:root {
            --primary-color: #10b981; /* 鲜绿 */
            --primary-hover: #059669;
            --primary-light: #ecfdf5;
            --text-dark: #0f172a;
            --text-gray: #4b5563;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --max-width: 1200px;
            --transition: all 0.3s ease;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
        }

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

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

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

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

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-gray);
            padding: 5px 10px;
            border-radius: 4px;
        }

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

        .nav-btn {
            background-color: var(--primary-color);
            color: white;
            padding: 8px 18px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
        }

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

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

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

        /* 英雄首屏 (无图片) */
        .hero-section {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #f0fdf4 0%, #e6fcf0 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(16,185,129,0.08) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        .hero-title {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-dark);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            color: var(--primary-color);
        }

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

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

        .btn-main {
            background-color: var(--primary-color);
            color: white !important;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }

        .btn-main:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

        .btn-sub {
            background-color: white;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
        }

        .btn-sub:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            transform: translateY(-2px);
        }

        /* 核心数据卡片 */
        .stats-section {
            margin-top: -50px;
            position: relative;
            z-index: 10;
            padding-bottom: 60px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background-color: var(--bg-white);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(16, 185, 129, 0.1);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(16, 185, 129, 0.1);
        }

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 8px;
        }

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

        /* 统一模块标题 */
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px;
        }

        .section-tag {
            color: var(--primary-color);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

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

        /* 基础区块 */
        .section-padding {
            padding: 80px 0;
        }

        /* 关于我们与平台介绍 */
        .about-section {
            background-color: var(--bg-white);
        }

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

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feat-item {
            padding: 15px;
            background-color: var(--bg-light);
            border-left: 4px solid var(--primary-color);
            border-radius: 0 8px 8px 0;
        }

        .about-feat-title {
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 5px;
        }

        .about-feat-desc {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* 全平台AIGC服务与一站式制作 */
        .services-section {
            background-color: var(--bg-light);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-white);
            padding: 40px 30px;
            border-radius: 12px;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background-color: transparent;
            transition: var(--transition);
        }

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

        .service-card:hover::before {
            background-color: var(--primary-color);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            color: var(--primary-color);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
        }

        .service-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-desc {
            color: var(--text-gray);
            font-size: 14px;
            margin-bottom: 15px;
        }

        /* 支持模型标签云 */
        .model-cloud-wrapper {
            margin-top: 50px;
            background-color: var(--bg-white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            border: 1px solid var(--border-color);
        }

        .model-cloud-title {
            font-size: 16px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 20px;
            color: var(--text-gray);
        }

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

        .model-tag {
            background-color: var(--bg-light);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .model-tag:hover {
            background-color: var(--primary-light);
            border-color: var(--primary-color);
            color: var(--primary-hover);
        }

        /* 解决方案与流程 */
        .solution-section {
            background-color: var(--bg-white);
        }

        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .flow-step {
            position: relative;
            background-color: var(--bg-light);
            padding: 30px 20px;
            border-radius: 10px;
            text-align: center;
        }

        .flow-step-num {
            width: 36px;
            height: 36px;
            background-color: var(--primary-color);
            color: white;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
        }

        .flow-step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .flow-step-desc {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* 对比评测表格 */
        .evaluation-section {
            background-color: var(--bg-light);
        }

        .evaluation-card {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .eval-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .eval-score-box {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .eval-stars {
            color: #fbbf24;
            font-size: 24px;
        }

        .eval-score-text {
            font-size: 16px;
            font-weight: 500;
        }

        .eval-score-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-color);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .eval-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

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

        .eval-table th {
            background-color: var(--bg-light);
            font-weight: 700;
        }

        .eval-table tr:hover td {
            background-color: var(--primary-light);
        }

        /* Token 比价参考 */
        .token-section {
            background-color: var(--bg-white);
        }

        /* 培训版块 */
        .training-section {
            background-color: var(--bg-light);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background-color: var(--bg-white);
            padding: 24px 15px;
            border-radius: 10px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(16, 185, 129, 0.08);
        }

        .training-icon {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .training-name {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .training-desc {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* 案例中心 (图文区) */
        .cases-section {
            background-color: var(--bg-white);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--bg-light);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .case-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #ddd;
        }

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

        .case-card:hover .case-img-wrap img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 25px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 15px;
        }

        /* 客户评价 */
        .reviews-section {
            background-color: var(--bg-light);
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background-color: var(--bg-white);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

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

        .user-info h4 {
            font-size: 15px;
            font-weight: 700;
        }

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

        /* 百科与帮助 */
        .help-section {
            background-color: var(--bg-white);
        }

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

        /* FAQ折叠面板 */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: var(--bg-light);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 18px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background-color: var(--bg-white);
        }

        .faq-answer-inner {
            padding: 20px;
            font-size: 14px;
            color: var(--text-gray);
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

        /* 百科名词 */
        .wiki-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .wiki-item {
            padding: 15px;
            border-left: 3px solid var(--primary-color);
            background-color: var(--bg-light);
            border-radius: 0 8px 8px 0;
        }

        .wiki-term {
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 5px;
        }

        .wiki-def {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* 最新文章 */
        .news-section {
            background-color: var(--bg-light);
        }

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

        .news-item {
            background-color: var(--bg-white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .news-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .news-link {
            font-size: 13px;
            color: var(--primary-color);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* 联系我们与表单 */
        .contact-section {
            background-color: var(--bg-white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-box {
            background-color: var(--bg-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background-color: var(--bg-white);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        .form-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
        }

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

        .contact-info-box {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .info-card {
            background-color: var(--bg-light);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .info-card-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-color);
        }

        .info-card-content {
            font-size: 14px;
            color: var(--text-gray);
        }

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

        .qr-wrap img {
            width: 90px;
            height: 90px;
            border: 1px solid var(--border-color);
            padding: 3px;
            background-color: white;
            border-radius: 6px;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #334155;
        }

        .footer-title {
            color: var(--bg-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 15px;
        }

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

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

        .footer-bottom {
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 13px;
        }

        .ai-page-home-link {
            color: var(--primary-color);
            font-weight: 600;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            width: 140px;
            padding: 15px;
            text-align: center;
            transition: var(--transition);
        }

        .float-kefu:hover {
            transform: translateY(-5px);
        }

        .float-title {
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-color);
        }

        .float-kefu img {
            width: 100px;
            height: 100px;
            margin: 0 auto 5px;
        }

        .float-desc {
            font-size: 10px;
            color: var(--text-gray);
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 30px;
            }
            .about-grid, .help-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--bg-white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }