:root {
            --primary: #2563EB;
            --secondary: #0D9488;
            --accent: #EA580C;
            --accent-light: #FFedd5;
            --dark: #0F172A;
            --light: #F8FAFC;
            --border-color: #E2E8F0;
            --glow-cyan: #22D3EE;
            --glow-pink: #F43F5E;
        }

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

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

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

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 头部与导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

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

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

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

        .logo-title {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 1px;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 20px;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(37, 99, 235, 0.3);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: 0.3s;
        }

        /* Hero 首屏 - 纯色/渐变/无图 */
        .hero {
            background: radial-gradient(circle at 80% 20%, #eff6ff 0%, #f8fafc 100%);
            padding: 100px 0 80px 0;
            position: relative;
            overflow: hidden;
            border-bottom: 4px solid var(--dark);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 10%;
            left: 5%;
            width: 80px;
            height: 80px;
            border: 8px solid var(--glow-cyan);
            border-radius: 50%;
            opacity: 0.15;
            animation: bounce-slow 6s infinite alternate;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 15%;
            right: 8%;
            width: 120px;
            height: 120px;
            border: 12px solid var(--accent);
            transform: rotate(45deg);
            opacity: 0.1;
            animation: rotate-slow 12s infinite linear;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .hero h1 span {
            background: linear-gradient(125deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: #475569;
            margin-bottom: 35px;
            line-height: 1.8;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .btn-main {
            background: var(--dark);
            color: #fff;
            padding: 15px 35px;
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: 8px;
            text-decoration: none;
            border: 2px solid var(--dark);
            box-shadow: 4px 4px 0px var(--glow-cyan);
            transition: all 0.2s;
        }

        .btn-main:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--glow-cyan);
        }

        .btn-sub {
            background: #fff;
            color: var(--dark);
            padding: 15px 35px;
            font-size: 1.1rem;
            font-weight: 700;
            border-radius: 8px;
            text-decoration: none;
            border: 2px solid var(--dark);
            box-shadow: 4px 4px 0px var(--accent);
            transition: all 0.2s;
        }

        .btn-sub:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--accent);
        }

        /* 核心优势亮点数据卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: #fff;
            padding: 20px;
            border-radius: 12px;
            border: 2px solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
            text-align: center;
        }

        .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: #64748b;
        }

        /* 通用Section */
        section {
            padding: 80px 0;
            border-bottom: 2px solid var(--border-color);
        }

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

        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            display: inline-block;
            position: relative;
            padding-bottom: 10px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .section-title p {
            color: #64748b;
            margin-top: 15px;
            font-size: 1.1rem;
        }

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

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

        .about-text p {
            margin-bottom: 20px;
            color: #475569;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .about-highlight {
            border-left: 4px solid var(--accent);
            padding-left: 20px;
            margin: 25px 0;
            font-weight: 600;
            color: var(--dark);
        }

        /* AIGC 服务体系 - 模型墙与应用 */
        .service-intro {
            background: #fff;
            padding: 30px;
            border-radius: 12px;
            border: 2px solid var(--dark);
            margin-bottom: 40px;
        }

        .model-list-wrapper {
            background: var(--light);
            border: 2px solid var(--dark);
            padding: 30px;
            border-radius: 12px;
            margin-top: 30px;
        }

        .model-list-wrapper h4 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            text-align: center;
            font-weight: 700;
        }

        .model-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .model-tag {
            background: #fff;
            border: 1px solid var(--dark);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.2s;
        }

        .model-tag:hover {
            background: var(--accent-light);
            color: var(--accent);
            transform: translateY(-2px);
        }

        /* AIGC 制作流程 (横向步骤) */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-card {
            background: #fff;
            padding: 30px 20px;
            border-radius: 12px;
            border: 2px solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
            text-align: center;
            position: relative;
        }

        .flow-card:hover {
            transform: translateY(-5px);
            box-shadow: 6px 6px 0px var(--primary);
        }

        .flow-card .step-num {
            position: absolute;
            top: -15px;
            left: 20px;
            background: var(--accent);
            color: #fff;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            border: 2px solid var(--dark);
        }

        .flow-card h3 {
            margin: 15px 0 10px 0;
            font-size: 1.2rem;
        }

        .flow-card p {
            font-size: 0.9rem;
            color: #64748b;
        }

        /* 行业解决方案与全国服务网络 */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .solution-list, .network-card {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--dark);
        }

        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 20px;
        }

        .list-item:last-child {
            margin-bottom: 0;
        }

        .list-icon {
            background: var(--accent-light);
            color: var(--accent);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: bold;
        }

        .list-content h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .list-content p {
            font-size: 0.9rem;
            color: #64748b;
        }

        /* 案例展示区 - 包含具体宣传图与素材 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .case-card {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 4px 4px 0px var(--dark);
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 6px 6px 0px var(--secondary);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            border-bottom: 2px solid var(--dark);
            background: #f1f5f9;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 0.9rem;
            color: #64748b;
        }

        /* 对比评测 - 突出 9.9分 / 五星 */
        .compare-section {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 6px 6px 0px var(--dark);
        }

        .rating-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px dashed var(--border-color);
            padding-bottom: 25px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-title h3 {
            font-size: 1.8rem;
            font-weight: 800;
        }

        .rating-scores {
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .stars {
            color: #FBBF24;
            font-size: 1.6rem;
            letter-spacing: 3px;
        }

        .score-num {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent);
        }

        .table-responsive {
            overflow-x: auto;
        }

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

        .compare-table th, .compare-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: var(--light);
            font-weight: 700;
            border-bottom: 2px solid var(--dark);
        }

