:root {
            --bg-primary: #F9F9FB;
            --color-dark: #121214;
            --color-primary: #387ADF; /* 电光蓝 */
            --color-accent: #FFDE47; /* 活力黄 */
            --color-warning: #FD8A8A; /* 珊瑚红 */
            --color-success: #9BCF53; /* 苹果绿 */
            --border-width: 3px;
            --shadow-style: 6px 6px 0px #121214;
            --shadow-style-sm: 3px 3px 0px #121214;
            --shadow-hover: 10px 10px 0px #121214;
            --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        }

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

        body {
            background-color: var(--bg-primary);
            color: var(--color-dark);
            font-family: var(--font-family);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一容器最大宽度 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 统一大区块间距 */
        section {
            padding: 80px 0;
            border-bottom: var(--border-width) solid var(--color-dark);
        }

        /* 按钮与卡片通用粗黑框明艳撞色风 */
        .neo-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 800;
            text-decoration: none;
            color: var(--color-dark);
            background-color: var(--color-accent);
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style-sm);
            transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            cursor: pointer;
        }

        .neo-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: var(--shadow-style);
        }

        .neo-btn:active {
            transform: translate(2px, 2px);
            box-shadow: 1px 1px 0px #121214;
        }

        .neo-btn-primary {
            background-color: var(--color-primary);
            color: #fff;
        }

        .neo-card {
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style);
            padding: 30px;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .neo-card:hover {
            transform: translate(-4px, -4px);
            box-shadow: var(--shadow-hover);
        }

        /* 顶部导航 */
        header {
            background-color: #fff;
            border-bottom: var(--border-width) solid var(--color-dark);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 48px;
            display: block;
        }

        .brand-name {
            font-size: 24px;
            font-weight: 900;
            color: var(--color-dark);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--color-dark);
            font-weight: 700;
            font-size: 15px;
            padding: 6px 12px;
            border: 2px solid transparent;
            transition: all 0.15s ease;
        }

        .nav-menu a:hover {
            background-color: var(--color-accent);
            border-color: var(--color-dark);
        }

        /* 移动端菜单按钮 */
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .mobile-toggle span {
            display: block;
            width: 28px;
            height: 3px;
            background-color: var(--color-dark);
            transition: 0.3s;
        }

        /* 首屏 Hero 区域 (无图片) */
        .hero-section {
            background-color: #FFFEEF;
            text-align: center;
            padding: 100px 0 120px 0;
            position: relative;
            overflow: hidden;
        }

        /* 撞色背景条装饰 */
        .hero-decor {
            position: absolute;
            background-color: var(--color-primary);
            height: 40px;
            width: 120%;
            left: -10%;
            bottom: 20px;
            transform: rotate(-2deg);
            z-index: 1;
            border-top: var(--border-width) solid var(--color-dark);
            border-bottom: var(--border-width) solid var(--color-dark);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--color-success);
            color: var(--color-dark);
            font-weight: 800;
            font-size: 14px;
            padding: 6px 16px;
            border: var(--border-width) solid var(--color-dark);
            transform: rotate(-1.5deg);
            margin-bottom: 24px;
            box-shadow: var(--shadow-style-sm);
        }

        .hero-title {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.2;
            color: var(--color-dark);
            margin-bottom: 24px;
            text-shadow: 2px 2px 0px var(--color-accent);
        }

        .hero-desc {
            font-size: 18px;
            font-weight: 600;
            color: #555;
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-btns {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 核心卖点看板 */
        .highlight-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            border-top: var(--border-width) solid var(--color-dark);
            border-bottom: var(--border-width) solid var(--color-dark);
            background-color: #fff;
        }

        .highlight-item {
            text-align: center;
            padding: 30px 15px;
            border-right: var(--border-width) solid var(--color-dark);
        }

        .highlight-item:last-child {
            border-right: none;
        }

        .highlight-item h3 {
            font-size: 32px;
            font-weight: 900;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .highlight-item p {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-dark);
        }

        /* 板块公共头部 */
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            display: inline-block;
            background-color: var(--color-warning);
            color: var(--color-dark);
            font-weight: 800;
            font-size: 13px;
            padding: 4px 12px;
            border: 2px solid var(--color-dark);
            margin-bottom: 12px;
            box-shadow: 2px 2px 0px var(--color-dark);
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            color: var(--color-dark);
            position: relative;
        }

        /* 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }

        .about-text h3 {
            font-size: 26px;
            font-weight: 900;
            margin-bottom: 16px;
            color: var(--color-primary);
        }

        .about-text p {
            font-size: 16px;
            color: #333;
            margin-bottom: 20px;
        }

        .about-features {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .about-features li {
            position: relative;
            padding-left: 28px;
            font-weight: 700;
            font-size: 15px;
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: -2px;
            width: 20px;
            height: 20px;
            background-color: var(--color-success);
            border: 2px solid var(--color-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 900;
        }

