:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #06b6d4;
            --accent: #f43f5e;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --border: #e2e8f0;
            --success: #10b981;
            --warning: #f59e0b;
        }

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

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

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

        /* 导航栏 */
        header {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            border-bottom: 1px solid var(--border);
            transition: all 0.3s ease;
        }

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

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

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

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

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white !important;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
        }

        .menu-toggle {
            display: none;
            cursor: pointer;
            background: none;
            border: none;
            color: var(--dark);
        }

        /* Hero首屏 - 高亮度鲜活风，无图片 */
        .hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(79, 70, 229, 0.15) 0%, transparent 50%),
                        var(--light);
            position: relative;
            overflow: hidden;
        }

        /* 首屏动态几何背景元素 */
        .hero-shape {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            z-index: 1;
        }
        .shape-1 {
            width: 300px;
            height: 300px;
            background: var(--primary-light);
            top: 10%;
            right: 15%;
            opacity: 0.3;
        }
        .shape-2 {
            width: 250px;
            height: 250px;
            background: var(--secondary);
            bottom: 10%;
            left: 5%;
            opacity: 0.2;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            animation: pulse 2s infinite;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            background: linear-gradient(135deg, var(--dark) 30%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 24px;
        }

        .hero p {
            font-size: 18px;
            color: var(--gray);
            margin-bottom: 35px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            text-decoration: none;
            transition: all 0.3s;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
        }

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

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-card {
            background: white;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        }

        .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--gray);
        }

        /* 核心板块标题 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .section-header p {
            color: var(--gray);
            font-size: 16px;
        }

        /* 平台介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .intro-card {
            background: white;
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 20px;
            transition: all 0.3s ease;
        }

        .intro-card:hover {
            border-color: var(--primary-light);
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.08);
        }

        .intro-icon {
            width: 50px;
            height: 50px;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .intro-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .intro-card p {
            color: var(--gray);
            font-size: 14px;
        }

        /* 全平台AIGC服务 */
        .platforms-area {
            background: white;
            border-radius: 24px;
            padding: 40px;
            border: 1px solid var(--border);
        }

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

        .platform-tag {
            background: var(--light);
            border: 1px solid var(--border);
            padding: 8px 18px;
            border-radius: 30px;
            font-weight: 500;
            color: var(--dark);
            transition: all 0.2s;
            font-size: 14px;
        }

        .platform-tag:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 一站式AIGC制作 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .feature-item {
            display: flex;
            gap: 20px;
            background: white;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

        .feature-text h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .feature-text p {
            color: var(--gray);
            font-size: 14px;
        }

        /* 全国服务网络 & 解决方案 */
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .network-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 15px;
            background: white;
            border-radius: 10px;
            border: 1px solid var(--border);
        }

        .network-item span {
            font-weight: 600;
            color: var(--primary);
        }

        /* 标准化AIGC流程 */
        .timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 25px;
            left: 5%;
            width: 90%;
            height: 2px;
            background: var(--border);
            z-index: 1;
        }

        .timeline-step {
            width: 15%;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 50px;
            height: 50px;
            background: white;
            border: 3px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            margin: 0 auto 15px;
        }

        .timeline-step h4 {
            font-size: 15px;
            margin-bottom: 5px;
        }

        .timeline-step p {
            font-size: 12px;
            color: var(--gray);
        }

        /* 对比评测表格 */
        .compare-table-wrapper {
            overflow-x: auto;
            background: white;
            border-radius: 16px;
            border: 1px solid var(--border);
        }

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

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
        }

        .compare-table th {
            background: #f1f5f9;
            font-weight: 600;
        }

        .compare-highlight {
            background: rgba(79, 70, 229, 0.03);
            font-weight: 600;
            color: var(--primary);
        }

        .rating-box {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 30px;
            border-radius: 16px;
            text-align: center;
            margin-top: 30px;
        }

        /* Token 比价 */
        .token-pricing {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .price-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 30px;
            text-align: center;
            position: relative;
        }

        .price-card.popular {
            border-color: var(--primary);
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.08);
        }

        .price-card.popular::after {
            content: '首选推荐';
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--accent);
            color: white;
            font-size: 11px;
            padding: 3px 8px;
            border-radius: 10px;
        }

        .price-value {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            margin: 20px 0;
        }

        /* 案例展示区 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            background: var(--light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        /* FAQ折叠面板 */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
        }

        .faq-header {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            background: white;
            transition: background 0.3s;
        }

        .faq-header:hover {
            background: var(--light);
        }

        .faq-body {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease-out;
            color: var(--gray);
            font-size: 14px;
        }

        .faq-item.active .faq-body {
            padding: 20px;
            max-height: 200px;
            border-top: 1px solid var(--border);
        }

        .faq-icon::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
        }

        .faq-item.active .faq-icon::after {
            content: '-';
        }

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

        .comment-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.01);
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
        }

        .user-info h4 {
            font-size: 14px;
        }

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

        /* 需求表单 */
        .form-section {
            background: white;
            border-radius: 24px;
            border: 1px solid var(--border);
            padding: 50px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .form-input-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 14px;
        }

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

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

        /* 加盟代理区块 */
        .agent-banner {
            background: linear-gradient(135deg, var(--dark), var(--primary));
            color: white;
            padding: 50px;
            border-radius: 24px;
            text-align: center;
        }

        .agent-banner h3 {
            font-size: 28px;
            margin-bottom: 15px;
        }

        /* 资讯与百科 */
        .info-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

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

        .article-item {
            background: white;
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-item a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
        }

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

        /* 浮动客服面板 */
        .float-panel {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
            position: relative;
        }

        .float-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: white;
            border: 1px solid var(--border);
            padding: 15px;
            border-radius: 10px;
            display: none;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            text-align: center;
        }

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

        .float-btn:hover .float-qr {
            display: block;
        }

        /* 页脚 */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            margin-bottom: 15px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
        }

        .footer-links a:hover {
            color: white;
        }

        .copyright-area {
            border-top: 1px solid #334155;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            margin-right: 15px;
        }

        .friend-links a:hover {
            color: white;
        }

        /* 辅助样式：隐藏桌面导航 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid, .comments-grid, .token-pricing, .cases-grid {
                grid-template-columns: 1fr;
            }
            .info-grid, .form-grid, .network-layout, .features-grid {
                grid-template-columns: 1fr;
            }
            .timeline {
                flex-direction: column;
                gap: 20px;
            }
            .timeline::before {
                display: none;
            }
            .timeline-step {
                width: 100%;
                text-align: left;
                display: flex;
                align-items: center;
                gap: 15px;
            }
            .menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                padding: 20px;
                border-bottom: 1px solid var(--border);
            }
            .nav-links.active {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }