:root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --secondary: #10b981;
            --accent: #8b5cf6;
            --dark: #0f172a;
            --light: #f8fafc;
            --text-main: #334155;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --container-w: 1200px;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(8px);
        }

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

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

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

        .brand-name {
            font-size: 1.25rem;
            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;
            align-items: center;
        }

        .nav-item {
            font-size: 0.95rem;
            color: var(--text-main);
            font-weight: 500;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: #ffffff;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 600;
        }

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

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

        .hamburger span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
        }

        /* 首屏 Hero - 严禁出现任何图片资源 */
        .hero {
            background: radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.08) 0%, rgba(139, 92, 246, 0.05) 50%, rgba(255, 255, 255, 1) 100%), var(--light);
            padding: 100px 0 80px;
            text-align: center;
        }

        .hero-inner {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 2.75rem;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-bottom: 40px;
        }

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

        .btn-main {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 700;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
        }

        .btn-sub {
            background-color: #ffffff;
            border: 1px solid var(--border);
            color: var(--text-main);
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
        }

        .btn-sub:hover {
            background-color: #f1f5f9;
        }

        /* 块级组件通用 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
            background-color: #ffffff;
        }

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

        .sec-title {
            text-align: center;
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .sec-subtitle {
            text-align: center;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 50px;
            font-size: 1rem;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--dark);
        }

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

        .about-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

        .stat-card h4 {
            font-size: 2.25rem;
            color: var(--primary);
            margin-bottom: 8px;
            font-weight: 800;
        }

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

        /* 全平台 AIGC 服务体系 */
        .platform-cloud {
            background-color: #ffffff;
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border);
        }

        .tags-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .tag-item {
            background-color: var(--light);
            color: var(--text-main);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--border);
            transition: all 0.2s;
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

        /* 制作流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .step-item {
            background-color: #ffffff;
            padding: 30px 24px;
            border-radius: 12px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
        }

        .step-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;
            margin: 0 auto 20px;
            font-weight: 700;
        }

        .step-item h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* 行业解决方案 & 软件能力 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .solution-card h3 {
            font-size: 1.25rem;
            margin-bottom: 16px;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .solution-card h3::before {
            content: "✦";
            color: var(--primary);
        }

        .solution-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
        }

        /* 全国服务网络 & 时间线 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .network-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .network-item {
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }

        .network-icon {
            font-size: 1.5rem;
            color: var(--primary);
        }

        .network-text h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: var(--dark);
        }

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

        /* 技术标准 */
        .standards-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .standard-card {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 12px;
            border-left: 4px solid var(--accent);
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
        }

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

        /* 案例中心 - 引入图文混排 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: #ffffff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .case-img-wrap {
            width: 100%;
            height: 200px;
            background-color: #f1f5f9;
            overflow: hidden;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .case-info p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* 对比评测 - 突出推荐度 */
        .eval-box {
            background: linear-gradient(135deg, #1e293b, #0f172a);
            color: #ffffff;
            border-radius: 20px;
            padding: 50px;
            display: grid;
            grid-template-columns: 1fr 1.5fr;
            gap: 40px;
            align-items: center;
        }

        .eval-left {
            text-align: center;
            border-right: 1px solid rgba(255,255,255,0.1);
            padding-right: 40px;
        }

        .eval-score {
            font-size: 5rem;
            font-weight: 900;
            line-height: 1;
            background: linear-gradient(135deg, #60a5fa, #a78bfa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .eval-stars {
            font-size: 1.5rem;
            color: #f59e0b;
            margin: 15px 0;
        }

        .eval-right table {
            width: 100%;
            border-collapse: collapse;
        }

        .eval-right th, .eval-right td {
            padding: 12px;
            text-align: left;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .eval-right th {
            color: var(--text-muted);
        }

        /* Token比价与匹配 */
        .token-pricing {
            width: 100%;
            border-collapse: collapse;
            background-color: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            margin-top: 30px;
        }

        .token-pricing th, .token-pricing td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

        .token-pricing th {
            background-color: #f1f5f9;
            color: var(--dark);
            font-weight: 700;
        }

        .badge-lowest {
            background-color: rgba(16, 185, 129, 0.1);
            color: var(--secondary);
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        /* 培训板块 */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .train-card {
            background-color: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all 0.3s;
        }

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

        .train-icon {
            font-size: 2rem;
            margin-bottom: 15px;
            color: var(--accent);
        }

        .train-card h4 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .train-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background-color: #ffffff;
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s;
        }

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

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

        .faq-answer-inner {
            padding: 20px;
            border-top: 1px solid var(--border);
            font-size: 0.95rem;
        }

        /* 自助排查与百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .help-box {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

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

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

        .help-list-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            color: var(--dark);
        }

        .help-list-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

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

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

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

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

        .comment-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

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

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

        /* 知识库列表 */
        .articles-area {
            background-color: #ffffff;
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px;
            background-color: var(--light);
            border-radius: 8px;
            border: 1px solid transparent;
        }

        .article-link:hover {
            border-color: var(--primary);
            background-color: #ffffff;
        }

        /* 表单板块与联系我们 */
        .contact-section {
            background-color: var(--light);
        }

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

        .contact-form-wrap {
            background-color: #ffffff;
            padding: 40px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

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

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 0.95rem;
            color: var(--dark);
            background-color: var(--light);
            outline: none;
            transition: border-color 0.2s;
        }

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

        .form-submit-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            border: none;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 6px;
            cursor: pointer;
            width: 100%;
            transition: opacity 0.2s;
        }

        .form-submit-btn:hover {
            opacity: 0.9;
        }

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

        .contact-card {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

        .contact-card h3 {
            margin-bottom: 20px;
            color: var(--dark);
        }

        .qr-area {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 15px;
        }

        .qr-code {
            width: 100px;
            height: 100px;
            background-color: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .qr-code img {
            max-width: 100%;
            height: auto;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

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

        .footer-logo img {
            max-height: 40px;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .friend-links {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            margin-bottom: 25px;
        }

        .friend-links-title {
            font-size: 0.85rem;
            color: #64748b;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .friend-links-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links-list a {
            color: #64748b;
            font-size: 0.85rem;
        }

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

        .copyright-area {
            border-top: 1px solid #1e293b;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 0.8rem;
        }

        /* 悬浮组件 */
        .float-panel {
            position: fixed;
            right: 20px;
            bottom: 80px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 99;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: #ffffff;
            border: 1px solid var(--border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            cursor: pointer;
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: #ffffff;
        }

        .float-btn .tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--dark);
            color: #ffffff;
            padding: 8px 12px;
            border-radius: 4px;
            font-size: 0.8rem;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
        }

        .float-btn:hover .tooltip {
            opacity: 1;
        }

        /* 微信悬浮展示 */
        .wechat-panel {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #ffffff;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
        }

        .float-btn:hover .wechat-panel {
            display: block;
        }

        .wechat-panel img {
            width: 120px;
            height: 120px;
        }

        .wechat-panel p {
            color: var(--dark);
            font-size: 0.75rem;
            margin-top: 5px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .solutions-grid, .cases-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .train-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .eval-box {
                grid-template-columns: 1fr;
            }
            .eval-left {
                border-right: none;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                padding-right: 0;
                padding-bottom: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            }

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

            .hamburger {
                display: flex;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .about-grid, .network-grid, .contact-grid, .help-grid {
                grid-template-columns: 1fr;
            }

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

            .solutions-grid, .cases-grid, .comments-grid, .train-grid {
                grid-template-columns: 1fr;
            }

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