        .about-side {
            background-color: var(--color-accent);
            border: var(--border-width) solid var(--color-dark);
            padding: 30px;
            box-shadow: var(--shadow-style);
        }

        .about-side h4 {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--color-dark);
            padding-bottom: 10px;
        }

        /* 全平台 AIGC 服务模型列表 */
        .model-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .model-tag {
            background: #fff;
            border: 2px solid var(--color-dark);
            padding: 6px 14px;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 2px 2px 0px var(--color-dark);
            transition: all 0.1s;
        }

        .model-tag:hover {
            background: var(--color-accent);
            transform: translate(-1px, -1px);
            box-shadow: 3px 3px 0px var(--color-dark);
        }

        .model-tag.highlight-tag {
            background: var(--color-warning);
        }

        /* 服务能力卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .service-icon {
            font-size: 40px;
            margin-bottom: 15px;
            display: inline-block;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: #555;
            flex-grow: 1;
            margin-bottom: 15px;
        }

        .service-tag-sm {
            display: inline-block;
            align-self: flex-start;
            background-color: var(--color-primary);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 8px;
            border: 1px solid var(--color-dark);
        }

        /* 一站式制作场景与解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style-sm);
            background: #fff;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .solution-title {
            background-color: var(--color-dark);
            color: #fff;
            padding: 15px 20px;
            font-weight: 800;
            font-size: 18px;
        }

        .solution-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .solution-features {
            list-style: none;
            margin: 15px 0;
        }

        .solution-features li {
            padding: 6px 0;
            border-bottom: 1px dashed #ddd;
            font-size: 14px;
            font-weight: 600;
        }

        /* 全国服务网络及步骤 */
        .step-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            margin-top: 40px;
        }

        .step-timeline::before {
            content: '';
            position: absolute;
            top: 45px;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-dark);
            z-index: 1;
        }

        .step-node {
            position: relative;
            z-index: 2;
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            padding: 20px;
            box-shadow: var(--shadow-style-sm);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--color-accent);
            border: 2px solid var(--color-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 18px;
            margin-bottom: 15px;
            box-shadow: 2px 2px 0px var(--color-dark);
        }

        /* 对比评测表格 */
        .comparison-table-wrapper {
            overflow-x: auto;
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style);
        }

        table.comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: #fff;
        }

        table.comparison-table th, table.comparison-table td {
            padding: 16px 20px;
            border: 1px solid var(--color-dark);
            font-weight: 700;
        }

        table.comparison-table th {
            background-color: var(--color-dark);
            color: #fff;
            font-size: 16px;
        }

        table.comparison-table tr:nth-child(even) td {
            background-color: #FAFAFA;
        }

        .highlight-col {
            background-color: #FFFEEF !important;
            color: var(--color-primary);
        }

        .score-badge {
            background-color: var(--color-warning);
            color: var(--color-dark);
            padding: 4px 10px;
            border: 2px solid var(--color-dark);
            font-weight: 900;
            display: inline-block;
        }

        /* Token 比价 */
        .price-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .price-item {
            background: #fff;
            border: 2px solid var(--color-dark);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-style-sm);
        }

        .price-name {
            font-weight: 900;
            font-size: 16px;
            margin-bottom: 10px;
        }

        .price-value {
            font-size: 20px;
            color: var(--color-warning);
            font-weight: 900;
            margin-bottom: 10px;
        }

        .price-note {
            font-size: 12px;
            color: #666;
        }

        /* 技术培训与工信部项目 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            padding: 20px;
            box-shadow: var(--shadow-style-sm);
            text-align: center;
        }

        .training-card h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--color-primary);
        }

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

        .case-card {
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style);
            overflow: hidden;
        }

        .case-image-container {
            width: 100%;
            height: 260px;
            overflow: hidden;
            border-bottom: var(--border-width) solid var(--color-dark);
            background: #eee;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        /* 客户评论 */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            padding: 24px;
            box-shadow: var(--shadow-style-sm);
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            border-bottom: 2px dashed var(--color-dark);
            padding-bottom: 10px;
        }

        .review-author {
            font-weight: 800;
            font-size: 15px;
        }

        .review-role {
            font-size: 12px;
            color: #666;
            background: var(--color-accent);
            padding: 2px 6px;
            border: 1px solid var(--color-dark);
        }

        .review-stars {
            color: #FFC436;
            font-size: 14px;
        }

        /* 知识库及文章列表 */
        .knowledge-section {
            background-color: #FFFEEF;
        }

        .article-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

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

        .article-list li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 2px dashed var(--color-dark);
        }

        .article-list a {
            color: var(--color-dark);
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

        .article-date {
            font-size: 12px;
            color: #777;
            font-weight: normal;
        }

