:root {
            --primary: #00C853;
            --primary-dark: #00A243;
            --primary-light: #E8F8EE;
            --dark: #1A2B20;
            --text: #2D3E33;
            --bg-light: #F7FAF8;
            --border: #E2EAE5;
            --white: #FFFFFF;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 头部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            height: 40px;
        }

        .logo-wrap .ai-page-logo {
            height: 32px;
            width: auto;
        }

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

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

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 8px 18px;
            border-radius: 4px;
            font-weight: 600;
            transition: var(--transition);
        }

        .nav-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* Hero 首屏 - 无图设计 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, var(--primary-light) 0%, var(--white) 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
            background-size: 40px 40px;
            opacity: 0.15;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 48px;
            color: var(--dark);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero p {
            font-size: 18px;
            color: var(--text);
            margin-bottom: 35px;
            opacity: 0.9;
        }

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

        .btn-main {
            background-color: var(--primary);
            color: var(--white);
            padding: 14px 28px;
            border-radius: 6px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(0, 200, 83, 0.3);
        }

        .btn-main:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 200, 83, 0.4);
        }

        .btn-sub {
            background-color: var(--white);
            color: var(--dark);
            border: 1px solid var(--border);
            padding: 14px 28px;
            border-radius: 6px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

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

        /* 数据指标卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 20px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text);
            font-weight: 500;
        }

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

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

        .section-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 32px;
            color: var(--dark);
            font-weight: 700;
            margin-bottom: 15px;
        }

        .section-header p {
            color: var(--text);
            max-width: 600px;
            margin: 0 auto;
            opacity: 0.8;
        }

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

        .about-text h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--text);
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .about-feature-item {
            background: var(--white);
            padding: 15px;
            border-radius: 6px;
            border-left: 3px solid var(--primary);
            font-size: 14px;
            font-weight: 500;
        }

        .about-image img {
            border-radius: 12px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            width: 100%;
        }

        /* 服务能力卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-icon {
            font-size: 40px;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text);
            opacity: 0.8;
        }

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

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

        .scenario-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
        }

        .scenario-img-wrap {
            height: 200px;
            overflow: hidden;
            background: #eee;
        }

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

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

        .scenario-body {
            padding: 24px;
        }

        .scenario-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .scenario-body p {
            font-size: 14px;
            color: var(--text);
            opacity: 0.8;
        }

        /* 流程步骤 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .process-step {
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: 8px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
        }

        .process-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-weight: 700;
            font-size: 18px;
        }

        .process-step h3 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--text);
            opacity: 0.8;
        }

        /* 对比评测 */
        .rating-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
        }

        .rating-score {
            font-size: 64px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .rating-detail {
            text-align: left;
        }

        .rating-stars {
            color: #FFB300;
            font-size: 24px;
            margin-bottom: 5px;
        }

        .rating-text {
            font-size: 14px;
            color: var(--text);
            font-weight: 500;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border);
            border-radius: 8px;
            background-color: var(--white);
        }

        .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);
        }

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

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

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

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .token-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }

        .token-card.best {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(0, 200, 83, 0.1);
            position: relative;
        }

        .token-card.best::after {
            content: '首选推荐';
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: var(--primary);
            color: var(--white);
            font-size: 10px;
            padding: 2px 8px;
            border-radius: 10px;
            font-weight: 600;
        }

        .token-card h3 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .token-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 15px;
        }

        .token-price span {
            font-size: 14px;
            font-weight: 400;
            color: var(--text);
        }

        .token-features {
            list-style: none;
            padding-top: 15px;
            border-top: 1px solid var(--border);
            text-align: left;
        }

        .token-features li {
            font-size: 13px;
            margin-bottom: 8px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

        /* 培训中心 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            gap: 20px;
        }

        .training-info h3 {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .training-info p {
            font-size: 14px;
            color: var(--text);
            opacity: 0.8;
            margin-bottom: 15px;
        }

        .cert-badge {
            display: inline-block;
            background-color: #FFF3E0;
            color: #E65100;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 客户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .comment-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 24px;
            position: relative;
        }

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

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

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

        .user-info h4 {
            font-size: 14px;
            color: var(--dark);
        }

        .user-info span {
            font-size: 12px;
            color: var(--text);
            opacity: 0.6;
        }

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

        .faq-item {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            transition: var(--transition);
        }

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

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

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

        /* 资讯与百科 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

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

        .article-list li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed var(--border);
        }

        .article-list a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }

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

        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .wiki-card {
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 6px;
        }

        .wiki-card h4 {
            font-size: 14px;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .wiki-card p {
            font-size: 12px;
            color: var(--text);
            opacity: 0.8;
        }

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

        .contact-info h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .info-list {
            list-style: none;
            margin-bottom: 30px;
        }

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

        .contact-media {
            display: flex;
            gap: 30px;
        }

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

        .media-box img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .media-box p {
            font-size: 12px;
            font-weight: 600;
            color: var(--dark);
        }

        .contact-form {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

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

        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: var(--white);
            border: none;
            padding: 14px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit:hover {
            background-color: var(--primary-dark);
        }

        /* 标签云与合作网络 */
        .tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tag-item {
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text);
            font-weight: 500;
        }

        .map-wrap {
            background-color: var(--white);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
        }

        .map-locations {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .loc-badge {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: 600;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #0A140E;
            color: #A2B0A6;
            padding: 60px 0 20px;
        }

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

        .footer-logo img {
            height: 35px;
            margin-bottom: 20px;
        }

        .footer-info p {
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-links h4 {
            color: var(--white);
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-links h4::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #A2B0A6;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--white);
            padding-left: 5px;
        }

        .friend-links-box {
            border-top: 1px solid #1A281E;
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 13px;
        }

        .friend-links-box a {
            color: #7D8E82;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .copyright-box {
            border-top: 1px solid #1A281E;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
        }

        .copyright-box a {
            color: #A2B0A6;
            text-decoration: none;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            transition: var(--transition);
            font-size: 20px;
            text-decoration: none;
            position: relative;
        }

        .float-item:hover {
            background-color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--white);
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            width: 140px;
        }

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

        .float-item .popover img {
            width: 110px;
            height: 110px;
            margin-bottom: 5px;
        }

        .float-item .popover p {
            font-size: 11px;
            color: var(--dark);
            font-weight: 600;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero h1 { font-size: 36px; }
            .hero-stats { grid-template-columns: repeat(2, 1fr); }
            .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
            .service-grid, .scenario-grid, .token-grid, .comments-grid, .wiki-grid { grid-template-columns: 1fr 1fr; }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .training-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero h1 { font-size: 28px; }
            .hero-stats { grid-template-columns: 1fr; }
            .service-grid, .scenario-grid, .token-grid, .comments-grid, .wiki-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr; }
            .articles-grid { grid-template-columns: 1fr; }
        }