px;
        }

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

        .copyright-area {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #9CA3AF;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .hero-features, .service-grid, .solution-grid, .cases-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-title {
                font-size: 28px;
            }
            .about-grid, .network-section, .token-form-grid, .help-center-grid, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-features, .service-grid, .solution-grid, .cases-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: 1fr;
            }
        }