:root {
            --primary-color: #0052d9; /* 宝蓝 */
            --primary-hover: #003eb3;
            --accent-color: #ff9900; /* 明艳黄/橙 */
            --bg-light: #f5f7fa;
            --bg-white: #ffffff;
            --text-dark: #1f2429;
            --text-muted: #5e6875;
            --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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

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

        /* 顶部导航 */
        header {
            background-color: var(--bg-white);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

        .logo-text {
            font-size: 20px;
            font-weight: bold;
            color: var(--primary-color);
        }

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

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

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

        .nav-btn {
            background-color: var(--primary-color);
            color: var(--bg-white) !important;
            padding: 8px 16px;
            border-radius: 4px;
            font-weight: bold;
        }

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

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

        .menu-toggle span {
            width: 25px;
            height: 30px;
            height: 3px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* Hero首屏 - 无图片科技渐变 */
        .hero {
            background: linear-gradient(135deg, #001e50 0%, #0052d9 50%, #002b80 100%);
            color: var(--bg-white);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
            animation: rotateBg 20s linear infinite;
            pointer-events: none;
        }

        @keyframes rotateBg {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hero-h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            letter-spacing: 1px;
            color: #ffffff;
        }

        .hero-desc {
            font-size: 18px;
            max-width: 800px;
            margin: 0 auto 30px;
            color: rgba(255, 255, 255, 0.9);
        }

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

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 5px;
            font-weight: bold;
            transition: var(--transition);
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--accent-color);
            color: #1f2429 !important;
        }

        .btn-primary:hover {
            background-color: #e08b00;
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 2px solid var(--bg-white);
            color: var(--bg-white) !important;
        }

        .btn-outline:hover {
            background-color: var(--bg-white);
            color: var(--primary-color) !important;
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(5px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 20px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.15);
        }

        .stat-num {
            font-size: 28px;
            font-weight: bold;
            color: var(--accent-color);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
        }

        /* 通用区块样式 */
        section {
            padding: 80px 0;
        }

        .section-white {
            background-color: var(--bg-white);
        }

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

        .section-title h2 {
            font-size: 28px;
            color: var(--text-dark);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 3px;
            background-color: var(--primary-color);
        }

        .section-title p {
            color: var(--text-muted);
            margin-top: 10px;
            font-size: 16px;
        }

        /* 关于我们 */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 22px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .about-text p {
            margin-bottom: 15px;
            color: var(--text-muted);
        }

        .about-features {
            list-style: none;
        }

        .about-features li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 10px;
            font-weight: 500;
        }

        .about-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent-color);
            font-weight: bold;
        }

        .about-visual {
            background-color: var(--bg-light);
            border-left: 5px solid var(--primary-color);
            padding: 30px;
            border-radius: 0 8px 8px 0;
        }

        .about-visual blockquote {
            font-size: 18px;
            font-style: italic;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

        /* 全平台AIGC服务体系 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .service-card {
            background: var(--bg-light);
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
            border-color: var(--primary-color);
        }

        .service-icon {
            font-size: 32px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .service-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        .platform-tags {
            margin-top: 30px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
        }

        .platform-tag {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
        }

        /* 流程步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: var(--bg-white);
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            text-align: center;
            border-top: 4px solid var(--primary-color);
        }

        .step-num {
            display: inline-flex;
            width: 40px;
            height: 40px;
            background-color: var(--primary-color);
            color: #fff;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-bottom: 15px;
        }

        /* 解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: var(--bg-light);
            border-radius: 8px;
            padding: 30px;
            border: 1px solid var(--border-color);
        }

        .solution-card h3 {
            font-size: 20px;
            color: var(--primary-color);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* 全国服务网络 & 标准化服务流程 */
        .network-section {
            background: linear-gradient(to right, #ffffff, #f0f4fc);
        }

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

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

        .list-items li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }

        .list-items li::before {
            content: '●';
            color: var(--primary-color);
            position: absolute;
            left: 0;
        }

        /* 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .tech-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
        }

        /* 案例中心 - 含图展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background: var(--bg-white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #ddd;
            position: relative;
        }

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

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

        .case-body {
            padding: 20px;
        }

        .case-tag {
            background-color: rgba(0, 82, 217, 0.1);
            color: var(--primary-color);
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }

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

        .case-body p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 对比评测 - 表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: var(--bg-white);
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

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

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

        .eval-table th {
            background-color: var(--primary-color);
            color: var(--bg-white);
        }

        .eval-table tr:hover {
            background-color: rgba(0, 82, 217, 0.02);
        }

        .score-box {
            background-color: rgba(255, 153, 0, 0.1);
            border: 1px solid var(--accent-color);
            border-radius: 8px;
            padding: 20px;
            margin-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .score-title {
            font-size: 18px;
            font-weight: bold;
        }

        .score-stars {
            color: var(--accent-color);
            font-size: 24px;
        }

        .score-val {
            font-size: 28px;
            font-weight: bold;
            color: var(--primary-color);
        }

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

        .token-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
        }

        .token-price {
            font-size: 24px;
            color: var(--accent-color);
            font-weight: bold;
            margin: 10px 0;
        }

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

        .training-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 20px 15px;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 4px 10px rgba(0,82,217,0.1);
        }

        .training-icon {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

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

        .comment-card {
            background: var(--bg-white);
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 5px rgba(0,0,0,0.02);
        }

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

        .avatar-placeholder {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-color);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .comment-info h4 {
            font-size: 14px;
            margin-bottom: 2px;
        }

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

        /* 常见问题 FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-question {
            padding: 16px 20px;
            font-weight: bold;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: rgba(0, 82, 217, 0.02);
        }

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

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

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

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

        /* 智能需求匹配 (表单) & 联系我们 */
        .contact-section {
            background-color: var(--bg-white);
        }

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

        .contact-form {
            background: var(--bg-light);
            padding: 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

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

        .form-label {
            display: block;
            margin-bottom: 5px;
            font-size: 14px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 10px 12px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 14px;
            background-color: var(--bg-white);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(0, 82, 217, 0.1);
        }

        .form-submit {
            width: 100%;
            background-color: var(--primary-color);
            color: var(--bg-white);
            border: none;
            padding: 12px;
            font-weight: bold;
            font-size: 16px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .contact-info-area {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .qr-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 20px;
        }

        .qr-card img {
            width: 100px;
            height: 100px;
            border-radius: 4px;
        }

        .info-list {
            margin-bottom: 20px;
        }

        .info-list-item {
            margin-bottom: 10px;
            font-size: 14px;
        }

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 15px;
            font-weight: bold;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

        /* 浮动组件 */
        .floating-action {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: var(--transition);
            font-size: 20px;
            position: relative;
        }

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

        .float-btn .float-tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--text-dark);
            color: #fff;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }

        .float-btn:hover .float-tooltip {
            opacity: 1;
        }

        .float-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: none;
            border: 1px solid var(--border-color);
        }

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

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

        /* 页脚 */
        footer {
            background-color: #0c121c;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

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

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-col h3 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary-color);
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        .friend-links {
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .friend-links a {
            color: rgba(255,255,255,0.4);
            font-size: 12px;
            margin-right: 15px;
        }

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

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

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
                padding: 20px;
                gap: 15px;
            }

            .nav-menu.show {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero-h1 {
                font-size: 28px;
            }

            .about-content, .solution-grid, .contact-grid, .network-content {
                grid-template-columns: 1fr;
            }

            .stats-grid, .services-grid, .cases-grid, .comments-grid, .training-grid, .news-grid {
                grid-template-columns: 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }