:root {
            --primary: #6366f1;
            --primary-hover: #4f46e5;
            --secondary: #ec4899;
            --accent: #f97316;
            --dark: #0f172a;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            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;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

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

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

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 600 !important;
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
        }

        .nav-cta:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

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

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

        /* 移动端菜单激活样式 */
        .nav-links.active {
            display: flex !important;
        }

        /* Hero 首屏 - 纯色/渐变/无图 */
        .hero {
            padding-top: 150px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.08) 0%, rgba(99, 102, 241, 0.05) 50%, transparent 100%), #ffffff;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(99, 102, 241, 0.08);
            border: 1px solid rgba(99, 102, 241, 0.15);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 25px;
            animation: pulse 2s infinite;
        }

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

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 750px;
            margin: 0 auto 35px auto;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
        }

        .btn-secondary {
            background: #fff;
            color: var(--dark);
            border: 1px solid var(--border-color);
        }

        .btn-secondary:hover {
            background: var(--light-bg);
            transform: translateY(-2px);
        }

        /* 统一模块样式 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--secondary);
            font-weight: 700;
            margin-bottom: 10px;
            display: inline-block;
        }

        .section-title {
            font-size: 2.2rem;
            color: var(--dark);
            font-weight: 800;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(99, 102, 241, 0.05);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .about-content h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

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

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

        .about-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .about-features li::before {
            content: "✓";
            color: var(--secondary);
            font-weight: 900;
        }

        .about-media {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border: 4px solid #fff;
        }

        .about-media img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 服务体系与模型标签云 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

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

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(99, 102, 241, 0.05);
            border-color: var(--primary);
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        .tag-cloud-wrapper {
            margin-top: 50px;
            background: #fff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        .tag-cloud-title {
            text-align: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 25px;
        }

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

        .tag-item {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
        }

        /* 制作流程 & 时间线 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
            position: relative;
        }

        .step-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px auto;
        }

        .step-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 对比评测表格 */
        .comparison-wrapper {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .score-banner {
            background: linear-gradient(135deg, var(--dark), #1e1b4b);
            color: #fff;
            padding: 30px;
            text-align: center;
        }

        .score-value {
            font-size: 3.5rem;
            font-weight: 900;
            color: #f59e0b;
            line-height: 1;
            margin-bottom: 5px;
        }

        .score-stars {
            color: #f59e0b;
            font-size: 1.4rem;
            margin-bottom: 10px;
        }

        .comparison-table-container {
            width: 100%;
            overflow-x: auto;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

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

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

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

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

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

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

        .case-image {
            height: 200px;
            overflow: hidden;
            background: var(--light-bg);
            position: relative;
        }

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

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

        .case-body {
            padding: 25px;
        }

        .case-tag {
            font-size: 0.75rem;
            background: rgba(99, 102, 241, 0.08);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

        .case-body h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* Token 比价 */
        .pricing-section {
            background: #fff;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 25px;
        }

        .price-card {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            background: var(--light-bg);
            transition: var(--transition);
        }

        .price-card.popular {
            border-color: var(--secondary);
            background: #fff;
            position: relative;
            box-shadow: 0 10px 25px rgba(236, 72, 153, 0.05);
        }

        .price-card.popular::before {
            content: "推荐";
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--secondary);
            color: #fff;
            padding: 2px 14px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 50px;
        }

        .price-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .price-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .price-value span {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 400;
        }

        .price-features {
            list-style: none;
            margin-bottom: 25px;
            text-align: left;
        }

        .price-features li {
            padding: 8px 0;
            font-size: 0.9rem;
            border-bottom: 1px dashed var(--border-color);
            color: var(--text-main);
        }

        /* 职业与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

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

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
            box-shadow: 0 10px 30px rgba(236,72,153,0.05);
        }

        .training-card h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .training-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .training-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* 用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .review-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            position: relative;
        }

        .review-text {
            font-style: italic;
            color: var(--text-main);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
            font-weight: 700;
        }

        .author-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 智能需求匹配与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-wrapper {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-group label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
        }

        .form-group input, .form-group select, .form-group textarea {
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.95rem;
            background: var(--light-bg);
            transition: var(--transition);
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
        }

        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .contact-box {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
        }

        .contact-box img {
            max-width: 150px;
            height: auto;
            margin: 15px auto;
            display: block;
        }

        .contact-box p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 帮助中心 & FAQ & 排查 & 百科 */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-header::after {
            content: "+";
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-header::after {
            content: "−";
        }

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

        .faq-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: var(--text-main);
            border-top: 1px solid var(--border-color);
        }

        .trouble-glossary-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 50px;
        }

        .info-block {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .info-block h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 20px;
            border-left: 4px solid var(--secondary);
            padding-left: 12px;
        }

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

        .info-list li {
            margin-bottom: 15px;
        }

        .info-list li strong {
            color: var(--dark);
            display: block;
            font-size: 0.95rem;
        }

        .info-list li span {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* 行业资讯 & 知识库 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .article-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            transition: var(--transition);
        }

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

        .article-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
        }

        .article-card h3 a {
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
        }

        .article-card h3 a:hover {
            color: var(--primary);
        }

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

        /* 页脚 */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            height: 45px;
            width: auto;
            margin-bottom: 20px;
        }

        .footer-about p {
            font-size: 0.85rem;
            line-height: 1.7;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--secondary);
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.85rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            text-align: center;
            font-size: 0.8rem;
        }

        .friend-links {
            margin-bottom: 15px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: #cbd5e1;
        }

        /* 浮动组件 */
        .floating-kf {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 999;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            padding: 12px;
            width: 130px;
            text-align: center;
            transition: var(--transition);
        }

        .floating-kf img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-bottom: 6px;
        }

        .floating-kf span {
            font-size: 0.75rem;
            color: var(--dark);
            font-weight: 700;
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-layout, .contact-layout, .trouble-glossary-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
        }