        .百科-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .百科-item {
            background: #fff;
            border: 2px solid var(--color-dark);
            padding: 8px 14px;
            font-size: 13px;
            font-weight: 700;
        }

        /* FAQ 折叠面板 */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style-sm);
            background: #fff;
            margin-bottom: 15px;
        }

        .faq-question {
            padding: 20px;
            font-weight: 800;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--color-accent);
            border-bottom: var(--border-width) solid transparent;
        }

        .faq-question.active {
            border-bottom-color: var(--color-dark);
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            font-weight: 900;
        }

        .faq-question.active::after {
            content: "-";
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out, padding 0.2s ease-out;
            font-size: 14px;
            color: #333;
            font-weight: 600;
        }

        /* 需求表单与联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
        }

        .form-container {
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style);
            padding: 30px;
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            margin-bottom: 8px;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: var(--border-width) solid var(--color-dark);
            font-family: var(--font-family);
            font-weight: 600;
            font-size: 14px;
            box-shadow: inset 2px 2px 0px rgba(0,0,0,0.05);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--color-primary);
            background-color: #FFFEEF;
        }

        .contact-info-card {
            background-color: var(--color-primary);
            color: #fff;
            border: var(--border-width) solid var(--color-dark);
            box-shadow: var(--shadow-style);
            padding: 35px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-card a {
            color: #fff;
        }

        .contact-details h3 {
            font-size: 26px;
            font-weight: 900;
            margin-bottom: 20px;
            border-bottom: 2px dashed #fff;
            padding-bottom: 10px;
        }

        .contact-item {
            margin-bottom: 18px;
            font-weight: 700;
            font-size: 15px;
        }

        .qr-section {
            margin-top: 30px;
            background: #fff;
            border: var(--border-width) solid var(--color-dark);
            padding: 15px;
            color: var(--color-dark);
            display: flex;
            align-items: center;
            gap: 15px;
            box-shadow: var(--shadow-style-sm);
        }

        .qr-section img {
            width: 90px;
            height: 90px;
            border: 2px solid var(--color-dark);
        }

        .qr-text h4 {
            font-size: 15px;
            font-weight: 800;
        }

        .qr-text p {
            font-size: 12px;
            color: #555;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            border-bottom: 1px solid #333;
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-col h4::after {
            content: '';
            display: block;
            width: 30px;
            height: 3px;
            background: var(--color-accent);
            margin-top: 8px;
        }

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

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

        .footer-links a {
            color: #A0AEC0;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.15s;
        }

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

        .friend-links-area {
            background: #1e1e24;
            border: 1px solid #333;
            padding: 20px;
            margin-bottom: 30px;
        }

        .friend-links-area h5 {
            color: #fff;
            font-size: 14px;
            margin-bottom: 10px;
            font-weight: 800;
        }

        .friend-links-area a {
            color: #A0AEC0;
            text-decoration: none;
            margin-right: 15px;
            font-size: 13px;
            display: inline-block;
            margin-bottom: 5px;
        }

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

        .copyright-area {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #718096;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 侧边浮动栏 */
        .sticky-contact {
            position: fixed;
            right: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sticky-item {
            width: 48px;
            height: 48px;
            background: #fff;
            border: 2px solid var(--color-dark);
            box-shadow: 3px 3px 0px var(--color-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            cursor: pointer;
            position: relative;
            text-decoration: none;
            color: var(--color-dark);
        }

        .sticky-item:hover {
            background: var(--color-accent);
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0px var(--color-dark);
        }

        .sticky-qr-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #fff;
            border: 2px solid var(--color-dark);
            padding: 10px;
            box-shadow: var(--shadow-style-sm);
            display: none;
            text-align: center;
            width: 140px;
        }

        .sticky-qr-pop img {
            width: 120px;
            height: 120px;
        }

        .sticky-qr-pop p {
            font-size: 11px;
            font-weight: 700;
            margin-top: 5px;
            color: var(--color-dark);
        }

        .sticky-item:hover .sticky-qr-pop {
            display: block;
        }

        .back-to-top {
            display: none;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .highlight-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .highlight-item:nth-child(2) {
                border-right: none;
            }
            .highlight-item:nth-child(3) {
                border-top: var(--border-width) solid var(--color-dark);
            }
            .highlight-item:nth-child(4) {
                border-top: var(--border-width) solid var(--color-dark);
                border-right: none;
            }
            .step-timeline {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-timeline::before {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: var(--border-width) solid var(--color-dark);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            
            .nav-menu.active {
                display: flex;
            }

            .mobile-toggle {
                display: flex;
            }

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

            .solutions-grid, .training-grid, .case-grid, .review-grid, .article-grid {
                grid-template-columns: 1fr;
            }

            .highlight-bar {
                grid-template-columns: 1fr;
            }

            .highlight-item {
                border-right: none !important;
                border-bottom: var(--border-width) solid var(--color-dark);
            }

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

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