:root {
            --primary: #00b4d8;
            --primary-dark: #0077b6;
            --primary-light: #90e0ef;
            --secondary: #00f5d4;
            --dark-bg: #0f172a;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --max-width: 1200px;
        }

        * {
            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;
            color: var(--text-main);
            background-color: var(--light-bg);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .nav-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo-box {
            display: flex;
            align-items: center;
            height: 100%;
        }

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

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

        .nav-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white !important;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(0, 180, 216, 0.3);
        }

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

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* 统一容器与区块 */
        .section {
            padding: 80px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }

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

        .section-title h2 {
            font-size: 32px;
            color: var(--dark-bg);
            font-weight: 700;
            margin-bottom: 10px;
        }

        .section-title p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* Hero 首屏 - 无任何图片 */
        .hero-section {
            background: radial-gradient(circle at 80% 20%, #e0f2fe 0%, #f8fafc 100%);
            padding-top: 150px;
            padding-bottom: 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-bg-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
        }

        .hero-shape {
            position: absolute;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(0, 245, 212, 0.05));
            filter: blur(40px);
        }

        .shape-1 { width: 300px; height: 300px; top: -50px; left: -50px; }
        .shape-2 { width: 450px; height: 450px; bottom: -100px; right: -50px; }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(0, 180, 216, 0.1);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-content h1 {
            font-size: 42px;
            line-height: 1.25;
            color: var(--dark-bg);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--primary-dark), #00f5d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-content p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-main {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 10px 20px rgba(0, 180, 216, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(0, 180, 216, 0.35);
        }

        .btn-secondary {
            background: white;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
        }

        .btn-secondary:hover {
            background: var(--light-bg);
            border-color: #cbd5e1;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding: 0 20px;
        }

        .stats-card {
            background: var(--card-bg);
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border: 1px solid rgba(0, 180, 216, 0.1);
            text-align: center;
            transition: transform 0.3s;
        }

        .stats-card:hover {
            transform: translateY(-5px);
        }

        .stats-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

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

        /* 平台/软件介绍与关于我们 */
        .about-section {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--dark-bg);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .feature-tag {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-main);
        }

        /* 全平台AIGC服务体系 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

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

        .service-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(0, 180, 216, 0.05);
            transform: translateY(-3px);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 180, 216, 0.1);
            color: var(--primary-dark);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

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

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

        /* 全自动AIGC制作流程 / 标准化服务全流程 (时间线/步骤样式) */
        .process-steps {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 30px;
            width: 2px;
            background: var(--border-color);
        }

        .step-item {
            position: relative;
            padding-left: 70px;
            margin-bottom: 40px;
        }

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

        .step-badge {
            position: absolute;
            left: 15px;
            top: 0;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            box-shadow: 0 0 0 6px #fff, 0 4px 10px rgba(0,0,0,0.1);
            z-index: 2;
        }

        .step-content {
            background: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .step-content h4 {
            font-size: 18px;
            color: var(--dark-bg);
            margin-bottom: 8px;
        }

        .step-content p {
            font-size: 14px;
            color: var(--text-muted);
        }

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

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

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 180, 216, 0.08);
        }

        .solution-header {
            background: linear-gradient(135deg, var(--dark-bg), #1e293b);
            color: white;
            padding: 24px;
            text-align: center;
        }

        .solution-header h3 {
            font-size: 20px;
        }

        .solution-body {
            padding: 24px;
        }

        .solution-body ul {
            list-style: none;
            padding: 0;
        }

        .solution-body li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px dashed var(--border-color);
        }

        /* 服务网络与地图模拟 */
        .network-section {
            background: var(--light-bg);
        }

        .network-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-map-sim {
            background: #ffffff;
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: relative;
        }

        .network-node {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .node-dot {
            width: 12px;
            height: 12px;
            background: var(--primary);
            border-radius: 50%;
            position: relative;
        }

        .node-dot::after {
            content: '';
            position: absolute;
            width: 24px;
            height: 24px;
            border: 2px solid var(--primary);
            border-radius: 50%;
            top: -6px;
            left: -6px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.5); opacity: 1; }
            100% { transform: scale(1.5); opacity: 0; }
        }

        /* 客户案例中心 - 含图片展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

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

        .case-img-wrapper {
            width: 100%;
            height: 220px;
            background: #f1f5f9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h4 {
            font-size: 18px;
            color: var(--dark-bg);
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .comparison-section {
            background: #ffffff;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

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

        .comparison-table th {
            background: var(--light-bg);
            font-weight: 600;
            color: var(--dark-bg);
        }

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

        .recommendation-score {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 30px;
            background: rgba(0, 180, 216, 0.05);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid rgba(0, 180, 216, 0.1);
        }

        .score-val {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-dark);
        }

        .star-rating {
            color: #f59e0b;
            font-size: 20px;
        }

        /* 需求匹配表单 */
        .form-section {
            background: var(--light-bg);
        }

        .form-container {
            max-width: 650px;
            margin: 0 auto;
            background: #ffffff;
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
        }

        textarea.form-control {
            height: 100px;
            resize: vertical;
        }

        .btn-submit {
            width: 100%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-submit:hover {
            box-shadow: 0 8px 15px rgba(0, 180, 216, 0.25);
        }

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

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

        .token-price {
            font-size: 28px;
            font-weight: 700;
            color: #10b981;
            margin: 15px 0;
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

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

        .training-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--dark-bg);
        }

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

        .training-list li {
            padding: 8px 0;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

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

        .faq-item {
            background: #ffffff;
            margin-bottom: 12px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-header {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--dark-bg);
            user-select: none;
        }

        .faq-icon {
            transition: transform 0.3s;
            font-size: 18px;
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .faq-item.active .faq-body {
            max-height: 1000px;
            padding: 0 24px 18px 24px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
        }

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

        /* 网站术语百科 & 自助排查 */
        .info-tab-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

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

        .info-box h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: var(--dark-bg);
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 8px;
        }

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

        .info-list-item h4 {
            font-size: 15px;
            color: var(--dark-bg);
            margin-bottom: 4px;
        }

        .info-list-item p {
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .review-card {
            background: #ffffff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            position: relative;
        }

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

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

        .review-user-info h5 {
            font-size: 15px;
            color: var(--dark-bg);
        }

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

        /* 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .news-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--dark-bg);
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .news-link {
            font-size: 14px;
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* 页脚 */
        footer {
            background: var(--dark-bg);
            color: #94a3b8;
            padding: 60px 20px 20px;
        }

        .footer-container {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            border-bottom: 1px solid #1e293b;
            padding-bottom: 40px;
        }

        .footer-logo img {
            height: 40px;
            margin-bottom: 20px;
        }

        .footer-col h4 {
            color: #ffffff;
            margin-bottom: 20px;
            font-size: 16px;
        }

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

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

        .footer-col ul a {
            font-size: 14px;
        }

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

        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 13px;
        }

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

        .friend-links a {
            color: #94a3b8;
        }

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

        /* 浮动客服 */
        .floating-service {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: #ffffff;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            border-radius: 12px;
            padding: 15px;
            width: 160px;
            text-align: center;
        }

        .floating-service img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .floating-service p {
            font-size: 12px;
            color: var(--text-main);
            font-weight: 600;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -30px;
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .about-grid, .network-container, .training-grid, .info-tab-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
            .token-grid {
                grid-template-columns: 1fr;
            }
        }