        .compare-table tr:hover {
            background-color: #f8fafc;
        }

        .highlight-cell {
            font-weight: 700;
            color: var(--primary);
            background-color: rgba(37, 99, 235, 0.03);
        }

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

        .price-card {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 4px 4px 0px var(--dark);
            text-align: center;
        }

        .price-card.featured {
            border-color: var(--accent);
            box-shadow: 4px 4px 0px var(--accent);
        }

        .price-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

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

        .price-num span {
            font-size: 0.9rem;
            color: #64748b;
            font-weight: 400;
        }

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

        .price-features li {
            font-size: 0.9rem;
            margin-bottom: 10px;
            color: #475569;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

        /* 培训体系 */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .train-card {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 4px 4px 0px var(--dark);
        }

        .train-card h3 {
            font-size: 1.15rem;
            margin-bottom: 15px;
            color: var(--primary);
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 10px;
        }

        .train-card ul {
            list-style: none;
        }

        .train-card li {
            font-size: 0.95rem;
            margin-bottom: 8px;
            color: #475569;
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .comment-card {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 4px 4px 0px var(--dark);
            position: relative;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 15px;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: bold;
        }

        .user-info h4 {
            font-size: 0.95rem;
        }

        .user-info p {
            font-size: 0.8rem;
            color: #64748b;
        }

        .comment-content {
            font-size: 0.9rem;
            color: #475569;
            line-height: 1.6;
        }

        /* FAQ 折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 2px 2px 0px var(--dark);
        }

        .faq-title {
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            background: #fff;
            transition: background 0.2s;
        }

        .faq-title:hover {
            background: #f8fafc;
        }

        .faq-title::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--primary);
            transition: transform 0.2s;
        }

        .faq-item.active .faq-title::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: #475569;
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 0px solid var(--border-color);
        }

        .faq-item.active .faq-content {
            padding: 15px 20px 20px 20px;
            border-top: 1px solid var(--border-color);
        }

        /* 术语与排查 */
        .wiki-排查-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .wiki-box, .排查-box {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--dark);
        }

        /* 资讯与链接 */
        .info-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .news-box, .links-box {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--dark);
        }

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

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

        .news-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .news-item a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: color 0.2s;
        }

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

        .news-date {
            font-size: 0.8rem;
            color: #64748b;
            margin-top: 5px;
        }

        .friend-links a {
            display: inline-block;
            margin-right: 12px;
            margin-bottom: 10px;
            padding: 5px 12px;
            background: var(--light);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--dark);
            text-decoration: none;
            font-size: 0.85rem;
            transition: all 0.2s;
        }

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

        /* 联系我们 & 表单 */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .contact-info {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--dark);
        }

        .kefu-qrcode {
            margin-top: 25px;
            text-align: center;
        }

        .kefu-qrcode img {
            max-width: 150px;
            border: 2px solid var(--dark);
            border-radius: 8px;
        }

        .contact-form-box {
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--primary);
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            margin-bottom: 6px;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--dark);
            border-radius: 6px;
            font-size: 0.95rem;
            outline: none;
            background: var(--light);
        }

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

        .btn-submit {
            width: 100%;
            background: var(--dark);
            color: #fff;
            border: 2px solid var(--dark);
            padding: 12px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 6px;
            cursor: pointer;
            box-shadow: 3px 3px 0px var(--glow-cyan);
            transition: all 0.2s;
        }

        .btn-submit:hover {
            transform: translate(-1px, -1px);
            box-shadow: 4px 4px 0px var(--glow-cyan);
        }

        /* 页脚 */
        footer {
            background: var(--dark);
            color: #fff;
            padding: 40px 0 20px 0;
            border-top: 4px solid var(--accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }

        .footer-brand h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--glow-cyan);
        }

        .footer-brand p {
            font-size: 0.9rem;
            opacity: 0.8;
            margin-bottom: 10px;
        }

        .footer-links h4 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            color: #fff;
            border-left: 3px solid var(--accent);
            padding-left: 10px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }

        /* 浮动客服入口 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--dark);
            border: 2px solid #fff;
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
            cursor: pointer;
            z-index: 999;
            transition: all 0.3s;
        }

        .float-kefu:hover {
            transform: scale(1.1);
        }

        .float-kefu svg {
            width: 30px;
            height: 30px;
            fill: #fff;
        }

        .float-panel {
            position: fixed;
            bottom: 100px;
            right: 30px;
            background: #fff;
            border: 2px solid var(--dark);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 5px 5px 0px var(--dark);
            display: none;
            z-index: 999;
            text-align: center;
            width: 220px;
        }

        .float-panel.active {
            display: block;
            animation: slideUp 0.3s forwards;
        }

        .float-panel img {
            width: 120px;
            height: 120px;
            margin-bottom: 10px;
        }

        .float-panel p {
            font-size: 0.85rem;
            color: var(--dark);
            font-weight: 700;
        }

        /* 动画关键帧 */
        @keyframes slideUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes bounce-slow {
            from { transform: translateY(0); }
            to { transform: translateY(-15px); }
        }

        @keyframes rotate-slow {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .hero-stats, .flow-grid, .case-grid, .price-grid, .train-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: #fff;
                flex-direction: column;
                padding: 40px 20px;
                gap: 25px;
                transition: left 0.3s ease;
                border-top: 1px solid var(--border-color);
            }

            .nav-menu.active {
                left: 0;
            }

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

            .about-grid, .grid-2col, .wiki-排查-grid, .info-grid, .contact-wrapper, .footer-grid {
                grid-template-columns: 1fr;
            }

            .hero-stats, .flow-grid, .case-grid, .price-grid, .train-grid, .comments-grid {
                grid-template-columns: 1fr;
            }
        }